(datc) dual automatic temperature control climate control

6/23/2019 Repair content for 2017 Ford F-350 Super Duty

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/ Heating, Ventilation, & Air Conditioning

/ Climate Control

/ Diagnosis and Testing

/ Climate Control System - Vehicles With: Dual

Automatic Temperature Control (DATC)

Your Current Vehicle: 2017 Ford F-350 Super Duty

Climate Control System - Vehicles With:Dual Automatic Temperature Control(DATC)412-00 Climate Control System - General Information 2017 F-250, 350, 450, 550 Super Duty Diagnosis and Testing Procedure revision date: 10/5/2017

Climate Control System - Vehicles With: Dual Automatic Temperature Control (DATC)

DTC Chart: Front Controls Interface Module (FCIM) - Dual Automatic Temperature Control(DATC)

Diagnostics in this manual assume a certain skill level and knowledge of Ford-specific diagnosticpractices.

REFER to: Diagnostic Methods(100-00 General Information, Description and Operation).

Network Diagnostic Trouble Codes (DTCs) (U-codes) are often a result of intermittent concerns suchas damaged wiring or low battery voltage occurrences. Additionally, vehicle repair procedures, suchas module reprogramming, often set network Diagnostic Trouble Codes (DTCs). Replacing a moduleto resolve a network DTC is unlikely to resolve the concern. To prevent repeat network DTCconcerns, inspect all network wiring, especially connectors. Test the vehicle battery.

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REFER to: Battery(414-01 Battery, Mounting and Cables, Diagnosis and Testing).

FCIM - Dual Automatic Temperature Control (DATC) DTC CHART

DTC Description Action

B105A:12

CabinTemperatureSensor Fan:Circuit Short ToBattery

GO to Pinpoint Test N

B105A:14

CabinTemperatureSensor Fan:Circuit Short ToGround or Open


B1081:07Left TemperatureDamper Motor:Mechanical Failure

INSPECT for a binding or damaged linkage or door. REPAIRas necessary. If no condition is found, INSTALL a new driverside temperature door actuator.

REFER to: Driver Side Temperature Door Actuator(412-00Climate Control System - General Information, Removal andInstallation).

B1081:11

Left TemperatureDamper Motor:Circuit Short ToGround

GO to Pinpoint Test I

B1081:12

Left TemperatureDamper Motor:Circuit Short ToBattery


B1081:13Left TemperatureDamper Motor:Circuit Open

GO to Pinpoint Test I Feedback


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B1082:07Right TemperatureDamper Motor:Mechanical Failure

INSPECT for a binding or damaged linkage or door. REPAIRas necessary. If no condition is found, INSTALL a newpassenger side temperature door actuator.

REFER to: Passenger Side Temperature Door Actuator(412-00 Climate Control System - General Information, Removaland Installation).

B1082:11

Right TemperatureDamper Motor:Circuit Short ToGround

GO to Pinpoint Test J

B1082:12

Right TemperatureDamper Motor:Circuit Short ToBattery


B1082:13Right TemperatureDamper Motor:Circuit Open


B1083:07RecirculationDamper Motor:Mechanical Failure

INSPECT for a binding or damaged linkage or door. REPAIRas necessary. If no condition is found, INSTALL a new airinlet door actuator.

REFER to: Air Inlet Door Actuator(412-00 Climate ControlSystem - General Information, Removal and Installation).

B1083:11

RecirculationDamper Motor:Circuit Short ToGround

GO to Pinpoint Test D

B1083:12

RecirculationDamper Motor:Circuit Short ToBattery


B1083:13RecirculationDamper Motor:Circuit Open


Feedback












B1086:07Air DistributionDamper Motor:Mechanical Failure

INSPECT for a binding or damaged linkage or door. REPAIRas necessary. If no condition is found, INSTALL a new airdistribution door actuator.

REFER to: Air Distribution Door Actuator(412-00 ClimateControl System - General Information, Removal andInstallation).

B1086:11

Air DistributionDamper Motor:Circuit Short ToGround

GO to Pinpoint Test E

B1086:12

Air DistributionDamper Motor:Circuit Short ToBattery


B1086:13Air DistributionDamper Motor:Circuit Open


B10AF:11Blower Fan Relay:Circuit Short ToGround

GO to Pinpoint Test K

B10AF:15Blower Fan Relay:Circuit Short ToBattery or Open

For an inoperative blower motor, GO to Pinpoint Test K

For all other blower motor symptoms, GO to PinpointTest L

B10B3:11

Right Panel AirDischargeTemperature:Circuit Short ToGround

GO to Pinpoint Test M

B10B3:15

Right Panel AirDischargeTemperature:Circuit Short ToBattery or Open


Feedback













B10B4:11

Right Floor AirDischargeTemperature:Circuit Short ToGround


B10B4:15

Right Floor AirDischargeTemperature:Circuit Short ToBattery or Open


B10B5:11

Left Panel AirDischargeTemperature:Circuit Short ToGround


B10B5:15

Left Panel AirDischargeTemperature:Circuit Short ToBattery or Open


B10B6:11

Left Floor AirDischargeTemperature:Circuit Short ToGround


B10B6:15

Left Floor AirDischargeTemperature:Circuit Short ToBattery or Open


B10B8:63

Push Buttons:Circuit /ComponentProtection Time-Out

This DTC sets when the buttons are held too long. ATTEMPTto clean buttons. CLEAR the Diagnostic Trouble Codes(DTCs) and REPEAT the self-test. If the DTC returns, GuidedRoutine available in the on-line Workshop Manual.

Feedback










B10B9:12Blower Control:Circuit Short ToBattery


B10B9:14Blower Control:Circuit Short ToGround or Open

For an inoperative blower motor, GO to Pinpoint Test K

For all other blower motor symptoms, GO to PinpointTest L

B11E5:12

Left HVACDamper PositionSensor: CircuitShort To Battery


B11E5:14

Left HVACDamper PositionSensor: CircuitShort To Groundor Open


B11E6:12

Right HVACDamper PositionSensor: CircuitShort To Battery


B11E6:14

Right HVACDamper PositionSensor: CircuitShort To Groundor Open


B11E7:12

Air DistributionDamper PositionSensor: CircuitShort To Battery


B11E7:14

Air DistributionDamper PositionSensor: CircuitShort To Groundor Open


Feedback













B11F0:12

Air Intake DamperPosition Sensor:Circuit Short ToBattery


B11F0:14

Air Intake DamperPosition Sensor:Circuit Short ToGround or Open


B1474:11Heater Relay 1:Circuit Short ToGround

GO to Pinpoint Test S

B1474:15Heater Relay 1:Circuit Short ToBattery or Open


B147A:11Heater Relay 2:Circuit Short ToGround


B147A:15Heater Relay 2:Circuit Short ToBattery or Open


B147B:11Heater Relay 3:Circuit Short ToGround


B147B:15Heater Relay 3:Circuit Short ToBattery or Open


B1A61:11

CabinTemperatureSensor: CircuitShort To Ground


B1A61:15

CabinTemperatureSensor: CircuitShort To Battery orOpen


Feedback














B1A63:11Right SolarSensor: CircuitShort To Ground

GO to Pinpoint Test O

B1A63:15

Right SolarSensor: CircuitShort To Battery orOpen


B1A64:11Left Solar Sensor:Circuit Short ToGround


B1A64:15Left Solar Sensor:Circuit Short ToBattery or Open


B1A69:12Humidity Sensor:Circuit Short ToBattery


B1A69:14Humidity Sensor:Circuit Short ToGround or Open


B1B71:11

EvaporatorTemperatureSensor: CircuitShort To Ground

GO to Pinpoint Test P

B1B71:15

EvaporatorTemperatureSensor: CircuitShort To Battery orOpen

GO to Pinpoint Test P

C1B14:11Sensor SupplyVoltage A: CircuitShort To Ground

GO to Pinpoint Test Q

C1B14:12Sensor SupplyVoltage A: CircuitShort To Battery

GO to Pinpoint Test Q

Feedback













DTC Description ActionAll Other FCIMDiagnosticTrouble Codes(DTCs) not listedin this chart

—Refer to the appropriate section in Group 415 for theprocedure.

DTC Chart: Powertrain Control Module (PCM)



Powertrain Control Module (PCM) DTC Chart


P0532A/C RefrigerantPressure Sensor“A” Circuit Low

GO to Pinpoint Test A

P0533A/C RefrigerantPressure Sensor“A” Circuit High

GO to Pinpoint Test A

P0645A/C ClutchRelay ControlCircuit

GO to Pinpoint Test B

P0646A/C ClutchRelay ControlCircuit Low


P0647A/C ClutchRelay ControlCircuit High


P145BA/C Demand NotActivated DuringSelf Test

If the HVAC selector was not powered on, POWER the HVACon, CLEAR the Diagnostic Trouble Codes (DTCs) and REPEATthe self-test. If the DTC returns, GO to Pinpoint Test G

P1464A/C DemandOut Of Self TestRange

If the HVAC selector was not powered off, POWER the HVACoff, CLEAR the Diagnostic Trouble Codes (DTCs) and REPEATthe self-test. If the DTC returns, GO to Pinpoint Test H

P193EA/C ClutchRequest Signal

GO to Pinpoint Test R

Feedback













All Other PCMDiagnosticTrouble Codes(DTCs)

—

For 6.2L V8 PCM DTC Chart, REFER to: Electronic EngineControls(303-14A Electronic Engine Controls - 6.2L V8,Diagnosis and Testing).

For 6.8L Triton-30V - V10 PCM DTC Chart, REFER to:Electronic Engine Controls(303-14B Electronic EngineControls - 6.8L Triton-30V - V10, Diagnosis and Testing).

For 6.7L Power Stroke Diesel PCM DTC Chart, REFER to:Electronic Engine Controls(303-14C Electronic EngineControls - 6.7L Power Stroke Diesel, Diagnosis andTesting).

Symptom Chart(s)

Symptom Chart: Climate Control - Dual Automatic Temperature Control (DATC)



NOTESome PCM Diagnostic Trouble Codes (DTCs) may inhibit A/C operation. If any PCM DiagnosticTrouble Codes (DTCs) are retrieved, diagnose those first. Refer to the DTC Chart: PCM .

Symptom Chart

Condition Possible Sources Actions

A module doesnot communicatewith thediagnostic scantool

Fuse(s)

Wiring,terminals orconnectors

FCIM

REFER to: Communications Network(418-00 ModuleCommunications Network, Diagnosis and Testing).

Feedback








Condition Possible Sources ActionsUnable ToDuplicate TheCustomerConcern And NoDiagnosticTrouble Codes(DTCs) Present

Refer to PinpointTest

GO to Pinpoint Test C

HVAC functionsare inoperative/donot operatecorrectly fromtouchscreen only

Communicationnetwork

FCIM

APIM

Refer to the appropriate section in Group 415 for theprocedure.

Reduced outletairflow

Plugged cabin airfilter

INSPECT the cabin air filter.

REFER to: Cabin Air Filter(412-00 Climate Control System- General Information, Removal and Installation).

If OK, DIAGNOSE for low refrigerant charge, A/C alwayscommanded on or blower motor not operating correctly.

Improper refrigerantlevel

CARRY OUT the refrigerant system tests. Refer to theappropriate Refrigerant System Tests procedure in Group412. If refrigerant charge is OK, GO to Pinpoint Test H

Blower motor GO to Pinpoint Test L The air inlet dooris inoperative



Incorrect or erraticdirection of airflowfrom outlets



Insufficient, erraticor no heat


GO to Pinpoint Test F

The A/C isinoperative


GO to Pinpoint Test G

The A/C is alwayson — A/C modealwayscommanded ON


GO to Pinpoint Test H

Feedback












Condition Possible Sources ActionsTemperaturecontrol isinoperative/doesnot operatecorrectly — driverside



Temperaturecontrol isinoperative/doesnot operatecorrectly —passenger side



The blower motoris inoperative



The blower motordoes not operatecorrectly


GO to Pinpoint Test L

Insufficient A/Ccooling

Improper refrigerantlevel

CARRY OUT the refrigerant system tests. Refer to theappropriate Refrigerant System Tests procedure in Group412. If refrigerant charge is OK, DIAGNOSE for atemperature door actuator not operating correctly.

Temperature dooractuator

For inadequate temperature out of the driver side,GO to Pinpoint Test I

For inadequate temperature out of the passengerside, GO to Pinpoint Test J

Feedback









Condition Possible Sources Actions

A/C pressurerelief valvedischarging

A/C pressure reliefvalve

CHECK the high side system pressure. If thepressure is below the A/C pressure relief valve openpressure, 3,447-4,137 kPa (500-600 psi), INSTALL anew A/C Compressor.

REFER to: Air Conditioning (A/C) Compressor - 6.2LV8(412-00 Climate Control System - GeneralInformation, Removal and Installation).

REFER to: Air Conditioning (A/C) Compressor - 6.8LTriton-30V - V10(412-00 Climate Control System -General Information, Removal and Installation).

REFER to: Air Conditioning (A/C) Compressor - 6.7LPower Stroke Diesel(412-00 Climate Control System- General Information, Removal and Installation).

High systempressure

CHECK the high side system pressure. If the systempressure is above the A/C pressure relief valve openpressure 3,447-4,137 kPa (500-600 psi), REPAIR the A/Csystem for a restriction.

Climate controldoes not operateonly when remotestart is used

IPC informationdisplay settings

Non-Fordapprovedremote startsysteminstalled

VERIFY Remote Start - Message Center Set ToAuto, or Remote Start - Message Center Set To LastUser Settings. REFER to: Climate Control System -Vehicles With: Dual Automatic Temperature Control(DATC) - System Operation and ComponentDescription(412-00 Climate Control System -General Information, Description and Operation).

VERIFY module communications network operation.DIAGNOSE Diagnostic Trouble Codes (DTCs) ifpresent.

Symptom Chart: Noise, Vibration, and Harshness (NVH)



Feedback








Symptom Chart

Condition PossibleSources

Actions

Noisy A/Ccompressor

A/Ccompressorbearingworn

INSPECT the A/C compressor bearing for roughness. Ifbearing roughness is found, INSTALL a new A/CCompressor.

REFER to: Air Conditioning (A/C) Compressor - 6.2LV8(412-00 Climate Control System - General Information,Removal and Installation).

REFER to: Air Conditioning (A/C) Compressor - 6.8L Triton-30V - V10(412-00 Climate Control System - GeneralInformation, Removal and Installation).

REFER to: Air Conditioning (A/C) Compressor - 6.7L PowerStroke Diesel(412-00 Climate Control System - GeneralInformation, Removal and Installation).

Excessive hissingfrom the plenumwhen the A/C is on

IncorrectA/Crefrigerantlevel

CHECK the A/C refrigerant level. CARRY OUT the refrigerantsystem tests. Refer to the appropriate Refrigerant System Testsprocedure in Group 412.

Pinpoint Test(s)

P0532, P0533

Refer to Wiring Diagrams Cell 55 for schematic and connector information.

Normal operation and Fault Conditions

The A/C pressure transducer receives a ground from the PCM . A 5-volt reference voltage is suppliedto the A/C pressure transducer from the PCM . The A/C pressure transducer then sends a voltage tothe PCM to indicate the A/C pressure.

DTC Fault Trigger Conditions

DTC Description Fault Trigger Conditions

Feedback






P0532A/C RefrigerantPressure Sensor "A"Circuit Low

This DTC sets if the feedback voltage is less than 0.26 volt for atleast 2 seconds and the ambient air temperature is greater than 0°C(32°F).

P0533A/C RefrigerantPressure Sensor "A"Circuit High

This DTC sets if the feedback voltage is greater than 4.95 volts for atleast 2 seconds and the ambient air temperature is greater than 0°C(32°F).

Possible Sources

Wiring, terminals or connectors

A/C pressure transducer

PCM

Visual Inspection and Diagnostic Pre-checks

Inspect for loose or corroded PCM and A/C pressure transducer connections.

PINPOINT TEST A : P0532, P0533

A1 COMPARE THE PCM (POWERTRAIN CONTROL MODULE) PRESSURE SENSOR(ACP_PRESS) PID (PARAMETER IDENTIFICATION) WITH THE MANIFOLD GAUGE SETREADINGS

Yes IGNORE the Diagnostic Trouble Codes (DTCs).REFER to the Symptom Chart in this section.

No GO toA2

Allow the A/C system to stabilize to the outside ambient temperature.

Ignition ON.

Using a diagnostic scan tool, view PCM Parameter Identifications (PIDs).

With the manifold gauge set connected, compare the pressure readings of the manifold gaugeset and the PCM ACP_PRESS PID .

Are the pressure values of the manifold gauge set and the ACP_PRESS PCM PID within ± 103kPa (15 psi)?

Feedback

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A2 CHECK THE A/C (AIR CONDITIONING) PRESSURE SENSOR CIRCUITS FOR A SHORT TOVOLTAGE

Yes REPAIR thecircuit.

No GO toA3

Ignition OFF.

Disconnect PCM , 6.7L Power Stroke Diesel C1232B, 6.2L V8 or 6.8L Triton-30V - V10 C175B .

Disconnect A/C pressure transducer C1260.

Ignition ON.

Measure:

Positive Lead Measurement /Action

Negative Lead

C1260-1

Ground

C1260-2

Ground

C1260-3

Ground

Is any voltage present?

A3 CHECK THE A/C (AIR CONDITIONING) PRESSURE SENSOR CIRCUITS FOR A SHORT TOGROUND

Yes GO toA4

No REPAIRthe circuit.

Ignition OFF.

Measure:

Feedback






Negative LeadPositive Lead Measurement /Action

Negative Lead

C1260-1

Ground

C1260-2

Ground

C1260-3

Ground

Are the resistances greater than 10,000 ohms?

A4 CHECK THE A/C (AIR CONDITIONING) PRESSURE SENSOR CIRCUITS FOR AN OPEN

Yes GO toA5


Measure:

6.7L Power Stroke Diesel


Negative Lead

C1260-1

C1232B-44

C1260-2

C1232B-31

C1260-3

C1232B-45

6.2L V8 or 6.8L Triton-30V - V10


Negative Lead

Feedback





Negative Lead

C1260-1

C175B-51

C1260-2

C175B-33

C1260-3

C175B-52

Are the resistances less than 3 ohms?

A5 CHECK THE A/C (AIR CONDITIONING) PRESSURE SENSOR CIRCUITS FOR A SHORTTOGETHER

Yes

INSTALL a new A/C pressure transducer.

REFER to: Air Conditioning (A/C) PressureTransducer(412-00 Climate Control System -General Information, Removal and Installation).

TEST the system for normal operation. If theconcern is still present, GO to A6

No REPAIR thecircuits.

Measure:


Negative Lead

C1260-1

C1260-2

C1260-1

C1260-3

C1260-2

C1260-3


Feedback





A6 CHECK FOR CORRECT PCM (POWERTRAIN CONTROL MODULE) OPERATION

Yes

CHECK OASIS for any applicable TechnicalService Bulletins (TSBs). If a TSB exists for thisconcern, DISCONTINUE this test and FOLLOWTSB instructions. If no Technical Service Bulletins(TSBs) address this concern, INSTALL a newPCM .

REFER to: Powertrain Control Module (PCM)(303-14A Electronic Engine Controls - 6.2L V8,Removal and Installation).

REFER to: Powertrain Control Module (PCM)(303-14B Electronic Engine Controls - 6.8LTriton-30V - V10, Removal and Installation).

REFER to: Powertrain Control Module (PCM)(303-14C Electronic Engine Controls - 6.7LPower Stroke Diesel, Removal and Installation).

No

The system is operating correctly at this time. Theconcern may have been caused by a loose orcorroded connector. ADDRESS the root cause ofany connector or pin issues.

Ignition OFF.

Disconnect and inspect all PCM connectors.

Repair:

corrosion (install new connector or terminals – clean module pins)

damaged or bent pins – install new terminals/pins

pushed-out pins – install new pins as necessary

Reconnect all PCM connectors. Make sure they seat and latch correctly.

Operate the system and determine if the concern is still present.

Is the concern still present?

Feedback






P0645, P0646, P0647


Normal Operation and Fault Conditions

Voltage is provided to the A/C clutch relay. When A/C is requested and A/C line pressures allow, aground is provided to the A/C clutch relay coil from the PCM , energizing the A/C clutch relay.



P0645

A/C ClutchRelayControlCircuit

This DTC sets when the PCM grounds the relay circuit and more voltage thanexpected is detected on the relay circuit. This DTC also sets when the relaycircuit is off and no voltage is detected on the relay circuit. The PCM expects todetect voltage coming through the relay coil to the relay circuit when it is notgrounding it.

P0646

A/C ClutchRelayControlCircuit Low

This DTC sets when the relay circuit is off and ground is detected on the relaycircuit. The PCM expects to detect voltage coming through the relay coil to therelay circuit when it is not grounding it.

P0647

A/C ClutchRelayControlCircuit High

This DTC sets when the PCM grounds the relay circuit and excessive currentdraw (short to voltage) is detected on the relay circuit.

Possible Sources


A/C clutch relay

PCM


Inspect BJB fuses 3 (20A) and 16 (10A).

PINPOINT TEST B : P0645, P0646, P0647

Feedback



B1 CHECK THE A/C (AIR CONDITIONING) CLUTCH RELAY VOLTAGE SUPPLY CIRCUITS

Yes GO toB2

No

VERIFY BJB fuses 3 (20A) and 16 (10A) are OK.If not OK, REFER to the Wiring Diagrams manualto identify the possible causes of the circuit short.If OK, REPAIR the circuit.

Ignition OFF.

Disconnect A/C clutch relay.

Ignition ON.

Measure:

Positive Lead Measurement / Action Negative Lead

A/C clutch relay socket 1

Ground



Ground

Are the voltages greater than 11 volts?

B2 CHECK THE A/C (AIR CONDITIONING) CLUTCH RELAY

Feedback




Yes GO toB3

No INSTALL a newA/C clutch relay.

Carry out the component test on the A/C clutch relay. Refer to Wiring Diagrams Cell 149 forschematic and connector information.

Did the relay pass the component test?

B3 CHECK THE A/C (AIR CONDITIONING) CLUTCH RELAY CONTROL CIRCUIT FOR A SHORTTO VOLTAGE


No GO toB4

Ignition OFF.

Disconnect A/C clutch relay.

Disconnect PCM , 6.7L Power Stroke Diesel C1232B, 6.2L V8 or 6.8L Triton-30V - V10 C175B .

Ignition ON.

Measure:



Ground


Feedback





B4 CHECK THE A/C (AIR CONDITIONING) CLUTCH RELAY CONTROL CIRCUIT FOR A SHORTTO GROUND

Yes GO toB5


Ignition OFF.

Measure:



Ground

Is the resistance greater than 10,000 ohms?

B5 CHECK THE A/C (AIR CONDITIONING) CLUTCH RELAY CONTROL CIRCUIT FOR AN OPEN

Yes GO toB6


Measure:

6.7L Power Stroke Diesel


Feedback







C1232B-2

6.2L V8 or 6.8L Triton-30V - V10



C175B-15

Is the resistance less than 3 ohms?

B6 CHECK FOR CORRECT PCM (POWERTRAIN CONTROL MODULE) OPERATION

Feedback



Yes





No


Ignition OFF.


Repair:







Unable To Duplicate The Customer Concern And No Diagnostic Trouble Codes (DTCs) Present

Feedback






This diagnostic procedure tests the functions of the HVAC system and identifies the correct HVACsymptom pinpoint test.


System Operation

REFER to: Climate Control System - Vehicles With: Dual Automatic Temperature Control (DATC) -System Operation and Component Description(412-00 Climate Control System - General Information,Description and Operation).

PINPOINT TEST C : UNABLE TO DUPLICATE THE CUSTOMER CONCERN AND NODIAGNOSTIC TROUBLE CODES (DTCS) PRESENT

C1 CHECK THE PCM (POWERTRAIN CONTROL MODULE) FOR DIAGNOSTIC TROUBLECODES (DTCS)

Yes REFER to the PCM DTCchart in this section.

No GO toC2

Ignition ON.

Using a diagnostic scan tool, perform PCM self-test.

Are any climate control related Diagnostic Trouble Codes (DTCs) present?

C2 CHECK THE FCIM (FRONT CONTROLS INTERFACE MODULE) FOR DIAGNOSTIC TROUBLECODES (DTCS)

Yes REFER to the FCIM DTCchart in this section.

No GO toC3

Ignition ON.

Using a diagnostic scan tool, perform FCIM self-test.

Are any Diagnostic Trouble Codes (DTCs) present?

Feedback






C3 CHECK THE BLOWER MOTOR OPERATION

Yes GO toC4

No

If the blower motor does not operate in anysetting, GO to Pinpoint Test K If the blower motordoes not correctly change speeds or shut off, GOto Pinpoint Test L

Ignition ON.

Select panel mode.

Observe blower motor operation and select each blower motor speed.

Does the blower motor operate in all ranges?

C4 CHECK AIRFLOW OPERATION

Yes GO toC5

No GO toPinpoint TestE

Select the highest blower motor setting.

While observing the airflow, select each of the airflow positions (panel, panel/floor, floor,floor/defrost, defrost).

Is the airflow directed to the correct outlets?

C5 VERIFY TEMPERATURE CONTROL OPERATION

Yes GO toC6

Feedback









No

If the temperature does not get very warm, GO toPinpoint Test F If the driver side temperaturedoes not change at all, GO to Pinpoint Test I Ifthe passenger side temperature does not changeat all, GO to Pinpoint Test J

Start the vehicle and allow it to reach normal operating temperature.

With the A/C off, select panel mode.

Change the driver and passenger temperature settings from the coldest to the warmest andback to the coldest.

Does the temperature change between very warm to cool?

C6 VERIFY THE AIR CONDITIONING COMPRESSOR DOES NOT ENGAGE WITH A/C (AIRCONDITIONING) OFF

Yes GO toC7

No

If the driver side temperature is warmer thanambient air temperature, GO to Pinpoint Test I Ifthe passenger side temperature is warmer thanambient air temperature, GO to Pinpoint Test J Ifthe outlet temperature is significantly colder thanambient air temperature and the A/C compressorclutch is engaged, GO to Pinpoint Test H

With the engine running and the A/C off, select panel mode.

Select the coldest temperature setting.

Is the outlet temperature close to ambient air temperature?

C7 VERIFY THE A/C (AIR CONDITIONING) COMPRESSOR IS OPERATIONAL IN THE A/C (AIRCONDITIONING) MODE

Yes GO toC8

Feedback











No GO toPinpoint TestG

Make sure the ambient air temperature is above 0°C (32°F).

With the engine running, select panel mode.

Press the A/C button (indicator on).

Is the A/C compressor operational when the panel and A/C button (indicator on) is pressed?

C8 CHECK THE RECIRCULATED AIR OPERATION

Yes GO toC9

No GO toPinpoint TestD

With the engine running, press the recirculated air button (indicator off).

Select panel mode.

Select the highest blower motor setting.

Observe airflow noise.

Press the recirculated air button (indicator on).

Does the airflow noise increase when the recirculated air mode is selected (indicator on)?

C9 CHECK THE FCIM (FRONT CONTROLS INTERFACE MODULE) LEFT DISCHARGE FLOORTEMPERATURE (LDFTEMP) PID (PARAMETER IDENTIFICATION)

Yes GO toC10

No GO toPinpoint TestM

Using a diagnostic scan tool, view the FCIM Parameter Identifications (PIDs).

Monitor the LDFTEMP PID .

Feedback








Is the temperature coming out of the driver footwell vent similar to the PID ?

C10 CHECK THE FCIM (FRONT CONTROLS INTERFACE MODULE) LEFT DISCHARGE PANELTEMPERATURE (LDPT) PID (PARAMETER IDENTIFICATION)

Yes GO toC13



Monitor the LDPT PID .

Is the temperature coming out of the driver side register similar to the PID ?

C11 CHECK THE FCIM (FRONT CONTROLS INTERFACE MODULE) DISCHARGE AIRTEMPERATURE, RIGHT PANEL (AIRTEMP_RP) PID (PARAMETER IDENTIFICATION)

Yes GO toC12



Monitor the AIRTEMP_RP PID .

Is the temperature coming out of the passenger side register similar to the PID ?

C12 CHECK THE FCIM (FRONT CONTROLS INTERFACE MODULE) DISCHARGE AIRTEMPERATURE, RIGHT FLOOR (AIRTEMP_RF) PID (PARAMETER IDENTIFICATION)

Yes GO toC13

Feedback










Monitor the AIRTEMP_RF PID .

Is the temperature coming out of the passenger side footwell vent similar to the PID ?

C13 CHECK THE FCIM (FRONT CONTROLS INTERFACE MODULE) INTERIOR TEMPERATURESENSOR (INT_TEMP) PID (PARAMETER IDENTIFICATION)

Yes GO toC14

No GO toPinpoint TestN

Using a scan tool view the FCIM Parameter Identifications (PIDs).

Monitor the INT_TEMP PID .

Is the air temperature at the cabin temperature sensor similar to the PID ?

C14 CHECK THE TOUCHSCREEN CONTROLS OPERATION

Yes The system isoperating correctly.

No Refer to the appropriate sectionin Group 415 for the procedure.

Using the touchscreen controls, select each climate control function.

Using the touchscreen controls, select each audio control function.

Do all touchscreen controls operate?

The Air Inlet Door Is Inoperative



Feedback






To rotate the air inlet door actuator, the FCIM supplies voltage and ground to the air inlet dooractuator through the door actuator motor circuits. To reverse the air inlet door actuator rotation, theFCIM reverses the voltage and ground circuits. The air inlet door actuator feedback resistors aresupplied a ground from the FCIM by the air inlet door actuator return circuits and a 5-volt referencevoltage on the air inlet door actuator reference circuits. The FCIM uses the actuator feedback resistorwiper arm position and the voltage on the air distribution door actuator feedback circuits to determinethe air inlet door actuator position.

During an actuator calibration cycle, the FCIM drives the air inlet door until the door reaches bothinternal stops in the FCIM case. If the air inlet mode door is temporarily obstructed or binding during acalibration cycle, the FCIM may interpret this as the actual end of travel for the door. When thiscondition occurs and the FCIM commands the actuator to its end of travel, the air intake may not befrom the expected source.



B1083:11

RecirculationDamper Motor:Circuit Short ToGround

This DTC sets when the module senses lower than expectedvoltage on an actuator motor circuit when voltage is applied to drivethe motor, indicating a short to ground. The motor can move only inone direction.

B1083:12

RecirculationDamper Motor:Circuit Short ToBattery

This DTC sets when the module senses higher than expectedvoltage on the actuator motor circuit when ground is applied to drivethe motor, indicating a short to voltage. The motor can move only inone direction.

B1083:13RecirculationDamper Motor:Circuit Open

This DTC sets when the module senses no voltage on the actuatormotor circuit when ground is applied to drive the motor, indicatingan open circuit. The motor cannot move.

B11F0:12

Air Intake DamperPosition Sensor:Circuit Short toBattery

This DTC sets when the module senses greater than 5 volts on theactuator feedback circuit, indicating a short to voltage.

B11F0:14

Air Intake DamperPosition Sensor:Circuit Short toGround or Open

This DTC sets when the module senses less than 1 volt on theactuator feedback circuit, indicating an open circuit or a short toground.

Possible Sources


Feedback



Air inlet door actuator

Air inlet door binding or stuck

FCIM

PINPOINT TEST D : THE AIR INLET DOOR IS INOPERATIVE

D1 CHECK THE AIR INLET DOOR ACTUATOR CIRCUITS FOR A SHORT TO VOLTAGE


No GO toD2

Ignition OFF.

Disconnect FCIM C2402A .

Ignition ON.

Measure:


Negative Lead

C2402A-2

Ground

C2402A-16

Ground

C2402A-3

Ground

C2402A-24

Ground

C2402A-25

Ground

Is there any voltage present?

Feedback




D2 CHECK THE AIR INLET DOOR ACTUATOR CIRCUITS FOR A SHORT TO GROUND

Yes GO toD3


Ignition OFF.

Measure:


Negative Lead

C2402A-2

Ground

C2402A-16

Ground

C2402A-3

Ground

C2402A-24

Ground

C2402A-25

Ground


D3 CHECK THE AIR INLET DOOR ACTUATOR CIRCUITS FOR AN OPEN

Yes GO toD4


NOTEAccess to the connector in the following step is difficult. Before carrying out this step, visually inspectthe harness for obvious damage. If no damage is evident, proceed with the test.

Feedback





Disconnect Air inlet door actuator C289 .

Measure:


Negative Lead

C289-1

C2402A-2

C289-2

C2402A-16

C289-3

C2402A-3

C289-5

C2402A-24

C289-6

C2402A-25


D4 CHECK THE AIR INLET DOOR ACTUATOR CIRCUITS FOR A SHORT TOGETHER

Yes

INSTALL a new air inlet door actuator.

REFER to: Air Inlet Door Actuator(412-00 ClimateControl System - General Information, Removaland Installation).

TEST the system for normal operation. If theconcern is still present, GO to D5


NOTEAccess to the connectors in the following step is difficult. Before carrying out this step, visually inspectthe harness for obvious damage. If no damage is evident, proceed with the test.

Disconnect In-vehicle temperature and humidity sensor C2247 .

Feedback





Disconnect Drivers side temperature door actuator C2091 .

Disconnect Passenger side temperature door actuator C2092 .

Disconnect Air distribution door actuator C236 .

Measure:


Negative Lead

C289-1

C289-2

C289-1

C289-3

C289-1

C289-5

C289-1

C289-6

C289-2

C289-3

C289-2

C289-5

C289-2

C289-6

C289-3

C289-5

C289-3

C289-6

C289-5

C289-6


D5 CHECK FOR CORRECT FRONT CONTROLS INTERFACE MODULE OPERATION

Feedback



Yes

CHECK OASIS for any applicable TechnicalService Bulletins (TSBs). If a TSB exists for thisconcern, DISCONTINUE this test and FOLLOWTSB instructions. If no Technical Service Bulletins(TSBs) address this concern, Guided Routineavailable in the on-line Workshop Manual.

No


Ignition OFF.

Disconnect and inspect all the FCIM connectors.

Repair:




Reconnect all FCIM connectors. Make sure they seat and latch correctly.



Incorrect Or Erratic Direction Of Airflow From Outlets



To rotate the air distribution door actuator, the FCIM supplies voltage and ground to the air distributiondoor actuator through the door actuator motor circuits. To reverse the air distribution door actuatorrotation, the FCIM reverses the voltage and ground circuits. The air distribution door actuatorfeedback resistors are supplied a ground from the FCIM by the air distribution door actuator returncircuits and a 5-volt reference voltage on the air distribution door actuator reference circuits. TheFCIM uses the actuator feedback resistor wiper arm position and the voltage on the air distributiondoor actuator feedback circuits to determine the air distribution door actuator position.

Feedback



During an actuator calibration cycle, the FCIM drives the air distribution door until the door reachesboth internal stops in the FCIM case. If the air distribution door is temporarily obstructed or bindingduring a calibration cycle, the FCIM may interpret this as the actual end of travel for the door. Whenthis condition occurs and the FCIM commands the actuator to its end of travel, the airflow may not befrom the expected outlets.



B1086:11Air DistributionDamper Motor: CircuitShort to Ground

This DTC sets when the module senses lower than expectedvoltage on an actuator motor circuit when voltage is applied todrive the motor, indicating a short to ground. The motor can moveonly in one direction.

B1086:12Air DistributionDamper Motor: CircuitShort to Battery

This DTC sets when the module senses higher than expectedvoltage on the actuator motor circuit when ground is applied todrive the motor, indicating a short to voltage. The motor can moveonly in one direction.

B1086:13Air DistributionDamper Motor: CircuitOpen

This DTC sets when the module senses no voltage on theactuator motor circuit when ground is applied to drive the motor,indicating an open circuit. The motor cannot move.

B11E7:12

Air DistributionDamper PositionSensor: Circuit Shortto Battery

This DTC sets when the module senses greater than 5 volts onthe actuator feedback circuit, indicating a short to voltage.

B11E7:14

Air DistributionDamper PositionSensor: Circuit Shortto Ground or Open


Possible Sources


Air distribution door actuator

Air distribution door binding or stuck

FCIM

PINPOINT TEST E : INCORRECT OR ERRATIC DIRECTION OF AIRFLOW FROM OUTLETS

Feedback



E1 CHECK THE AIR DISTRIBUTION DOOR ACTUATOR CIRCUITS FOR A SHORT TOVOLTAGE


No GO toE2

Ignition OFF.



Ignition ON.

Measure:


Negative Lead

C236-1

Ground

C236-2

Ground

C236-3

Ground

C236-4

Ground

C236-6

Ground

Is there any voltage present?

E2 CHECK THE AIR DISTRIBUTION DOOR ACTUATOR CIRCUITS FOR A SHORT TO GROUND

Yes GO toE3

Feedback






Ignition OFF.

Measure:


Negative Lead

C236-1

Ground

C236-2

Ground

C236-3

Ground

C236-4

Ground

C236-6

Ground


E3 CHECK THE AIR DISTRIBUTION DOOR ACTUATOR CIRCUITS FOR AN OPEN

Yes GO toE4


Ignition OFF.

Measure:


Negative Lead

C236-1

C2402A-20

Feedback





Negative Lead

C236-2

C2402A-2

C236-3

C2402A-3

C236-4

C2402A-22

C236-6

C2402A-21


E4 CHECK THE AIR DISTRIBUTION DOOR ACTUATOR CIRCUITS FOR A SHORT TOGETHER

Yes

INSTALL a new air distribution door actuator,

REFER to: Air Distribution Door Actuator(412-00Climate Control System - General Information,Removal and Installation).

TEST the system for normal operation. If theconcern is still present, GO to E5







Measure:

Feedback







Negative Lead

C236-1

C236-2

C236-1

C236-3

C236-1

C236-4

C236-1

C236-6

C236-2

C236-3

C236-2

C236-4

C236-2

C236-6

C236-3

C236-4

C236-3

C236-6

C236-4

C236-6


E5 CHECK FOR CORRECT FCIM (FRONT CONTROLS INTERFACE MODULE) OPERATION

Yes


Feedback



No


Ignition OFF.

Disconnect and inspect all the FCIM connectors.

Repair:







Insufficient, Erratic Or No Heat


When the engine is at operating temperature hot coolant flows from the electric motor through theheater core and back to the electric motor. Correct coolant temperatures are critical for good heaterperformance.

Possible Sources


Temperature blend door actuator

Air trapped in the coolant system

Heater core


Inspect for low engine coolant level.

PINPOINT TEST F : INSUFFICIENT, ERRATIC OR NO HEAT

Feedback



F1 CHECK FOR CORRECT ENGINE COOLANT LEVEL

Yes GO toF3

No GO toF2

Ignition OFF.

Check the engine coolant level.

Is the engine coolant at the correct level as indicated on the engine coolant recoveryreservoir?

F2 CHECK THE ENGINE COOLING SYSTEM FOR LEAKS

Yes

REPAIR the engine coolant leak. Refer to theappropriate section in Group 303 for theprocedure. TEST the system for normaloperation.

No

FILL and BLEED the cooling system. Refer to theappropriate section in Group 303 for theprocedure.

After filling and bleeding the cooling system, GOto F3

Pressure test the cooling system for leaks. Refer to the appropriate section in Group 303 for theprocedure..

Does the engine cooling system leak?

F3 CHECK FOR COOLANT FLOW TO THE HEATER CORE

Yes GO toF4Feedback







No

BLEED the cooling system per the coolingsystem draining and vacuum filling generalprocedure. Refer to the appropriate section inGroup 303 for the procedure.

After bleeding the cooling system, GO to F4Run the motor until it reaches normal operating temperature. Select the floor position on thecontrol assembly. Set the temperature control to full warm and the blower to the lowest setting.

Increase engine speed to 3,500 RPM and hold for 30 seconds.

Allow the engine to idle for 30 seconds.

Using a suitable temperature measuring device, check the heater core inlet hose to see if it ishot.

Is the heater core inlet hose hot?

F4 CHECK FOR A PLUGGED OR RESTRICTED HEATER CORE

Yes

DIAGNOSE for a blend door actuator notoperating correctly.

For inadequate driver side temperature, GO toPinpoint Test I For inadequate passenger sidetemperature, GO to Pinpoint Test J

No

INSTALL a new heater core.

REFER to: Heater Core(412-00 Climate ControlSystem - General Information, Removal andInstallation).

Using a suitable temperature measuring device, measure the heater core outlet hosetemperature.

Is the heater core outlet hose temperature similar to the inlet hose temperature (withinapproximately 6-17°C [10-30°F])?

The A/C Is Inoperative


Feedback








Control System Logic




P145BA/C Demand Not ActivatedDuring Self Test

This DTC sets when the PCM does not sense an A/Crequest during a PCM self-test.

Possible Sources


A/C system discharged or low refrigerant charge

Network concerns

A/C pressure transducer

Evaporator temperature sensor

Electric cooling fan

Intake Air Temperature (IAT) / Mass Air Flow (MAF) sensor

Active grille shutters (if equipped)

A/C compressor clutch air gap

A/C compressor clutch field coil

A/C clutch relay

FCIM

PCM


Inspect BJB fuses 3 (20A) and 16 (10A).

Inspect for loose or corroded PCM and A/C clutch relay connection

PINPOINT TEST G : THE A/C (AIR CONDITIONING) IS INOPERATIVE

Feedback




G1 CHECK THE A/C (AIR CONDITIONING) SYSTEM PRESSURE

Yes GO toG2

No

CHECK the A/C system for leaks.

REFER to: Electronic Leak Detection(412-00Climate Control System - General Information,General Procedures).

REFER to: Fluorescent Dye Leak Detection(412-00 Climate Control System - General Information,General Procedures).

After the leak is repaired, RECHARGE the A/Csystem.

REFER to: Air Conditioning (A/C) SystemRecovery, Evacuation and Charging(412-00Climate Control System - General Information,General Procedures).

NOTEStatic refrigerant pressure, under perfect conditions, should approximately reflect ambient airtemperature. Do not rely upon the static refrigerant pressure alone to determine if the system isproperly charged. Refer to the current Ford Web Based Technical Training courses for basic HVACsystem refrigerant operation.

Ignition OFF.

With the manifold gauge set connected, check for minimum A/C system pressure.

Is the A/C system pressure above 290 kPa (42 psi)?

G2 CHECK THE COMMUNICATION NETWORK

Feedback







Yes GO toG3

No

DIAGNOSE the FCIM or PCM does notcommunicate with the diagnostic scan tool.

REFER to: Communications Network(418-00Module Communications Network, Diagnosis andTesting).

Ignition ON.

Using a diagnostic scan tool, carry out the network test.

Do the FCIM and the PCM pass the network test?

G3 CHECK THE PCM (POWERTRAIN CONTROL MODULE) A/C (AIR CONDITIONING)PRESSURE SENSOR (ACP_PRESS) PID (PARAMETER IDENTIFICATION)

Yes If equipped with electric cooling fan, GO to G4 Ifnot equipped with electric cooling fan, GO to G5

No DIAGNOSE the A/C pressuretransducer. GO to Pinpoint Test A

Ignition ON.


With a manifold gauge set connected, compare the pressure readings of the manifold gauge setand the PCM ACP_PRESS PID .


G4 ELECTRIC COOLING FAN FUNCTIONAL CHECK

Yes GO toG5

No DIAGNOSE the electric cooling fan operation.Refer to Diagnostics, Section 3 Symptom Charts.

Feedback










Ignition ON.

Using a diagnostic scan tool, carry out the PCM KOEO self-test.

Does the electric cooling fan operate during the KOEO self-test?

G5 COMPARE THE PCM (POWERTRAIN CONTROL MODULE) INTAKE AIR TEMPERATURE(IAT) PID (PARAMETER IDENTIFICATION) AND THE OTHER TEMPERATURE SENSORREADINGS TO THE PCM (POWERTRAIN CONTROL MODULE) AMBIENT AIR TEMPERATURE(AAT) PID (PARAMETER IDENTIFICATION)

Yes GO toG6

No

DIAGNOSE the suspect temperature sensor.REFER to Section 413-01 for Ambient AirTemperature (AAT) sensor or Outside AirTemperature Display concerns. For all othertemperature sensor concerns, Refer toDiagnostics.

NOTECompare multiple engine sensor readings to the ambient temperature to determine sensors arereading correctly. A faulty sensor can cause the PCM to disable the A/C with or without a DTC .

Allow the vehicle exterior and interior to stabilize to ambient temperature. This can take a soakperiod of at least 6 hours.


Monitor the AAT, CACT, CHT, ECT, IAT, IAT2, MAF, MAPT, TCB and TCIPT ParameterIdentifications (PIDs) (as applicable).

Are the temperature values similar (typically within 18ºC (32.4ºF))?

G6 COMPARE THE FCIM (FRONT CONTROLS INTERFACE MODULE) A/C EVAPORATORTEMPERATURE (EVAP_TEMP) PID (PARAMETER IDENTIFICATION) TO THE PCM(POWERTRAIN CONTROL MODULE) AMBIENT AIR TEMPERATURE (AAT) PID (PARAMETERIDENTIFICATION)

Feedback





Yes If equipped with the active grille shutter system,GO to G7 If not equipped with the active grilleshutter system, GO to G8

No DIAGNOSE the evaporatortemperature sensor. GO to PinpointTest P

Ignition OFF.

Allow the vehicle exterior and interior to stabilize to ambient temperature.

Ignition ON.

Using a diagnostic scan tool, view the PCM Parameter Identification (PIDs).

Monitor and record the PCM PID AAT.

Using a diagnostic scan tool, view the FCIM Parameter Identification (PIDs).

Monitor and record the FCIM PID EVAP_TEMP.


G7 VERIFY THE GRILLE SHUTTER OPERATION USING THE PCM (POWERTRAIN CONTROLMODULE) GRILL SHUTTER A POSITION - COMMANDED (GRILL_A_CMD) PID (PARAMETERIDENTIFICATION)

Yes GO toG8

No DIAGNOSE the active grille shutter is inoperativeor does not operate correctly. Refer to theappropriate procedure in section 501-02.

Start the engine and allow it to idle for at least 30 seconds to allow for the grille shuttercalibration to complete.

Using a diagnostic scan tool, view PCM PID .

Using a diagnostic scan tool, select the PCM PID GRILL_A_CMD and command the grilleshutter from 100% (open) to 0% (closed) while observing the grille shutter operation from thefront of the vehicle.

Does the grille shutter fully open and close when commanded by the scan tool?

Feedback







G8 CHECK THE FCIM (FRONT CONTROLS INTERFACE MODULE) A/C (AIR CONDITIONING)SWITCH (CC_SW_AC) PID (PARAMETER IDENTIFICATION) WITH THE A/C (AIRCONDITIONING) ON

Yes GO toG9

No GO toG17

Using a diagnostic scan tool, view FCIM Parameter Identifications (PIDs).

Monitor the CC_SW_AC PID .

Does the PID display Active or On when the button is pressed?

G9 CHECK THE PCM (POWERTRAIN CONTROL MODULE) A/C (AIR CONDITIONING) REQUESTSIGNAL (AC_REQ) PID (PARAMETER IDENTIFICATION) WITH THE A/C (AIR CONDITIONING)ON

Yes GO toG11

No GO toG10

Start the engine.

Using a diagnostic scan tool, monitor the PCM AC_REQ PID .

On the HVAC controls, select PANEL and then press the A/C button (indicator on).

Does the PID display Yes when the button is pressed?

G10 RESET THE AMBIENT AIR TEMPERATURE (AAT) SENSOR

Yes

RETEST the A/C system for normal operation.CARRY OUT the refrigerant system tests. Referto the appropriate Refrigerant System Testsprocedure in Group 412.

Feedback







No GO toG11

On the HVAC controls, press the A/C and Recirc buttons simultaneously, then release both.Within 2 seconds press A/C button again.

Start the engine.

On the HVAC controls, set the temperature to full cold, select PANEL and select the A/C button(indicator on).

Does the A/C compressor turn on?

G11 CHECK THE PCM (POWERTRAIN CONTROL MODULE) A/C (AIR CONDITIONING)COMPRESSOR COMMANDED STATE (ACC_CMD) PID (PARAMETER IDENTIFICATION) WITHTHE A/C (AIR CONDITIONING) COMMANDED ON

Yes GO toG18

No GO toG12

Using a diagnostic scan tool, activate the PCM ACC_CMD PID .

Does the A/C compressor turn on?

G12 CHECK THE VOLTAGE TO THE A/C (AIR CONDITIONING) CLUTCH RELAY

Yes GO toG13

No

VERIFY BJB fuses 3 (20A) and 16 (10A) are OK.If not OK, REFER to the Wiring Diagrams manualto identify the possible causes of the circuit short.If OK, REPAIR the circuit.

Ignition OFF.

Disconnect the A/C clutch relay.

Ignition ON.

Measure:

Feedback







Positive Lead Measurement / Action Negative LeadPositive Lead Measurement / Action Negative Lead


Ground


Ground

Are the voltages greater than 11 volts?

G13 BYPASS THE A/C (AIR CONDITIONING) CLUTCH RELAY

Yes REMOVE the fused jumper wire.INSTALL a new A/C clutch relay.

No LEAVE the fused jumperwire installed. GO to G14

Ignition OFF.

Connect a fused jumper wire:




Feedback




Ignition ON.

Does the A/C compressor clutch engage?

G14 CHECK THE A/C (AIR CONDITIONING) COMPRESSOR CLUTCH FIELD COIL VOLTAGESUPPLY CIRCUIT FOR AN OPEN

Yes REMOVE the fusedjumper wire. GO to G15

No

REMOVE thefused jumper wire.

REPAIR thecircuit.

Disconnect A/C compressor clutch field coil C100.

Measure:


Negative Lead

C100-1

Ground

Is the voltage greater than 11 volts?

G15 CHECK THE A/C (AIR CONDITIONING) COMPRESSOR CLUTCH FIELD COIL GROUNDCIRCUIT FOR AN OPEN

Yes GO toG16


Ignition OFF.

Measure:


Negative Lead

Feedback






Negative Lead

C100-2

Ground


G16 CHECK THE A/C (AIR CONDITIONING) COMPRESSOR CLUTCH AIR GAP

Yes

ADJUST the A/C compressor clutch air gap.

REFER to: Air Conditioning (A/C) Clutch Air GapAdjustment(412-00 Climate Control System -General Information, General Procedures).

No

INSTALL a new A/C compressor clutch field coil.

REFER to: Air Conditioning (A/C) Clutch and AirConditioning (A/C) Clutch Field Coil(412-00Climate Control System - General Information,General Procedures).

Measure the A/C compressor clutch air gap at 3 equally spaced locations between the clutchhub and the A/C compressor clutch pulley. REFER to: Air Conditioning (A/C) Clutch Air GapAdjustment(412-00 Climate Control System - General Information, General Procedures).

Is the A/C compressor clutch air gap greater than 0.6 mm (0.0236 in)?

G17 CHECK FOR CORRECT FCIM (FRONT CONTROLS INTERFACE MODULE) OPERATION

Yes


Feedback






No


Ignition OFF.

Disconnect and inspect all FCIM connectors.

Repair:







G18 CHECK FOR AN INPUT DISABLING THE A/C (AIR CONDITIONING) CLUTCH RELAY

Yes

DIAGNOSE the condition found to be disablingthe A/C clutch relay. REFER to the appropriateWorkshop Manual (WSM) section or thePowertrain Control/Emissions Diagnosis (PC/ED)manual.

No

The A/C compressor clutch can be commandedon using the IDS PCM Active command PID .The A/C inoperative concern may be caused byan intermittent condition due to a component ormodule connection, wiring or pin issue.ADDRESS the root cause of any connector or pinissues. CHECK the vehicle service history forrecent service actions that have replacedmodules. This condition may be due toincomplete or incorrect PMI procedures.

NOTE

Feedback



The PCM strategy may disable the A/C compressor operation. If the A/C compressor clutch can becommanded on using IDS PCM Parameter Identifications (PIDs) Active Commands, PCMreplacement will not resolve the condition.

Diagnose the PCM not energizing the A/C clutch relay using the suggestions in the table below.Refer to the reference value information in Section 6 of the Powertrain Control/EmissionsDiagnosis (PC/ED) manual.

A/C Clutch Engagement is inhibited because strategy has not yet detected hardware thatindicates vehicle is equipped with A/CA/C Clutch Engagement is inhibited because the strategy is operating in Ignition SystemFailure ModeA/C Clutch Engagement is inhibited because the (ECU) received a Request to Command theA/C OffA/C Clutch Engagement is inhibited because the engine has not yet reached a stable runningmode after startingA/C Clutch Engagement is inhibited because the A/C Discharge (Head) Pressure is Too HighA/C Clutch Engagement is inhibited because the Engine Coolant Temperature is Too HighA/C Clutch Engagement is inhibited to Prevent Frost and Ice Build Up on the EvaporatorA/C Clutch Engagement is inhibited to Prevent an Engine Stall during a Low Engine SpeedconditionA/C Clutch Engagement is inhibited to Protect the Compressor from a Compressor Over-speedconditionA/C Clutch Engagement is inhibited to temporarily make more power available whenAccelerator Pedal is Fully DepressedA/C Clutch Engagement is inhibited because Low A/C Refrigerant Charge has been detectedA/C Clutch Engagement is inhibited to Protect the Compressor from Operating at Too Low ofan Ambient TemperatureA/C Clutch Engagement is inhibited due to Missing Climate Control MessageA/C Clutch Engagement is inhibited because the strategy is operating in Failsafe Cooling ModeA/C Clutch Engagement is inhibited to Protect the Clutch from Damage because theCompressor Load and Speed are Too HighA/C Clutch Engagement is inhibited by the off portion of the A/C Cycling Strategy invoked tomanage High Engine TemperatureA/C Clutch Engagement is inhibited due to Low Battery State of ChargeA/C Clutch Engagement is inhibited to Protect the Variable Displacement Compressor fromOperating at Too Low of a TemperatureA/C Clutch Engagement is inhibited to improve Brake Booster Vacuum

Feedback



A/C Clutch Engagement is inhibited because Evaporator Temperature is sufficiently low andcompressor was at minimum displacementA/C Clutch Engagement is inhibited (Disabled) because the Evaporator Temperature issufficiently below the target temperatureA/C Clutch Engagement is inhibited to satisfy A/C Clutch minimum off timeA/C Clutch Engagement is inhibited Due to Request from Torque Control Strategy (toTemporarily Make More Power Available)A/C Clutch Engagement is inhibited to Prevent Engine StallingA/C Clutch Engagement is inhibited Due to Request to Disable A/C from Stop-Start StrategyA/C Clutch Engagement is inhibited (Delayed) to make Power Available for Power SteeringA/C Clutch Engagement Is Inhibited Due To State Of Auxiliary A/C Disable (Typically APressure Or Temperature) Switch 1 inputA/C Clutch Engagement is inhibited due to state of auxiliary A/C Disable (Typically a Pressureor Temperature) Switch 2 input

Are any of the conditions described above not within normal parameters?

The A/C Is Always On - A/C Mode Always Commanded On



Control System Logic




P1464A/C Demand Out Of Self TestRange

This DTC sets when the PCM senses an A/C request during aPCM self-test.

Possible Sources

A/C clutch relay


PCM

Feedback




FCIM

PINPOINT TEST H : THE A/C (AIR CONDITIONING) IS ALWAYS ON - A/C (AIR CONDITIONING)MODE ALWAYS COMMANDED ON

H1 RECHECK THE PCM (POWERTRAIN CONTROL MODULE) DIAGNOSTIC TROUBLE CODES(DTCS)

Yes GO toH2

No

IGNORE the DTC and CONTINUE diagnosingother Diagnostic Trouble Codes (DTCs) orsymptoms. GO to the DTC Chart: PCM orSymptom Chart – Climate Control in this section.

Ignition ON.

Make sure the HVAC control module is powered off.

Using a diagnostic scan tool, clear the PCM Diagnostic Trouble Codes (DTCs).

Using a diagnostic scan tool, carry out the PCM KOEO self-test.

Does DTC P1464 return?

H2 CHECK THE A/C (AIR CONDITIONING) CLUTCH RELAY

Yes GO toH3

No INSTALL a newA/C clutch relay.

Carry out the component test on the A/C clutch relay. Refer to Wiring Diagrams Cell 149 forschematic and connector information.


Feedback





H3 CHECK THE A/C (AIR CONDITIONING) COMPRESSOR CLUTCH FIELD COIL VOLTAGESUPPLY CIRCUIT FOR A SHORT TO VOLTAGE


No GO toH4

Ignition OFF.

Disconnect A/C compressor clutch field coil C100.

Disconnect the A/C clutch relay.

Ignition ON.

Measure:


Negative Lead

C100-1

Ground


H4 COMPARE THE FCIM (FRONT CONTROLS INTERFACE MODULE) A/C EVAPORATORTEMPERATURE (EVAP_TEMP) PID (PARAMETER IDENTIFICATION) TO THE PCM(POWERTRAIN CONTROL MODULE) AMBIENT AIR TEMPERATURE (AAT) PID (PARAMETERIDENTIFICATION)

Yes GO toH5

No GO toPinpoint TestP

Ignition OFF.


Ignition ON.


Feedback










H5 CHECK THE FCIM (FRONT CONTROLS INTERFACE MODULE) A/C (AIR CONDITIONING)SWITCH STATUS (CC_SW_AC) PID (PARAMETER IDENTIFICATION)

Yes GO toH6

No GO toH9

Ignition ON.

Using a diagnostic scan tool, view FCIM Parameter Identifications (PIDs).

Monitor the CC_SW_AC PID .

Select panel mode, press and release the A/C button (indicator off) on the FCIM controls.

Does the PID display Active when pressed and Inactive when released?

H6 CHECK THE A/C (AIR CONDITIONING) PRESSURE SENSOR (ACP_PRESS) PARAMETERIDENTIFICATION (PID)

Yes GO toH7

No DIAGNOSE the A/C pressuretransducer. GO to Pinpoint Test A


With a manifold gauge set connected, compare the pressure readings of the manifold gauge setand the PCM Parameter Identification (PID) ACP_PRESS.


Feedback







H7 CHECK THE PCM (POWERTRAIN CONTROL MODULE) A/C (AIR CONDITIONING) REQUESTSIGNAL (AC_REQ) PID (PARAMETER IDENTIFICATION) WITH THE A/C (AIR CONDITIONING)OFF

Yes GO toH10

No GO toH8


Monitor the AC_REQ PID .

While in panel mode, release the A/C button (indicator off) on the HVAC controls.

Does the PID display No or OFF?

H8 CHECK THE PCM (POWERTRAIN CONTROL MODULE) A/C (AIR CONDITIONING) REQUESTSIGNAL (AC_REQ) PID (PARAMETER IDENTIFICATION) WITH FCIM (FRONT CONTROLSINTERFACE MODULE) DISCONNECTED

Yes GO toH10

No GO toH9

Ignition OFF.


Ignition ON.


Monitor the AC_REQ PID .

Does the PID display No or OFF?

H9 CHECK FOR CORRECT FCIM (FRONT CONTROLS INTERFACE MODULE) OPERATION

Feedback







Yes


No


Ignition OFF.


Repair:







H10 CHECK FOR CORRECT PCM (POWERTRAIN CONTROL MODULE) OPERATION

Feedback



Yes





No

The system is operating correctly at this time. Theconcern may have been caused by moduleconnections. ADDRESS the root cause of anyconnector or pin issues.

Ignition OFF.


Repair:





Operate the system and verify the concern is still present.


The Temperature Control Is Inoperative Or Does Not Operate Correctly - Driver Side

Feedback








Temperature Door Actuator - Driver side,


During an actuator calibration cycle, the FCIM drives the temperature door until the door reaches bothinternal stops in the HVAC case. If the temperature door is temporarily obstructed or binding during acalibration cycle, the module may interpret this as the actual end of travel for the door. When thiscondition occurs and the module commands the actuator to its end of travel, the airflow may not bethe expected temperature.



B1081:11

Left TemperatureDamper Motor:Circuit Short ToGround

This DTC sets when the module senses lower than expectedvoltage on an actuator motor circuit when voltage is applied to drivethe motor, indicating a short to ground. The motor can move only inone direction.

B1081:12

Left TemperatureDamper Motor:Circuit Short ToBattery


B1081:13Left TemperatureDamper Motor: OpenCircuit

This DTC sets when the module senses no voltage on the actuatormotor circuit when ground is applied to drive the motor, indicatingan open circuit. The motor cannot move.

B11E5:12

Left HVAC DamperPosition Sensor:Circuit Short toBattery


B11E5:14

Left HVAC DamperPosition Sensor:Circuit Short toGround or Open


Possible Sources


Feedback




Temperature door actuator

Temperature door is binding or stuck

FCIM

PINPOINT TEST I : THE TEMPERATURE CONTROL IS INOPERATIVE OR DOES NOT OPERATECORRECTLY - DRIVER SIDE

I1 CHECK THE DRIVER SIDE TEMPERATURE DOOR ACTUATOR CIRCUITS FOR A SHORT TOVOLTAGE


No GO toI2

Ignition OFF.



Ignition ON.

Measure:


Negative Lead

C2091-1

Ground

C2091-2

Ground

C2091-3

Ground

C2091-4

Ground

Feedback





Negative Lead

C2091-6

Ground


I2 CHECK THE DRIVER SIDE TEMPERATURE DOOR ACTUATOR CIRCUITS FOR A SHORT TOGROUND

Yes GO toI3


Ignition OFF.

Measure:


Negative Lead

C2091-1

Ground

C2091-2

Ground

C2091-3

Ground

C2091-4

Ground

C2091-6

Ground


I3 CHECK THE DRIVER SIDE TEMPERATURE DOOR ACTUATOR CIRCUITS FOR AN OPEN

Feedback




Yes GO toI4


Measure:


Negative Lead

C2091-1

C2402A-8

C2091-2

C2402A-2

C2091-3

C2402A-3

C2091-4

C2402A-10

C2091-6

C2402A-9


I4 CHECK THE DRIVER SIDE TEMPERATURE DOOR ACTUATOR CIRCUITS FOR A SHORTTOGETHER

Yes

INSTALL a new driver side temperature dooractuator.

REFER to: Driver Side Temperature DoorActuator(412-00 Climate Control System -General Information, Removal and Installation).

TEST the system for normal operation. If theconcern is still present, GO to I5


Feedback











Measure:


Negative Lead

C2091-1

C2091-2

C2091-1

C2091-3

C2091-1

C2091-4

C2091-1

C2091-6

C2091-2

C2091-3

C2091-2

C2091-4

C2091-2

C2091-6

C2091-3

C2091-4

C2091-3

C2091-6

C2091-4

C2091-6

Feedback




I5 CHECK FOR CORRECT FCIM (FRONT CONTROLS INTERFACE MODULE) OPERATION

Yes


No


Ignition OFF.


Repair:







The Temperature Control Is Inoperative Or Does Not Operate Correctly - Passenger Side



Temperature Door Actuator - Passenger side,

During an actuator calibration cycle, the FCIM drives the temperature door until the door reaches bothinternal stops in the HVAC case. If the temperature door is temporarily obstructed or binding during acalibration cycle, the module may interpret this as the actual end of travel for the door. When this

Feedback



condition occurs and the module commands the actuator to its end of travel, the airflow may not bethe expected temperature.



B1082:11

Right TemperatureDamper Motor:Circuit Short ToGround

This DTC sets when the module senses lower than expectedvoltage on an actuator motor circuit when voltage is applied todrive the motor, indicating a short to ground. The motor can moveonly in one direction.

B1082:12

Right TemperatureDamper Motor:Circuit Short ToBattery


B1082:13Right TemperatureDamper Motor: OpenCircuit

This DTC sets when the module senses no voltage on the actuatormotor circuit when ground is applied to drive the motor, indicatingan open circuit. The motor can not move.

B11E6:12

Right HVAC DamperPosition Sensor:Circuit Short toBattery


B11E6:14

Right HVAC DamperPosition Sensor:Circuit Short toGround or Open


Possible Sources


Temperature door actuator

Temperature door is binding or stuck

FCIM

PINPOINT TEST J : THE TEMPERATURE CONTROL IS INOPERATIVE OR DOES NOT OPERATECORRECTLY - PASSENGER SIDE

Feedback



J1 CHECK THE PASSENGER SIDE TEMPERATURE DOOR ACTUATOR CIRCUITS FOR ASHORT TO VOLTAGE


No GO toJ2

Ignition OFF.


Disconnect FCIM C2402B .

Ignition ON.

Measure:


Negative Lead

C2402A-2

Ground

C2402A-3

Ground


Negative Lead

C2402B-13

Ground

C2402B-18

Ground

C2402B-14

Ground


J2 CHECK THE PASSENGER SIDE TEMPERATURE DOOR ACTUATOR CIRCUITS FOR ASHORT TO GROUND

Feedback




Yes GO toJ3


Ignition OFF.

Measure:


Negative Lead

C2402A-2

Ground

C2402A-3

Ground


Negative Lead

C2402B-13

Ground

C2402B-18

Ground

C2402B-14

Ground


J3 CHECK THE PASSENGER SIDE TEMPERATURE DOOR ACTUATOR CIRCUITS FOR ANOPEN

Yes GO toJ4


NOTE

Feedback





Access to the connector in the following step is difficult. Before carrying out this step, visually inspectthe harness for obvious damage. If no damage is evident, proceed with the test.


Measure:


Negative Lead

C2092-2

C2402A-2

C2092-3

C2402A-3


Negative Lead

C2092-1

C2402B-13

C2092-4

C2402B-18

C2092-6

C2402B-14


J4 CHECK THE PASSENGER SIDE TEMPERATURE DOOR ACTUATOR CIRCUITS FOR ASHORT TOGETHER

Yes

INSTALL a new passenger side temperature dooractuator.

REFER to: Passenger Side Temperature DoorActuator(412-00 Climate Control System -General Information, Removal and Installation).

TEST the system for normal operation. If theconcern is still present, GO to J5

Feedback











Measure:


Negative Lead

C2092-1

C2092-2

C2092-1

C2092-3

C2092-1

C2092-4

C2092-1

C2092-6

C2092-2

C2092-3

C2092-2

C2092-4

C2092-2

C2092-6

C2092-3

C2092-4

C2092-3

C2092-6

Feedback




Negative Lead

C2092-4

C2092-6


J5 CHECK FOR CORRECT FCIM (FRONT CONTROLS INTERFACE MODULE) OPERATION

Yes


No


Ignition OFF.


Repair:







The Blower Motor Is Inoperative



Feedback



Voltage is supplied to the blower motor relay switched contact from the BJB . Ground to the relay coilis a dedicated circuit. When the blower motor relay coil receives power from the FCIM , the relay coilis energized and voltage is delivered to the blower motor control module. Power and ground for theblower motor is provided by the blower motor control module. The FCIM sends a PWM signal to theblower motor control module to control the blower motor speed.



B10AF:11

Blower FanRelay:Circuit ShortTo Ground

This DTC sets when the module senses low voltage on the blower motorrelay coil voltage circuit when the module is energizing the circuit. Theblower motor relay is permanently inactive.

B10AF:15

Blower FanRelay:Circuit ShortTo Battery orOpen

This DTC sets when the module senses greater than expected voltage onthe blower motor relay coil voltage circuit, indicating an open circuit or ashort to voltage. The blower motor relay is inactive when circuit is open; theblower motor relay is on all the time when shorted to battery.

B10B9:12

BlowerControl:Circuit ShortTo Battery

This DTC sets when the module senses high voltage on the blower motorcontrol PWM circuit, indicating a short directly to voltage. The blower motoris inoperative.

B10B9:14

BlowerControl:Circuit ShortTo Groundor Open

This DTC sets when the module senses no voltage on the blower motorcontrol PWM circuit, indicating a short directly to ground or an open circuit.The blower motor runs at full speed if the circuit is shorted to ground. Theblower motor is inoperative if the circuit is open.

Possible Sources


Fuse

Blower motor relay

Blower motor control module

FCIM


Inspect BJB fuse 43 (40A).

Feedback



PINPOINT TEST K : THE BLOWER MOTOR IS INOPERATIVE

K1 CHECK THE BLOWER MOTOR RELAY

Yes GO toK2

No INSTALL a newblower motor relay.

Ignition OFF.

Disconnect Blower motor relay.

Carry out the component test on the blower motor relay. Refer to Wiring Diagrams Cell 149 forschematic and connector information.


K2 CHECK THE BLOWER MOTOR RELAY SWITCH CONTACT SUPPLY VOLTAGE

Yes GO toK3

No

VERIFY BJB fuse 43 (40A) is OK. If OK, REPAIRthe circuit. If not OK, REFER to the WiringDiagrams manual to identify the possible causesof the circuit short.

Ignition ON.

Measure:

Positive Lead Measurement / Action Negative LeadFeedback






Blower motor relay socket 3

Ground

Is the voltage greater than 11 volts?

K3 CHECK THE BLOWER MOTOR RELAY COIL GROUND CIRCUIT FOR AN OPEN

Yes GO toK4


Ignition OFF.

Measure:



Ground


K4 CHECK THE BLOWER MOTOR RELAY COIL CONTROL CIRCUIT FOR A SHORT TOGROUND

Yes GO toK5

Feedback







Measure:



Ground


K5 CHECK THE BLOWER MOTOR RELAY COIL CONTROL CIRCUIT FOR AN OPEN

Yes GO toK6


Measure:



C2402A-11


Feedback




K6 CHECK THE BLOWER MOTOR CONTROL MODULE CIRCUITS FOR A SHORT TO VOLTAGE


No GO toK7

Ignition OFF.

Disconnect Blower motor control module C297 .

Measure:


Negative Lead

C297-3

Ground

C297-4

Ground


K7 CHECK THE BLOWER MOTOR CONTROL MODULE CIRCUITS FOR A SHORT TO GROUND

Yes GO toK8


Ignition OFF.

Measure:


Negative Lead

C297-3

Ground

Feedback






Negative Lead

C297-4

Ground


K8 CHECK THE BLOWER MOTOR CONTROL MODULE CIRCUITS FOR AN OPEN

Yes GO toK9


Measure:


Negative Lead

C297-1

Ground


C297-3



Negative Lead

C297-4

C2402A-23


Feedback




K9 CHECK THE BLOWER MOTOR CONTROL MODULE CIRCUITS FOR A SHORT TOGETHER

Yes

INSTALL a new blower motor control module.

REFER to: Blower Motor Control Module(412-00Climate Control System - General Information,Removal and Installation).

TEST the system for normal operation. If theconcern is still present, GO to K10

No REPAIR thecircuits.

Measure:


Negative Lead

C297-1

C297-3

C297-1

C297-4

C297-3

C297-4


K10 CHECK FOR CORRECT FRONT CONTROLS INTERFACE MODULE (FCIM) OPERATION

Yes


No


Ignition OFF.

Feedback






Repair:







The Blower Motor Does Not Operate Correctly



Voltage is supplied to the blower motor relay switched contact from the BJB . Ground to the relay coilis a dedicated circuit. When the blower motor relay coil receives power from the FCIM , the relay coilis energized and voltage is delivered to the blower motor control module. Power and ground for theblower motor is provided by the blower motor control module. The FCIM sends a PWM signal to theblower motor control module to control the blower speed.



B10AF:15

Blower FanRelay:Circuit ShortTo Battery orOpen

This DTC sets when the module senses greater than expected voltage onthe blower motor relay coil voltage circuit, indicating an open circuit or ashort to voltage. The blower motor relay is inactive when circuit is open; theblower motor relay is on all the time when shorted to battery.

B10B9:14

BlowerControl:Circuit ShortTo Groundor Open

This DTC sets when the module senses no voltage on the blower motorcontrol PWM circuit, indicating a short directly to ground or an open circuit.The blower motor runs at full speed if the circuit is shorted to ground. Theblower motor is inoperative if the circuit is open.

Possible Sources


Feedback



Blower motor relay

Blower motor control module

FCIM

PINPOINT TEST L : THE BLOWER MOTOR DOES NOT OPERATE CORRECTLY

L1 VERIFY THE BLOWER MOTOR OPERATION

Yes GO toL2

No GO toPinpoint TestK

Ignition ON.

Select panel on the HVAC controls and, starting with LO, operate the blower motor in allsettings. Observe the blower motor operation in each setting.

Does the blower motor operate at any setting?

L2 CHECK THE BLOWER MOTOR CONTROL MODULE PWM (PULSE WIDTH MODULATION)CIRCUIT FOR A SHORT TO VOLTAGE


No GO toL3

Ignition OFF.

Disconnect Blower motor control module C297 .


Ignition ON.

Measure:

Feedback








Negative Lead

C297-4

Ground


L3 CHECK THE BLOWER MOTOR CONTROL MODULE PWM (PULSE WIDTH MODULATION)CIRCUIT FOR A SHORT TO GROUND

Yes GO toL4


Ignition OFF.

Measure:


Negative Lead

C297-4

Ground


L4 CHECK THE BLOWER MOTOR RELAY COIL CONTROL CIRCUIT FOR A SHORT TOVOLTAGE


No GO toL5

Ignition OFF.

Disconnect Blower motor relay.

Ignition ON.

Measure:

Feedback







Ground


L5 CHECK THE BLOWER MOTOR OPERATION WITH THE BLOWER MOTOR RELAYDISCONNECTED

Yes REPAIR the blower motor control module voltagecircuit CH402 (YE/GN) for a short to voltage.

No GO toL6

Ignition OFF.

Connect Blower motor control module C297 .

Connect FCIM C2402A .

Ignition ON.

Operate the HVAC system and determine if the concern is still present.

Does the fan still operate all the time?

L6 CHECK FOR CORRECT BLOWER MOTOR CONTROL MODULE OPERATION

Yes

INSTALL a new blower motor control module.

REFER to: Blower Motor Control Module(412-00Climate Control System - General Information,Removal and Installation).

TEST the system for normal operation. If theconcern is still present, GO to L7

Feedback






No


Ignition OFF.

Disconnect and inspect the blower motor control module connector.

Repair:




Reconnect the blower motor control module connector. Make sure it seats and latches correctly.



L7 CHECK FOR CORRECT FCIM (FRONT CONTROLS INTERFACE MODULE) OPERATION

Yes


No


Ignition OFF.


Repair:



Feedback







Air Discharge Temperature Sensor Circuit Faults



The 4 air discharge temperature sensors contain a thermistor. The sensor varies its resistance withthe temperature. As the temperature rises, the resistance falls. As the temperature falls, theresistance rises.




B10B3:11Right Panel Air DischargeTemperature: Circuit Short ToGround

This DTC sets when the FCIM senses erraticvoltages from the right panel air dischargetemperature sensor.

B10B3:15Right Panel Air DischargeTemperature: Circuit Short ToBattery or Open


B10B4:11Right Floor Air DischargeTemperature: Circuit Short ToGround


B10B4:15Right Floor Air DischargeTemperature: Circuit Short ToBattery or Open


B10B5:11Left Panel Air DischargeTemperature: Circuit Short ToGround

This DTC sets when the FCIM senses erraticvoltages from the left panel air discharge temperaturesensor.

Feedback





B10B5:15Left Panel Air DischargeTemperature: Circuit Short ToBattery or Open

This DTC sets when the FCIM senses erraticvoltages from the left panel air discharge temperaturesensor.

B10B6:11Left Floor Air DischargeTemperature: Circuit Short ToGround

This DTC sets when the FCIM senses erraticvoltages from the left floor air discharge temperaturesensor.

B10B6:15Left Floor Air DischargeTemperature: Circuit Short ToBattery or Open

This DTC sets when the FCIM senses erraticvoltages from the left floor air discharge temperaturesensor.

Possible Sources


Air discharge temperature sensor(s)

FCIM

PINPOINT TEST M : AIR DISCHARGE TEMPERATURE SENSOR CIRCUIT FAULTS

M1 CHECK THE AIR DISCHARGE TEMPERATURE SENSOR OUTPUT VOLTAGE CIRCUIT

Yes

INSTALL a new air discharge temperaturesensor. Refer to the appropriate section in Group412 for the procedure. CLEAR the DiagnosticTrouble Codes (DTCs). REPEAT the self-test. IfDTC returns, GO to M9

No GO toM2

NOTICEUse the correct probe adapter(s) when making measurements. Failure to use the correct probeadapter(s) may damage the connector.

Ignition OFF.

Disconnect the suspect air discharge temperature sensor:

Driver side footwell air discharge temperature sensor C2436

Feedback





Driver side register air discharge temperature sensor C2438

Passenger side footwell air discharge temperature sensor C2437

Passenger side register air discharge temperature sensor C2439

Ignition ON.

Turn the HVAC system on.

Measure:

Driver side footwell air discharge temperature sensor


Negative Lead

C2436-1

C2436-2

Driver side register air discharge temperature sensor


Negative Lead

C2438-1

C2438-2

Passenger side footwell air discharge temperature sensor


Negative Lead

C2437-1

C2437-2

Passenger side register air discharge temperature sensor


Negative Lead

Feedback




Negative Lead

C2439-1

C2439-2

Is the voltage between 4.7 and 5.1 volts?

M2 CHECK THE AIR DISCHARGE TEMPERATURE SENSOR SIGNAL CIRCUIT FOR A SHORTTO VOLTAGE


No GO toM3

Ignition OFF.



Ignition ON.

Measure:



Negative Lead

C2436-1

Ground



Negative Lead

C2438-1

Ground

Feedback






Negative Lead

C2437-1

Ground



Negative Lead

C2439-1

Ground


M3 CHECK THE AIR DISCHARGE TEMPERATURE SENSOR SIGNAL RETURN CIRCUIT FOR ASHORT TO VOLTAGE


No GO toM4

Measure:



Negative Lead

C2436-2

Ground


Feedback






Negative Lead

C2438-2

Ground



Negative Lead

C2437-2

Ground



Negative Lead

C2439-2

Ground


M4 CHECK THE AIR DISCHARGE TEMPERATURE SENSOR SIGNAL CIRCUIT FOR A SHORTTO GROUND

Yes GO toM5


Ignition OFF.

Measure:


Feedback






Negative Lead

C2436-1

Ground



Negative Lead

C2438-1

Ground



Negative Lead

C2437-1

Ground



Negative Lead

C2439-1

Ground


M5 CHECK THE AIR DISCHARGE TEMPERATURE SENSOR SIGNAL RETURN CIRCUIT FOR ASHORT TO GROUND

Yes GO toM6

Feedback





Measure:



Negative Lead

C2436-2

Ground



Negative Lead

C2438-2

Ground



Negative Lead

C2437-2

Ground



Negative Lead

C2439-2

Ground


Feedback



M6 CHECK THE AIR DISCHARGE TEMPERATURE SENSOR SIGNAL CIRCUIT FOR AN OPEN

Yes GO toM7


Measure:



Negative Lead

C2436-1

C2402B-5



Negative Lead

C2438-1

C2402B-4



Negative Lead

C2437-1

C2402B-11



Negative Lead

Feedback





Negative Lead

C2439-1

C2402B-10


M7 CHECK THE AIR DISCHARGE TEMPERATURE SENSOR SIGNAL RETURN CIRCUIT FORAN OPEN

Yes GO toM8


Measure:



Negative Lead

C2436-2

C2402A-2



Negative Lead

C2438-2

C2402A-2



Negative Lead

Feedback





Negative Lead

C2437-2

C2402A-2



Negative Lead

C2439-2

C2402A-2


M8 CHECK AIR DISCHARGE TEMPERATURE SENSOR SIGNAL CIRCUIT AND THE SIGNALRETURN FOR A SHORT TO TOGETHER

Yes

INSTALL a new air discharge temperaturesensor. Refer to the appropriate section in Group412 for the procedure. CLEAR the DiagnosticTrouble Codes (DTCs). REPEAT the self-test. IfDTC returns, GO to M9


Disconnect the driver side footwell air discharge temperature sensor C2436

Disconnect the driver side register air discharge temperature sensor C2438

Disconnect the passenger side footwell air discharge temperature sensor C2437

Disconnect the passenger side register air discharge temperature sensor C2439

Measure:



Negative Lead

Feedback





Negative Lead

C2436-1

C2436-2



Negative Lead

C2438-1

C2438-2



Negative Lead

C2437-1

C2437-2



Negative Lead

C2439-1

C2439-2


M9 CHECK FOR CORRECT FCIM (FRONT CONTROLS INTERFACE MODULE) OPERATION Feedback



Yes


No


Ignition OFF.


Repair:







B105A:12, B105A:14, B1A61:11, B1A61:15, B1A69:12, B1A69:14



In-Vehicle Temperature and Humidity Sensor,




Feedback





B105A:12

CabinTemperatureSensor Fan:Circuit Short ToBattery

This DTC sets when the module senses higher than expected voltageon the in-vehicle temperature and humidity sensor fan motor circuit.The in-vehicle temperature and humidity sensor fan motor is inactive.

B105A:14

CabinTemperatureSensor Fan:Circuit Short ToGround or Open

This DTC sets when the module senses no voltage on the in-vehicletemperature and humidity sensor fan motor circuit, indicating an openor a short directly to ground. The in-vehicle temperature and humiditysensor fan motor is active.

B1A61:11

CabinTemperatureSensor: CircuitShort to Ground

This DTC sets when the module senses lower than expected voltageon the in-vehicle temperature and humidity sensor feedback circuit,indicating a short to ground.

B1A61:15

CabinTemperatureSensor: CircuitShort to Battery orOpen

This DTC sets when the module senses greater than expectedvoltage on the in-vehicle temperature and humidity sensor feedbackcircuit, indicating a short to voltage or an open circuit or sensor.

B1A69:12Humidity Sensor:Circuit Short ToBattery

This DTC sets when the module senses greater than expectedvoltage on the in-vehicle temperature and humidity sensor humidityinput circuit, indicating a short to voltage.

B1A69:14Humidity Sensor:Circuit Short ToGround or Open

This DTC sets when the module senses no voltage on the in-vehicletemperature and humidity sensor humidity input circuit, indicating ashort to ground or an open circuit or sensor.

Possible Sources

Fuse


In-vehicle temperature and humidity sensor

FCIM


Make sure the in-vehicle temperature and humidity sensor harness is not chaffed.

PINPOINT TEST N : B105A:12, B105A:14, B1A61:11, B1A61:15, B1A69:12, B1A69:14

Feedback



N1 CHECK THE IN-VEHICLE TEMPERATURE AND HUMIDITY SENSOR CIRCUITS FOR ASHORT TO VOLTAGE


No GO toN2

Ignition OFF.




Disconnect BCM fuse 21 (5A).

Ignition ON.

Measure:


Negative Lead

C2247-1

Ground

C2247-2

Ground

C2247-3

Ground

C2247-4

Ground

C2247-5

Ground

C2247-6

Ground

Feedback





N2 CHECK THE IN-VEHICLE TEMPERATURE AND HUMIDITY SENSOR CIRCUITS FOR ASHORT TO GROUND

Yes GO toN3


Ignition OFF.

Measure:


Negative Lead

C2247-1

Ground

C2247-2

Ground

C2247-3

Ground

C2247-4

Ground

C2247-5

Ground

C2247-6

Ground


N3 CHECK THE IN-VEHICLE TEMPERATURE AND HUMIDITY SENSOR CIRCUITS FOR ANOPEN

Yes GO toN4

Feedback






Measure:


Negative Lead

C2247-3

C2402A-3

C2247-5

C2402A-2


Negative Lead

C2247-1

C2402B-27

C2247-2

C2402B-29

C2247-4

C2402B-19


C2247-6

BCM fuse 21 cavity,(component side)


N4 CHECK THE IN-VEHICLE TEMPERATURE AND HUMIDITY SENSOR CIRCUITS FOR ASHORT TOGETHER

Feedback



Yes GO toN5






Measure:


Negative Lead

C2247-1

C2247-2

C2247-1

C2247-3

C2247-1

C2247-4

C2247-1

C2247-5

C2247-1

C2247-6

C2247-2

C2247-3

C2247-2

C2247-4

C2247-2

C2247-5

C2247-2

C2247-6

Feedback





Negative Lead

C2247-3

C2247-4

C2247-3

C2247-5

C2247-3

C2247-6

C2247-4

C2247-5

C2247-4

C2247-6

C2247-5

C2247-6


N5 CHECK FOR CORRECT IN-VEHICLE TEMPERATURE AND HUMIDITY SENSOR OPERATION

Yes

INSTALL a new in-vehicle temperature andhumidity sensor.

REFER to: In-Vehicle Temperature and HumiditySensor(412-00 Climate Control System - GeneralInformation, Removal and Installation).

TEST the system for normal operation. If theconcern is still present, GO to N6

No


Ignition OFF.

Inspect the disconnected connectors.

Feedback





Repair:




Reconnect all disconnected connectors. Make sure they seat and latch correctly.



N6 CHECK FOR CORRECT FCIM (FRONT CONTROLS INTERFACE MODULE) OPERATION

Yes


No


Ignition OFF.


Repair:







Feedback



B1A63:11, B1A63:15, B1A64:11, B1A64:15



Sunload Sensor,




B1A63:11Right Solar Sensor:Circuit Short ToGround

This DTC sets when the control module senses lower than expectedvoltage on the RH sensor feedback circuit, indicating a short toground.

B1A63:15Right Solar Sensor:Circuit Short ToBattery or Open

This DTC sets when the control module senses higher thanexpected voltage on the RH sensor feedback circuit, indicating ashort to voltage or an open circuit or sensor.

B1A64:11Left Solar Sensor:Circuit Short ToGround

This DTC sets when the control module senses lower than expectedvoltage on the LH sensor feedback circuit, indicating a short toground.

B1A64:15Left Solar Sensor:Circuit Short ToBattery or Open

This DTC sets when the control module senses higher thanexpected voltage on the LH sensor feedback circuit, indicating ashort to voltage or an open circuit or sensor.

Possible Sources


Sunload sensor

FCIM


Inspect loose or corroded FCIM and sunload sensor connections.

PINPOINT TEST O : B1A63:11, B1A63:15, B1A64:11, B1A64:15

Feedback




O1 CHECK THE SUNLOAD SENSOR CIRCUITS FOR A SHORT TO VOLTAGE


No GO toO2

Ignition OFF.

Disconnect Autolamp/sunload sensor C286 .


Disconnect BCM C2280B .

Ignition ON.

Measure:


Negative Lead

C286-1

Ground

C286-2

Ground

C286-3

Ground

C286-4

Ground


O2 CHECK THE SUNLOAD SENSOR CIRCUITS FOR A SHORT TO GROUND

Yes GO toO3


Ignition OFF.

Feedback





Measure:


Negative Lead

C286-1

Ground

C286-2

Ground

C286-3

Ground

C286-4

Ground


O3 CHECK THE SUNLOAD SENSOR SIGNAL CIRCUITS FOR AN OPEN

Yes GO toO4


Measure:


Negative Lead

C286-1

C2402B-22

C286-3

C2402B-21


Negative Lead

C286-2

C2280B-24

Feedback





Negative Lead

C286-4

C2280B-22


O4 CHECK THE SUNLOAD SENSOR SIGNAL CIRCUITS FOR A SHORT TO EACH OTHER

Yes

INSTALL a new sunload sensor.

REFER to: Sunload Sensor(412-00 ClimateControl System - General Information, Removaland Installation).

TEST the system for normal operation. If theconcern is still present, GO to O5


Measure:


Negative Lead

C286-1

C286-2

C286-1

C286-3

C286-1

C286-4

C286-2

C286-3

C286-2

C286-4

C286-3

C286-4

Feedback






O5 CHECK FOR CORRECT FCIM (FRONT CONTROLS INTERFACE MODULE) OPERATION

Yes


No


Ignition OFF.


Repair:







B1B71:11, B1B71:15



Evaporator Temperature Sensor,


Feedback






B1B71:11

EvaporatorTemperatureSensor: CircuitShort To Ground

The module senses excessive voltage drop on the sensor referencevoltage circuit, indicating a short directly to ground. The moduledefaults to calculated evaporator temperature and the compressor isshut off.

B1B71:15

EvaporatorTemperatureSensor: CircuitShort To Battery orOpen

The module senses no voltage drop on the sensor reference voltagecircuit, indicating a short directly to voltage or an open circuit orsensor. The module defaults to calculated evaporator temperatureand the compressor is shut off.

Possible Sources


Evaporator temperature sensor

FCIM

PINPOINT TEST P : B1B71:11, B1B71:15

P1 COMPARE THE FCIM (FRONT CONTROLS INTERFACE MODULE) A/C EVAPORATORTEMPERATURE (EVAP_TEMP) PID (PARAMETER IDENTIFICATION) TO THE PCM(POWERTRAIN CONTROL MODULE) AMBIENT AIR TEMPERATURE (AAT) PID (PARAMETERIDENTIFICATION)

Yes

IGNORE the DTC and CONTINUE diagnosingother Diagnostic Trouble Codes (DTCs) orsymptoms. GO to the DTC Chart: FCIM orSymptom Chart – Climate Control in this section.

No GO toP2

Ignition OFF.


Ignition ON.

Feedback








Are the temperature values similar (typically within 18ºC (32.4ºF)) and stable?

P2 CHECK THE EVAPORATOR TEMPERATURE SENSOR CIRCUITS FOR A SHORT TOVOLTAGE


No GO toP3


Ignition ON.

Measure:


Negative Lead

C2402A-19

Ground

C2402A-2

Ground


P3 CHECK THE EVAPORATOR TEMPERATURE SENSOR CIRCUITS FOR A SHORT TOGROUND

Yes GO toP4


Feedback





Ignition OFF.

Measure:


Negative Lead

C2402A-19

Ground

C2402A-2

Ground


P4 CHECK THE EVAPORATOR TEMPERATURE SENSOR CIRCUITS FOR AN OPEN

Yes GO toP5


NOTEAccess to the connector in the following step is difficult. Before carrying out this step, visually inspectthe harness for obvious damage. If no damage is evident, proceed with the test.

Disconnect Evaporator temperature sensor C296 .

Measure:


Negative Lead

C296-1

C2402A-2

C296-2

C2402A-19


Feedback




P5 CHECK THE EVAPORATOR TEMPERATURE SENSOR CIRCUITS FOR A SHORT TOGETHER

Yes

INSTALL a new evaporator temperature sensor.

REFER to: Evaporator Temperature Sensor(412-00 Climate Control System - General Information,Removal and Installation).

TEST the system for normal operation. If theconcern is still present, GO to P6


Measure:


Negative Lead

C296-1

C296-2


P6 CHECK FOR CORRECT FCIM (FRONT CONTROLS INTERFACE MODULE) OPERATION

Yes


No


Ignition OFF.


Repair:

Feedback











C1B14:11, C1B14:12



A 5-volt reference voltage and ground is supplied to the climate control sensors and actuators fromthe FCIM .



C1B14:11Sensor Supply VoltageA: Circuit Short toGround

This DTC sets when the module senses less than 5 volts on thesensor reference voltage circuit, indicating a short to ground.

C1B14:12Sensor Supply VoltageA: Circuit Short toBattery

This DTC sets when the module senses greater than 5 volts onthe sensor reference voltage circuit, indicating a short tovoltage.

Possible Sources


FCIM

PINPOINT TEST Q : C1B14:11, C1B14:12

Q1 CHECK THE FCIM (FRONT CONTROLS INTERFACE MODULE) DTCS

Yes GO toQ2

Feedback




No GO toQ5

Ignition ON.

Using a diagnostic scan tool, perform FCIM self-test.

Is DTC C1B14:11 present?

Q2 CHECK THE REFERENCE VOLTAGE CIRCUIT FOR A SHORT TO GROUND

Yes GO toQ3


Ignition OFF.


Measure:


Negative Lead

C2402A-3

Ground


Q3 CHECK THE REFERENCE VOLTAGE CIRCUIT AND THE SIGNAL RETURN CIRCUIT FOR ASHORT TOGETHER

Yes GO toQ6

No GO toQ4

Ignition OFF.

Measure:

Feedback









Negative Lead

C2402A-3

C2402A-2

Is the resistance greater than 200 ohms?

Q4 CHECK THE A/C (AIR CONDITIONING) COMPONENTS

Yes

INSTALL a new sensor or actuator (the last oneto be disconnected). Refer to the appropriatesection in Group 412 for the procedure. Wheninstalling an actuator, CONNECT the actuatorelectrical connector before the FCIM . This allowsthe actuator to be calibrated when the FCIM isconnected.


Measure:


Negative Lead

C2402A-3

C2402A-2

While measuring the resistance, disconnect the following components one at a time, in order.Stop disconnecting components if the measured resistance rises above 200 ohms.

In-vehicle temperature and humidity sensor C2247

Air distribution door actuator C236

Air inlet door actuator C289

Driver side temperature door actuator C2091

Passenger side temperature door actuator C2092

Did the resistance rise above 200 ohms?

Feedback



Q5 CHECK THE REFERENCE VOLTAGE CIRCUIT FOR A SHORT TO VOLTAGE


No GO toQ6

Ignition OFF.


Measure:


Negative Lead

C2402A-3

Ground


Q6 CHECK FOR CORRECT FCIM (FRONT CONTROLS INTERFACE MODULE) OPERATION

Yes


No


Ignition OFF.


Repair:



Feedback








P193E



The PCM controls the A/C compressor clutch field coil based on messages received from the BCMover the HS-CAN . When the FCIM determines it is necessary to activate the A/C compressor due todriver request or automatic climate control settings, the FCIM sends a message to the BCM over theMS-CAN , the BCM then sends a message to the PCM to activate the A/C compressor.

An internal failure of the PCM , BCM or FCIM , or a failure in the MS-CAN or HS-CAN , causes thePCM to set a DTC .



P193EA/C Clutch RequestSignal

This DTC sets when the PCM does not receive the A/C enablerequest from the BCM .

Possible Sources

Network concerns

BCM

PCM

FCIM

PINPOINT TEST R : P193E

R1 VERIFY THE CUSTOMER CONCERN

Yes GO toR2

Feedback




No The system is operating correctly at this time. TheDTC may have been set due to high networktraffic or an intermittent fault condition.

Ignition ON.

Verify there is an observable symptom present.

Is an observable symptom present?

R2 CHECK THE COMMUNICATION NETWORK

Yes GO toR3

No

DIAGNOSE the BCM , PCM or FCIM does notcommunicate with the diagnostic scan tool.

REFER to: Communications Network(418-00Module Communications Network, Diagnosis andTesting).

Using a diagnostic scan tool, carry out the Network Test.

Do the BCM , PCM and the FCIM pass the Network Test?

R3 CHECK THE PCM (POWERTRAIN CONTROL MODULE) A/C (AIR CONDITIONING) REQUESTSIGNAL (AC_REQ) PID (PARAMETER IDENTIFICATION)

Yes GO toR7

No GO toR4

Start the engine.

Using a diagnostic scan tool, monitor the PCM AC_REQ PID .

On the HVAC controls, select PANEL mode, then press the A/C button (indicator ON).

Does the AC_REQ PID display YES or On when the A/C button indicator is illuminated?

Feedback







R4 CHECK THE FCIM (FRONT CONTROLS INTERFACE MODULE) A/C (AIR CONDITIONING)SWITCH (CC_SW_AC) PID (PARAMETER IDENTIFICATION)

Yes GO toR6

No GO toR5

Using a diagnostic scan tool, monitor the FCIM CC_SW_AC PID while pressing and releasingthe A/C button.

Does the PID display Active or On when the A/C button indicator is illuminated?

R5 CHECK FOR CORRECT FCIM (FRONT CONTROLS INTERFACE MODULE) OPERATION

Yes


No


Ignition OFF.


Repair:







Feedback





R6 VERIFY CORRECT BCM (BODY CONTROL MODULE) OPERATION

Yes

CHECK OASIS for any applicable TechnicalService Bulletins (TSBs). If a TSB exists for thisconcern, DISCONTINUE this test and FOLLOWthe TSB instructions. If no Technical ServiceBulletins (TSBs) address this concern, GuidedRoutine available in the on-line WorkshopManual.

No


Ignition OFF.

Disconnect and inspect all BCM electrical connectors.

Repair:




Reconnect all BCM electrical connectors. Make sure they seat and latch correctly.



R7 VERIFY CORRECT PCM (POWERTRAIN CONTROL MODULE) OPERATION Feedback



Yes





No


Ignition OFF.

Disconnect and inspect all PCM electrical connectors.

Repair:




Reconnect all PCM electrical connectors. Make sure they seat and latch correctly.



B1474:11, B1474:15, B147A:11, B147A:15, B147B:11, B147B:15

Feedback








Electric Booster Heater ,

REFER to: Supplemental Climate Control - System Operation and Component Description(412-03Supplemental Climate Control, Description and Operation).



B1474:11Heater Relay 1:Circuit Short ToGround

This DTC sets when the control module senses lower than expectedvoltage on the PTC heater relay control circuit, indicating a short toground.

B1474:15Heater Relay 1:Circuit Short ToBattery or Open

This DTC sets when the control module senses higher than expectedvoltage on the PTC heater relay control circuit, indicating a short tovoltage or an open circuit or sensor.

B147A:11Heater Relay 2:Circuit Short ToGround


B147A:15Heater Relay 2:Circuit Short ToBattery or Open


B147B:11Heater Relay 3:Circuit Short ToGround


B147B:15Heater Relay 3:Circuit Short ToBattery or Open


Possible Sources


Electric booster heater relays

FCIM


VERIFY BJB fuses 46 (50A), 47 (50A) and 53 (50A) are OK.

PINPOINT TEST S : B1474:11, B1474:15, B147A:11, B147A:15, B147B:11, B147B:15

Feedback




S1 CHECK THE ELECTRIC BOOSTER HEATER RELAYS

Yes GO toS2

No INSTALL anew relay.

Ignition OFF.

Disconnect Electric booster heater relay 1.



Carry out the component test on the electric booster heater relays. Refer to Wiring DiagramsCell 149 for schematic and connector information.


S2 CHECK THE ELECTRIC BOOSTER HEATER RELAY CONTROL CIRCUITS FOR A SHORT TOVOLTAGE


No GO toS3



Ignition ON.

Measure:

With multifunction display

Feedback







Negative Lead

C2402B-7

Ground

C2402B-8

Ground

C2402B-9

Ground

Without multifunction display


Negative Lead

C2402A-15

Ground

C2402A-16

Ground

C2402A-17

Ground


S3 CHECK THE ELECTRIC BOOSTER HEATER RELAY CONTROL CIRCUITS FOR A SHORT TOGROUND

Yes GO toS4


Ignition OFF.

Measure:


Feedback





Negative Lead

C2402B-7

Ground

C2402B-8

Ground

C2402B-9

Ground



Negative Lead

C2402A-15

Ground

C2402A-16

Ground

C2402A-17

Ground


S4 CHECK THE ELECTRIC BOOSTER HEATER RELAY CONTROL CIRCUITS FOR AN OPEN

Yes GO toS5


Measure:



Feedback





C2402B-7

R20 Electric booster heaterrelay 1 socket 1



C2402B-8




C2402B-9



Feedback




C2402A-17




C2402A-16




C2402A-15


Feedback




S5 CHECK THE ELECTRIC BOOSTER HEATER RELAY GROUND CIRCUITS FOR AN OPEN

Yes GO toS6


Measure:



Ground



Ground

Positive Lead Measurement / Action Negative LeadFeedback






Ground


S6 CHECK THE ELECTRIC BOOSTER HEATER CIRCUITS FOR A SHORT TO VOLTAGE


No GO toS7

Disconnect Electric booster heater C2603 .

Ignition ON.

Measure:


Negative Lead

C2603-1

Ground

C2603-3

Ground

C2603-5

Ground


S7 CHECK THE ELECTRIC BOOSTER HEATER CIRCUITS FOR A SHORT TO GROUND

Feedback




Yes GO toS8


Ignition OFF.

Measure:


Negative Lead

C2603-1

Ground

C2603-3

Ground

C2603-5

Ground


S8 CHECK THE ELECTRIC BOOSTER HEATER CIRCUITS FOR AN OPEN

Yes

INSTALL a new electric booster heater.

REFER to: Electric Booster Heater(412-03Supplemental Climate Control, Removal andInstallation).

TEST the system for normal operation. If theconcern is still present, GO to S9


Measure:


Feedback







C2603-1


C2603-3


C2603-5



Negative Lead

C2603-2

Ground

C2603-4

Ground


Feedback



S9 CHECK FOR CORRECT FCIM (FRONT CONTROLS INTERFACE MODULE) OPERATION

Yes


No


Ignition OFF.


Repair:







Copyright © Ford Motor Company

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(datc) dual automatic temperature control climate control

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