brc

BRC-1

BRAKE CONTROL SYSTEM

F BRAKES

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Revision: November 2004 2005 Frontier

ABSPRECAUTIONS .......................................................... 4

Precautions for Supplemental Restraint System(SRS) AIR BAG and SEAT BELT PRE-TEN-SIONER .................................................................. 4Precautions for Brake System .................................. 4Precautions When Using CONSULT-II ..................... 4

CHECK POINTS FOR USING CONSULT-II ......... 4Precautions for Brake Control .................................. 5Precautions for CAN System ................................... 5Wiring Diagrams and Trouble Diagnosis .................. 6

PREPARATION ........................................................... 7Special Service Tool ................................................. 7Commercial Service Tools ........................................ 7

SYSTEM DESCRIPTION ............................................ 8System Components ................................................ 8ABS Function ........................................................... 8EBD Function ........................................................... 8Fail-Safe Function .................................................... 8

ABS/EBD SYSTEM ............................................... 8Hydraulic Circuit Diagram ........................................ 9

CAN COMMUNICATION .......................................... 10System Description ................................................ 10

TROUBLE DIAGNOSIS .............................................11How to Perform Trouble Diagnoses for Quick andAccurate Repair ......................................................11

INTRODUCTION ..................................................11WORK FLOW ...................................................... 12CLARIFY CONCERN .......................................... 13EXAMPLE OF DIAGNOSIS SHEET ................... 13

ComponentPartsandHarnessConnectorLocation... 14Schematic .............................................................. 15Wiring Diagram ABS ..................................... 16Basic Inspection ..................................................... 20

BRAKE FLUID LEVEL, FLUID LEAK, ANDBRAKE PAD INSPECTION ................................. 20POWER SYSTEM TERMINAL LOOSENESSAND BATTERY INSPECTION ............................ 20ABS WARNING LAMP INSPECTION ................. 20

Warning Lamp and Indicator Timing ...................... 21

Control Unit Input/Output Signal Standard ............. 21REFERENCE VALUE FROM CONSULT-II ......... 21

CONSULT-II Function (ABS) .................................. 23CONSULT-IIBASICOPERATIONPROCEDURE

... 23SELF-DIAGNOSIS .............................................. 24DATA MONITOR ................................................. 26ACTIVE TEST ..................................................... 27

TROUBLE DIAGNOSIS FOR SELF-DIAGNOSTICITEMS ........................................................................ 29

Wheel Sensor System ............................................ 29ABS Control Unit Inspection ................................... 30Solenoid Valve System Inspection ......................... 31ActuatorMotor, MotorRelay, and Circuit Inspection... 32ABS Control Unit Power and Ground SystemsInspection ............................................................... 33CAN Communication System Inspection ................ 33

TROUBLE DIAGNOSES FOR SYMPTOMS ............ 34ABS Works Frequently ........................................... 34Unexpected Pedal Action ....................................... 35Long Stopping Distance .......................................... 36ABS Does Not Work ............................................... 36Pedal Vibration or ABS Operation Noise ................ 36ABS Warning Lamp Does Not Come On When Igni-tion Switch Is Turned On ........................................ 37ABS Warning Lamp StaysOn When Ignition SwitchIs Turned On ........................................................... 37

WHEEL SENSORS ................................................... 38Removal and Installation ........................................ 38

REMOVAL ........................................................... 38INSTALLATION ................................................... 38

SENSOR ROTOR ..................................................... 39Removal and Installation ........................................ 39

FRONT ................................................................ 39REAR (C200) ...................................................... 39REAR (M226) ...................................................... 39

ACTUATOR AND ELECTRIC UNIT (ASSEMBLY)... 40Removal and Installation ........................................ 40

REMOVAL ........................................................... 40INSTALLATION ................................................... 41

BRC-2Revision: November 2004 2005 Frontier

ABLS/ABSPRECAUTIONS ......................................................... 42

Precautions for Supplemental Restraint System(SRS) AIR BAG and SEAT BELT PRE-TEN-SIONER ................................................................. 42Precautions for Brake System ................................ 42Precautions When Using CONSULT-II ................... 42

CHECK POINTS FOR USING CONSULT-II ........ 42Precautions for Brake Control ................................ 43Precautions for CAN System .................................. 43Wiring Diagrams and Trouble Diagnosis ................ 44

PREPARATION ......................................................... 45Special Service Tool ............................................... 45Commercial Service Tools ...................................... 45

SYSTEM DESCRIPTION .......................................... 46System Components .............................................. 46ABS Function .......................................................... 47EBD Function ......................................................... 47ABLS Function ........................................................ 47Fail-Safe Function .................................................. 47

ABS/EBD SYSTEM ............................................. 47ABLS SYSTEM .................................................... 47

Hydraulic Circuit Diagram ....................................... 48CAN COMMUNICATION ........................................... 49

System Description ................................................. 49TROUBLE DIAGNOSIS ............................................ 50

How to Perform Trouble Diagnoses for Quick andAccurate Repair ...................................................... 50

INTRODUCTION ................................................. 50WORK FLOW ...................................................... 51CLARIFY CONCERN .......................................... 52EXAMPLE OF DIAGNOSIS SHEET .................... 52

ComponentPartsandHarnessConnectorLocation... 53Schematic ............................................................... 54Wiring Diagram ABLS ................................... 55Basic Inspection ..................................................... 59

BRAKE FLUID LEVEL, FLUID LEAK, ANDBRAKE PAD INSPECTION ................................. 59POWER SYSTEM TERMINAL LOOSENESSAND BATTERY INSPECTION ............................. 59ABS WARNING LAMP AND SLIP INDICATORLAMP INSPECTION ............................................ 59

Warning Lamp and Indicator Timing ....................... 60Control Unit Input/Output Signal Standard .............. 60

REFERENCE VALUE FROM CONSULT-II ......... 60CONSULT-II Function (ABS) .................................. 63

CONSULT-IIBASICOPERATIONPROCEDURE... 63

SELF-DIAGNOSIS .............................................. 64DATA MONITOR .................................................. 67ACTIVE TEST ..................................................... 69

TROUBLE DIAGNOSIS FOR SELF-DIAGNOSTICITEMS ........................................................................ 71

Wheel Sensor System Inspection ........................... 71Engine System Inspection ...................................... 72ABS/ABLS Control Unit Inspection ......................... 73Solenoid and Change-Over Valve System Inspec-tion .......................................................................... 73

ActuatorMotor, Motor Relay, and Circuit Inspection...74Stop Lamp Switch System Inspection .....................75ABS/ABLS Control Unit Power and Ground Sys-tems Inspection .......................................................76Brake Fluid Level Switch System Inspection ..........77Pressure Sensor System Inspection .......................78CAN Communication System Inspection ................79

TROUBLE DIAGNOSES FOR SYMPTOMS .............80ABS Works Frequently ............................................80Unexpected Pedal Action ........................................81Long Stopping Distance ..........................................82ABS Does Not Work ...............................................82Pedal Vibration or ABS Operation Noise ................82ABS Warning Lamp Does Not Come On When Igni-tion Switch Is Turned On .........................................83ABS Warning Lamp Stays On When Ignition SwitchIs Turned On ...........................................................83

WHEEL SENSORS ...................................................84Removal and Installation .........................................84

REMOVAL ............................................................84INSTALLATION ....................................................84

SENSOR ROTOR ......................................................85Removal and Installation .........................................85

FRONT .................................................................85REAR (C200) .......................................................85REAR (M226) .......................................................85

ACTUATOR AND ELECTRIC UNIT (ASSEMBLY) ...86Removal and Installation .........................................86

REMOVAL ............................................................86INSTALLATION ....................................................87

HDC/HSA/VDC/TCS/ABSPRECAUTIONS .........................................................88

Precautions for Supplemental Restraint System(SRS) AIR BAG and SEAT BELT PRE-TEN-SIONER .................................................................88Precautions for Brake System ................................88Precautions When Using CONSULT-II ...................88

CHECK POINTS FOR USING CONSULT-II ........88Precautions for Brake Control .................................89Precautions for CAN System ..................................90Wiring Diagrams and Trouble Diagnosis .................90

PREPARATION .........................................................91Special Service Tool ................................................91Commercial Service Tools ......................................91

SYSTEM DESCRIPTION ...........................................92System Components ...............................................92ABS Function ..........................................................93EBD Function ..........................................................93TCS Function ..........................................................93VDC Function ..........................................................93HDC Function .........................................................93HSA Function ..........................................................94Fail-Safe Function ...................................................94

ABS/EBD SYSTEM ..............................................94HDC/HSA SYSTEM .............................................94VDC/TCS SYSTEM .............................................94

Hydraulic Circuit Diagram .......................................95

BRC-3

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CAN COMMUNICATION .......................................... 96System Description ................................................ 96

TROUBLE DIAGNOSIS ............................................ 97How to Perform Trouble Diagnoses for Quick andAccurate Repair ..................................................... 97

INTRODUCTION ................................................. 97WORK FLOW ...................................................... 98CLARIFY CONCERN .......................................... 99EXAMPLE OF DIAGNOSIS SHEET ................... 99

ComponentPartsandHarnessConnectorLocation. 100Schematic ............................................................ 101Wiring Diagram VDC ................................... 102Basic Inspection ................................................... 109

BRAKE FLUID LEVEL, FLUID LEAK, ANDBRAKE PAD INSPECTION ............................... 109POWER SYSTEM TERMINAL LOOSENESSAND BATTERY INSPECTION .......................... 109ABS WARNING LAMP, SLIP INDICATOR LAMP,VDC OFF INDICATOR LAMP AND HDC INDI-CATOR LAMP INSPECTION ............................ 109

For Fast and Accurate Diagnosis ..........................110PRECAUTIONS FOR DIAGNOSIS ....................110

Warning Lamp and Indicator Timing ..................... 111Control Unit Input/Output Signal Standard ............ 111

REFERENCE VALUE FROM CONSULT-II ........ 111CONSULT-II Function (ABS) .................................115

CONSULT-IIBASICOPERATIONPROCEDURE..115

SELF-DIAGNOSIS .............................................116DATA MONITOR ................................................119ACTIVE TEST ................................................... 122

TROUBLE DIAGNOSIS FOR SELF-DIAGNOSTICITEMS ..................................................................... 125

Wheel Sensor System Inspection ........................ 125Engine System Inspection .................................... 126ABS/TCS/VDC Control Unit Inspection ................ 127Steering Angle Sensor System ............................ 127Yaw Rate/Side/Decel G Sensor System Inspection. 129Solenoid and VDC Change-Over Valve SystemInspection ............................................................. 131Actuator Motor, Motor Relay, and Circuit Inspection. 132Stop Lamp Switch System Inspection .................. 133ABS/TCS/VDC Control Unit Power and GroundSystems Inspection .............................................. 134Brake Fluid Level Switch System Inspection ....... 135Active Booster System Inspection ........................ 136Pressure Sensor System Inspection .................... 137Steering Angle Sensor Safe Mode Inspection ...... 140

CAN Communication System Inspection .............. 140Inspection For Self-diagnosis Result "ST ANGLESEN SIGNAL" ....................................................... 141Inspection For Self-diagnosis Result "DECEL GSEN SET" ............................................................. 141VDC OFF Indicator Lamp Does Not Illuminate ..... 141Component Inspection .......................................... 142

VDC OFF SWITCH ........................................... 142HDC SWITCH ................................................... 142

TROUBLE DIAGNOSES FOR SYMPTOMS .......... 143ABS Works Frequently ......................................... 143Unexpected Pedal Action ..................................... 144Long Stopping Distance ........................................ 145ABS Does Not Work ............................................. 145Pedal Vibration or ABS Operation Noise .............. 145ABS Warning Lamp Does Not Come On When Igni-tion Switch Is Turned On ...................................... 146ABS Warning Lamp StaysOn When Ignition SwitchIs Turned On ......................................................... 146Vehicle Jerks During TCS/VDC Activation ........... 147Stop Lamp Relay Inspection ................................. 148HDC Switch Inspection ......................................... 148

ON-VEHICLE SERVICE .......................................... 150Adjustment of Steering Angle Sensor Neutral Posi-tion ........................................................................ 150

WITH CONSULT-II ............................................ 150WITHOUT CONSULT-II ..................................... 150

Calibration of Yaw Rate/Side/Decel G Sensor ..... 150WHEEL SENSORS ................................................. 152

Removal and Installation ...................................... 152REMOVAL ......................................................... 152INSTALLATION ................................................. 152

SENSOR ROTOR ................................................... 153Removal and Installation ...................................... 153

FRONT .............................................................. 153REAR (C200) .................................................... 153REAR (M226) .................................................... 153

ACTUATOR AND ELECTRIC UNIT (ASSEMBLY). 154Removal and Installation ...................................... 154

REMOVAL ......................................................... 154INSTALLATION ................................................. 155

STEERING ANGLE SENSOR ................................ 156Removal and Installation ...................................... 156

G SENSOR .............................................................. 157Removal and Installation ...................................... 157

REMOVAL ......................................................... 157INSTALLATION ................................................. 157

BRC-4

[ABS]PRECAUTIONS


PRECAUTIONS PFP:00001Precautions for Supplemental Restraint System (SRS) AIR BAG and SEATBELT PRE-TENSIONER EFS0059JThe Supplemental Restraint System such as AIR BAG and SEAT BELT PRE-TENSIONER, used alongwith a front seat belt, helps to reduce the risk or severity of injury to the driver and front passenger for certaintypes of collision. Information necessary to service the system safely is included in the SRS and SB section ofthis Service Manual.WARNING: To avoid rendering the SRS inoperative, which could increase the risk of personal injury or death

in the event of a collision which would result in air bag inflation, all maintenance must be per-formed by an authorized NISSAN/INFINITI dealer.

Improper maintenance, including incorrect removal and installation of the SRS, can lead to per-sonal injury caused by unintentional activation of the system. For removal of Spiral Cable and AirBag Module, see the SRS section.

Do not use electrical test equipment on any circuit related to the SRS unless instructed to in thisService Manual. SRS wiring harnesses can be identified by yellow and/or orange harnesses orharness connectors.

Precautions for Brake System EFS0059KCAUTION: Refer to MA-11, "RECOMMENDED FLUIDS AND LUBRICANTS" for recommended brake fluid. Never reuse drained brake fluid. Be careful not to splash brake fluid on painted areas; it may cause paint damage. If brake fluid is

splashed on painted areas, wash it away with water immediately. To clean or wash all parts of master cylinder and disc brake caliper, use clean brake fluid. Never use mineral oils such as gasoline or kerosene. They will ruin rubber parts of the hydraulic

system. Use flare nut wrench when removing and installing brake

tube. If a brake fluid leak is found, the part must be disassembled

without fail. Then it has to be replaced with a new one if adefect exists.

Turn the ignition switch OFF and remove the connector ofthe ABS actuator and electric unit (control unit) or the bat-tery terminal before performing the work.

Always torque brake lines when installing. Burnish the brake contact surfaces after refinishing or

replacing rotors, after replacing pads, or if a soft pedaloccurs at very low mileage.Refer to BR-26, "BRAKE BURNISHING PROCEDURE" (front disc brake) or BR-32, "BRAKE BUR-NISHING PROCEDURE" (rear disc brake).

WARNING: Clean brake pads and shoes with a waste cloth, then wipe with a dust collector.Precautions When Using CONSULT-II EFS0059LWhen connecting CONSULT-II to data link connector, connect them through CONSULT-II CONVERTER.CAUTION:If CONSULT-II is used with no connection of CONSULT-II CONVERTER, malfunctions might bedetected in self-diagnosis depending on control unit which carries out CAN communication.CHECK POINTS FOR USING CONSULT-II1. Has CONSULT-II been used without connecting CONSULT-II CONVERTER on this vehicle?

If YES, GO TO 2. If NO, GO TO 5.

SBR686C

PRECAUTIONS

BRC-5

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2. Is there any indication other than indications relating to CAN communication system in the self-diagnosisresults? If YES, GO TO 3. If NO, GO TO 4.

3. Based on self-diagnosis results unrelated to CAN communication, carry out the inspection.4. Malfunctions may be detected in self-diagnosis depending on control units carrying out CAN communica-

tion. Therefor, erase the self-diagnosis results.5. Diagnose CAN communication system. Refer to LAN-22, "CAN COMMUNICATION" .Precautions for Brake Control EFS0059M During ABS operation, the brake pedal may vibrate lightly and a mechanical noise may be heard. This is

normal. Just after starting vehicle, the brake pedal may vibrate or a motor operating noise may be heard from

engine compartment. This is a normal status of operation check. Stopping distance may be longer than that of vehicles without ABS when vehicle drives on rough, gravel,

or snow-covered (fresh, deep snow) roads. When an error is indicated by ABS or another warning lamp, collect all necessary information from cus-

tomer (what symptoms are present under what conditions) and check for simple causes before startingdiagnosis. Besides electrical system inspection, check brake booster operation, brake fluid level, and fluidleaks.

If incorrect tire sizes or types are installed on the vehicle or brake pads are not Genuine NISSAN parts,stopping distance or steering stability may deteriorate.

If there is a radio, antenna or related wiring near control module, ABS function may have a malfunction orerror.

If aftermarket parts (car stereo, CD player, etc.) have been installed, check for incidents such as harnesspinches, open circuits or improper wiring.

Precautions for CAN System EFS0059N Do not apply voltage of 7.0V or higher to terminal to be measured. Maximum open terminal voltage of tester in use must be less than 7.0V. Before checking harnesses, turn ignition switch OFF and disconnect battery negative cable. Area to be repaired must be soldered and wrapped with tape.

Make sure that fraying of twisted wire is within 110 mm (4.33 in).

Do not make a bypass connection to repaired area. (If the circuitis bypassed, characteristics of twisted wire will be lost.)

PKIA0306E

PKIA0307E

BRC-6

[ABS]PRECAUTIONS


Wiring Diagrams and Trouble Diagnosis EFS0059OWhen you read wiring diagrams, refer to the following: GI-15, "How to Read Wiring Diagrams". PG-4, "POWER SUPPLY ROUTING CIRCUIT".When you perform trouble diagnosis, refer to the following: GI-11, "HOW TO FOLLOW TEST GROUPS IN TROUBLE DIAGNOSES". GI-27, "How to Perform Efficient Diagnosis for an Electrical Incident".

PREPARATION

BRC-7

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PREPARATION PFP:00002Special Service Tool EFS0051TThe actual shapes of Kent-Moore tools may differ from those of special service tools illustrated here.

Commercial Service Tools EFS0051U

Tool number(Kent-Moore No.)Tool name

Description

(J-45741)ABS active wheel sensor tester

Checking operation of ABS active wheelsensors

205-D002( )Bearing splitter

Removing axle shaft bearingWFIA0101E

ZZA0700D

Tool name Description1. Flare nut crowfoot2. Torque wrench

Removing and installing brake pipinga: 10mm (0.39 in)/12mm (0.47 in)

S-NT360

BRC-8

[ABS]SYSTEM DESCRIPTION


SYSTEM DESCRIPTION PFP:00000System Components EFS0051V

ABS Function EFS0051W The Anti-Lock Brake System detects wheel revolution while braking and improves handling stability during

sudden braking by electrically preventing wheel lockup. Maneuverability is also improved for avoidingobstacles.

If the electrical system malfunctions, the Fail-Safe function is activated, the ABS becomes inoperative andthe ABS warning lamp turns on.

The electrical system can be diagnosed using CONSULT-II. During ABS operation, the brake pedal may vibrate lightly and a mechanical noise may be heard. This is

normal. Just after starting the vehicle, the brake pedal may vibrate or a motor operating noise may be heard from


or snow-covered (fresh, deep snow) roads.EBD Function EFS0051X Electronic Brake Distribution is a function that detects subtle slippages between the front and rear wheels

during braking, and it improves handling stability by electronically controlling the brake fluid pressurewhich results in reduced rear wheel slippage.

If the electrical system malfunctions, the Fail-Safe function is activated, the EBD and ABS become inoper-ative, and the ABS warning lamp and brake warning lamp are turned on.

The electrical system can be diagnosed using CONSULT-II. During EBD operation, the brake pedal may vibrate lightly and a mechanical noise may be heard. This is


engine compartment. This is a normal status of operation check.Fail-Safe Function EFS0051YCAUTION:If the Fail-Safe function is activated, perform the Self Diagnosis for ABS system.ABS/EBD SYSTEMIn case of an electrical malfunction with the ABS, the ABS warning lamp will turn on. In case of an electricalmalfunction with the EBD system, the brake warning lamp and the ABS warning lamp will turn on.The system will revert to one of the following conditions of the Fail-Safe function.

WFIA0360E

SYSTEM DESCRIPTION

BRC-9

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1. For ABS malfunction, only the EBD is operative and the condition of the vehicle is the same condition ofvehicles without ABS system.

2. For EBD malfunction, the EBD and ABS become inoperative, and the condition of the vehicle is the sameas the condition of vehicles without ABS or EBD system.

Hydraulic Circuit Diagram EFS0051Z

WFIA0369E

1. Inlet solenoid valve 2. Outlet solenoid valve 3. Reservoir4. Pump 5. Motor 6. Inlet valve7. Outlet valve 8. Bypass check valve 9. Damper10. Pressure switch

BRC-10

[ABS]CAN COMMUNICATION


CAN COMMUNICATION PFP:23710System Description EFS00520Refer to LAN-22, "CAN COMMUNICATION" .

TROUBLE DIAGNOSIS

BRC-11

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TROUBLE DIAGNOSIS PFP:00000How to Perform Trouble Diagnoses for Quick and Accurate Repair EFS00521INTRODUCTIONThe ABS system has an electronic control unit to control major func-tions. The control unit accepts input signals from sensors and con-trols actuator operation. It is also important to check for air leaks inthe booster or lines, lack of brake fluid, or other malfunctions in thebrake system.It is much more difficult to diagnose a malfunction that occurs inter-mittently rather than continuously. Most intermittent conditions arecaused by poor electrical connections or damaged wiring. In thiscase, careful checking of suspicious circuits may help prevent thereplacement of good parts.A visual check only may not find the cause of the malfunction, so aroad test should be performed.Before undertaking actual checks, take just a few minutes to talk witha customer who approaches with an ABS complaint. The customeris a very good source of information, especially for intermittent condi-tions. Through the talks with the customer, find out what symptomsare present and under what conditions they occur.Start your diagnosis by looking for conventional malfunctions first.This is one of the best ways to troubleshoot brake malfunctions onan ABS equipped vehicle. Also check related Service Bulletins forinformation.

SEF233G

SEF234G

BRC-12

[ABS]TROUBLE DIAGNOSIS


WORK FLOW

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TROUBLE DIAGNOSIS

BRC-13

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CLARIFY CONCERN A customer's description of a vehicle concern may vary depend-

ing on the individual. It is important to clarify the customer's con-cern.

Ask the customer about what symptoms are present under whatconditions. Use this information to reproduce the symptom whiledriving.

It is also important to use the diagnosis sheet to understandwhat type of symptoms the customer is experiencing.

EXAMPLE OF DIAGNOSIS SHEETSBR339B

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BRC-14



Component Parts and Harness Connector Location EFS00522

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TROUBLE DIAGNOSIS

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Schematic EFS00523

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BRC-16



Wiring Diagram ABS EFS00524

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TROUBLE DIAGNOSIS

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WFWA0166E

BRC-18



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TROUBLE DIAGNOSIS

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BRC-20



Basic Inspection EFS00525BRAKE FLUID LEVEL, FLUID LEAK, AND BRAKE PAD INSPECTION1. Check fluid level in the brake fluid reservoir. If fluid level is low, add fluid.2. Check the brake piping and around the ABS actuator and electric unit (control unit) for leaks. If there is

leaking or seeping fluid, check the following items. If ABS actuator and electric unit (control unit) connection is loose, tighten the piping to the specified

torque and recheck for leaks. If there is damage to the connection flare nut or ABS actuator and electric unit (control unit) threads,

replace the damaged part and recheck for leaks. When there is fluid leaking or seeping from a fluid connection, use a clean cloth to wipe off the fluid and

recheck for leaks. If fluid is still seeping out, replace the damaged part. If the fluid is leaking at the ABSactuator and electric unit (control unit), replace the ABS actuator and electric unit (control unit) assem-bly.CAUTION:The ABS actuator and electric unit (control unit) cannot be disassembled and must be replacedas an assembly.

3. Check the brake pads for excessive wear.POWER SYSTEM TERMINAL LOOSENESS AND BATTERY INSPECTIONMake sure the battery positive cable, negative cable and ground connection are not loose. In addition, makesure the battery is sufficiently charged.ABS WARNING LAMP INSPECTION1. Make sure ABS warning lamp turns on for approximately 2 seconds when the ignition switch is turned ON.

If it does not, check CAN communications. If there are no errors with the CAN communication system,check the combination meter. Refer to DI-5, "COMBINATION METERS" .

2. Make sure the lamp turns off approximately 2 seconds after the ignition switch is turned ON. If the lampdoes not turn off, conduct self-diagnosis.

3. Make sure ABS warning lamp turns off approximately 2 seconds after the engine is started. If ABS warn-ing lamp has not turned off 10 seconds after the engine has been started, conduct self-diagnosis of theABS actuator and electric unit (control unit).

4. After conducting the self-diagnosis, be sure to erase the error memory. Refer to BRC-23, "CONSULT-IIFunction (ABS)" .

TROUBLE DIAGNOSIS

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Warning Lamp and Indicator Timing EFS00526

X: ON: OFF

Control Unit Input/Output Signal Standard EFS00527REFERENCE VALUE FROM CONSULT-IICAUTION:The display shows the control unit calculation data, so a normal value might be displayed even in theevent the output circuit (harness) is open or short circuited.

Condition ABSwarning lamp Remarks

When the ignition switch is OFF After the ignition switch is turned ON for approx. 1 sec-ond

After the ignition switch is turned ON for approx. 2 sec-onds

Lamp goes off approx. 2 seconds after theengine is started.

ABS malfunction

When the ABS actuator and electric unit (con-trol unit) is malfunctioning (power supply orground malfunction).

Monitor item Display contentData monitor

Note: Error inspectionchecklistCondition Reference value in

normal operation

FR RH SENSORFR LH SENSORRR RH SENSORRR LH SENSOR

Wheel speed

Vehicle stopped 0 [km/h (MPH)]BRC-29, "Wheel SensorSystem"Vehicle running (Note 1)

Almost in accor-dance with speed-ometer display(within 10%)

BATTERY VOLTBattery voltage sup-plied to ABS actuatorand electric unit (con-trol unit)

Ignition switch ON 10 to 16VBRC-33, "ABS ControlUnit Power and GroundSystems Inspection"

CRANKING SIG Cranking statusCranking ON

Not cranking OFF

STOP LAMP SW Stop lamp switch oper-ation

Brake pedal depressed ON

Brake pedal not depressed OFF

ABS WARN LAMP ABS warning lamp ONcondition (Note 2)

ABS warning lamp ON ON BRC-37, "ABS WarningLamp Does Not ComeOn When Ignition SwitchIs Turned On"

ABS warning lamp OFF OFF

EBD WARN LAMP EBD warning lamp sta-tusWhen EBD warning lamp is on ON BRC-33, "CAN Commu-

nication System Inspec-tion"When EBD warning lamp is off OFF

MOTOR RELAY Operation status ofmotor and motor relay

Ignition switch ON or running(ABS not activated) OFF BRC-32, "Actuator Motor,

Motor Relay, and CircuitInspection"Ignition switch ON or engine

running (ABS activated) ON

ACTUATOR RLY Actuator relay opera-tion status

Vehicle stopped (Ignitionswitch ON) OFF BRC-32, "Actuator Motor,

Motor Relay, and CircuitInspection"Vehicle stopped (Engine run-

ning) ON

BRC-22



Note 1: Confirm tire pressure is normal.Note 2: ON/OFF timing of ABS warning lampON: For approximately 2 seconds after ignition switch is turned ON, or when a malfunction is detected.OFF: Approximately 2 seconds after ignition switch is turned ON (when system is in normal operation).

FR LH IN SOLFR LH OUT SOLFR RH IN SOLFR RH OUT SOLREAR IN SOLREAR OUT SOL

Solenoid valve opera-tion

Actuator (solenoid) is active(ACTIVE TEST with CON-SULT-II) or actuator relay isinactive (in fail-safe mode).

ONBRC-31, "Solenoid ValveSystem Inspection"

When actuator (solenoid) isnot active and actuator relay isactive (ignition switch ON).

OFF

ABS SIGNALEBD SIGNAL Signal status

ABS activeEBD active ON ABS system

EBD systemABS not activeEBD not active OFF

ABS FAIL SIGEBD FAIL SIG Fail signal status

ABS failEBD fail ON ABS system

EBD systemABS normalEBD normal OFF

Monitor item Display contentData monitor

Note: Error inspectionchecklistCondition Reference value in

normal operation

TROUBLE DIAGNOSIS

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CONSULT-II Function (ABS) EFS00528CONSULT-II can display each diagnostic item using the diagnostic test modes shown following.

CONSULT-II BASIC OPERATION PROCEDURE1. Turn ignition switch OFF.2. Connect CONSULT-II and CONSULT-II CONVERTER to the

data link connector.CAUTION:If CONSULT-II is used with no connection of CONSULT-IICONVERTER, malfunctions might be detected in self-diag-nosis depending on control unit which carries out CANcommunication.

3. Turn ignition switch ON.

4. Touch START (NISSAN BASED VHCL).

5. Touch ABS in the SELECT SYSTEM screen.If ABS is not indicated, go to GI-38, "CONSULT-II Data LinkConnector (DLC) Circuit" .

ABS diagnostic mode Description

WORK SUPPORTSupports inspection and adjustments. Commands are transmitted to the ABS actuator and electricunit (control unit) for setting the status suitable for required operation, input/output signals arereceived from the ABS actuator and electric unit (control unit) and received data is displayed.

SELF-DIAG RESULTS Displays ABS actuator and electric unit (control unit) self-diagnosis results.DATA MONITOR Displays ABS actuator and electric unit (control unit) input/output data in real time.

CAN DIAG SUPPORT MNTR The result of transmit/receive diagnosis of CAN communication can be read.ACTIVE TEST Operation of electrical loads can be checked by sending drive signal to them.

FUNCTION TEST Conducted by CONSULT-II instead of a technician to determine whether each system is "OK" or"NG".

ECU PART NUMBER ABS actuator and electric unit (control unit) part number can be read.

BBIA0538E

BCIA0029E

BCIA0030E

BRC-24



6. Select the required diagnostic location from the SELECT DIAGMODE screen.For further information, see the CONSULT-II Operation Manual.

SELF-DIAGNOSISDescriptionIf an error is detected in the system, the ABS warning lamp will turn on. In this case, perform self-diagnosis asfollows:Operation Procedure1. Turn ignition switch OFF.2. Connect CONSULT-II and CONSULT-II CONVERTER to the data link connector.

CAUTION:If CONSULT-II is used with no connection of CONSULT-II CONVERTER, malfunctions might bedetected in self-diagnosis depending on control unit which carries out CAN communication.

3. Turn ignition switch ON.4. Start engine and drive at approximately 30 km/h (19 MPH) or more for approximately 1 minute.5. After stopping the vehicle, with the engine running, touch START (NISSAN BASED VHCL), ABS,

SELF-DIAG RESULTS in order on the CONSULT-II screen.CAUTION:If START (NISSAN BASED VHCL) is touched immediately after starting the engine or turning onthe ignition switch, ABS might not be displayed in the SELECT SYSTEM screen. In this case,repeat the operation from step 1.

6. The self-diagnostic results are displayed. (If necessary, the self-diagnostic results can be printed out bytouching PRINT.) When NO DTC IS DETECTED is displayed, check the ABS warning lamp.

7. Conduct the appropriate inspection from the display item list, and repair or replace the malfunctioningcomponent.

8. Start engine and drive at approximately 30 km/h (19 MPH) or more for approximately 1 minute.CAUTION: When a wheel sensor short-circuit is detected, if the vehicle is not driven at 30 km/h (19 MPH)

for at least 1 minute, the ABS warning lamp will not turn off even if the malfunction is repaired.9. Turn ignition switch OFF to prepare for erasing the memory.10. Start the engine and touch START (NISSAN BASED VHCL), ABS, SELF-DIAG RESULTS, ERASE

in order on the CONSULT-II screen to erase the error memory.If ABS is not indicated, go to GI-38, "CONSULT-II Data Link Connector (DLC) Circuit" .CAUTION:If the error memory is not erased, re-conduct the operation from step 5.

11. For the final inspection, drive at approximately 30 km/h (19 MPH) or more for approximately 1 minute andconfirm that the ABS warning lamp is off.

BCIA0031E

TROUBLE DIAGNOSIS

BRC-25

[ABS]

C

D

E

G

H

I

J

K

L

M

A

B

BRC


Display Item ListSelf-diagnostic item Malfunction detecting condition Check system

FR LH SENSOR 1[C1104]

Circuit of front LH wheel sensor is open, shorted or sensor powervoltage is unusual.

BRC-29, "Wheel SensorSystem" (Note 1)

RR RH SENSOR 1[C1101]

Circuit of rear RH wheel sensor is open, shorted or sensor powervoltage is unusual.

FR RH SENSOR 1[C1103]

Circuit of front RH wheel sensor is open, shorted or sensor powervoltage is unusual.

RR LH SENSOR 1[C1102]

Circuit of rear LH wheel sensor is open, shorted or sensor powervoltage is unusual.

FR LH SENSOR 2[C1108]

ABS actuator and electric unit (control unit) cannot identify sen-sor pulses, because of large gap between wheel sensor and sen-sor rotor.

RR RH SENSOR 2[C1105]


FR RH SENSOR 2[C1107]


RR LH SENSOR 2[C1106]


ABS SENSOR[C1115] Wheel sensor input is abnormal.

BATTERY VOLTAGE[ABNORMAL][C1109]

ABS actuator and electric unit (control unit) power voltage is toolow.

BRC-33, "ABS ControlUnit Power and GroundSystems Inspection"

CONTROLLER FAILURE[C1110]

Internal malfunction of ABS actuator and electric unit (controlunit)

BRC-30, "ABS ControlUnit Inspection"

PUMP MOTOR (Note 3)[C1111]

During actuator motor operation with ON, when actuator motorturns OFF or when control line for actuator motor relay is open. BRC-32, "Actuator

Motor, Motor Relay, andCircuit Inspection"During actuator motor operation with OFF, when actuator motor

turns ON or when control line for relay is shorted to ground.G-SENSOR[C1113] G-sensor is malfunctioning.


FR LH IN ABS SOL[C1120]

Circuit of front LH IN ABS solenoid is open or shorted, or controlline is open or shorted to power supply or ground.

BRC-31, "Solenoid ValveSystem Inspection"

FR LH OUT ABS SOL[C1121]

Circuit of front LH OUT ABS solenoid is open or shorted, or con-trol line is open or shorted to power supply or ground.

FR RH IN ABS SOL[C1122]

Circuit of front RH IN ABS solenoid is open or shorted, or controlline is open or shorted to power supply or ground.

FR RH OUT ABS SOL[C1123]

Circuit of front RH OUT ABS solenoid is open or shorted, or con-trol line is open or shorted to power supply or ground.

R-EV[C1190]

Circuit of rear IN ABS solenoid is open or shorted, or control lineis open or shorted to power supply or ground.

R-AV[C1191]

Circuit of rear OUT ABS solenoid is open or shorted, or controlline is open or shorted to power supply or ground.

ACTR RELAY CIRCUIT[C1140] ABS actuator relay or circuit malfunction.

BRC-32, "ActuatorMotor, Motor Relay, andCircuit Inspection"

BRC-26



Note 1. If wheel sensor 2 for each wheel is indicated, check ABS actuator and electric unit (control unit) powersupply voltage in addition to wheel sensor circuit check.Note 2. If multiple malfunctions are detected including CAN communication line [U1000], perform diagnosis forCAN communication line first.Note 3: "ACTUATOR RLY" on the CONSULT-II self-diagnosis results indicates the malfunction of the actuatormotor relay or circuit.DATA MONITOROperation Procedure1. After turning OFF the ignition switch, connect CONSULT-II and the CONSULT-II CONVERTER to the data

link connector.CAUTION:If CONSULT-II is used with no connection of CONSULT-II CONVERTER, malfunctions might bedetected in self-diagnosis depending on control unit which carries out CAN communication.

2. Touch START (NISSAN BASED VHCL), ABS, DATA MONITOR in order on the CONSULT-II screen.If ABS is not indicated, go to GI-38, "CONSULT-II Data Link Connector (DLC) Circuit" .CAUTION:When START (NISSAN BASED VHCL) is touched immediately after starting the engine or turningon the ignition switch, ABS might not be displayed in the SELECT SYSTEM screen. In this case,repeat the operation from step 2.

3. Return to the SELECT MONITOR ITEM screen, and touch ECU INPUT SIGNALS, MAIN SIGNALS orSELECTION FROM MENU. Refer to the following information.

4. When START is touched, the data monitor screen is displayed.Display Item List

ABS VARIANT CODING[C1170] V coding is not malfunctioning.


CAN COMM CIRCUIT[U1000]

CAN communication line is open or shorted. ABS actuator and electric unit (control unit) internal malfunc-

tion Battery voltage for ECM is suddenly interrupted for approxi-

mately 0.5 second or more.

BRC-33, "CAN Commu-nication System Inspec-tion" (Note 2)

Self-diagnostic item Malfunction detecting condition Check system

Item(Unit)

Data monitor item selectionRemarksECU INPUT

SIGNALSMAIN

SIGNALSSELECTIONFROM MENU

FR RH SENSOR(km/h, MPH)

Wheel speed calculated by front RHwheel sensor signal is displayed.

FR LH SENSOR(km/h, MPH)

Wheel speed calculated by front LHwheel sensor signal is displayed.

RR RH SENSOR(km/h, MPH)

Wheel speed calculated by rear RHwheel sensor signal is displayed.

RR LH SENSOR(km/h, MPH)

Wheel speed calculated by rear LHwheel sensor signal is displayed.

BATTERY VOLT(V)

Voltage supplied to ABS actuatorand electric unit (control unit) is dis-played.

STOP LAMP SW(ON/OFF)

Stop lamp switch (ON/OFF) statusis displayed.

ABS WARN LAMP(ON/OFF)

ABS warning lamp (ON/OFF) statusis displayed.

EBD WARN LAMP Brake warning lamp (ON/OFF) sta-tus is displayed.FR LH IN SOL(ON/OFF)

Front LH IN ABS solenoid (ON/OFF) status is displayed.

TROUBLE DIAGNOSIS

BRC-27

[ABS]

C

D

E

G

H

I

J

K

L

M

A

B

BRC


: Applicable: Not applicable

ACTIVE TESTCAUTION: Do not perform active test while driving. Make sure to completely bleed air from the brake system. The ABS and brake warning lamps turn on during the active test.Operation Procedure1. Connect the CONSULT-II and CONSULT-II CONVERTER to the data link connector and start the engine.

CAUTION:If CONSULT-II is used with no connection of CONSULT-II CONVERTER, malfunctions might bedetected in self-diagnosis depending on control unit which carries out CAN communication.

2. Touch START (NISSAN BASED VHCL) on the display screen.3. Touch ABS.

If ABS is not indicated, go to GI-38, "CONSULT-II Data Link Connector (DLC) Circuit" .4. Touch ACTIVE TEST.

FR LH OUT SOL(ON/OFF)

Front LH OUT ABS solenoid (ON/OFF) status is displayed.

FR RH IN SOL(ON/OFF)

Front RH IN ABS solenoid (ON/OFF) status is displayed.

FR RH OUT SOL(ON/OFF)

Front RH OUT ABS solenoid (ON/OFF) status is displayed.

REAR IN SOL(ON/OFF)

Rear IN ABS solenoid (ON/OFF)status is displayed.

REAR OUT SOL(ON/OFF)

Rear OUT ABS solenoid (ON/OFF)status is displayed.

MOTOR RELAY(ON/OFF)

ABS motor relay signal (ON/OFF)status is displayed.

ACTUATOR RLY(ON/OFF)

ABS actuator relay signal (ON/OFF) status is displayed.

ABS FAIL SIG(ON/OFF)

ABS fail signal (ON/OFF) status isdisplayed.

EBD FAIL SIG(ON/OFF)

EBD fail signal (ON/OFF) status isdisplayed.

EBD SIGNAL(ON/OFF)

EBD operation (ON/OFF) status isdisplayed.

ABS SIGNAL(ON/OFF)

ABS operation (ON/OFF) status isdisplayed.

CRANKING SIG The input state of the key SWSTART position signal is displayed.

Item(Unit)

Data monitor item selectionRemarksECU INPUT

SIGNALSMAIN

SIGNALSSELECTIONFROM MENU

BRC-28



5. The SELECT TEST ITEM screen is displayed.6. Touch necessary test item.

7. With the MAIN SIGNALS display selected, touch START.8. The Active Test screen will be displayed, so conduct the following test.Solenoid Valve Operation Chart

*: ON for 1 to 2 seconds after the touch, and then OFF

NOTE: If active test is performed with brake pedal depressed, pedal stroke may change. This is normal. TEST IS STOPPED is displayed approximately 10 seconds after operation starts. After TEST IS STOPPED is displayed, to perform test again, repeat Step 6.ABS MotorTouch ON and OFF on the screen. Check that ABS motor relayoperates as shown in table below.

NOTE: If active test is performed with brake pedal depressed, pedal

stroke may change. This is normal. TEST IS STOPPED is displayed approximately 10 seconds

after operation starts.

LBR379

OperationABS solenoid valve ABS solenoid valve (ACT)

UP KEEP DOWN UP ACTUA-TOR UPACTUA-

TOR KEEPFR RH SOLFR RH ABS SOLE-NOID (ACT)

FR RH IN SOL OFF ON ON OFF OFF OFF

FR RH OUT SOL OFF OFF ON* OFF OFF OFF

FR LH SOLFR LH ABS SOLE-NOID (ACT)

FR LH IN SOL OFF ON ON OFF OFF OFF

FR LH OUT SOL OFF OFF ON* OFF OFF OFF

REAR SOLREAR IN SOL OFF ON ON OFF OFF OFFREAR OUT SOL OFF OFF ON* OFF OFF OFF

Operation ON OFFABS actuator relay ON ONABS motor relay ON OFF

SFIA0593E

TROUBLE DIAGNOSIS FOR SELF-DIAGNOSTIC ITEMS

BRC-29

[ABS]

C

D

E

G

H

I

J

K

L

M

A

B

BRC


TROUBLE DIAGNOSIS FOR SELF-DIAGNOSTIC ITEMS PFP:00000Wheel Sensor System EFS00529INSPECTION PROCEDURE1. CONNECTOR INSPECTIONDisconnect the ABS actuator and electric unit (control unit) connector E125 and wheel sensor of malfunction-ing code.Check the terminals for deformation, disconnection, looseness or damage.OK or NGOK >> GO TO 2.NG >> Repair or replace as necessary.

2. CHECK WHEEL SENSOR OUTPUT SIGNAL1. Connect ABS active wheel sensor tester (J-45741) to wheel sensor using appropriate adapter.2. Turn on the ABS active wheel sensor tester power switch.

NOTE:The green POWER indicator should illuminate. If the POWER indicator does not illuminate, replace thebattery in the ABS active wheel sensor tester before proceeding.

3. Spin the wheel of the vehicle by hand and observe the red SENSOR indicator on the ABS active wheelsensor tester. The red SENSOR indicator should flash on and off to indicate an output signal.NOTE:If the red SENSOR indicator illuminates but does not flash, reverse the polarity of the tester leads and

retest.Does the ABS active wheel sensor tester detect a signal?YES >> GO TO 3.NO >> Replace the wheel sensor. Refer to BRC-38, "Removal and Installation" .

3. CHECK TIRESCheck for inflation pressure, wear and size of each tire. Refer to WT-31, "SERVICE DATA AND SPECIFICA-TIONS (SDS)" .Are tire pressure and size correct and is tire wear within specifications?YES >> GO TO 4.NO >> Adjust tire pressure or replace tire(s).

4. CHECK WHEEL BEARINGSCheck wheel bearing axial end play. Refer to FAX-5, "WHEEL BEARING INSPECTION" , RAX-6, "Rear AxleBearing" (C200) or RAX-18, "Rear Axle Bearing" (M226).OK or NGOK >> GO TO 5.NG >> Repair or replace as necessary. Refer to FAX-5, "Removal and Installation" , RAX-6, "Rear Axle

Bearing" (C200) or RAX-18, "Rear Axle Bearing" (M226).

BRC-30

[ABS]TROUBLE DIAGNOSIS FOR SELF-DIAGNOSTIC ITEMS


5. CHECK WIRING HARNESS FOR SHORT CIRCUIT1. Disconnect ABS actuator and electric unit (control unit) connec-

tor and wheel sensor connector of malfunction code No.2. Check resistance between wheel sensor harness connector ter-

minals and ground.

OK or NGOK >> GO TO 6.NG >> Repair the circuit.

6. CHECK WIRING HARNESS FOR OPEN CIRCUITCheck continuity between ABS actuator and electric unit (control unit) harness connector and wheel sensorharness connector.

OK or NGOK >> Replace the ABS actuator and electric unit (control unit). Refer to BRC-40, "Removal and Installa-

tion" .NG >> Repair the circuit.

ABS Control Unit Inspection EFS0052BINSPECTION PROCEDURE1. SELF-DIAGNOSIS RESULT CHECKCheck self-diagnosis results.

Is the above displayed in the self-diagnosis display items?YES >> Replace ABS actuator and electric unit (control unit). Refer to BRC-40, "Removal and Installation"

.

NO >> Inspection End.

Continuity should not exist.

WFIA0343E

Wheel sensorABS actuator and

electric unit (control unit) Wheel sensor ContinuityConnector Terminals Connector Terminals

Front LH

E125

45E18

1

Yes

46 2

Front RH34

E1171

33 2

Rear LH37

C112

36 1

Rear RH42

C102

43 1

Continuity should exist.

Self-diagnosis resultsCONTROLLER FAILURE

G-SENSORABS VARIANT CODING


BRC-31

[ABS]

C

D

E

G

H

I

J

K

L

M

A

B

BRC


Solenoid Valve System Inspection EFS0052CINSPECTION PROCEDURE1. SELF-DIAGNOSIS RESULT CHECKCheck self-diagnosis results.

Is the above displayed in the self-diagnosis display items?YES >> GO TO 2.NO >> Inspection End.

2. CONNECTOR INSPECTION1. Disconnect ABS actuator and electric unit (control unit) connector E125.2. Check the terminals for deformation, disconnection, looseness or damage.OK or NGOK >> GO TO 3.NG >> Repair or replace as necessary.

3. CHECKING SOLENOID POWER AND GROUND1. Check voltage between ABS actuator and electric unit (control

unit) harness connector E125 and body ground.

2. Check resistance between ABS actuator and electric unit (con-trol unit) harness connector E125 and body ground.

OK or NGOK >> Perform self-diagnosis again. If the same results

appear, replace ABS actuator and electric unit (controlunit). Refer to BRC-40, "Removal and Installation" .

NG >> Repair the circuit.

Self-diagnosis resultsFR LH IN ABS SOL

FR LH OUT ABS SOLFR RH IN ABS SOL

FR RH OUT ABS SOLR-EV

R-AV

ABS actuator and electricunit (control unit) harness

connector E125Body

groundMeasured

value(Approx.)

32 12V

WFIA0195E


connector E125Body

groundMeasuredvalue

(Approx.)16 047 0

WFIA0196E

BRC-32

[ABS]TROUBLE DIAGNOSIS FOR SELF-DIAGNOSTIC ITEMS


Actuator Motor, Motor Relay, and Circuit Inspection EFS0052DINSPECTION PROCEDURE1. CHECKING SELF-DIAGNOSIS RESULTSCheck self-diagnosis results.


2. CONNECTOR INSPECTION1. Disconnect ABS actuator and electric unit (control unit) connector E125.2. Check the terminals for deformation, disconnection, looseness or damage.OK or NGOK >> GO TO 3.NG >> Repair or replace as necessary.

3. CHECKING ABS MOTOR AND MOTOR RELAY POWER SYSTEM1. Check voltage between ABS actuator and electric unit (control

unit) harness connector E125 and ground.

2. Check resistance between ABS actuator and electric unit (con-trol unit) connector E125 and ground.

OK or NGOK >> Perform self-diagnosis again. If the same results

appear, replace ABS actuator and electric unit (controlunit). Refer to BRC-40, "Removal and Installation" .

NG >> Repair the circuit.

Self-diagnosis resultsPUMP MOTOR

ACTUATOR RLY


connector E125Body

groundMeasured

value(Approx.)

1 12V

WFIA0209E

ABS actuator and electricunit (control unit)

harness connector E125Body

groundMeasured

value(Approx.)

16 047 0

WFIA0196E


BRC-33

[ABS]

C

D

E

G

H

I

J

K

L

M

A

B

BRC


ABS Control Unit Power and Ground Systems Inspection EFS0052FINSPECTION PROCEDURE1. SELF-DIAGNOSIS RESULT CHECKCheck self-diagnosis results.


2. CONNECTOR INSPECTION1. Disconnect the ABS actuator and electric unit (control unit) connector E125.2. Check the terminals for deformation, disconnection, looseness or damage.OK or NGOK >> GO TO 3.NG >> Repair or replace as necessary.

3. ABS CONTROL UNIT POWER AND GROUND CIRCUIT INSPECTIONMeasure the voltage and continuity between the ABS actuator and electric unit (control unit) harness connec-tor E125 and ground.

OK or NGOK >> Check the battery for loose terminals, low voltage, etc. Repair as necessary.NG >> Repair the circuit.

CAN Communication System Inspection EFS0052GINSPECTION PROCEDURE1. CHECK CONNECTOR1. Turn ignition switch OFF, disconnect the ABS actuator and electric unit (control unit) connector and check

the terminals for deformation, disconnection, looseness, and so on. If there is a malfunction, repair orreplace the terminal.

2. Reconnect connector to perform self-diagnosis.Is "CAN COMM CIRCUIT" displayed in self-diagnosis display items?YES >> Print out the self-diagnostic results, and refer to LAN-22, "CAN COMMUNICATION" .NO >> Connector terminal is loose, damaged, open, or shorted.

Self-diagnosis resultsBATTERY VOLTAGE

Signal nameABS actuator and electric unit

(control unit)harness connector E125

Bodyground Measured value

Power supply1

Battery voltage (Approx. 12V)32

Ground16

Continuity should exist.47

BRC-34

[ABS]TROUBLE DIAGNOSES FOR SYMPTOMS


TROUBLE DIAGNOSES FOR SYMPTOMS PFP:99999ABS Works Frequently EFS005F0

1. CHECK WARNING LAMP ACTIVATIONMake sure warning lamp remains off while driving.OK or NGOK >> GO TO 2.NG >> Carry out self-diagnosis. Refer to BRC-24, "SELF-DIAGNOSIS" .

2. CHECK WHEEL SENSORSCheck the following. Wheel sensor mounting for looseness Wheel sensors for physical damage Wheel sensor connectors for terminal damage or loose connections Sensor rotor and mount for physical damage (rear only)OK or NGOK >> GO TO 3.NG >> Repair or replace as necessary.

3. CHECK FRONT AND REAR AXLESCheck front and rear axles for excessive looseness. Refer to FAX-5, "WHEEL BEARING INSPECTION" ,RAX-6, "Rear Axle Bearing" (C200) or RAX-18, "Rear Axle Bearing" (M226).OK or NGOK >> GO TO 4.NG >> Repair as necessary.

4. CHECK BRAKE FLUID PRESSURECheck brake fluid pressure distribution.Refer to BRC-20, "Basic Inspection" .Is brake fluid pressure distribution normal?YES >> Inspection End.NO >> Perform Basic Inspection. Refer to BRC-20, "Basic Inspection" .

TROUBLE DIAGNOSES FOR SYMPTOMS

BRC-35

[ABS]

C

D

E

G

H

I

J

K

L

M

A

B

BRC


Unexpected Pedal Action EFS005F1

1. CHECK WARNING LAMP ACTIVATIONMake sure warning lamp remains off while driving.OK or NGOK >> GO TO 2.NG >> Carry out self-diagnosis. Refer to BRC-24, "SELF-DIAGNOSIS" .

2. CHECK BRAKE PEDAL STROKECheck brake pedal stroke.Is brake pedal stroke excessive?YES >> Perform Basic Inspection. Refer to BRC-20, "Basic

Inspection" .NO >> GO TO 3.

3. CHECK CONNECTOR AND BRAKING PERFORMANCE1. Disable ABS by disconnecting ABS actuator and electric unit (control unit) connector.2. Drive vehicle and check brake operation.

NOTE: Stopping distance may be longer than vehicles without ABS when road condition is slippery. Driving the vehicle with the ABS actuator and electric unit (control unit) disconnected may induce DTCs

in electrical control units using CAN communication. After the inspection, clear all DTCs. Refer to LAN-22, "CAN COMMUNICATION" .

OK or NGOK >> GO TO 4.NG >> Perform Basic Inspection. Refer to BRC-20, "Basic Inspection" .

4. CHECK WHEEL SENSORSCheck the following. Wheel sensor mounting for looseness Wheel sensors for physical damage Wheel sensor connectors for terminal damage or loose connectionsOK or NGOK >> Check ABS actuator and electric unit (control unit) connector terminals for deformation, discon-

nection, looseness or damage. Reconnect ABS actuator and electric unit (control unit) harnessconnector. Then retest.

NG >> Repair or replace as necessary.

SBR540A

BRC-36

[ABS]TROUBLE DIAGNOSES FOR SYMPTOMS


Long Stopping Distance EFS005F2

1. CHECK BASE BRAKING SYSTEM PERFORMANCE1. Disable ABS by disconnecting ABS actuator and electric unit (control unit) connector.2. Drive vehicle and check brake operation.

NOTE: Stopping distance may be longer than vehicles without ABS when road condition is slippery. Driving the vehicle with the ABS actuator and electric unit (control unit) disconnected may induce DTCs

in electrical control units using CAN communication. After the inspection, clear all DTCs. Refer to LAN-22, "CAN COMMUNICATION" .

OK or NGOK >> Go to BRC-34, "ABS Works Frequently" .NG >> Perform Basic Inspection. Refer to BRC-20, "Basic Inspection" .

ABS Does Not Work EFS005F3CAUTION:The ABS does not operate when the vehicle speed is 10 km/h (6 MPH) or less.

1. CHECK WARNING LAMP ACTIVATIONTurn ignition switch ON and check for warning lamp activation. Warning lamp should activate for approximately 2 seconds after turning the ignition switch ON.OK or NGOK >> Carry out self-diagnosis. Refer to BRC-24, "SELF-DIAGNOSIS" .NG >> Go to BRC-37, "ABS Warning Lamp Does Not Come On When Ignition Switch Is Turned On" .

Pedal Vibration or ABS Operation Noise EFS005F4NOTE:During ABS activation, pedal vibration may be felt and a noise may be heard. This is normal and does not indi-cate a malfunction.

1. CHECK SYMPTOM1. Apply brake.2. Start engine.Does the symptom occur only when engine is started?YES >> Carry out self-diagnosis. Refer to BRC-24, "SELF-DIAGNOSIS" .NO >> GO TO 2.

2. RECHECK SYMPTOMDoes the symptom occur only when electrical equipment switches (such as headlamps) are turned on?

YES >> Check for radio, antenna or related wiring that is routed too close to the ABS actuator and electricunit (control unit) and reroute as necessary.

NO >> Go to BRC-34, "ABS Works Frequently" .

TROUBLE DIAGNOSES FOR SYMPTOMS

BRC-37

[ABS]

C

D

E

G

H

I

J

K

L

M

A

B

BRC


ABS Warning Lamp Does Not Come On When Ignition Switch Is Turned On EFS005F5

1. CHECK ABS ACTUATOR AND ELECTRIC UNIT (CONTROL UNIT) FUSESCheck 30A fusible link n and 40A fusible link l for ABS actuator and electric unit (control unit). For fusible linklayout, refer to PG-4, "POWER SUPPLY ROUTING CIRCUIT" .OK or NGOK >> GO TO 2.NG >> If fusible link is blown, be sure to eliminate cause of problem before replacing.

2. CHECK ABS ACTUATOR AND ELECTRIC UNIT (CONTROL UNIT) POWER SUPPLY CIRCUITS1. Disconnect ABS actuator and electric unit (control unit) connec-

tor.2. Check voltage between ABS actuator and electric unit (control

unit) connector terminal 1 and ground and terminal 32 andground.

Does battery voltage exist?YES >> GO TO 3.NO >> Repair harness or connectors between fusible link and

ABS actuator and electric unit (control unit).

3. CHECK ABS ACTUATOR AND ELECTRIC UNIT (CONTROL UNIT) GROUND CIRCUITCheck continuity between ABS actuator and electric unit (controlunit) connector terminal 16 and ground and terminal 47 and ground.Does continuity exist?YES >> Replace ABS actuator and electric unit (control unit).

Refer to BRC-40, "Removal and Installation" .NO >> Repair harness or connectors between ABS actuator

and electric unit (control unit) and ground.

ABS Warning Lamp Stays On When Ignition Switch Is Turned On EFS005F6

1. CARRY OUT SELF-DIAGNOSISCarry out self-diagnosis. Refer to BRC-24, "SELF-DIAGNOSIS" .Are malfunctions detected in self-diagnosis?YES >> Refer to BRC-25, "Display Item List" .NO >> Refer to DI-34, "WARNING LAMPS" .

WFIA0199E

WFIA0196E

BRC-38

[ABS]WHEEL SENSORS


WHEEL SENSORS PFP:47910Removal and Installation EFS0052O

REMOVAL1. Remove wheel sensor mounting screw(s).

When removing the front wheel sensor, first remove the disc rotor to gain access to the front wheel sen-sor. Refer to BR-23, "Removal and Installation of Brake Caliper Assembly and Disc Rotor" .

2. Pull out the sensor, being careful to turn it as little as possible.CAUTION: Be careful not to damage sensor edge and sensor rotor teeth. Do not pull on the sensor harness.

3. Disconnect wheel sensor harness electrical connector, then remove harness from mounts.INSTALLATION Before installing wheel sensors, Inspect and replace sensor assembly if damaged. Clean wheel sensor hole and mounting surface with brake cleaner and a lint-free shop rag. Be careful that

dirt and debris do not enter the axle. Replace wheel sensor O-ring, then apply a coat of suitable grease to the O-ring and mounting hole. Installation is in the reverse order of removal.

1. Front wheel sensor 2. Rear wheel sensor (C200) 3. Rear wheel sensor (M226)WFIA0339E

SENSOR ROTOR

BRC-39

[ABS]

C

D

E

G

H

I

J

K

L

M

A

B

BRC


SENSOR ROTOR PFP:47970Removal and Installation EFS0052PFRONTThe wheel sensor rotors are built into the wheel hubs and are not removable. If damaged, replace wheel huband bearing assembly. Refer to FAX-5, "Removal and Installation" .REAR (C200)Removal and InstallationIt is necessary to disassemble the rear axle to replace the sensor rotor. Perform the axle shaft assemblyremoval procedure to replace sensor rotor. Refer to RAX-7, "Removal and Installation" .REAR (M226)Removal1. Remove axle shaft assembly. Refer to RAX-19, "Removal and Installation" .

NOTE:It is necessary to disassemble the rear axle to replace the sensor rotor.

2. Pull the sensor rotor of off the axle shaft using Tool and a press.

Installation1. Install new sensor rotor on axle shaft using a suitable length

steel tube and a press. Make sure sensor rotor is fully seated.CAUTION:Do not reuse the old sensor rotor.

2. Install axle shaft assembly. Refer to RAX-19, "Removal andInstallation" .CAUTION:Do not reuse the axle oil seal. The axle oil seal must bereplaced every time the axle shaft assembly is removedfrom the axle shaft housing.

Tool number : 205-D002 ( )

WFIA0341E

BRC-40

[ABS]ACTUATOR AND ELECTRIC UNIT (ASSEMBLY)


ACTUATOR AND ELECTRIC UNIT (ASSEMBLY) PFP:47660Removal and Installation EFS0059P

REMOVAL1. Disconnect the negative battery terminal.2. Drain the brake fluid. Refer to BR-9, "Drain and Refill" .3. Disconnect the actuator harness from the ABS actuator and electric unit (control unit).

CAUTION: To remove the brake tubes, use a flare nut wrench to prevent the flare nuts and brake tubes from

being damaged. Be careful not to splash brake fluid on painted areas.

4. Disconnect the brake tubes.5. Remove the three bolts and remove the ABS actuator and electric unit (control unit).

1. To rear 2. To front left 3. To front right4. From the master cylinder secondary

side5. From the master cylinder primary

side6. ABS actuator and electric unit (con-

trol unit)7. Harness connector 8. Grommet 9. Collar

WFIA0388E

ACTUATOR AND ELECTRIC UNIT (ASSEMBLY)

BRC-41

[ABS]

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INSTALLATIONInstallation is in the reverse order of removal.CAUTION:To install, use a flare nut wrench (commercial service tool). Always tighten brake tubes to specification when installing. Refer to BR-11, "Hydraulic Circuit" . Never reuse drained brake fluid. After installation of the ABS actuator and electric unit (control unit), refill brake system with new

brake fluid. Then bleed the air from the system. Refer to BR-10, "Bleeding Brake System" .

BRC-42

[ABLS/ABS]PRECAUTIONS


PRECAUTIONS PFP:00001Precautions for Supplemental Restraint System (SRS) AIR BAG and SEATBELT PRE-TENSIONER EFS005SLThe Supplemental Restraint System such as AIR BAG and SEAT BELT PRE-TENSIONER, used alongwith a front seat belt, helps to reduce the risk or severity of injury to the driver and front passenger for certaintypes of collision. This system includes seat belt switch inputs and dual stage front air bag modules. The SRSsystem uses the seat belt switches to determine the front air bag deployment, and may only deploy one frontair bag, depending on the severity of a collision and whether the front occupants are belted or unbelted.Information necessary to service the system safely is included in the SRS and SB section of this Service Man-ual.WARNING: To avoid rendering the SRS inoperative, which could increase the risk of personal injury or death

in the event of a collision which would result in air bag inflation, all maintenance must be per-formed by an authorized NISSAN/INFINITI dealer.

Improper maintenance, including incorrect removal and installation of the SRS, can lead to per-sonal injury caused by unintentional activation of the system. For removal of Spiral Cable and AirBag Module, see the SRS section.

Do not use electrical test equipment on any circuit related to the SRS unless instructed to in thisService Manual. SRS wiring harnesses can be identified by yellow and/or orange harnesses orharness connectors.

Precautions for Brake System EFS0059RCAUTION: Refer to MA-11, "RECOMMENDED FLUIDS AND LUBRICANTS" for recommended brake fluid. Never reuse drained brake fluid. Be careful not to splash brake fluid on painted areas; it may cause paint damage. If brake fluid is

splashed on painted areas, wash it away with water immediately. To clean or wash all parts of master cylinder and disc brake caliper, use clean brake fluid. Never use mineral oils such as gasoline or kerosene. They will ruin rubber parts of the hydraulic

system. Use flare nut wrench when removing and installing brake

tube. If a brake fluid leak is found, the part must be disassembled

without fail. Then it has to be replaced with a new one if adefect exists.

Turn the ignition switch OFF and remove the connector ofthe ABS actuator and electric unit (control unit) or the bat-tery terminal before performing the work.

Always torque brake lines when installing. Burnish the brake contact surfaces after refinishing or

replacing rotors, after replacing pads, or if a soft pedaloccurs at very low mileage.Refer to BR-26, "BRAKE BURNISHING PROCEDURE" (front disc brake) or BR-32, "BRAKE BUR-NISHING PROCEDURE" (rear disc brake).

WARNING: Clean brake pads and shoes with a waste cloth, then wipe with a dust collector.Precautions When Using CONSULT-II EFS0059SWhen connecting CONSULT-II to data link connector, connect them through CONSULT-II CONVERTER.CAUTION:If CONSULT-II is used with no connection of CONSULT-II CONVERTER, malfunctions might bedetected in self-diagnosis depending on control unit which carries out CAN communication.CHECK POINTS FOR USING CONSULT-II1. Has CONSULT-II been used without connecting CONSULT-II CONVERTER on this vehicle?

If YES, GO TO 2.

SBR686C

PRECAUTIONS

BRC-43

[ABLS/ABS]

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If NO, GO TO 5.2. Is there any indication other than indications relating to CAN communication system in the self-diagnosis

results? If YES, GO TO 3. If NO, GO TO 4.

3. Based on self-diagnosis results unrelated to CAN communication, carry out the inspection.4. Malfunctions may be detected in self-diagnosis depending on control units carrying out CAN communica-

tion. Therefor, erase the self-diagnosis results.5. Diagnose CAN communication system. Refer to LAN-22, "CAN COMMUNICATION" .Precautions for Brake Control EFS0059T During ABS operation, the brake pedal may vibrate lightly and a mechanical noise may be heard. This is

normal. Just after starting vehicle, the brake pedal may vibrate or a motor operating noise may be heard from


or snow-covered (fresh, deep snow) roads. When an error is indicated by ABS or another warning lamp, collect all necessary information from cus-

tomer (what symptoms are present under what conditions) and check for simple causes before startingdiagnosis. Besides electrical system inspection, check brake booster operation, brake fluid level, and fluidleaks.

If incorrect tire sizes or types are installed on the vehicle or brake pads are not Genuine NISSAN parts,stopping distance or steering stability may deteriorate.

If there is a radio, antenna or related wiring near control module, ABS function may have a malfunction orerror.

If aftermarket parts (car stereo, CD player, etc.) have been installed, check for incidents such as harnesspinches, open circuits or improper wiring.

Precautions for CAN System EFS0059U Do not apply voltage of 7.0V or higher to terminal to be measured. Maximum open terminal voltage of tester in use must be less than 7.0V. Before checking harnesses, turn ignition switch OFF and disconnect battery negative cable. Area to be repaired must be soldered and wrapped with tape.

Make sure that fraying of twisted wire is within 110 mm (4.33 in).

Do not make a bypass connection to repaired area. (If the circuitis bypassed, characteristics of twisted wire will be lost.)

PKIA0306E

PKIA0307E

BRC-44

[ABLS/ABS]PRECAUTIONS


Wiring Diagrams and Trouble Diagnosis EFS0059VWhen you read wiring diagrams, refer to the following: GI-15, "How to Read Wiring Diagrams". PG-4, "POWER SUPPLY ROUTING CIRCUIT".When you perform trouble diagnosis, refer to the following: GI-11, "HOW TO FOLLOW TEST GROUPS IN TROUBLE DIAGNOSES". GI-27, "How to Perform Efficient Diagnosis for an Electrical Incident".

PREPARATION

BRC-45

[ABLS/ABS]

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PREPARATION PFP:00002Special Service Tool EFS0052XThe actual shapes of Kent-Moore tools may differ from those of special service tools illustrated here.

Commercial Service Tools EFS0052Y

Tool number(Kent-Moore No.)Tool name

Description

(J-45741)ABS active wheel sensor tester

Checking operation of ABS active wheelsensors

205-D002( )Bearing splitter

Removing axle shaft bearingWFIA0101E

ZZA0700D

Tool name Description1. Flare nut crowfoot2. Torque wrench

Removing and installing brake pipinga: 10mm (0.39 in)/12mm (0.47 in)

S-NT360

BRC-46

[ABLS/ABS]SYSTEM DESCRIPTION


SYSTEM DESCRIPTION PFP:00000System Components EFS0052Z

WFIA0362E

SYSTEM DESCRIPTION

BRC-47

[ABLS/ABS]

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ABS Function EFS00530 The Anti-Lock Brake System detects wheel revolution while braking and improves handling stability during

sudden braking by electrically preventing wheel lockup. Maneuverability is also improved for avoidingobstacles.

If the electrical system malfunctions, the Fail-Safe function is activated, the ABS becomes inoperative andthe ABS warning lamp turns on.

The electrical system can be diagnosed using CONSULT-II. During ABS operation, the brake pedal may vibrate lightly and a mechanical noise may be heard. This is



or snow-covered (fresh, deep snow) roads.EBD Function EFS00531 Electronic Brake Distribution is a function that detects subtle slippages between the front and rear wheels

during braking, and it improves handling stability by electronically controlling the brake fluid pressurewhich results in reduced rear wheel slippage.

If the electrical system malfunctions, the Fail-Safe function is activated, the EBD and ABS become inoper-ative, and the ABS warning lamp and brake warning lamp are turned on.

The electrical system can be diagnosed using CONSULT-II. During EBD operation, the brake pedal may vibrate lightly and a mechanical noise may be heard. This is


engine compartment. This is a normal status of operation check.ABLS Function EFS00532 Active brake limited slip is a function to improve vehicle traction. Spinning of the drive wheels is detected

by the ABS actuator and electric unit (control unit) using inputs from the wheel speed sensors. If wheelspin occurs, the ABLS system brakes the spinning wheel which distributes the driving power to the otherdrive wheel.

The SLIP indicator lamp flashes to inform the driver of ABLS operation. During ABLS operation, the brake pedal may vibrate lightly and a mechanical noise may be heard. This is

normal.

Fail-Safe Function EFS00533CAUTION:If the Fail-Safe function is activated, perform the Self Diagnosis for ABS/ABLS system.ABS/EBD SYSTEMIn case of an electrical malfunction with the ABS, the ABS warning lamp will turn on. In case of an electricalmalfunction with the EBD system, the brake warning lamp and ABS warning lamp will turn on.The system will revert to one of the following conditions of the Fail-Safe function.1. For ABS malfunction, only the EBD is operative and the condition of the vehicle is the same condition of

vehicles without ABS/ABLS system.2. For EBD malfunction, the EBD and ABS become inoperative, and the condition of the vehicle is the same

as the condition of vehicles without ABS/ABLS or EBD system.ABLS SYSTEMIn case of an ABLS system malfunction, the SLIP indicator lamp will turn on. The condition of the vehicle is thesame as the condition of vehicles without ABS/ABLS system.

BRC-48

[ABLS/ABS]SYSTEM DESCRIPTION


Hydraulic Circuit Diagram EFS00534

WFIA0363E

CAN COMMUNICATION

BRC-49

[ABLS/ABS]

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CAN COMMUNICATION PFP:23710System Description EFS00535Refer to LAN-22, "CAN COMMUNICATION" .

BRC-50

[ABLS/ABS]TROUBLE DIAGNOSIS


TROUBLE DIAGNOSIS PFP:00000How to Perform Trouble Diagnoses for Quick and Accurate Repair EFS00536INTRODUCTIONThe ABS/ABLS system has an electronic control unit to control majorfunctions. The control unit accepts input signals from sensors andcontrols actuator operation. It is also important to check for air leaksin the booster or lines, lack of brake fluid, or other malfunctions in thebrake system.It is much more difficult to diagnose a malfunction that occurs inter-mittently rather than continuously. Most intermittent conditions arecaused by poor electrical connections or damaged wiring. In thiscase, careful checking of suspicious circuits may help prevent thereplacement of good parts.A visual check only may not find the cause of the malfunction, so aroad test should be performed.Before undertaking actual checks, take just a few minutes to talk witha customer who approaches with an ABS/ABLS complaint. The cus-tomer is a very good source of information, especially for intermittentconditions. Through the talks with the customer, find out what symp-toms are present and under what conditions they occur.Start your diagnosis by looking for conventional malfunctions first.This is one of the best ways to troubleshoot brake malfunctions onan ABS/ABLS equipped vehicle. Also check related Service Bulletinsfor information.

SEF233G

SEF234G

TROUBLE DIAGNOSIS

BRC-51

[ABLS/ABS]

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WORK FLOW

WFIA0364E

BRC-52



CLARIFY CONCERN A customer's description of a vehicle concern may vary depend-

ing on the individual. It is important to clarify the customer's con-cern.

Ask the customer about what symptoms are present under whatconditions. Use this information to reproduce the symptom whiledriving.

It is also important to use the diagnosis sheet to understandwhat type of symptoms the customer is experiencing.

EXAMPLE OF DIAGNOSIS SHEETSBR339B

WFIA0365E

TROUBLE DIAGNOSIS

BRC-53

[ABLS/ABS]

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Component Parts and Harness Connector Location EFS00537

WFIA0366E

BRC-54



Schematic EFS00538

WFWA0169E

TROUBLE DIAGNOSIS

BRC-55

[ABLS/ABS]

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Wiring Diagram ABLS EFS00539

WFWA0170E

BRC-56



WFWA0171E

TROUBLE DIAGNOSIS

BRC-57

[ABLS/ABS]

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WFWA0172E

BRC-58



WFWA0173E

TROUBLE DIAGNOSIS

BRC-59

[ABLS/ABS]

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Basic Inspection EFS0053ABRAKE FLUID LEVEL, FLUID LEAK, AND BRAKE PAD INSPECTION1. Check fluid level in the brake fluid reservoir. If fluid level is low, add fluid.2. Check the brake piping and around the ABS actuator and electric unit (control unit) for leaks. If there is

leaking or seeping fluid, check the following items. If ABS actuator and electric unit (control unit) connection is loose, tighten the piping to the specified

torque and recheck for leaks. If there is damage to the connection flare nut or ABS actuator and electric unit (control unit) threads,

replace the damaged part and recheck for leaks. When there is fluid leaking or seeping from a fluid connection, use a clean cloth to wipe off the fluid and

recheck for leaks. If fluid is still seeping out, replace the damaged part. If the fluid is leaking at the ABSactuator and electric unit (control unit), replace the ABS actuator and electric unit (control unit) assem-bly.CAUTION:The ABS actuator and electric unit (control unit) cannot be disassembled and must be replacedas an assembly.

3. Check the brake pads for excessive wear.POWER SYSTEM TERMINAL LOOSENESS AND BATTERY INSPECTIONMake sure the battery positive cable, negative cable and ground connection are not loose. In addition, makesure the battery is sufficiently charged.ABS WARNING LAMP AND SLIP INDICATOR LAMP INSPECTION1. Make sure ABS warning lamp and SLIP indicator lamp turn on for approximately 2 seconds when the igni-

tion switch is turned ON. If they do not, check CAN communications. If there are no errors with CAN com-munication system, check combination meter. Refer to DI-5, "COMBINATION METERS" .

2. Make sure the lamps turn off approximately 2 seconds after the ignition switch is turned ON. If the lampsdo not turn off, conduct self-diagnosis.

3. Make sure ABS warning lamp turns off approximately 2 seconds after the engine is started. If ABS warn-ing lamp has not turned off 10 seconds after the engine has been started, conduct self-diagnosis of theABS actuator and electric unit (control unit).

4. After conducting the self-diagnosis, be sure to erase the error memory. Refer to BRC-63, "CONSULT-IIFunction (ABS)" .

BRC-60



Warning Lamp and Indicator Timing EFS0053B

X: ON: OFF

Control Unit Input/Output Signal Standard EFS0053CREFERENCE VALUE FROM CONSULT-IICAUTION:The display shows the control unit calculation data, so a normal value might be displayed even in theevent the output circuit (harness) is open or short circuited.

Condition ABSwarning lamp

SLIPindicator lamp Remarks

When the ignition switch is OFF

brc

Documents

brake system

system description

system components

absebd system

abs function

function abs

abs control unit inspection

trouble diagnosis