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Overview

Circuit Description

The engine position sensor monitors the engine position and the engine speed, thenpasses this information to the electronic control module (ECM) through the sensor harness.

Component Location

The engine position sensor is located above the accessory drive.

Shop Talk

If the fault occurs only at a certain engine temperature, check the engine positionsensor circuit while the engine is at that particular temperature.

Check the camshaft end play to make sure that the camshaft gear is not moving toofar away from the end of the engine position sensor.

Check for moisture in the sensor harness connector at the ECM. Possible causes of this fault code include a damaged engine position sensor, short

circuit, or an open circuit.

Cautions and Warnings

FAULT CODE 115Engine Position Sensor Circuit

CODE REASON EFFECT

Fault Code: 115PID: P190SPN: 190FMI: 2/2LAMP: RedSRT:

No engine speed signal detected at bothengine position sensor circuits.

Engine will shut downand will not start.

Engine Position Sensor Circuit

of 13Engine Position Sensor Circuit

06/08/2010mk:@MSITStore:E:\C\Intelect\INSITE\FIS\FIS3666266.chm::/html/82-fc115.htm



Troubleshooting Steps

CAUTION

To reduce the possibility of damaging a new ECM, all other active faultcodes must be investigated prior to replacing the ECM.

CAUTION

To reduct the possibility of pin and harness damage, use the followingtest leads when taking a measurement:Part Number 3822758 - male Deutsch/AMP/Metri-Pack test leadPart Number 3823996 - female Weather-Pack test lead.

CAUTION

To reduce the possibility of pin and harness damage, use the followingtest lead when taking a measurement:Part Number 3823996 - female Weather-Pack test lead.

CAUTION

To reduce the possibility of pin and harness damage, use the followingtest lead when taking a measurement:

Part Number 3822758 - male Deutsch/AMP/Metri-Pack test lead.

STEPS SPECIFICATIONS

STEP 1. Check the engine position sensor.

STEP 1A. Inspect the engineposition sensor and the sensor

harness connector pins.

No damaged pins

STEP 1B. Check for a short circuitto ground.

More than 100k ohms

STEP 1C. Inspect the engineposition sensor.

No damaged engine position sensor

STEP 1D. Check the resistance ofthe engine position sensor.

1000 to 2000 ohms

STEP 1E. Check for a short circuitbetween the coils.

More than 100k ohms

STEP 2. Check the sensor harness.





Guided Step 1 - Check the engine position sensor.

Guided Step 1A - Inspect the engine position sensor and the sensorharness connector pins.

STEP 2A. Inspect the sensorharness and the ECM connectorpins.

No damaged pins

STEP 2B. Check for a short circuitto ground.

More than 100k ohms

STEP 2C. Check for a short circuitfrom pin to pin.

More than 100k ohms

STEP 2D. Check for an opencircuit.

1000 to 2000 ohms

STEP 3. Clear the fault codes.

STEP 3A. Disable the fault code. Fault Code 115 inactive

STEP 3B. Clear the inactive faultcodes.

All fault codes cleared

Conditions

Turn the keyswitch OFF. Disconnect the engine harness

from the engine position sensor.

Action

inspect the sensor harness and the

engine position sensor connector pinsfor the following:

Corroded pins Bent or broken pins Pushed back or expanded pins Moisture in or on the connector Missing or damaged connector

seals Dirt or debris in or on the

connector pins.

OK NOT OK





Guided Step 1B - Check for a short circuit to ground.

No damaged pins Repair the damaged pins

Flush the dirt, debris, or moisture from theconnector pins.

Repair or replace the engine harness or

ECM, whichever has the damaged pins.

Flush the dirt, debris, or moisturefrom the connector pins usingelectrical contact cleaner, Part Numer3824510.

Install the appropriate connector sealif it is damaged or missing.

Repair the engine harness. Refer toProcedure 019-201.

Replace engine harness. Refer to

Procedure 019-043. Replace engine position sensor.

Refer to Procedure 019-043.

Go to 1B Go to 3A

CAUTION

To reduce the possibility of pin and harness damage, use the followingtest lead when taking a measurement:Part Number 3823996 - female Weather-Pack test lead.

Conditions



Action

check for a short circuit to ground.

Measure the resistance from pin Aof the sensor connector to theengine block ground.

Measure the resistance from pin B

of the sensor connector to theengine block ground.





Guided Step 1C - Inspect the engine position sensor.

Guided Step 1D - Check the resistance of the engine position sensor.

OK NOT OK

More than 100k ohms Replace the engine position sensor


Go to 1C Go to 3A

Conditions


from the engine position sensor. Remove the engine position

sensor.

Action

inspect the engine position sensor fordamage.

Metal debris on the end of thesensor

Damage to the end of the sensorcaused by camshaft gear orflywheel ring gear

Oil leakage or insulation problemssuch as swelling

Damaged electrical potting insensing end of sensor.

OK NOT OK

No damaged engine position sensor Replace the engine position sensor


Go to 1D Go to 3A

CAUTION

To reduce the possibility of pin and harness damage, use the following





Guided Step 1E - Check for a short circuit between the coils.

test lead when taking a measurement:Part Number 3823996 - female Weather-Pack test lead.

Conditions



Action

check the resistance of the engineposition sensor.

Measure the resistance from pin Ato pin D of the engine position

sensor. Measure the resistance from pin B

to pin C of the engine positionsensor.

OK NOT OK

1000 to 2000 ohms Replace the engine position sensor


Go to 1E Go to 3A

CAUTION

To reduce the possibility of pin and harness damage, use the following

test lead when taking a measurement:Part Number 3823996 - female Weather-Pack test lead.

Conditions



Action

check for a short circuit between the





Guided Step 2 - Check the sensor harness.

Guided Step 2A - Inspect the sensor harness and the ECM connector pins.

coils.

Measure the resistance from pin Ato pin B of the engine positionsensor.

OK NOT OK

More than 100k ohms Replace the engine position sensor


Go to 2A Go to 3A

Conditions

Turn the keyswitch OFF. Disconnect the sensor harness

from the engine position sensor. Disconnect the sensor harness

connector from the ECM.

Action

inspect the engine position sensor andthe harness connector pins for thefollowing:

Corroded pins Bent or broken pins Pushed back or expanded pins Moisture in or on the connector Missing or damaged connector

seals Dirt or debris in or on the

connector pins.

OK NOT OK

No damaged pins Repair the damaged pins





Guided Step 2B - Check for short circuit to the ground.

Repair or replace the engine harness orsensor, whichever has the damaged pins.

Flush the dirt, debris, or moisturefrom the connector pins usingelectrical contact cleaner, Part

Number 3824510. Install the appropriate connector seal

if it is damaged or missing. Repair the engine harness. Refer to

Procedure 019-204 or 019-201. Replace the engine harness. Refer to

Procedure 019-043. Replace the engine position sensor.


Go to 2B Go to 3A

CAUTION



Conditions

Turn thekeyswitchOFF.

Disconnectthe sensorharnessconnectorfrom theECM.

Disconnectthe sensorharness fromthe enginepositionsensor.

Action

check for short





Guided Step 2C - Check for a short circuit from pin to pin.

circuit to ground.

Measure theresistancefrom pin 47

of the sensorharnessconnector toengine blockground.

Measure theresistancefrom pin 50of the sensorharnessconnector toengine blockground.

OK NOT OK

More than 100kohms

Repair or replace the engine harness

Repair the engine harness. Refer to Procedure 019-204. Replace the engine harness. Refer to Procedure 019-043.

Go to 2C Go to 3A

CAUTION



Conditions

Turn thekeyswitchOFF.

Disconnectthe sensor

harnessconnectorfrom the





ECM. Disconnect

the sensorharness fromthe enginepositionsensor.

Action

check for a shortcircuit from pin topin.

Measure theresistancefrom pin 47

of the sensorharnessconnector toall other pinsin theconnector.

Measure theresistancefrom pin 48of the sensorharness

connector toall other pinsin theconnector.

Measure theresistancefrom pin 49of the sensorharnessconnector toall other pins

in theconnector.

Measure theresistancefrom pin 50of the sensorharnessconnector toall other pinsin theconnector.

OK NOT OK





Guided Step 2D - Check for an open circuit.

More than 100kohms

Repair or replace the engine harness

Repair the engine harness. Refer to Procedure 019-204. Replace the engine harness. Refer to Procedure 019-043.

Go to 2D Go to 3A

CAUTION



Conditions

Turn the keyswitch OFF. Disconnect the sensor harness

connector from the ECM. Connect the sensor harness to the

engine position sensor.

Action

check for an open circuit.

Measure the resistance from pin49 to pin 50 of the sensor harnessconnector.

Measure the resistance from pin47 to pin 48 of the sensor harnessconnector.

OK NOT OK

1000 to 2000 ohms Repair or replace the engine harness

Repair the engine harness. Refer toProcedure 019-204.

Replace the engine harness. Refer toProcedure 019-043.

Go to 3A Go to 3A





Guided Step 3 - Clear the fault codes.

Guided Step 3A - Disable the fault code.

Guided Step 3B - Clear the inactive fault codes.

Conditions

Connect all components. Turn the keyswitch ON.

Action

disable the fault code.

Start the engine and let it idle for 1minute.

Using INSITE™, verify Fault Code115 is inactive.

OK NOT OK

Fault Code 115 inactive Return to the troubleshooting steps orcontact your local Cummins AuthorizedRepair Location if all the steps have beencompleted and checked again.

Go to 3B Go to 1A

Conditions

Connect all components. Turn the keyswitch ON.

Action

clear the inactive fault codes.

Erase the inactive fault codesusing INSITE™.

OK NOT OK

All fault codes cleared Troubleshoot any remaining active faultcodes.



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