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Home >> Ford >> 2002 >> Taurus SES, 3.0 S >> Repair and Diagnosis >> External Pages >> Different car >> Section 194 (Engine Controls - Self-Diagnostics - 6.0L (99P F450/550) Diesel) >> System Tests >> Test D: Crankshaft Position Sensor >> Testing

Test D: Crankshaft Position Sensor: Testing

WARNING: This page is about a different car, the 2003 Ford Pickup, 2003 Ford F550 Super Duty, 2003 Ford F450 Super Duty, 2003 Ford Excursion, and 2003 Ford Cab & Chassis. However, it is still accessible from the selected car via links, so may be relevant.
CAUTION: The Powertrain Control Module (PCM) harness connectors must be properly seated and the connector latch properly attached to eliminate possible driveability concerns or a no-start condition. Installing PCM connectors on an angle may cause a bad connection, misdiagnosis and damaged components. Install the connector on where the lever pivots and seats itself. Apply light pressure to get the connector into position on the PCM lever to fully seat the connector.
NOTE: When the PCM engine harness connector is disconnected additional DTCs will be set. All DTCs must be cleared before returning the vehicle to service.
NOTE: Fuel Injector Control Module (FICM) may be referred to as Injector Driver Module (IDM).
NOTE: If vehicle does not start, go to HARD START/NO-START DIAGNOSTIC PROCEDURES in SYSTEM & COMPONENT TESTING - 6.0L DIESEL article to diagnose a no-start condition. Some DTCs require that the engine go through more than one key cycle to set. DTC P0336 and DTC 2617 have been calibrated to set a fault when 5 events have occurred in the crank mode and 10 faults in the run mode.

  1. 1) Preliminary Diagnosis For DTCS P0335, P0336 & P2617

    Perform the visual inspection. Connect the scan tool. Retrieve and record all DTCs. Clear all DTCs. Perform the KOEO ON-DEMAND SELF-TEST  under QUICK TEST. Perform the KOER ON-DEMAND SELF-TEST  under QUICK TEST. Is DTC P0335, P0336 or P2617 present? If yes, for DTCs P0335 or P0336, go to next step. For DTC P2617, go to step  8). If no, unable to duplicate condition. Check for loose connection, damaged or corroded terminals or pins. Wiggle harness attempting to recreate the fault. Repair as necessary. See TROUBLE SHOOTING - NO CODES - 6.0L DIESEL article if a driveability concern exists.

  2. 2) Diagnostic Trouble Code (DTC) P0335 & P0336

    Possible causes are:
    • One or both sensor outputs open.
    • One of both sensor outputs shorted to ground.
    • Sensor outputs shorted together.
    • One output open and the other output shorted to ground.
    • Sensor output shorted to voltage.
    • Sensor faulty.
    • PCM faulty.

    Does the engine start? If yes, go to next step. If no, see HARD START/NO-START DIAGNOSTIC PROCEDURES in SYSTEM & COMPONENT TESTING - 6.0L DIESEL article to diagnose no-start condition.

  3. 3) Check The Resistance Of The CKP Sensor

    Key off. Disconnect the PCM engine harness connector C1381C. Measure the resistance between PCM engine harness connector C1381C terminals No. 30 and 41. See CONTROL MODULE CONNECTOR IDENTIFICATION . Is the resistance between 300-400 ohms? If yes, go to next step. If no, go to step  6).

  4. 4) Check For An Intermittent Short In The CKP Sensor Circuits

    Reconnect the PCM engine harness connector. Key on. Select the CKP sensor VOLTS PID. Monitor PID while wiggling the wire harness. Is voltage present? If yes, repair intermittent short to voltage. Restore the vehicle. Clear DTCs and retest the system. If no, go to next step.
    5. NOTE: Some DTCs require that the engine go through more than one key cycle to set.

  5. 5) Confirm PCM Fault
    Key off. Reconnect all electrical connectors. Key on. Clear all DTCs. Perform the KOEO ON-DEMAND SELF-TEST  under QUICK TEST. Perform the KOER ON-DEMAND SELF-TEST  under QUICK TEST. Is DTC P0335, P0336 or P2617 present? If yes, install a new PCM. Restore the vehicle. Clear DTCs and retest the system. If no, unable to duplicate the condition. Check for loose connection, damaged or corroded terminals or pins. Wiggle harness attempting to recreate the fault. See TROUBLE SHOOTING - NO CODES - DIESEL - 6.0L if a driveability concern exists.

  6. 6) Check CKP Sensor Circuits For A Short To Ground

    Disconnect the CKP sensor. Inspect the CKP sensor for damaged or corroded pins. Measure the resistance between PCM engine harness connector C1381C terminal No. 30 and ground, and between terminal No. 41 and ground. Is the resistance greater than 10,000 ohms? If yes, go to next step. If no, repair short in CKP sensor circuit. Restore the vehicle. Clear DTCs and retest the system.

  7. 7) Check CKP Sensor Circuits For An Open

    Measure the resistance between the PCM engine harness connector C1381C terminal No. 30 and CKP sensor harness connector terminal No. 1, and PCM engine harness connector C1381C terminal No. 41 and CKP sensor harness connector terminal No. 2. See Figure. Are the resistances less than 0.5 ohm? If yes, install a new CKP sensor. Restore the vehicle. Clear DTCs and retest the system. If no, repair open circuit. Restore the vehicle. Clear DTCs and retest the system.
    8. NOTE: Some DTCs require that the engine go through more that one key cycle to set. DTC P2617 has been calibrated to set a fault when 5 events have occurred in the crank mode and 10 faults in the run mode.

  8. 8) DTC P2617
    Possible causes are:
    • Signal shorted to voltage.
    • Signal shorted to ground.
    • Signal circuit open.
    • Faulty PCM.

    Perform the KOEO ON-DEMAND SELF-TEST  under QUICK TEST. Perform the KOER ON-DEMAND SELF-TEST  under QUICK TEST. Is DTC P2617 present? If yes, go to next step. If no, unable to duplicate condition. Check for loose connections, damaged or corroded pins. Wiggle harness attempting to recreate fault. See TROUBLE SHOOTING - NO CODES - DIESEL - 6.0L if a driveability concern exists.

  9. 9) Check Crankshaft Position Signal Circuit For A Short To Voltage

    Key off. Disconnect the PCM engine harness connector C1381C. Disconnect the FICM harness connector "C". Key on. Measure the voltage between FICM harness connector "C" terminal No. 5 and ground. See CONTROL MODULE CONNECTOR IDENTIFICATION . Is the voltage less than 0.2 volt? If yes, go to next step. If no, repair short to voltage. Restore the vehicle. Clear DTCs and Retest the system.

  10. 10) Check Crankshaft Position Signal For A Short To Ground

    Key off. Measure the resistance between FICM harness connector "C" terminal No. 5 and ground. Is the resistance greater than 10,000 ohms? If yes, go to next step. If no, repair short to ground in signal output circuit. Restore the vehicle. Clear DTCs and retest the system.

  11. 11) Check Crankshaft Position Signal Circuit For An Open

    Measure the resistance between FICM harness connector "C" terminal No. 5 and PCM engine harness connector C1381C terminal No. 19. Is the resistance less than 0.5 ohm? If yes, install a new PCM. Restore the vehicle. Clear DTCs and retest the system. If no, repair open in output signal circuit.
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