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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 V: Camshaft Position Sensor >> Testing

Test V: Camshaft 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.

  1. 1) Preliminary Diagnosis For DTCs P0340, P0341 & P2614

    Perform visual inspection. Connect the scan tool. Retrieve and record all DTCs. Record freeze frame data. Clear all DTCs. Perform the On-Demand Self-Test. Are any DTCs retrieved? If yes, for P0340 or P0341, go to next step. For P2614, go to step  9). If no, unable to duplicate condition. Check for loose connections, damaged or corroded pins. Wiggle harness attempting to recreate fault.

  2. 2) DTCs P0340 or P0341

    Possible causes are:
    • CMP circuit open.
    • CMP circuit short to ground.
    • CMP circuit short to power.
    • Faulty PCM.
    • Faulty sensor.

    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. Restore the vehicle. Clear DTCs and retest the system.

  3. 3) Attempt To Regenerate DTCs

    Clear all DTCs. Start the engine. Increase RPM to greater than 1500 RPM for 10 seconds. Repeat two times. Engine off. Perform the KOEO ON-DEMAND SELF-TEST  under QUICK TEST. Is DTC P0340 or P0341 present? If yes, go to next step. If no, check for a loose connection. Repair as necessary. Check pins for damage or corrosion. Restore the vehicle. Clear DTCs and retest the system.

  4. 4) Check The Resistance Of The CMP Sensor Circuits

    Key off. Disconnect the PCM engine harness connector C1381C. Measure the resistance between PCM engine harness connector C1381C terminals No. 31 and 43. See CONTROL MODULE CONNECTOR IDENTIFICATION . Is the resistance between 800-1,000 ohms? If yes, go to next step. If no, go to step  7).

  5. 5) Check For Intermittent Short

    Connect the PCM engine harness connector. Connect the scan tool. Key on, engine off. Select the CMP sensor VOLTS PID. Monitor PID while wiggling the wire harness. Is voltage present? If yes, repair short to voltage. Restore the vehicle. Clear DTCs and retest the system. If no, go to next step.

  6. 6) Confirm PCM Fault

    Key on. Clear all DTCs. Perform the KOEO ON-DEMAND SELF-TEST  under QUICK TEST. Are any DTCs present? If yes, install a new PCM. Restore the vehicle. Clear DTCs and retest the system. If no, unable to duplicate condition. CHECK for loose connections, damaged or corroded pins. Wiggle harness attempting to recreate fault.

  7. 7) Check CMP Sensor Circuits

    Disconnect the CMP sensor. Inspect the CMP sensor connector for damaged or corroded pins. Measure the resistance between PCM harness connector C1381C terminal No. 31 and ground; and between terminal No. 43 and ground. Is the resistance greater than 10,000 ohms? If yes, go to next step. If no, repair short in CMP sensor circuits. Restore the vehicle. Clear DTCs and retest the system.

  8. 8) Check CMP Circuits For An Open

    Measure the resistance between PCM engine harness connector C1381C terminal No. 31 and CMP sensor harness connector terminal No. 1; and between PCM engine harness connector C1381C terminal No. 43 and CMP sensor harness connector terminal No. 2. See Figure. Is the resistance less than 0.5 ohm? If yes, install a new CMP sensor. Restore the vehicle. Clear DTCs and retest the system. If no, repair open circuit. Restore the vehicle. Clear DTCs and retest the system.

  9. 9) DTC P2614

    Possible causes are:
    • Signal circuit short to voltage.
    • Signal circuit shorted to ground.
    • Signal circuit open.
    • Faulty PCM.

    Clear DTCs. Perform the KOEO ON-DEMAND SELF-TEST  under QUICK TEST. Are any DTCs 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.

  10. 10) Check Camshaft Position Signal For A Short To Voltage

    Key off. Disconnect the PCM engine harness connector C1381C. Disconnect the FICM harness connector C1388C. Key on. Measure the voltage between FICM harness connector C1388C terminal No. 10 and ground. 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.

  11. 11) Check Camshaft Position Signal For A Short To Ground

    Key off. Measure the resistance between FICM harness connector C1388C terminal No. 10 and ground. See CONTROL MODULE CONNECTOR IDENTIFICATION . Is the resistance greater than 10,000 ohms? If yes, go to next step. If no, repair short to ground in the camshaft output signal circuit. Restore the vehicle. Clear DTCs and retest the system.

  12. 12) Check Camshaft Position Signal For An Open

    Measure the resistance between FICM harness connector C1388C terminal No. 10 and PCM engine harness connector C1381C terminal No. 20. Is the resistance less than 5 ohms? If yes, install a new PCM. Restore the vehicle. Clear DTCs and retest the system. If no, repair open in the camshaft signal output circuit. Restore the vehicle. Clear DTCs and retest the system.
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