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Home >> Chrysler >> 2006 >> PT Cruiser Base, 2D Convertible, Standard >> Repair and Diagnosis >> Engine Performance >> Testing & Diagnosis >> 2.4L Engine - DTCS P0335 To P0508 >> Diagnosis And Testing >> P0499-NVLD Canister Vent Valve Solenoid Circuit High >> Diagnostic Test

Diagnostic Test

  1. 1)  VEHICLE HISTORY AND SERVICE BULLETIN INVESTIGATION 

    Ignition on, engine not running.

    With a scan tool, read DTCs and record the related Freeze Frame data if any DTC(s) are present.

    Whether or not any DTC(s) are present you will want to check the following items which may assist in repairing the customer's complaint successfully.

    Check the vehicles repair history.

    If the vehicle has a repair history that pertains to the customer's current complaint, review the repair.

    Inspect the vehicle for any aftermarket accessories that may have been installed incorrectly.

    Check for any service bulletin(s) related to the customer's complaint or DTC(s).

    If a service bulletin applies, follow the instructions per the service bulletin.

    Choose the following scenario that best applies. 

    The service bulletin repaired the customer's complaint. 

    1. Testing complete.

    A DTC is present, no service bulletins apply, or the service bulletin didn't repair the customer's complaint. 

    1. Go To  2).
  2. 2)  ACTIVE DTC 

    Ignition on, engine not running.

    With a scan tool, read DTCs.

    Is the DTC active at this time? 

    Yes 

    1. Go To  3).

    No 

    1. Refer to the INTERMITTENT CONDITION diagnostic procedure.
    2. Perform the POWERTRAIN VERIFICATION TEST. (Refer to STANDARD PROCEDURE - POWERTRAIN VERIFICATION TEST) .
  3. 3)  NVLD SOLENOID 

    Turn the ignition off.

    Disconnect the NVLD Assembly harness connector.

    Measure the resistance of the NVLD Solenoid coil.

    Is the resistance between 7.5 to 8.5 ohms? 

    Yes 

    1. Go To  4).

    No 

    1. Replace the NVLD Assembly.
    2. Perform the POWERTRAIN VERIFICATION TEST. (Refer to STANDARD PROCEDURE - POWERTRAIN VERIFICATION TEST) .
  4. 4)  (K106) NVLD SOLENOID CONTROL CIRCUIT SHORTED TO BATTERY VOLTAGE 
    Fig 1: MEASURING FOR VOLTAGE ON THE NVLD SOLENOID CONTROL CIRCUIT
    GC0041685Courtesy of DAIMLERCHRYSLER CORP.

    Disconnect the C3 PCM harness connector.

    Take this measurement with the Ignition in the off (lock) position and in the Ignition on, engine off position.

    Measure the voltage on the (K106) NVLD Solenoid Control circuit in the NVLD Assembly harness connector.

    Is the voltage above 0 volts? 

    Yes 

    1. Repair the short to battery voltage in the (K106) NVLD Solenoid Control circuit.
    2. Perform the POWERTRAIN VERIFICATION TEST. (Refer to STANDARD PROCEDURE - POWERTRAIN VERIFICATION TEST) .

    No 

    1. Go To  5).
  5. 5)  (K106) NVLD SOLENOID CONTROL CIRCUIT OPEN 
    Fig 2: MEASURING RESISTANCE OF THE NVLD SOLENOID CONTROL CIRCUIT
    GC0041686Courtesy of DAIMLERCHRYSLER CORP.

    Turn the ignition off.

    CAUTION: Do not probe the PCM harness connectors. Probing the PCM harness connectors will damage the PCM terminals resulting in poor terminal to pin connection. Install Miller Special Tool No. 8815 to perform diagnosis.

    Measure the resistance of the (K106) NVLD Solenoid Control circuit from the NVLD Assembly harness connector to the appropriate terminal of special tool No. 8815.

    Is the resistance below 5.0 ohms? 

    Yes 

    1. Go To  6).

    No 

    1. Repair the open in the (K106) NVLD Solenoid Control circuit.
    2. Perform the POWERTRAIN VERIFICATION TEST. (Refer to STANDARD PROCEDURE - POWERTRAIN VERIFICATION TEST) .
  6. 6)  (Z904) GROUND CIRCUIT OPEN 
    Fig 3: MEASURING RESISTANCE BETWEEN THE GROUND CIRCUIT AND GROUND
    GC0041657Courtesy of DAIMLERCHRYSLER CORP.

    Measure the resistance between the (Z904) Ground circuit and ground.

    Is the resistance below 5.0 ohms? 

    Yes 

    1. Go To  7).

    No 

    1. Repair the open in the (Z904) Ground circuit.
    2. Perform the POWERTRAIN VERIFICATION TEST. (Refer to STANDARD PROCEDURE - POWERTRAIN VERIFICATION TEST) .
  7. 7)  PCM 
    NOTE: Before continuing, check the PCM harness connector terminals for corrosion, damage, or terminal push out. Repair as necessary.

    Using the schematics as a guide, inspect the wire harness and connectors. Pay particular attention to all Power and Ground circuits.

    Were there any problems found? 

    Yes 

    1. Repair as necessary.
    2. Perform the POWERTRAIN VERIFICATION TEST. (Refer to STANDARD PROCEDURE - POWERTRAIN VERIFICATION TEST) .

    No 

    1. Replace and program the Powertrain Control Module in accordance with the Service Information. Refer to MODULE-POWERTRAIN CONTROL and STANDARD PROCEDURE - PCM/ECM/SKREEM PROGRAMMING .
    2. Perform the POWERTRAIN VERIFICATION TEST. (Refer to STANDARD PROCEDURE - POWERTRAIN VERIFICATION TEST) .
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