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Home >> Chrysler >> 2009 >> PT Cruiser Limited >> Repair and Diagnosis >> Engine Performance >> Testing & Diagnosis >> DRIVEABILITY - Gas - Non-DTC Diagnostics >> Diagnosis And Testing >> No Response With A No Start Condition >> Diagnostic Test

Diagnostic Test

  1. TEST FOR INTERMITTENT CONDITION 
    1. Turn the ignition on.
      NOTE: Ensure the IOD fuse is installed and battery voltage is between 10.0 and 16.0 volts.
      NOTE: The scan tool and cable must be operating properly for the results of this test to be valid.
    2. With the scan tool, select ECU view.
      NOTE: A red "X" will be next to the module that is not communicating, indicating that the module is not active on the Bus network. A green check indicates that the module is active on the Bus network.
      NOTE: Check the FCM for any active CAN C hardware DTCs, perform DTC before proceeding.

      Does the scan tool display a red "X" next to the module?

      Yes 

      • Go to step  2

      No 

      • The no response condition is not present at this time. Using the wiring diagram/schematic as a guide, inspect the wiring for chafed, pierced, pinched, and partially broken wires and the wiring harness connectors for broken, bent , pushed out, and corroded terminals.
  2. ASD CONTROL CIRCUIT OPERATION 
    NOTE: Before continuing check the following for proper operation, repair as necessary.

    Battery voltage above 11 volts.

    Battery cable terminals are clean and fastened properly.

    Chassis ground circuit is clean and fastened properly.

    1. Turn the ignition off.
    2. Remove the ASD Relay.
    3. Using a 12-volt test light connected to battery voltage, probe the (K334) ASD Control circuit.
    4. Monitor the test light.
    5. Turn the ignition on.
      NOTE: The test light will illuminate for approximately 3 seconds and then turn off, this is considered normal operation.

      Does the test light illuminate brightly?

      Yes 

      • Go to step  9

      No 

      • Go to step  3
  3. (K334) ASD CONTROL CIRCUIT SHORT TO BATTERY VOLTAGE 
    1. Turn the ignition off.
    2. Disconnect the PCM harness connectors.
    3. Turn the ignition on.
    4. Measure the voltage on the (K334) ASD Control circuit.

      Does the voltmeter indicate voltage present?

      Yes 

      No 

      • Go to step  4
  4. (K334) ASD RELAY CONTROL CIRCUIT OPEN 
    Fig 1: Checking ASD Relay Control Circuit
    GC0117714Courtesy of CHRYSLER LLC
    1. 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 PCM Pinout Box 8815 to perform diagnosis.
    2. Measure the resistance of the (K334) ASD Relay Control circuit from the ASD Relay harness connector to the appropriate terminals of special tool #8815.

      Is the resistance below 5.0 ohms?

      Yes 

      • Go to step  5

      No 

  5. (K334) ASD RELAY CONTROL CIRCUIT SHORTED TO GROUND 
    Fig 2: Checking ASD Relay Control Circuit
    GC0117715Courtesy of CHRYSLER LLC
    1. Measure the resistance between ground and the (K334) ASD Relay Control circuit.

      Is the resistance below 100 ohms?

      Yes 

      No 

      • Go to step  6
  6. (A931) PCM FUSED B+ CIRCUIT 
    Fig 3: Checking PCM Fused B+ Circuit
    GC0117716Courtesy of CHRYSLER LLC
    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 PCM Pinout Box 8815 to perform diagnosis.
    1. Using a 12-volt test light connected to ground probe the (A931) Fused B+ circuit at the appropriate terminal of special tool #8815.
      NOTE: The test light should be illuminated and bright. Compared the brightness to that of a direct connection to the battery.

      Does the test light illuminate brightly?

      Yes 

      • Go to step  7

      No 

  7. (F20)/(F901) PCM FUSED IGNITION SWITCH CIRCUITS 
    Fig 4: Checking PCM Fused Ignition Switch Circuits
    GC0117717Courtesy of CHRYSLER LLC
    1. Turn the ignition on.
    2. Using a 12-volt test light connected to ground, probe both the PCM (F20) and (F901) Fused Ignition Switch Output circuits in the appropriate terminals of special tool #8815.
      NOTE: The test light should be illuminated and bright at both terminals. Compared the brightness to that of a direct connection to the battery.

      Does the test light illuminate brightly?

      Yes 

      • Go to step  8

      No 

  8. (Z130)/(Z131) PCM GROUND CIRCUITS 
    Fig 5: Checking PCM Ground Circuits
    GC0117718Courtesy of CHRYSLER LLC
    1. Turn the ignition off.
    2. Using a 12-volt test light connected to battery voltage, probe the both (Z130)/(Z131) PCM ground circuits in the appropriate terminals of special tool #8815.
      NOTE: The test light should be illuminated and bright. Compared the brightness to that of a direct connection to the battery.

      Does the test light illuminate brightly?

      Yes 

      • Replace and program the Powertrain Control Module in accordance with the service information.

      No 

  9. (D65) CAN C BUS (+) CIRCUIT OPEN 
    Fig 6: Checking CAN C BUS (+) Circuit
    GC0117676Courtesy of CHRYSLER LLC
    1. Turn the ignition off.
    2. Disconnect the TIPM C3 harness connector.
    3. Measure the resistance of the (D65) CAN C Bus (+) circuit between the TIPM connector and the appropriate terminal of the special tool #8815.

      Is the resistance below 5.0 ohms?

      Yes 

      • Go to step  10

      No 

  10. (D64) CAN C BUS (-) CIRCUIT OPEN 
    Fig 7: Checking CAN C BUS (-) Circuit
    GC0117677Courtesy of CHRYSLER LLC
    1. Measure the resistance of the (D64) CAN C Bus (-) circuit between the TIPM connector and the appropriate terminal of the special tool #8815.

      Is the resistance below 5.0 ohms?

      Yes 

      No 

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