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Home >> Chrysler >> 2008 >> Crossfire 2D Convertible, Standard >> Repair and Diagnosis >> Accessories & Equipment >> Communication Devices >> Electronic Control Modules - Electrical Diagnostics >> Electronic Control Modules - Electrical Diagnostics >> DTC Troubleshooting >> *No Response From Power Top Control Module >> Diagnostic Test

Diagnostic Test

  1. 1) CHECK COMMUNICATION WITH OTHER MODULES 

    Turn the ignition on.

    Using the scan tool, attempt to communicate with the PCM.

    Is the scan tool able to communicate with the PCM? 

    Yes 

    1. Go to step  2).

    No 

    1. Perform *NO RESPONSE FROM ALL MODULES .
  2. 2) CHECK COMMUNICATION WITH OTHER MODULES ON SCI TRANSMIT CIRCUIT 

    With the ignition on.

    Using the scan tool, attempt to communicate with either the Instrument Cluster, A/C Heater Control Module, or Universal Garage Door Opener/Tire Pressure Monitor.

    Is the scan tool able to communicate with the module selected? 

    Yes 

    1. Go to step  3).

    No 

    1. Go to step  6).
  3. 3) FUSED IGNITION SWITCH OUTPUT CIRCUIT OPEN 
    Fig 1: Checking Fused Ignition Switch Output Circuit For Open
    GC0034942Courtesy of CHRYSLER LLC

    Turn the ignition off.

    Disconnect the Power Top Control Module harness connector.

    NOTE: Check connector - Clean/repair as necessary.

    Turn the ignition on.

    Measure the voltage of the Fused Ignition Switch Output circuit at the Power Top Control Module harness connector.

    Is the voltage above 10 volts? 

    Yes 

    1. Go to step  4).

    No 

    1. Repair the Fused Ignition Switch Output circuit for an open.
    2. Perform *BODY VERIFICATION TEST .
  4. 4) GROUND CIRCUIT OPEN 
    Fig 2: Checking Ground Circuit For Open
    GC0034943Courtesy of CHRYSLER LLC

    Turn the ignition off.

    Measure the resistance of the Ground circuit from the Power Top Control Module harness connector to ground.

    Is the resistance below 5.0 ohms? 

    Yes 

    1. Go to step  5).

    No 

    1. Repair the Ground circuit for an open.
    2. Perform *BODY VERIFICATION TEST .
  5. 5) SCI TRANSMIT CIRCUIT OPEN 
    Fig 3: Checking SCI Transmit Circuit For Open
    GC0034944Courtesy of CHRYSLER LLC

    With the ignition off.

    Measure the resistance of the SCI Transmit circuit from the Power Top Control Module harness connector to the DLC.

    Is the resistance below 5.0 ohms? 

    Yes 

    1. Replace the Power Top Control Module.
    2. Perform *BODY VERIFICATION TEST .

    No 

    1. Repair the SCI Transmit circuit for an open.
    2. Perform *BODY VERIFICATION TEST .
  6. 6) SCI TRANSMIT CIRCUIT SHORTED TO GROUND OR OPEN 
    Fig 4: Checking SCI Transmit Circuit For Short To Ground Or Open
    GC0034946Courtesy of CHRYSLER LLC

    Turn the ignition off.

    Measure the resistance between ground and the SCI Transmit circuit.

    Is the resistance above 100 kohms? 

    Yes 

    1. Repair the SCI Transmit circuit for an open.
    2. Perform *BODY VERIFICATION TEST .

    No 

    1. Repair the SCI Transmit circuit for a short to ground.
    2. Perform *BODY VERIFICATION TEST .
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