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Home >> Chrysler >> 2009 >> PT Cruiser Limited >> Repair and Diagnosis >> Transmission >> Transmission Control Systems >> (Totally Integrated Power Module (TIPM) - Electrical Diagnostics) >> DTC Troubleshooting >> P128C-TCM Power Control Circuit 2 High - 41TE NGC >> Diagnostic Test

Diagnostic Test

  1. CHECK IF THE DTC IS ACTIVE 
    1. Ignition on, engine not running.
    2. With the scan tool, read DTCs.

      Is the status Active for this DTC?

      Yes 

      • Go to step  2

      No 

      • Go to step  3
  2. CHECK THE (T16) TRANSMISSION CONTROL OUTPUT CIRCUIT FOR A SHORT TO VOLTAGE 
    Fig 1: Checking Transmission Control Output Circuit
    GC0117404Courtesy of CHRYSLER LLC
    1. Turn the ignition off to the lock position.
    2. Disconnect the TIPM C10 harness connector.
    3. Disconnect the PCM C4 harness connector and install Miller tool #8815.
      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 the PCM Pinout Box 8815 to perform diagnosis.
    4. Measure the voltage of the (T16) Transmission Control Output circuit.

      Is the voltage above 0.5 volts?

      Yes 

      No 

  3. INTERMITTENT WIRING AND CONNECTORS 
    1. Using the wiring diagram/schematic as a guide, inspect the wiring and connectors.
    2. While monitoring the scan tool data relative to this circuit, wiggle test the wiring and connectors.
    3. Look for the data to change or for the DTC to reset during the wiggle test.

      Were any problems found?

      Yes 

      No 

      • Test complete.