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Home >> Chrysler >> 2009 >> PT Cruiser Limited >> Repair and Diagnosis >> Accessories & Equipment >> Communication Devices >> Can Communication System - Non-DTC Diagnostics >> Diagnosis And Testing >> Diagnostic Can C (+) And/Or Diagnostic Can C (-) Circuits High >> Diagnostic Test

Diagnostic Test

  1. CHECK THE STATUS OF THE ERROR MESSAGE 
    NOTE: Ensure the vehicle being tested is a CAN BUS VEHICLE. If not, false error messages may be displayed.
    NOTE: Ensure the scan tool is updated to the latest software.
    1. With the scan tool, record the error message.
    2. Disconnect the scan tool from the DLC.
    3. Cycle the ignition from on to off 3 times.
    4. Turn the ignition on.

      Does the scan tool display this same error message?

      Yes 

      • Go to step  2

      No 

      • The conditions that caused this error message to set are not present at this time. Using the wiring diagram/schematic as a guide, inspect the wiring and connectors.
  2. DIAGNOSTIC CAN C CIRCUITS SHORTED TO VOLTAGE 
    Fig 1: TIPM C3 Harness Connector
    GC0117627Courtesy of CHRYSLER LLC
    1. Turn the ignition off.
    2. Disconnect the Totally Integrated Power Module C3 harness connector.
    3. Disconnect the scan tool from the DLC.
    4. Turn the ignition on.
    5. Measure the voltage of the Diagnostic CAN C circuits at the TIPM C3 harness connector.

      Is the voltage above 6.0 volts for either circuit?

      Yes 

      No