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Home >> Chrysler >> 2009 >> PT Cruiser Limited >> Repair and Diagnosis >> External Pages >> Different car >> Section 71 (DTCS P128D To U1107 (TIPM)) >> P128E-TCM Power Control Circuit 2 OVERCURRENT >> Diagnostic Test

Diagnostic Test

WARNING: This page is about a different car, the 2009 Dodge Caliber. However, it is still accessible from the selected car via links, so may be relevant.
  1. CHECK IF THE DTC IS ACTIVE 
    1. Ignition on, engine not running.
    2. With a scan tool, read TIPM DTCs.

      Is the DTC active at this time?

      Yes 

      • Go to step  2

      No 

      • Go to step  4
  2. CHECK IF THE DTC IS ACTIVE 
    1. Ignition on, engine not running.
    2. With a scan tool, read Transmission DTCs.

      Are there any Input or Output Speed Sensor or Transmission Range Sensor (TRS) DTCs present?

      Yes 

      No 

      • Go to step  3
  3. CHECK THE TCM 
    1. Disconnect the amp meter from the TIPM C10 harness connector and battery positive.
    2. Disconnect the TCM C1 harness connector.
    3. Connect the positive probe of an ammeter to battery positive and connect the negative probe to the (T16) Transmission Control Output circuit in the TIPM C10 harness connector.
    4. Read the amperage on the ammeter.

      Does the amperage read below 2.0 amps?

      Yes 

      • Using the schematics as a guide, check the Transmission Control Module (TCM) terminals for corrosion, damage, or terminal push out. Pay particular attention to all power and ground circuits. If no problems are found, replace the TCM in accordance with the Service Information.
      • Perform the CVT VERIFICATION TEST. Refer to DTC-Based Diagnostics/MODULE, Transmission Control (TCM) - Standard Procedure .

      No 

  4. CHECK THE WIRING AND CONNECTORS 
    1. The conditions necessary to set this DTC are not present at this time.
    2. Using the schematics as a guide, inspect the wiring and connectors specific to this circuit.
    3. Wiggle the wires while checking for shorted and open circuits.

      Were there any problems found?

      Yes 

      No 

      • Test Complete.