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Home >> Chrysler >> 2011 >> 300 C, RWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 431 (Powertrain Control Module (Pcm) - Electrical Diagnostics - 68RFE Automatic Transmission - 2500 Hd & 3500) >> Diagnosis And Testing >> P0882-TCM Power Input Low >> Diagnostic Test

Diagnostic Test

WARNING: This page is about a different car, the 2013 RAM 3500 HD and 2013 RAM 2500 HD. However, it is still accessible from the selected car via links, so may be relevant.
  1. CHECK IF THE DTC IS CURRENT 
    1. With the scan tool, read DTCs.

      Is the status Active or is the Starts Since Set counter 0 for this DTC?

      Yes 

      • Go To  2

      No 

      • Go To  9
  2. CHECK FOR BLOWN FUSE 
    1. Turn the ignition OFF.
    2. Using the wiring information, check the fuse for the internal Transmission relay.

      Was the fuse blown?

      Yes 

      • Repair the (T16) Transmission Control Output circuit for a short to ground.
      • Perform the TRANSMISSION VERIFICATION TEST. Refer to STANDARD PROCEDURE  .

      No 

      • Go To  3
  3. CHECK THE TRANSMISSION CONTROL OUTPUT 
    1. Remove the Starter Relay from the PDC.
      CAUTION:

      Removal of the Starter Relay will prevent the vehicle from being started in gear.

      WARNING:

      The Starter Relay must be removed. Failure to do so can result in possible serious or fatal injury.

    2. Install Transmission Simulator (special tool #8333B, Simulator, Transmission).
    3. Ignition ON, Engine Not Running.

      Does the (special tool #8333B, Simulator, Transmission) power on?

      Yes 

      • Go To  7

      No 

      • Go To  4
  4. CHECK THE (T15) TRANSMISSION CONTROL AND PDC 
    1. Turn the ignition OFF.
    2. Disconnect the PCM C2 harness connector.
    3. Using a fused jumper wire or 12-volt test light connected to 12-volts, jumper the (T15) Transmission Control circuit on the appropriate terminal of the PCM C2 harness connector to actuate the internal transmission relay in the PDC.
    4. Ignition ON, Engine Not Running.

      Does the (special tool #8333B, Simulator, Transmission) power on?

      Yes 

      • Check the (T15) Transmission Control circuit connection at the PCM C2 connector. If no trouble is found and using the schematics as a guide, check the Powertrain Control Module (PCM) terminals for corrosion, damage or terminal push out. Pay particular attention to all power and ground circuits. If no problems are found, replace and program the PCM in accordance with the Service Information. With the scan tool, perform a Quick Learn.
      • Perform the TRANSMISSION VERIFICATION TEST. Refer to STANDARD PROCEDURE  .

      No 

      • Go To  5
  5. VERIFY PDC OPERATION 
    1. Using a fused jumper wire or 12-volt test light connected to 12-volts, momentarily jumper the (T15) Transmission Control circuit on the appropriate terminal of the PCM C2 harness connector several times to actuate the internal transmission relay in the PDC.

      Can the PDC be heard clicking when the jumping the (T15) Transmission Control circuit?

      Yes 

      • Go To  8

      No 

      • Go To  6
  6. CHECK THE (T15) TRANSMISSION CONTROL CIRCUIT FOR AN OPEN 
    1. Disconnect the PDC C3 harness connector.
    2. Measure the resistance of the (T15) Transmission Control circuit between the PDC C3 harness connector and the appropriate terminal of the PCM C2 harness connector.

      Is the resistance above 5.0 Ohms?

      Yes 

      • Repair the (T15) Transmission Control circuit for an open.
      • Perform the TRANSMISSION VERIFICATION TEST. Refer to STANDARD PROCEDURE  .

      No 

      • Using the schematics as a guide, check the Power Distribution Center (PDC) terminals for corrosion, damage or terminal push out. Pay particular attention to all power and ground circuits. If no problems are found, replace the PDC in accordance with the Service Information.
      • Perform the TRANSMISSION VERIFICATION TEST. Refer to STANDARD PROCEDURE  .
  7. CHECK THE (T16) TRANSMISSION CONTROL OUTPUT CIRCUIT BETWEEN THE PDC AND PCM 
    1. Using a fused jumper wire or 12-volt test light connected to 12-volts, jumper the (T15) Transmission Control circuit on the appropriate terminal of the PCM C2 harness connector to actuate the internal transmission relay in the PDC.
    2. Using a 12-volt test light connected to ground, check all the (T16) Transmission Control Output circuits at the appropriate terminals of the PCM C2 harness connector.
      NOTE:

      The (T16) Transmission Control Output circuit branches off to both the Transmission Solenoid/TRS Assembly and PCM.

      NOTE:

      The test light must illuminate brightly. Compare the brightness to that of a direct connection to the battery.

      Does the test light illuminate brightly for the (T16) Transmission Control Output circuits?

      Yes 

      • Using the schematics as a guide, check the Powertrain Control Module (PCM) terminals for corrosion, damage or terminal push out. Pay particular attention to all power and ground circuits. If no problems are found, replace and program the PCM in accordance with the Service Information. With the scan tool, perform a Quick Learn.
      • Perform the TRANSMISSION VERIFICATION TEST. Refer to STANDARD PROCEDURE  .

      No 

      • Repair the (T16) Transmission Control circuit for an open or high resistance.
      • Perform the TRANSMISSION VERIFICATION TEST. Refer to STANDARD PROCEDURE  .
  8. CHECK THE (T16) TRANSMISSION CONTROL OUTPUT CIRCUIT 
    1. Disconnect the transmission simulator (special tool #8333B, Simulator, Transmission).
    2. Disconnect the PDC C3 harness connector.
      NOTE:

      The (T16) Transmission Control Output circuit branches off to both the Transmission Solenoid/TRS Assembly and PCM.

    3. Measure the resistance of the (T16) Transmission Control Output circuit between the PDC C3 harness connector, the Transmission Solenoid/TRS Assembly, and the appropriate terminal of the PCM C2 harness connector.

      Is the resistance above 5.0 Ohms?

      Yes 

      • Repair the (T16) Transmission Control circuit for an open or high resistance.
      • Perform the TRANSMISSION VERIFICATION TEST. Refer to STANDARD PROCEDURE  .

      No 

      • Using the schematics as a guide, check the Power Distribution Center (PDC) terminals for corrosion, damage or terminal push out. Pay particular attention to all power and ground circuits. If no problems are found, replace the PDC in accordance with the Service Information.
      • Perform the TRANSMISSION VERIFICATION TEST. Refer to STANDARD PROCEDURE  .
  9. CHECK 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.
    4. With the scan tool, check the Event Data to help identify the conditions in which the DTC set.

      Where any problems found?

      Yes 

      • Repair as necessary.
      • Perform the TRANSMISSION VERIFICATION TEST. Refer to STANDARD PROCEDURE  .

      No 

      • Test Complete.
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