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Home >> Chrysler >> 2012 >> 300 C, 4WD >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 23 (Transmission Control Module (TCM) - DTCS P1D94 To U1479 - 8HP45 Automatic Transmission) >> Diagnosis And Testing >> P1DB8-Unintended Torque Applied While In Neutral >> Diagnostic Test

Diagnostic Test

WARNING: This page is about a different variant/trim than selected.
  1. CHECK FOR INCORRECT GEAR RATIO DTCS 
    1. With the scan tool, read TCM DTCs.

      Are any Incorrect Gear Ratio DTCs present?

      Yes 

      • Repair any Incorrect Gear Ratio DTCs before proceeding.
      • Refer to STANDARD PROCEDURE and perform the TRANSMISSION VERIFICATION TEST.

      No 

      • Go To  2.
  2. CHECK IF DTC IS CURRENT 
    NOTE:

    The Transmission Control Module stores under Environmental Data the transmission operating conditions when the DTC was set. Before clearing any DTCs, record all information pertaining to the DTC.

    1. With the scan tool, CLEAR transmission DTCs.
    2. Using the Environmental Data previously recorded, drive the vehicle and try to duplicate the condition in which the DTC set.

      Does the DTC reset?

      Yes 

      • Go To  3.

      No 

      • Go To  4.
  3. TRANSMISSION CONTROL MODULE ASSEMBLY (TCMA) 

    If there are no possible causes remaining, view repair.

    Repair 

    • Using the schematics as a guide, check the TCMA terminals for corrosion, damage or terminal push out. Pay particular attention to power and ground circuits. Check Service Information Tune-ups or Service Bulletins for possible causes that may apply. Connect the scan tool and clear the DTC. If the DTC returns, replace and program the TCMA in accordance to the Service Information. Refer to VALVE BODY, REMOVAL .
    • Refer to STANDARD PROCEDURE and perform the TRANSMISSION VERIFICATION TEST.
  4. INTERMITTENT 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 wiring and connectors while checking for any possible open or shorted circuits.
    4. Check for any Service Information Tune-ups or Technical Service Bulletins that may apply.

      Were any problems found?

      Yes 

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

      No 

      • Test Complete.