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Home >> Dodge and Ram >> 2012 >> Caliber SXT Plus, Automatic CVT Trans >> Repair and Diagnosis >> Transmission >> Transmission Control Systems >> (Transmission Control Module (TCM) - Electrical Diagnostics) >> DTC Troubleshooting >> P161B-Battery Disconnect / TCM Internal >> Diagnostic Test
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Diagnostic Test

  1. CHECK TO SEE IF THE DTC IS ACTIVE 
    1. With the scan tool, read Transmission DTCs.

      Is the status Active for P161B?

      Yes 

      • Go To  3.

      No 

      • Go To  2.
  2. CHECK FOR OTHER DTCS 
    1. With the scan tool, read Transmission DTCs.

      Is the status Active for P0602 also?

      Yes 

      • Refer to DTC INDEX and perform the appropriate diagnostic procedure.

      No 

      • Go To  3.
  3. CHECK THE TCM 

    Has the TCM been flashed, a new TCM installed or the battery or TCM disconnected with the ignition in the On or Accessory position?

    Yes 

    • This is a normal condition.

      Cycle the ignition off for 4 seconds and turn the ignition back on. Erase DTCs and cycle the ignition off again for 4 seconds and turn the ignition back on. Read TCM DTCs. If the DTC resets and remains active - Go To  4.

      If the DTC does not reset refer to STANDARD PROCEDURE  and perform the CVT TRANSMISSION VERIFICATION TEST.

    No 

    • 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.
      • NOTE:

      A loss of the TCM Fused B(+), TCM ground, and/or the Transmission Control Output circuits can cause this fault to set.

    • Check for any Service Bulletins for possible causes that may apply. If no problems are found, replace and program the TCM in accordance with the Service Information.
    • Refer to STANDARD PROCEDURE  and perform the CVT TRANSMISSION VERIFICATION TEST.
  4. CHECK IF THE RIGHT PART NUMBER IS USED 
    1. With the scan tool, check the TCM part number and compare it to the vehicle configuration.

      Does the controller have the right part number?

      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.
        • NOTE:

        A loss of the TCM Fused B(+), TCM ground, and/or the Transmission Control Output circuits can cause this fault to set.

      • Check for any Service Bulletins for possible causes that may apply. If no problems are found, replace and program the TCM in accordance with the Service Information.
      • Refer to STANDARD PROCEDURE  and perform the CVT TRANSMISSION VERIFICATION TEST.

      No 

      • Do to the configuration mismatch the controller will need to be replaced with the proper part number for the configuration of the vehicle. Replace and program the TCM in accordance with the Service Information.
      • Refer to STANDARD PROCEDURE  and perform the CVT TRANSMISSION VERIFICATION TEST.
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