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HOMESERVICE MANUALSJEEP2023GRAND CHEROKEE L LAREDO, AWDREPAIR AND DIAGNOSISTRANSMISSIONAUTOMATIC TRANS8HP50/850RE AUTOMATIC TRANSMISSION - DTCS P0219-00 TO P07B4-00DTC TROUBLESHOOTINGP061B-00-INTERNAL CONTROL MODULE TORQUE CALCULATION PERFORMANCEDIAGNOSTIC TEST
2023 Jeep Grand Cherokee L Laredo, AWD

Diagnostic Test

2023 Jeep Grand Cherokee L Laredo, AWDSECTION Diagnostic Test
  1. CHECK IF TRANSMISSION CONTROL MODULE (TCM) SOFTWARE UPDATE IS AVAILABLE 
    NOTE:

    Read Service Bulletins to determine if the software update is applicable to the customer complaint.

    1. With the scan tool, check if a TCM software update is available that may be related to the customer complaint.

      Is an update available?

      Yes 

      • Refer to  2.

      No 

      • Refer to  3.
  2. PROGRAM THE TCM 
    1. Perform the TCM PROGRAMMING PROCEDURE. Refer to TCM PROGRAMMING .
    2. Perform the TRANSMISSION VERIFICATION TEST. Refer to TRANSMISSION VERIFICATION TEST .

      Were you able to successfully program the TCM and pass the TRANSMISSION VERIFICATION TEST?

      Yes 

      • Test Complete.

      No 

      • Using the schematics as a guide, check the Transmission Control Module (TCM) connector and all related in-line connector terminals for corrosion, damage, or pushed out terminals. Pay particular attention to the power and ground circuits. If no problems are found, replace and program the TCM in accordance with the Service Information. Refer to MODULE, TRANSMISSION CONTROL (TCM), REMOVAL AND INSTALLATION .
      • Perform the TRANSMISSION VERIFICATION TEST. Refer to TRANSMISSION VERIFICATION TEST .
  3. READ AND RECORD DTCS AND ENVIRONMENTAL DATA - ERASE DTCS AND CHECK FOR DTC TO RETURN 
    1. With the scan tool, read DTCs in all Electronic Control Units (ECUs) and record on the repair order.
    2. With the scan tool, run a vehicle Scan Report, or record the Environmental Data related to the DTCs.
    3. With the scan tool, erase all DTCs.
    4. Turn the ignition off for a minimum of 10.0 seconds.
    5. Turn the ignition on.
    6. Using the recorded Environmental Data and the When Monitored Conditions above, operate the vehicle in the conditions that set the DTC.
    7. With the scan tool, read DTCs.

    Did the DTC return?

    Yes 

    • Using the schematics as a guide, check the TCM connector and all related in-line connector terminals for corrosion, damage, or pushed out terminals. Pay particular attention to the power and ground circuits. If no problems are found, replace and program the TCM in accordance with the Service Information. Refer to MODULE, TRANSMISSION CONTROL (TCM), REMOVAL AND INSTALLATION .
    • Perform the TRANSMISSION VERIFICATION TEST. Refer to TRANSMISSION VERIFICATION TEST .

    No 

RENDER: 1.0x

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • • You smell fuel, burning insulation, or see smoke.
  • • Brakes feel soft, pull hard to one side, or make grinding noises.
  • • The engine overheats, stalls repeatedly, or misfires under load.
  • • You are missing required tools, torque specs, or safe lifting equipment.
  • • You are not confident in the next step or safety outcome.