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HOMESERVICE MANUALSJEEP2009COMMANDER OVERLAND, RWDREPAIR AND DIAGNOSISTRANSMISSIONTRANSFER CASE(FINAL DRIVE CONTROL MODULE (FDCM) - ELECTRICAL DIAGNOSTICS)STANDARD PROCEDUREFDCM VERIFICATION TESTDIAGNOSTIC TEST
2009 Jeep Commander Overland, RWD

Diagnostic Test

2009 Jeep Commander Overland, RWDSECTION Diagnostic Test
  1. PERFORM FDCM VERIFICATION TEST 
    NOTE: If the SKIM, PCM or FCM was replaced, refer to the appropriate service information for proper programming procedures.
    1. Disconnect all jumper wires and reconnect all previously disconnected components and connectors.
    2. Ensure that all accessories are turned off.
    3. Ensure that the battery is fully charged.
    4. If the FDCM was replaced as part of the repair you must program the new FDCM using the scan tool.
    5. With the scan tool, record and erase all DTC(s) from the FDCM
    6. Start and run the engine for 2 minutes while operating all functions of the system that caused the original concern.
    7. Turn the ignition off, wait 5 seconds, then turn the ignition on. Using the scan tool, read DTC(s) from the FDCM.

    Are any FDCM DTC(s) present or is the original condition still present?

    Yes 

    No 

    • The repair is complete.
RENDER: 1.0x

NO RELATED

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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.