Diagnostic Test

2014 Jeep Grand Cherokee Laredo, AWDSECTION Diagnostic Test
WARNING: This page is about a different variant/trim than selected.

ADCM VERIFICATION TEST 

  1. Turn the ignition off.
  2. Connect all previously disconnected components and connectors.
  3. Verify all accessories are turned off and the battery is fully charged.
  4. Verify that the ignition is on, with the scan tool, erase all Diagnostic Trouble Codes (DTCs) from All modules. Start the engine and allow it to run for two minutes and fully operate the system that was indicating the failure.
  5. Turn the ignition off and wait five seconds. Turn the ignition on and using the scan tool, read DTCs from all modules.
  6. If any Diagnostic Trouble Codes are present, refer to DIAGNOSIS AND TESTING  and perform the diagnostic procedure.
  7. If there are no DTCs present after turning ignition on, road test the vehicle for at least five minutes.
    • Test drive the vehicle by turning the vehicle left or right in a curving manner at a speed above 25 km/h (15 mph).
  8. Again, with the scan tool read DTCs. If any DTCs are present, refer to DIAGNOSIS AND TESTING  for the diagnostic procedure and troubleshoot the new or recurring DTC.
  9. If there are no Diagnostic Trouble Codes (DTCs) present, and the customer's concern can no longer be duplicated, the repair is complete.

    Are any DTCs present or is the original concern still present?

    Yes 

    • Repair is not complete, perform the appropriate diagnostic procedure. Refer to DIAGNOSIS AND TESTING .

    No 

    • Repair is complete.
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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.