Diagnostic Test

ACTIVE DTC
NOTE: You must diagnose any Solenoid circuit (Low or High) DTCs first if set along with this DTC before continuing.
1. Ignition on, engine not running.
2. With the scan tool, read DTCs.
  Is the DTC active at this time?
  
  Yes
  - Go to step 2
  No
  - Go to step 3
WIRING HARNESS INSPECTION
1. Inspect the wiring harness from both solenoids to the FDCM. Ensure that the harness has routed correctly.
2. Inspect the FDCM harness connector and Differential Solenoid connectors. Ensure the terminals are clean and no damage is present.
  Was the wiring harness and connectors OK?
  
  Yes
  - Replace the FDCM in accordance with the Service Information.
  - Perform the FDCM VERIFICATION TEST. See DTC-Based Diagnostics/MODULE, Final Drive Control (FDCM) - Standard Procedure .
  No
  - Repair as necessary.
  - Perform the FDCM VERIFICATION TEST. See DTC-Based Diagnostics/MODULE, Final Drive Control (FDCM) - Standard Procedure .
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 test the wiring harness and connectors while checking for shorted and open circuits.
4. Using the scan tool, monitor the data related to this circuit while performing the wiggle test. Look for the data to change or for the DTC to reset.
  Were there any problems found?
  
  Yes
  - Repair as necessary.
  - Perform the FDCM VERIFICATION TEST. See DTC-Based Diagnostics/MODULE, Final Drive Control (FDCM) - Standard Procedure .
  No
  - Test Complete. The conditions that originally set the code are no longer present.