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Diagnostic Test

1) FRONT CONTROL MODULE DTCS PRESENT
Ignition on, engine not running.

With the scan tool, read DTCs in the Front Control Module.

Are there any DTCs present?

Yes
1. Refer to the appropriate symptom list and perform the applicable diagnostic procedure.
2. Perform TRANSFER CASE VERIFICATION TEST .
No
1. Replace the Final Drive Control Module in accordance with the Service Information.
2. Perform TRANSFER CASE VERIFICATION TEST .