Diagnostic Test

POWERTRAIN DTCS PRESENT
1. Ignition on.
2. With the scan tool, read DTCs in the Powertrain Control Module.
  Are there any active DTCs present?
  
  Yes
  - Refer to the symptom list and perform the applicable diagnostic procedure.
  - Perform TRANSFER CASE VERIFICATION TEST. See DTC-Based Diagnostics/MODULE, Final Drive Control (FDCM) - Standard Procedure .
  No
  - Replace the Final Drive Control Module (FDCM) in accordance with the Service Information.
  - Perform TRANSFER CASE VERIFICATION TEST. See DTC-Based Diagnostics/MODULE, Final Drive Control (FDCM) - Standard Procedure .