Inspection and Verification
- Verify the customer concern.
- Visually inspect for obvious signs of mechanical or electrical damage.
- If an obvious cause for an observed or reported concern is found, correct the cause (if possible) before proceeding to the next step
- If the cause is not visually evident, verify the symptom and refer to Symptom Chart: Four-Wheel Drive Systems.
Visual Inspection Chart
| Mechanical | Electrical |
|---|---|
| Halfshafts IWEs Driveshaft and U-joints Vacuum leaks Fluid leaks Matching tire sizes Transfer case |
BJB fuse 13 (10A)fuse 29 (10A) (IWE)fuse 63 (15A)fuse 71 (15A) BCM (body control module) fuse 32 (10A) (ATCM-FFSM) Wiring, terminals or connectors 4X4 switch module Transfer case clutch field coil IWE solenoid Transfer case shift motor |