Inspection And Verification

CAUTION: Diagnosis by substitution from a donor vehicle is NOT acceptable. Substitution of control modules does not guarantee confirmation of a fault, and may also cause additional faults in the vehicle being tested and/or the donor vehicle

NOTE: Check and rectify basic faults before beginning diagnostic routines involving pinpoint tests

Verify the customer concern
- If a road test is necessary make sure the vehicle is safe to do so

Visually inspect for obvious signs of mechanical damage

VISUAL INSPECTION DESCRIPTION

MECHANICAL	ELECTRICAL
Wheel rim and tire damage or runout Check all the driveshafts and halfshafts for damage including dents, cracks and excessive runout Check all the constant velocity joint gaiters for splits, damage and security Check all the driveshafts and halfshafts for correct alignment Check the driveshaft mounting bolts security Check all the driveshaft and halfshaft joints for excessive movement Check the rear driveshaft centre support bearing for security, damage and excessive wear Check the front and rear differential mounting bolts and bushes for wear, damage and security Check the front and rear differentials for oil leaks	Power supply Fuses/relays Damaged, loose or corroded connector(s) Damage to wiring loom/incorrect location, stretched or taught Rear differential control module Controller area network circuits Sensors

MECHANICAL

ELECTRICAL

Wheel rim and tire damage or runout
Check all the driveshafts and halfshafts for damage including dents, cracks and excessive runout
Check all the constant velocity joint gaiters for splits, damage and security
Check all the driveshafts and halfshafts for correct alignment
Check the driveshaft mounting bolts security
Check all the driveshaft and halfshaft joints for excessive movement
Check the rear driveshaft centre support bearing for security, damage and excessive wear
Check the front and rear differential mounting bolts and bushes for wear, damage and security
Check the front and rear differentials for oil leaks

Power supply
Fuses/relays
Damaged, loose or corroded connector(s)
Damage to wiring loom/incorrect location, stretched or taught
Rear differential control module
Controller area network circuits
Sensors

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 the symptom chart, alternatively check for Diagnostic Trouble Code(s) (DTC)s and refer to the DTC index