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.
CAUTION:
Electronic modules are sensitive to static electrical charges. If exposed to these charges, damage may result.
- Verify the customer concern.
- Visually inspect for obvious signs of electrical damage and system integrity.
Electrical - Fuses (refer to electrical guide)
- Wiring harness
- Correct engagement of electrical connectors
- Loose or corroded connections
- Routing of fibre optic harnesses
- Correct engagement of optical connectors
- Correct placement of optical connectors (ring order)
- Correct assembly of optical connectors (backout, etc)
- Damage to fibre (chafing, abrasion, kinking, cuts, etc)
- 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 check for diagnostic trouble codes (DTCs) and refer to the DTC Index .