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 checked and/or the donor vehicle.
NOTE:
Check and rectify basic faults before beginning diagnostic routines involving pinpoint tests.
- Verify the customer concern.
- Visually inspect for obvious signs of mechanical or electrical damage.VISUAL INSPECTION
Mechanical Electrical - Windshield and rear window for damage or contamination e.g. road film or general residue deposits
- Wiper blades, arms and linkage for wear, security, damage and freedom of movement
- Windshield/Rear window/Headlamp washer fluid level
- Washer pipes and jets for leaks, restrictions and damage
- Battery condition and state of charge
- Fusible links
- Fuses
- Relays
- Electrical connections
- Front and rear wiper motors
- Wiper switch
- Washer pumps
- Rain/light sensor
- Heated front washer jets
- Ignition switch
- Light switch
- Ambient air temperature sensor
- Central Junction Box (CJB)
- Battery Junction Box (BOB)
- Anti-lock Brake System (ABS) control module
- Automatic Temperature Control Module (ATC)
- Instrument Cluster (IC) module
- Controller Area Network (CAN) circuits
- 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 Codes (DTCs) and refer to the DTC Index.