Inspection And Verification
WARNING:
Before carrying out a road test, make sure the vehicle is safe to do so. Failure to follow this instruction may result in personal injury
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
- Verify the customer concern
- Visually inspect for obvious signs of mechanical or electrical damage
Visual Inspection
MECHANICAL ELECTRICAL - Coil springs
- Shock absorbers
- Accelerometer(s) installation
- Height sensor(s) installation
- Suspension air supply unit
- Solenoid valve block
- Battery
- Fuse(s)
- Wiring harness physical damage or water ingress
- Loose or corroded electrical connectors
- CAN circuits
- Accelerometer(s)
- Height sensor(s)
- Integrated suspension control module
- 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 the system for any logged diagnostic trouble codes (DTCs) and refer to the DTC INDEX .