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
- Visually inspect for obvious signs of damage and system integrityVISUAL INSPECTION
MECHANICAL ELECTRICAL - Check for the installation of non-standard accessories which may affect or obstruct the function of the supplemental restraint system
- Check the condition of trim, etc at the supplemental restraint system components
- Sensor(s)
- Pretensioner(s)
- Air bag module(s)
- Occupant detection/classification sensors
- Seat position sensor
- Fuse(s)
- Wiring harness
- Battery condition, state of charge
- Ensure all electrical connector(s) are engaged correctly on the air bag circuits
- Ensure the restraints control module is correctly installed
- Warning lamp bulb(s)
- Impact sensor(s)
- Buckle sensor(s)
- Pretensioner(s)
- Air bag module(s)
- Air bag deactivation switch
- Air bag deactivation warning lamp
- Occupant detection/classification sensors
- Seat position sensor
- Clockspring
- If an obvious cause for an observed or reported concern is found, correct the cause (if possible) before proceeding to the next step
(Faults in supplemental restraint system harnesses would normally mean replacement of the relevant harness. Supplemental restraint system harness repairs are not recommended)
- If the cause is not visually evident, check for diagnostic trouble codes (DTCs) and refer to the DTC INDEX .