Air Bag Systems: Service and Repair

Maintenance Items:

1. Check "AIR BAG" warning lamp operation
After turning ignition switch ON, "AIR BAG" warning lamp illuminates. The "AIR BAG" warning lamp will turn off after about 7 seconds if no malfunction is detected.
If any of the following air bag warning lamp conditions occur, immediately check the air bag system.

Refer to AIR BAG SYSTEMS / TESTING AND INSPECTION / NON-TROUBLE CODE DIAGNOSTIC PROCEDURES.
[1][2]Component Tests and General Diagnostics

- The warning lamp does not illuminate when the ignition switch is turned ON.
- The warning lamp does not turn off about 7 seconds after the ignition switch is turned ON.
- The warning lamp blinks after illuminating for about 7 seconds after the ignition switch is turned ON.

2. Visually check SRS components
A. Air bag diagnosis sensor unit
- Check air bag diagnosis sensor unit and bracket for dents, cracks and deformities.
- Check connectors for damage and terminals for deformities.

B. Air bag modules, steering wheel and instrument panel
- Remove driver air bag module from steering wheel. Check harness cover and connectors for damage, terminals for deformities and harness for binding.
- Install driver air bag module to steering wheel to check fit or alignment with the wheel.
- Check steering wheel for excessive free play.
- Remove passenger air bag module. Check harness cover and connectors for damage, terminals for deformities and harness for binding. Check the bracket for deformities and rust.
- Install passenger air bag module to instrument panel to check fit or alignment with the instrument panel.

C. Spiral cable
- Check spiral cable for dents, cracks and deformities.
- Check connectors and protective tape for damage.
- Check steering wheel for noise, binding and heavy operation.

D. Main harness and air bag harness
- Check connectors for poor connections, damage, and terminals for deformities.
- Check harnesses for binding, chafing and cuts.

CAUTION: Replace previously used special bolts, nuts and ground nut with new ones.