Air Bag Systems: Service and Repair

1. Check "AIR BAG" warning lamp operation
After turning ignition key to the ON position, "AIR BAG" warning lamp illuminates. The "AIR BAG" warning lamp will turn oft 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.
^ The warning lamp does not illuminate when the ignition switch is turned ON.
^ The warning lamp does not turn oft about 7 seconds after the ignition switch is turned ON.
^ The warning lamp turns oft about 7 seconds after the ignition switch is turned ON, but it turns on again or blinks.

2. Visually check SRS components
a. Crash zone sensor (4WD models).
^ Check crash zone sensor to ensure the arrow marks face the front of the vehicle.
^ Check body and sensor bracket for deformities and rust.
^ Check sensor case for dents, cracks, deformities and rust.
^ Check sensor harness for binding, connector for damage and terminals for deformities.

b. Diagnosis sensor unit
^ Check diagnosis sensor unit and bracket for dents, cracks and deformities.
^ Check connectors for damage and terminals for deformities.

c. Air bag module and steering wheel
^ Remove air bag module from steering wheel. Check harness cover and connectors for damage, terminals for deformities and harness for binding.
^ Install air bag module to steering wheel to check fit and alignment with the wheel.
^ Check steering wheel for excessive free play.

d. Spiral cable
^ Check spiral cable and combination switch for damage.
^ Check connectors and protective tape for damage.
^ Check steering wheel for noise, binding and heavy operation.

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

CAUTION: Replace previously used special bolts with new ones.