Post-Collision Diagnosis & Repair

WHEN AIR BAG DEPLOYS IN A COLLISION
1. Replace the following parts with new ones.
- SRS air bag control unit (SRS-ECU).
- Air bag modules.

2. Check the following parts, and replace if any malfunctions are present.
- Clock spring.
- Steering wheel, steering column and intermediate joint
(1) Check wiring harness (built into steering wheel) and connectors for damage, and terminals for deformation.
(2) Install air bag module to check fit or alignment with steering wheel.
(3) Check steering wheel for noise, binds or difficult operation and excessive free play.

3. Check harnesses for binding, connectors for damage, poor connections, and terminals for deformation.

WHEN AIR BAG DOES NOT DEPLOY IN LOW-SPEED COLLISION
Check the SRS components.

If the SRS components are showing any visible damage such as dents, cracks, or deformation, replace them with new ones. Concerning parts removed for inspection, replacement with new parts and cautionary points for working, refer to appropriate COMPONENT SERVICE.

Service Precautions:

SRS Air Bag Control Unit (SRS-ECU)
1. Check SRS-ECU case and brackets for dents, cracks or deformation.
2. Check connector for damage, and terminals for deformation.









Air Bag Module
1. Check pad cover for dents, cracks or deformation.
2. Check for connector damage, deformed terminal, and binding harness.
3. Check air bag inflator case for dents, cracks or deformation.
4. Install air bag module to steering wheel to check fit or alignment with the steering wheel.






Clock Spring
1. Check clock spring connectors and protective tubes for damage, and terminals for deformation.
2. Visually check the case for damage.


Steering Wheel, Steering Column and Intermediate Joint
1. Check wiring harness (built into steering wheel) and connectors for damage, and terminals for deformation.
2. Install air bag module to check fit or alignment with steering wheel.
3. Check steering wheel for noise, binding, difficult operation, or excessive free play.

Harness Connector (Body and Front Wiring Harness)
Check for binding harness, connector damage, poor connections and deformed terminals.