For 1990-2009 cars

### Accident With or Without Air Bag Deployment - Component Inspections

Warning: Proper operation of the Supplemental Inflatable Restraint (SIR) sensing system requires that any repairs to the vehicle structure return the vehicle structure to the original production configuration. Not properly repairing the vehicle structure could cause non-deployment of the air bag(s) in a frontal collision or deployment of the air bag(s) for conditions less severe than intended.

Warning: Proper operation of the Supplemental Inflatable Restraint (SIR) sensing system requires that any repairs to the vehicle structure return the vehicle structure to the original production configuration. Not properly repairing the vehicle structure could cause non-deployment of the side impact air bag(s) in a side impact collision or deployment of the side impact air bag(s) for conditions less severe than intended.

After any collision, inspect the following components as indicated. If you detect any damage, replace the component. If you detect any damage to the mounting points or mounting hardware, repair the component or replace the hardware as needed.

• | The steering column--Perform the steering column accident damage checking procedures. Refer to Steering Column Accident Damage Inspection.

• | The instrument panel (I/P) knee bolsters and mounting points--Inspect the knee bolsters for bending, twisting, buckling, or any other type of damage.

• | The I/P brackets, braces, etc.--Inspect for bending, twisting, buckling, or any other type of damage.

• | The seat belts--Perform the seat belt operational and functional checks. Refer to Repairs and Inspections Required After a Collision.

• | The I/P cross car beam--Inspect for bending, twisting, buckling, or any other type of damage.

• | The I/P mounting points and brackets--Inspect for bending, twisting, buckling, or any other type of damage.

• | The seats and seat mounting points--Inspect for bending, twisting, buckling, or any other type of damage.

• | Passenger seat bottom equipped with Passenger Presence System (PPS)--Check for any DTCs or problems that may cause the PPS not to function properly.

### Accident With Frontal Air Bag Deployment - Component Replacement and Inspections

After a collision involving air bag deployment, replace the following components:

Note: The front passenger seat is equipped with a PPS, which detects an occupant. If the requirements for disabling the I/P air bag are met then the PPS will communicate with the SDM to disable/turn off the I/P air bag, even in a accident. For more information on the PPS refer to SIR System Description and Operation.

• | The inflatable restraint I/P module, if deployed and after performing the necessary inspections listed above

• | The inflatable restraint steering wheel module

• | The inflatable restraint sensing and diagnostic module (SDM)

• | The inflatable restraint front end sensors

• | The inflatable restraint seat belt retractor pretensioners

Perform additional inspections on the following components:

• | Steering wheel module coil and the coil wiring pigtail--Inspect for melting, scorching, or other damage due to excessive heat.

• | Mounting points or mounting hardware for the I/P module, steering wheel module, SDM, and pretensioners--Inspect for any damage and repair or replace each component as needed.

### Sensor Replacement Guidelines

The front end sensors replacement policy requires replacing sensors in the area of accident damage. The area of accident damage is defined as the portion of the vehicle which is crushed, bent, or damaged due to a collision. An example of this would be a moderate collision where the front of the vehicle impacts a tree. If the vehicle has an SIR sensor mounted forward of the radiator, it must be replaced.

• | Replace the sensor whether or not the air bags have deployed.

• | Replace the sensor even if it appears to be undamaged.

Sensor damage which is not visible, such as slight bending of the mounting bracket or cuts in the wire insulation, can cause improper operation of the SIR system. Do not try to determine whether the sensor is undamaged, replace the sensor. Also, if you follow a diagnostic trouble code (DTC) table and a malfunctioning sensor is indicated, replace the sensor.