Accident With or Without Air Bag Deployment -- Component Inspections
CAUTION: 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.
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:
| Perform the steering column accident damage checking procedures. Refer
to Steering. |
• | Inflatable restraint front end discriminating sensor |
| Determine the need for replacement based on the following Sensor Replacement
Guidelines. |
| Inspect the knee bolsters for bending, twisting, buckling, or any other
type of damage. |
• | IP brackets, braces, etc. |
| Inspect for bending, twisting, buckling, or any other type of damage. |
• | IP steering column reinforcement plate |
| Inspect for bending, twisting, buckling, or any other type of damage. |
| Perform the seat belt operational and functional checks. Refer to
Seat Belt Checks
in Seat Belts. |
Accident With Air Bag Deployment -- Component Replacement and
Inspections
After a collision involving air bag deployment, replace the following
components. If you detect any damage to the mounting points or mounting hardware,
repair or replace the mounting points and mounting hardware as needed:
• | Inflatable restraint IP (inflator) module |
• | Inflatable restraint steering wheel (inflator) module |
• | Inflatable restraint sensing and diagnostic module (SDM) |
After a collision involving air bag deployment, inspect the inflatable
restraint steering wheel module coil and the coil wiring pigtail for melting,
scorching, or other damage due to excessive heat. Perform this component inspection
in addition to the inspections indicated above in Accident With or Without
Air Bag Deployment. 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.
Sensor Replacement Guidelines
The SIR sensor replacement policy requires replacing the sensors in
the area of accident damage. The area of accident damage is defined as the
portion of the vehicle that is crushed, bent, or damaged due to a collision.
If the vehicle has a SIR sensor mounted forward of the radiator, replace the
SIR sensor.
• | Replace the sensor even if the air bags have not deployed. |
• | Replace the sensor even if the sensor appears to be undamaged. |
Sensor damage which is not visible, such as slight bending of the mounting
bracket or cuts in the wire insulation, may cause improper operation of the
SIR sensing system. Do not try to determine whether the sensor is undamaged,
replace the sensor. Also, replace the sensor if a Diagnostic Trouble Code
(DTC) table indicates a malfunctioning sensor.