Operation CHARM: Car repair manuals for everyone.

Front Impact Severity Sensor

FRONT IMPACT SEVERITY SENSOR







Removal and Installation

WARNING:
- Always wear safety glasses when repairing an air bag supplemental restraint system (SRS) vehicle and when handling an air bag module. This will reduce the risk of injury in the event of an accidental deployment.
- Vehicle sensor orientation is critical for proper system operation. If a vehicle equipped with an air bag supplemental restraint system (SRS) is involved in a collision, inspect the sensor mounting bracket and wiring pigtail for deformation. Replace and properly position the sensor or any other damaged supplemental restraint system (SRS) components whether or not the air bag is deployed.
- To reduce the risk of personal injury, do not use any memory saver devices.


NOTE:
- The air bag warning lamp illuminates when the RCM fuse is removed and the ignition switch is ON. This is normal operation and does not indicate a supplemental restraint system (SRS) fault.
- The SRS must be fully operational and free of faults before releasing the vehicle to the customer.
- Repair is made by installing a new part only. If the new part does not correct the condition, install the original part and carry out the diagnostic procedure again.
- Front bumper removed for clarity.

1. Depower the system.







2. NOTE: The front impact severity sensor is mounted on the bottom of the hood latch support bracket.

Remove the pin-type retainers and lower the front lower splash shield to access the front impact severity sensor.

3. WARNING: The tightening torque of the air bag front impact severity sensor retaining nut is critical for correct system operation.

CAUTION: If the hood latch support bracket or weld stud are damaged in any way that would affect the way the front impact severity sensor mounts to its original manufactured position, a new hood latch support bracket must be installed.

NOTE:
- Note the position of the front impact severity sensor locator tabs to the hood latch support bracket alignment holes for installation.
- Make sure the hood latch support bracket and front impact severity sensor mating surfaces are clean and debris free.

Remove the front impact severity sensor nut.
- To install, tighten to 12 Nm (9 lb-ft)

4. Disconnect the electrical connector and remove the front impact severity sensor.
5. To install, reverse the removal procedure.
6. Repower the system.