Impact Sensor: Service and Repair

INFLATABLE RESTRAINT FRONT END DISCRIMINATING SENSOR REPLACEMENT

REMOVAL PROCEDURE




1. Disable the SIR system. Refer to SIR Disabling and Enabling Zone 1.

CAUTION: Refer to SIR Caution in Service Precautions.

2. Raise the vehicle. Refer to Vehicle Lifting.
3. Disconnect the inflatable restraint front end discriminating sensor harness connector located at the top of the frame (1).
4. Remove the bolts (2).
5. Remove the inflatable restraint front end discriminating sensor (3) from the cradle.

INSTALLATION PROCEDURE
1. Remove any dirt, grease, or other impurities from the mounting surface.




2. Install the front end discriminating sensor horizontally to the top of the frame.
3. Point the arrow on the sensor toward the front of the vehicle.
4. Install the inflatable restraint front end discriminating sensor mounting fasteners (2).

NOTE: Refer to Fastener Notice in Service Precautions.

Tighten fastener to 6.5 N.m (58 lb in).

5. Perform the following steps in order to complete the first fastener repair:
1. Remove and discard the improperly installed rivet.
2. Reattach the sensor with a new rivet.

IMPORTANT: The following procedures should be utilized in the event that sensor mounting holes or fasteners are damaged to the extent that the sensor may no longer be properly mounted.

6. Perform the following steps, if needed, in order to complete a second fastener repair:
1. Remove the improperly installed rivet.
2. Enlarge the mounting holes in the lower radiator support to 9.0 mm (0.35 in).
3. Insert and properly seat the rivnut.
4. Install the screw to the sensor.

Tighten fasteners to 6.5 N.m (58 lb in).

7. Connect the inflatable restraint front end discriminating sensor harness connector to the sensor.
8. Lower the vehicle. Refer to Vehicle Lifting.
9. Enable the SIR system. Refer to SIR Disabling and Enabling Zone 1.