Inflatable Restraint Steering Wheel Module Coil Centering

Fig 1: View Of Block Tooth Of Steering Shaft Assembly In 12 O'clock Position

Courtesy of GENERAL MOTORS CORP.

NOTE: The new SIR coil assembly will be centered. Improper alignment of the SIR coil assembly may damage the unit, causing an inflatable restraint malfunction.

Verify the following conditions before centering the SIR coil:
- The wheels on the vehicle are straight ahead.
- The block tooth and the centering mark (1) of the steering shaft assembly is in the 12 o'clock position.

Fig 2: Holding SIR Coil With Face Up

Courtesy of GENERAL MOTORS CORP.

Hold the SIR coil with the face up (1) by the casing (2).
1. Slowly turn the coil hub clockwise (3) until the coil ribbon stops.
2. Rotate the coil hub slowly, counterclockwise (4) 2.5 revolutions.

Fig 3: Verifying Ribbon Cable Is Present Within The Centering Window

Courtesy of GENERAL MOTORS CORP.

Verify that the ribbon cable (5) is present within the centering window (4).
1. Verify that the sub-stator (3) and rotator (2) arrows are aligned.
2. Slide the centered SIR coil onto the steering shaft assembly.