Inflatable Restraint Sensing and Diagnostic Module Replacement

It is located under the center console

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Steering Wheel Inflatable Restraint Module Replacement

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Caution: With wheels of the vehicle facing straight ahead, secure the steering wheel utilizing steering column anti-rotation pin, steering column lock, or a strap to prevent rotation. Locking of the steering column will prevent damage and a possible malfunction of the SIR system. The steering wheel must be secured in position before disconnecting the following components:

  • The steering column
  • The intermediate shaft(s)
  • The steering gear

After disconnecting these components, do not rotate the steering wheel or move the front tires and wheels. Failure to follow this procedure may cause the SIR coil assembly to become un-centered and cause possible damage to the SIR coil. If you think the SIR coil has became un-centered, refer to your specific SIR coil's centering procedure to re-center SIR Coil.

  1. Verify the following before removing the inflatable restraint steering wheel module coil:
  2. The wheels on the vehicle are straight ahead.
  3. That anti-rotation pin J 42640 is installed or the ignition and start switch is in the LOCK position.
  1. Remove the steering wheel.
  2. Remove the steering column shroud.
  3. Disconnect any electrical connectors as needed.

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  1. Remove the inflatable restraint steering wheel module coil retaining ring (2) and discard it. DO NOT reuse the ring.
  2. Remove the inflatable restraint steering wheel module coil (1) from the steering shaft.
  3. If replacing, discard the old inflatable restraint steering wheel module coil.

Installation Procedure
Caution: The new SIR coil assembly will be centered. Improper alignment of the SIR coil assembly may damage the unit, causing an inflatable restraint malfunction.
Note: Do not remove the centering tab from the new inflatable restraint steering wheel module coil until the installation is complete. If the centering tab is missing then re-center the assembly.

  1. If reusing the existing inflatable restraint steering wheel module coil it MUST be centered.

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  1. Align the inflatable restraint steering wheel module coil (1) with the horn tower on the turn signal switch cancel cam (2).

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  1. Slide the inflatable restraint steering wheel module coil (4) onto the steering shaft (2).
  2. Firmly seat the new inflatable restraint steering wheel module coil retaining ring (3) into the appropriate groove on the steering shaft (2).
  3. Remove and discard the centering tab from the new inflatable restraint steering wheel module coil (4).
  4. Connect any electrical connectors as needed.
  5. Install the steering column shroud.