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Bad news, the steering wheel has to come off.
Disarming the System
The inflatable restraint Sensing and Diagnostic Module (SDM) maintains a reserve energy supply. When the vehicle power is insufficient to cause deployment of the air bags, the reserve energy supply provides the deployment power. Deployment power is available for as many as 10 minutes after disconnecting the vehicle power by any of the following methods:
You turn OFF the ignition switch.
You remove the AIR BAG fuse (also identified as SIR or SDM fuse) that provides power to the SDM.
You disconnect the vehicle battery from the vehicle electrical system.
Performing the following procedure prevents deploying of the air bags from the reserve energy supply power.
Remove the key from the ignition switch.
Attach the yellow 2-way connector located behind the instrument panel compartment door and insert the CPA to verify the connection is secure. Install the instrument panel compartment door.
Attach the yellow 2-way connector located at the base of the steering column and insert the CPA pin to verify the connection is secure. Install the driver's side instrument panel insulator.
Install the AIR BAG fuse (also identified as SIR or SDM fuse) to the instrument panel fuse block.
Staying well away from both air bags, turn the ignition switch to the ON position. Verify that the AIR BAG warning lamp flashes seven times and then stays off. If the AIR BAG warning lamp does not operate as described, an SIR Diagnostic System Check will be required at an authorized dealership. A scan tool is required to check out the SIR system.