Air Bag(s) Arming and Disarming: Service and Repair

SIR DISABLING AND ENABLING




SIR component location affects how a vehicle should be serviced. There are parts of the SIR system installed in various locations around a vehicle. To find the location of the SIR components, refer to SIR Identification Views.

There are several reasons for disabling the SIR system, such as repairs to the SIR system or servicing a component near or attached to an SIR component. There are several ways to disable the SIR system depending on what type of service is being performed. The information covers the proper procedures for disabling/enabling the SIR system.

Disabling Procedure - Air Bag Fuse
1. Turn the steering wheel so that the vehicles wheels are pointing straight ahead.
2. Place the ignition in the OFF position.
3. Locate and remove the fuse(s) supplying power to the SDM.

IMPORTANT: The SDM may have more than one fused power input. To ensure there is no unwanted SIR deployment, personal injury, or unnecessary SIR system repairs, remove all fuses supplying power to the SDM. With all SDM fuses removed and the ignition switch in the ON position, the AIR BAG warning indicator illuminates. This is normal operation, and does not indicate a SIR system malfunction.

4. Wait 1 minute before working on the system.

Enabling Procedure - Air Bag Fuse
1. Place the ignition in the OFF position.
2. Install the fuse(s) supplying power to the SDM.
3. Turn the ignition switch to the ON position. The AIR BAG indicator will flash then turn OFF.
4. Perform the Diagnostic System Check - Vehicle if the AIR BAG warning indicator does not operate as described. Refer to Diagnostic System Check - Vehicle. Initial Inspection and Diagnostic Overview

Disabling Procedure - Negative Battery Cable
1. Turn the steering wheel so that the vehicles wheels are pointing straight ahead.
2. Place the ignition in the OFF position.
3. Disconnect the negative battery cable from the battery.
4. Wait 1 minute before working on system.

Enabling Procedure - Negative Battery Cable
1. Place the ignition in the OFF position.
2. Connect the negative battery cable to the battery.
3. Turn the ignition switch to the ON position. The AIR BAG indicator will flash then turn OFF.
4. Perform the Diagnostic System Check - Vehicle if the AIR BAG warning indicator does not operate as described. Refer to Diagnostic System Check - Vehicle. Initial Inspection and Diagnostic Overview