For 1990-2009 cars

Caution: When you are performing service on or near the SIR components or the SIR wiring, you must disable the SIR system. Refer to Disabling the SIR System. Failure to follow the correct procedure could cause air bag deployment, personal injury, or unnecessary SIR system repairs.

The center sensor assembly may maintain sufficient voltage in order to cause a deployment for up to 2 minutes. This deployment may occur under one of the following circumstances:

• | After the ignition switch is turned to LOCK.

• | The battery is disconnected.

Service procedures require disconnection of the following components from the deployment loop in order to avoid an accidental deployment:

• | The IGN fuse

• | The CIG fuse

• | The RADIO fuse

• | The steering column circuit (SRS coil assembly and inflator module)

Notice: In order to prevent possible Electrostatic Discharge damage to the PCM, Do Not touch the connector pins or the soldered components on the circuit board.

Some solid-state electrical components may be damaged by Electrostatic Discharge (ESD).

1. Do not store the inflator modules at temperatures above 65°C (150°F).
2. Do not use the following components if dropped from a height of 91.4 cm (3 ft) or more.

• | Inflator modules

• | Center sensory assemblies

3. Do not apply power to the SIR except under the following circumstances:

• | All the components are connected.

• | A diagnostic chart requests power.

• | Powering up the SIR with the components disconnected will set a Diagnostic Trouble Code (DTC).

4. The SIR diagnostic System Check in the Supplemental Restraint System (SIR) is the starting point of any SIR diagnostics.

The SIR Diagnostic System Check will perform the following functions:

• | Verify the proper air bag indicator operation

• | Lead you to the correct chart in order to diagnose any SIR faults to avoid an extended diagnostic time

5. Bypassing the SIR Diagnostic System Check procedures may result in the following circumstances:

• | Extended diagnostic time

• | An incorrect diagnosis

• | An incorrect parts replacement