For 1990-2009 cars

### Removal Procedure

Caution: Refer to Sensing and Diagnostic Module Handling Caution in the Preface section.

Caution: Refer to SIR Caution in the Preface section.

Important: If the vehicle interior has been exposed to extensive water intrusion such as water leaks, driving through high water, flooding, or other causes, then the sensing and diagnostic module (SDM) and SDM connector may need to be replaced. With the ignition OFF, inspect the area of SDM, including the carpet. If any significant soaking or evidence of previous soaking is detected, the water must be removed, the water damage repaired, and the SDM and SDM connector must be replaced. Before attempting any of these repairs, the SIR must be disabled. Refer to SIR Disabling and Enabling .

1. Disable the supplemental inflatable restraints (SIR). Refer to SIR Disabling and Enabling .
2. Remove the floor console. Refer to Front Floor Console Replacement .
3. Remove the connector position assurance lock, which is tethered to the SDM connector.
4. Disconnect the SDM electrical connector.
5. Remove the SDM mounting bolts.
6. Remove the SDM.

### Installation Procedure

Caution: Refer to SIR Special Tool Caution in the Preface section.

CAUTION: Be careful when you handle a sensing and diagnostic module (SDM). Do not strike or jolt the SDM. Before applying power to the SDM:

• | Remove any dirt, grease, etc. from the mounting surface

• | Position the SDM horizontally on the mounting surface

• | Point the arrow on the SDM toward the front of the vehicle

• | Tighten all of the SDM fasteners and SDM bracket fasteners to the specified torque value

Failure to follow the correct procedure could cause air bag deployment, personal injury, or unnecessary SRS system repairs.
1. Install the SDM with the arrow pointing toward the front of the vehicle.

Notice: Refer to Fastener Notice in the Preface section.

2. Install the SDM mounting bolts.

Tighten
Tighten the SDM mounting bolts to 10 N·m (89 lb in).

3. Connect the SDM electrical connector.
4. Install the connector position assurance lock.
5. Install the floor console. Refer to Front Floor Console Replacement .
6. Enable the SIR. Refer to SIR Disabling and Enabling .