For 1990-2009 cars

### Removal Procedure

Caution: Refer to Battery Disconnect Caution in the Preface section.

1. Disconnect battery.
2. Remove the airbag. Refer to Inflatable Restraint Steering Wheel Module Replacement .
3. Remove the horn control.

• | Disconnect the 2 wiring harness plugs (1).

• | Remove the 3 bolts (2).

• | Remove the horn switch.

• | Remove the signal switch board (3).

### Installation Procedure

Notice: Refer to Fastener Notice in the Preface section.

1. Install the horn switch.

• | Insert the signal switch board.

• | Insert the signal switch control.

Tighten
Tighten the 3 bolts to 2.5 N·m (22 lb in).

• | Connect the 2 wiring harness plug.

2. Install the airbag unit. Refer to Inflatable Restraint Steering Wheel Module Replacement .

• | Connect and lock the wiring harness plug.

• | Clamp the airbag unit in place.

3. Connect the battery.
4. Carry out the readiness test.

After ignition ON, the airbag system readiness check light comes on for 4 seconds and then goes out.

5. For programming procedures, refer to Control Module References .