For 1990-2009 cars

### Removal Procedure

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

Important: Left hand drive shown, right hand drive similar.

1. Disconnect the negative battery connector.
2. Remove the instrument panel under cover. Refer to Instrument Cluster Trim Panel Replacement.
3. Remove the knee bolster. Refer to Knee Bolster Replacement.
4. Disconnect the electrical connectors.
5. Remove the nuts securing the intelligent switching unit (ISU).
6. Remove the ISU.

### Installation Procedure

Notice: Refer to Fastener Notice in the Preface section.

1. Install the ISU with the nuts.

Tighten
Tighten the ISU nuts to 9.5 N·m (84 lb in).

2. Connect the electrical connectors.
3. Install the knee bolster. Refer to Knee Bolster Replacement.
4. Install the instrument panel under cover. Refer to Instrument Cluster Trim Panel Replacement.
5. Connect the negative battery connector.