For 1990-2009 cars

### Removal Procedure

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

1. Disconnect the negative battery cable.
2. Disconnect the engine control module (ECM) connectors from the ECM.
3. Remove the ECM bracket retaining nuts.
4. Remove the ECM with the bracket attached from the battery tray.
5. Unclip the ECM to the bracket and separate the ECM from the bracket.

### Installation Procedure

1. Install the ECM into the bracket.

Caution: Refer to Fastener Caution in the Preface section.

2. Install the ECM with the bracket attached to the battery tray.

Tighten
Tighten the ECM bracket retaining nuts to 15 N·m (11 lb ft).

3. Connect the ECM connectors to the ECM.

Note: If the ECM has been replaced, perform the ECM reprogramming process.

4. Connect the negative battery cable.