For 1990-2009 cars

Notice:

• | Turn the ignition OFF when installing or removing the control module connectors and disconnecting or reconnecting the power to the control module (battery cable, powertrain control module (PCM)/engine control module (ECM)/transaxle control module (TCM) pigtail, control module fuse, jumper cables, etc.) in order to prevent internal control module damage.

• | Control module damage may result when the metal case contacts battery voltage. DO NOT contact the control module metal case with battery voltage when servicing a control module, using battery booster cables, or when charging the vehicle battery.

• | In order to prevent any possible electrostatic discharge damage to the control module, do no touch the connector pins or the soldered components on the circuit board.

• | Remove any debris from around the control module connector surfaces before servicing the control module. Inspect the control module connector gaskets when diagnosing or replacing the control module. Ensure that the gaskets are installed correctly. The gaskets prevent contaminant intrusion into the control module.

• | The replacement control module must be programmed.

Important: Do not substitute a powertrain control module (PCM) from another vehicle for diagnosis.

### Removal Procedure

1. Open the hood.
2. Remove the PCM housing cover (5).
3. Remove the PCM harness connectors (4).
4. Remove the PCM bracket retaining bolt.
5. Remove the PCM (3) from the bracket (2).

### Installation Procedure

1. Install the PCM (3) to the bracket (2).
2. Install the PCM bracket retaining bolt.
3. Install the PCM harness connectors (4).
4. Install the PCM housing cover (5).
5. Program the electrically erasable programmable read only memory (EEPROM) if a new PCM is being installed. Refer to Powertrain Control Module Programming .