Powertrain Control Module (PCM) Replacement

PCM Mounting:

PCM Bracket Removal:

NOTE: To prevent internal Powertrain Control Module (PCM) damage, the ignition must be "OFF" when disconnecting or reconnecting power to the PCM.

REMOVE OR DISCONNECT
1. Disconnect negative battery cable.
2. Disconnect PCM mounting hardware.

PCM And Connectors:

3. Disconnect PCM electrical connectors.
4. Remove PCM from engine compartment.

PCM Access Cover:

5. Remove PCM access cover.

Knock Sensor Module - Removing From PCM:

6. Remove knock sensor module from PCM.

INSTALL OR CONNECT
1. Install knock sensor module and access cover.
2. Install PCM in vehicle.
3. Connect PCM electrical connectors.
4. Connect PCM mounting hardware.
5. Connect negative battery cable.

EEPROM Programming

CAUTION The software/calibration used for PCM reprogramming must match the vehicle application, or improper operation and/or damage may occur.

^ Ensure battery is charged.
^ Turn ignition "ON."
^ Ensure connections to the Data Link Connector (DLC) and battery/cigar lighter are secure.
^ Follow the most current Techline terminal/equipment instructions.

PCM Reprogramming Failure

^ Check PCM connections.
^ Check Decline terminal/equipment for latest software version
^ Repeat reprogramming procedures. If it fails again, replace the PCM. The replacement PCM must be programmed.

PCM Functional Check

^ Refer to Diagnostic System Check in Computers and Control Systems/System Diagnosis. Testing and Inspection