Engine Control Module: Service and Repair

Removal:

Hardware Removal:

PCM With Knock Sensor Module:

Removing Knock Sensor Module From PCM:

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
3. Disconnect PCM electrical connectors
4. Remove PCM from engine compartment
5. Remove PCM access cover
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.

1. Setup.
^ Ensure battery is charged
^ Turn ignition "ON"
^ Ensure connections to the Data Link Connector (DLC).

2. Program the PCM using the latest software matching the vehicle. Refer to Techline terminal/equipment users instructions.
3. If the PCM fails to program. proceed as follows:
^ Ensure that all PCM connections are OK.
^ Check the Tech line terminal/equipment for the latest software version.
^ Attempt to program the PCM. If the PCM still cannot be programmed properly, replace the PCM. The replacement PCM must be programmed.

FUNCTIONAL CHECK
1. Perform On-Board Diagnostic System Check.
2. Start engine and run for one minute.
3. Scan for DTCs using the scan tool.
4. If DTC P0325 sets, the KS module is not fully seated, is missing, or is faulty.