Service of the powertrain control module (PCM) should consist of either replacement of the PCM or electrically erasable programmable read only memory (EEPROM) programming. If diagnostic procedures call for PCM replacement, inspect the replacement PCM to ensure that the correct part PCM is being used.
Important:
• To prevent internal PCM damage, the ignition must be OFF when disconnecting
or reconnecting power to the PCM. For example, when working with a battery
cable, PCM pigtail, PCM fuse, or jumper cables. • Remove any debris from the PCM connector surfaces before servicing the
PCM. Inspect the PCM module connector gaskets when diagnosing or replacing
the PCM. Ensure that the gaskets are installed correctly. The gaskets prevent
contaminant intrusion into the PCM. • The replacement PCM will not be programmed. DTC P0601 and P0602 indicate
the EEPROM is not programmed or has malfunctioned. The following MUST be performed
anytime the PCM is replaced: • Programming of the EEPROM • The PCM Password Learn procedure. • The Idle Learn Procedure . • The Crankshaft Position System Variation Learn Procedure . • Resetting the engine oil life monitor . • The Functional Check • The following must be performed anytime the PCM is disconnected, loses
power, or is reprogrammed: • The Idle Learn Procedure . • The Functional Check
Removal Procedure
- Using a scan tool, retrieve the percentage of remaining engine oil. Record the remaining engine oil life.
- Release the PCM cover mounting holes (1, 5) away from the mounting tabs on the PCM mounting bracket.
- Release the PCM cover (8) from the mounting bracket.
- Remove the PCM cover.
- Disconnect the PCM harness connectors (6).
- Release the spring latch (2) from the PCM.
- Release the PCM mounting tabs (3) from the PCM.
- Remove the PCM (4) from the engine compartment.
Important: It is necessary to record the remaining engine oil life. If the replacement module is not programed with the remaining engine oil life, the engine oil life will default to 100%. If the replacement module is not programmed with the remaining engine oil life, the engine oil will need to be changed at 5000 km (3,000 mi) from the last engine oil change.
Notice: Do not touch the connector pins or soldered components on the circuit board in order to prevent possible electrostatic discharge (ESD) damage to the PCM.
Notice: In order to prevent internal damage to the PCM, the ignition must be OFF when disconnecting or reconnecting the PCM connector.
Installation Procedure
- Install the PCM (4) to the PCM mounting bracket (7) ensuring that the mounting tabs (3) are engaged.
- Secure the spring latch (2) to the PCM.
- Connect the PCM connectors (6) to the PCM (4).
- Install the PCM cover (8) to the PCM mounting bracket (7), ensuring the mounting tabs on the PCM mounting bracket are engaged into the mounting holes in the PCM cover.
- If a new PCM is being installed, program the PCM. Refer to Powertrain Control Module Programming .
Notice: Refer to Fastener Notice in the Preface section.
Tighten
Tighten the PCM connector end fasteners to 8 N·m
(70 lb in).
