Powertrain Control Module (PCM) Replacement

Repair Instructions

Caution: In order to prevent internal damage to the PCM, the ignition must be OFF when disconnecting or reconnecting the PCM connector.

Notice: Service of the PCM should normally consist of either replacement of the PCM, Electrically Erasable Programable Read Only Memory (EEPROM) re-programming.

Notice: If the diagnostic procedures call for the PCM to be replaced, the PCM should be checked first to see if it is the correct part. DTC P0601 indicates the EEPROM programming has malfunctioned. When DTC P0601 is obtained, re-program the EEPROM.


Removal Procedure

1. Disconnect the negative battery cable.

2. Remove the LH hush panel.

3. Loosen the PCM connector screws (1).

Notice: Do not touch the PCM connector pins or soldered components on the circuit board in order to prevent possible electrostatic discharge (ESD) damage. Do not remove the integrated circuit boards from the carrier.

4. Disconnect the PCM electrical connectors.

5. Remove the PCM Retainer.

6. Slide the PCM from the PCM bracket.


Installation Procedure

Remove the new PCM from its packaging and check the service number to make sure it is the same number or updated number as the faulty PCM.

1. Slide the PCM into the PCM bracket.

2. Install the PCM Retainer.

Notice: Do not touch the PCM connector pins or soldered components on the circuit board in order to prevent possible electrostatic discharge (ESD) damage. Do not remove the integrated circuit boards from the carrier.

3. Install the PCM electrical connectors.

4. Tighten the PCM connector screws (1).

5. Install the LH hush panel.

6. Connect the negative battery cable.

Important: Replacement PCMs must be reprogrammed and the crankshaft position system variation learn procedure must be performed.

7. Program the EEPROM.

8. The PCM will need to relearn the crankshaft variation. Refer to Crankshaft Position (CKP) System Variation Learn Procedure.