Terraza FWD V6-3.5L VIN 8 (2005)
Engine Control Module: Service and Repair
POWERTRAIN CONTROL MODULE (PCM) REPLACEMENT
Service of the powertrain control module (PCM) should normally consist of either replacement of the PCM or electrically erasable programmable read
only memory (EEPROM) programming. If the diagnostic procedures call for PCM replacement, inspect the PCM first to see if the PCM is the correct
part. If the PCM is faulty, remove the PCM and install the new service PCM.
IMPORTANT: When replacing the production PCM with a service PCM (controller), it is important to transfer the broadcast code and production
PCM number to the service PCM label. Do not record this information on the PCM cover. Transfer allows positive identification of PCM parts
throughout the service life of the vehicle.
The new service PCM will not be programmed. You must program the new PCM. DTC P0602 indicates the EEPROM is not programmed or has
malfunctioned.
There are no user serviceable parts in this PCM. The PCM should never be opened for any reason.
Removal Procedure
1. Using a scan tool, retrieve the percentage of remaining engine oil. Record the remaining engine oil life.
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 percent. If the replacement module is not programmed with the remaining engine oil life, the engine oil will need
to be changed at 5,000 km (3,000 mi) from the last engine oil change.
2. Disconnect the negative battery cable.
3. Remove the left sheet metal diagonal brace.
4. Remove the air cleaner assembly cover (1) and lift the PCM (2) from the air cleaner assembly (3).
5. Disconnect the harness connectors (4) from the PCM.
6. Remove the PCM from the engine compartment.
Installation Procedure
