Service of the PCM should normally consist of either replacement of the PCM
or EEPROM programming. If the diagnostic procedures call for PCM replacement, check
the PCM first to see if it is the correct part. If the PCM is faulty, remove
it and install the new service PCM.
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.
Notice: In order to prevent possible electrostatic discharge damage to the PCM,
do not touch the connector pins or soldered components on the circuit board.
Notice: Turn the ignition OFF when installing or removing the PCM connectors
and disconnecting or reconnecting the power to the PCM (battery cable, PCM
pigtail, PCM fuse, jumper cables, etc.) in order to prevent internal PCM damage.
Removal Procedure
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.
- Using a scan tool, retrieve the percentage of remaining engine oil. Record the
remaining engine oil life.
Caution: Unless directed otherwise, the ignition and start switch must be in the OFF or LOCK position, and all electrical loads must be OFF before servicing
any electrical component. Disconnect the negative battery cable to prevent an electrical spark should a tool or equipment come in contact with an exposed electrical terminal. Failure to follow these precautions may result in personal injury and/or damage to
the vehicle or its components.
- Disconnect the negative battery cable.
- Remove the screws from the air cleaner top cover.
- Remove the air cleaner top cover.
- Disconnect the harness connectors from
the PCM.
- Remove the PCM from the air cleaner housing
assembly.
Installation Procedure
- Install the connectors to the PCM.
- Install the PCM into the air cleaner housing assembly.
- Install the air cleaner top
cover.
Caution: Unless directed otherwise, the ignition and start switch must be in the OFF or LOCK position, and all electrical loads must be OFF before servicing
any electrical component. Disconnect the negative battery cable to prevent an electrical spark should a tool or equipment come in contact with an exposed electrical terminal. Failure to follow these precautions may result in personal injury and/or damage to
the vehicle or its components.
- Connect the negative battery cable.
- If a new PCM is being installed, program the EEPROM.
- The Replacement PCM will NOT allow Secondary AIR Pump operation until
a total of 10 miles have been accumulated.
EEPROM Programming
- Set-up - Ensure that the following conditions have been met:
• | The battery is fully charged. |
• | If the battery required charging,
disconnect the charging equipment before reprogramming the PCM. |
• | The Techline equipment cable connection at the DLC is secure. |
- Program the PCM using the latest software matching the vehicle. Refer
to up-to-date Techline equipment user's instructions.
- If the PCM fails to program, proceed as follows:
• | Ensure that all PCM connections are OK. |
• | Check the Techline equipment for the latest software version. |
• | Attempt to program the PCM. If the PCM still cannot be programmed properly,
replace the PCM. You must program the replacement PCM. |
Functional Check
- Perform the On-Board Diagnostic System Check. Refer to
Powertrain On Board Diagnostic (OBD) System Check
.
- Start the engine and let the engine run for one minute.
- Use the scan tool in order to scan for the DTCs.