Engine Control Module: Testing and Inspection

Powertrain Control Module (PCM) Mounting:

PCM:

ON-VEHICLE SERVICE POWERTRAIN CONTROL MODULE (PCM)

Note: To prevent possible electrostatic discharge damage to the PCM. Do Not touch the connector pins or soldered components on the circuit board.


Service of the PCM should normally consist of either replacement of the PCM or reprogramming of the Erasable Programmable Read Only Memory (EEPROM).


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. Please Do Not record on PCM cover. This will allow positive identification of PCM parts throughout the service life of the vehicle.

^ To prevent internal PCM damage, the ignition must be "OFF" when disconnecting or reconnecting power to PCM (for example, battery cable, PCM pigtail, PCM fuse, jumper cables, etc.).