General Description

Figure C1-1 - Powertrain Control Module (PCM):

Controls the following:

^ Fuel metering system.

^ Transaxle shifting.

^ Ignition timing.

^ On-board diagnostics for Powertrain functions. It constantly looks at the information from various sensors, and controls the systems that affect vehicle performance. The PCM also performs the diagnostic function of the system. It can recognize operational problems, alert the driver through the MIL, and store diagnostic trouble codes which identify the problem areas to aid the technician in making repairs.

VIN E RPO LA1 engines use a PCM 32U. For service, the PCM consists of two parts: a controller (the PCM without the Knock Sensor module) and the Knock Sensor module.