Output Components

The powertrain control module (PCM) is responsible for the control and operation of many output components. The PCM controls many components with an electronic switch (called an output driver) that completes a ground circuit when turned ON. The PCM monitors the output components for the proper response to the PCM commands. Components where functional monitoring is not feasible will be monitored for circuit continuity and out-of-range values if applicable.
Output components to be monitored include, but are not limited to the following circuits:
^ The Idle Air Control (IAC) valve
^ The Circuit Opening Relay
^ The Malfunction Indicator Lamp (MIL) control
^ The A/C Compressor Control Module (A/C relay)
^ The electronic transaxle controls
For more information on some of the PCM output components refer to PCM Outputs Description. PCM Outputs