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Home >> Chevrolet >> 2002 >> Astro Van 2WD V6-4.3L VIN X >> Repair and Diagnosis >> Relays and Modules >> Relays and Modules - Powertrain Management >> Relays and Modules - Computers and Control Systems >> Engine Control Module >> Description and Operation >> Output Components

Output Components

Diagnose the output components for the proper response to 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) motor
^ The EVAP system
^ The electronic transmission controls
^ The A/C relay, if so equipped
^ The Vehicle Speed Sensor (VSS) output
^ The Malfunction Indicator Lamp (MIL) control
^ The cruise control enable, if so equipped