PCM Output Controls

IMPORTANT: Do not use the scan tool's Output Control feature until the vehicle is at normal operating temperatures. The PCM will not respond to a scan tool request for Output Controls until the engine coolant temperature is above 80°C (175°F). Failure to wait for normal operating temperatures can result in the incorrect diagnosis of a driveability problem.

Output Controls are disabled when any DTCs are stored by the PCM. Clear all DTCs before using Output Controls on the scan tool.

The Powertrain Control Module (PCM) can be directed by the Tech 2 scan tool to operate certain solenoids, valves, motors, and switches. This scan tool function is generally referred to as Output Controls. Output controls can be found under Special Functions on the Tech 2 scan tool. Operating a PCM controlled device with the scan tool should be limited to a maximum of ten seconds per test period.