Operation CHARM: Car repair manuals for everyone.
Manuals through 2025 now available!

Our trusted friends have launched a new website named LEMON, which has newer manuals. It also contains all the CHARM manuals.

LEMON is the spiritual successor to CHARM, I recommend you try it!

Link: lemon-manuals.la or lemon-manuals.org.ua

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Using Output Controls With A Scan Tool

IMPORTANT: Do not use the scan tool's Output Controls 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 scan tool to operate certain solenoids, valves, motors, and switches. This scan tool function is generally referred to as Output Controls. Operating a PCM controlled device with the scan tool's Output Controls feature should be limited to a maximum of ten seconds per test period.