For 1990-2009 cars

Scan Tool Output Control | Additional Menu Selection(s) | Description
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Cooling Fan 1 Relay | Engine Output Controls | The scan tool displays a Commanded State of None, Off or On. This allows you to communicate with the engine controller and activate or deactivate the cooling fan 1 relay, manually turning the fans On and Off.
Cooling Fan 2 Relay | Engine Output Controls | The scan tool displays a Commanded State of None, Off or On. This allows you to communicate with the engine controller and activate or deactivate the cooling fan 2 relay, manually turning the fans On and Off.