Fans Low Speed

Fan Relays

The scan tool displays a Commanded State of None, OFF or ON. This allows you to communicate with the PCM and activate or deactivate the cooling fan 1 relay, manually turning the low speed fans ON and OFF.

Fans High Speed

Fan Relays

The scan tool displays a Commanded State of None, OFF or ON. This allows you to communicate with the PCM to activate or deactivate the cooling fan 1 relay, manually turning the low speed fans On. After a 3-second delay the PCM will activate the cooling fan s/p relay and the cooling fan 2 relay. This turns the high speed fans ON and OFF.