Cooling Fan "on"
Cooling Fan Circuit:
Pin 38 of the ECM is shorted to ground when the fan is activated. The reason for this is that the ECM is designed to prevent a dip in idling speed when the fan cuts in.
Pin 38 of the ECM is shorted to ground when the fan is activated. The reason for this is that the ECM is designed to prevent a dip in idling speed when the fan cuts in.