9-3 Arc/Aero (9440) L4-2.0L Turbo (2.0 T) (2004)
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Control unit B+ feed to pin 1 from fuse 23 (fuse board 22) and ground connection through pin 3 on grounding point G41.
From MCC unit pin 27, fan speed is controlled by control unit pin 2 with 0-5 volts.
The ventilation fan motor is connected with 2 separate inputs from the control unit.
The fan motor is connected to ground on pin 2 through the fan motor control unit on grounding point G41.
The fan motor receives current on pin 1 and the speed is controlled by the control unit through an increase or decrease of the power supply.
Wiring diagram, control signal.
Wiring diagram, power supply.
