PRE-RELEASE
Motor, ventilation fan (36), ACC
| Motor, ventilation fan (36), ACC |
| Location |
Motor, ventilation fan (36)
| Main task |
The ventilation fan provides the cabin interior with air from outside the car or inside the cabin depending on the position selected for the air recirculation flap.
| Type |
Direct current motor.
| Connect |
The ventilation fan motor is connected to the corresponding fan control unit.
ACC
The fan control unit contains two connectors; a four-pin connector connected to the ACC unit and a two-pin connector which is directly-connected on the ventilation fan motor. Four-pin connector: control unit B+ feed to pin 4 from fuse 23 (fuse board 22) and is connected to ground through pin 1 on grounding point G41.
Fan speed is controlled from ACC unit pin 10 through control unit pin 3 with a 2 kHz PWM. Fan control unit pin 2 is connected to ACC unit pin 1 with a return feed for diagnostics information. The control unit sends a 2 kHz PWM to the corresponding fan speed input. If a fault is detected, the control unit sends the indicated pulse ratio and the ACC unit generates the relevant DTC.
