ELECTRICAL FAN CONTROL BLOCK DIAGRAM [Z6]
B3E014000140T44
• The PCM determines the engine operation conditions based on input signals from the sensors, calculating the optimum fan motor rotation speed as the fan motor drive duty ratio, and sends a signal to the fan control module to control the cooling fan rotation speed.
|
1
|
ECT sensor
|
|
2
|
PCM temperature sensor
|
|
3
|
TP sensor
|
|
4
|
Vehicle speed signal
|
|
5
|
Instrument cluster (A/C on request signal)
|
|
6
|
Refrigerant pressure switch (low pressure switch, high pressure switch)
|
|
7
|
Refrigerant pressure switch (medium pressure switch)
|
|
8
|
Battery
|
|
9
|
Fan control module
|