ELECTRICAL FAN CONTROL BLOCK DIAGRAM [L8, LF, L3]

id0140a5103900

• 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 cooling fan relays to control the cooling fan rotation speed.

1
ECT sensor
2
TP sensor No.1, No.2
3
Vehicle speed signal (CAN)
4
A/C on request signal (CAN)
5
Battery voltage
6
Fan control relays