ELECTRICAL FAN CONTROL BLOCK DIAGRAM


BHE014000140T46

• The PCM determines the engine conditions based on input signals and sends an on/off signal to cooling fan relay No.1 or No.2/No.3.

1
ECT sensor
2
IAT sensor
3
Ignition switch
4
A/C amplifier (A/C switch signal)
5
Refrigerant pressure switch (Medium pressure switch)
6
PCM
7
Cooling fan relay No.1
8
Cooling fan relay No.2, Cooling fan relay No.3