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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