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Home >> Mazda >> 1994 >> MX-3 V6-1844cc 1.8L DOHC >> Repair and Diagnosis >> Powertrain Management >> Computers and Control Systems >> Description and Operation >> Coolant Fan Control System
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Coolant Fan Control System

PURPOSE
To improve engine reliability, the electric (radiator) coolant fan is controlled by the powertrain control module engine (PCME).


Fig.2 Coolant Fan Control System Operating Conditions:





OPERATION
The system employs a LOW/HIGH (2 speed) control of the coolant fan. The coolant fan controls operate under the conditions shown in Fig.2.


View: Coolant Fan And Condenser Fan Control System:





CONSTRUCTION
The system consists of a 2 speed coolant fan motor, three coolant fan relays, PCME, and various PCME input devices.
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