DESCRIPTION & OPERATION
The fan controller is powered from fusible link No. 2. (Схема №1) The ECM (manual transmission) or PCM (automatic transmission) judges the required revolution speed of radiator fan motor and condenser fan motor using input signals transmitted from the A/C switch, automatic compressor controller, vehicle speed sensor and engine coolant temperature sensor. The ECM or PCM activates the fan controller to drive the radiator fan motor and condenser fan motor.
Technical Description
- The cause could be a malfunction of the fan controller power supply or ground circuit.
- The cause could also be a malfunction of the fan controller of the ECM (manual transmission) or PCM (automatic transmission).
The fan controller has variable control of the radiator fan motor and the condenser fan motor speeds using signals transmitted from the ECM (vehicles with manual transmission) or PCM (vehicles with automatic transmission).
The cause could be a malfunction of the radiator fan motor or an open circuit between the fan controller and the radiator fan.
The cause could be a malfunction of the condenser fan motor or an open circuit between the fan controller and the radiator fan.