Engine Cooling: Overview Mitsubishi Eclipse IV рестайлинг

GENERAL DESCRIPTION

The cooling system is a water-cooled pressurized, forced circulation type which offers the following features.

1. To stabilize engine coolant temperature, the thermostat is located at the coolant inlet port from the radiator
2. To improve engine cooling performance and save weight, a plastic tank and aluminum radiator fins are used.
3. The speed of the radiator fan is controlled by a fan controller. The engine control module (ECM) < M/T > or powertrain control module (PCM) < A/T > detects driving conditions and controls the controller so that the fan operating noise is minimized and fuel efficiency is improved

Scheme 1

Scheme 2

CIRCUIT OPERATION

1. The fan control module is powered from fusible link number 23.
2. The ECM < M/T > or PCM < A/T > judges the required revolution speed of radiator fan motor and condenser fan motor using the input signals transmitted from A/C switch, automatic compressor controller, vehicle speed sensor and engine coolant temperature sensor. The ECM < M/T > or PCM < A/T > activates the fan control module to drive the radiator fan motor and condenser fan motor

TECHNICAL DESCRIPTION

1. The cause could be a malfunction of the fan control module power supply or ground circuit
2. The cause could also be a malfunction of the fan control module or the ECM < M/T > or PCM < A/T >.

1. The fan control module is powered from fusible link number 2.
2. The ECM < M/T > or PCM < A/T > judges the required revolution speed of radiator fan motor and condenser fan motor using the input signals transmitted from A/C switch, automatic compressor controller, vehicle speed sensor and engine coolant temperature sensor. The ECM < M/T > or PCM < A/T > activates the fan control module to drive the radiator fan motor and condenser fan motor.

The fan controller has variable control of the radiator fan motor and the condenser fan motor speeds using signals transmitted from the ECM < M/T > or PCM < A/T >.

The cause could be a malfunction of the radiator fan motor or an open circuit between the fan control module and the radiator fan motor.

1. The fan control module is powered from fusible link number 2.
2. The ECM < M/T > or PCM < A/T > judges the required revolution speed of radiator fan motor and condenser fan motor using the input signals transmitted from A/C switch, automatic compressor controller, vehicle speed sensor and engine coolant temperature sensor. The ECM < M/T > or PCM < A/T > activates the fan control module to drive the radiator fan motor and condenser fan motor

The cause could be a malfunction of the condenser fan motor or fan control module.