Home/Mitsubishi/Lancer Evolution/Mitsubishi Lancer Evolution IX (2005-2007)/Repair manual/Cooling - Lancer/CIRCUIT OPERATION

Contents

Section: Cooling - Lancer

GENERAL DESCRIPTION

SPECIAL TOOLS

INTRODUCTION

TROUBLESHOOTING STRATEGY

SYMPTOM CHART

CIRCUIT OPERATION

TECHNICAL DESCRIPTION

TROUBLESHOOTING HINTS

DIAGNOSIS

INSPECTION PROCEDURE 4: Radiator Fan and Condenser Fan do not Change Speed or Stop

RADIATOR FAN AND CONDENSER FAN DRIVE CIRCUIT

ENGINE COOLANT LEAK CHECK

RADIATOR CAP PRESSURE CHECK

ENGINE COOLANT REPLACEMENT

ENGINE COOLANT CONCENTRATION TEST

FAN CONTROL RELAY CONTINUITY CHECK

<< A >> RADIATOR UPPER HOSE/RADIATOR LOWER HOSE DISCONNECTION

<< B >> TRANSMISSION FLUID COOLER HOSE CONNECTION

<< A >> RADIATOR LOWER HOSE DISCONNECTION

>> A << THERMOSTAT INSTALLATION

>>B<< WATER PUMP INSTALLATION

<< A >> RADIATOR UPPER HOSE DISCONNECTION

>>A<< WATER OUTLET FITTING/THERMOSTAT CASE ASSEMBLY INSTALLATION

>>C<< O-RING INSTALLATION

>>A<< O-RING INSTALLATION

Water Pipe and Hose Check

FASTENER TIGHTENING SPECIFICATIONS

SERVICE SPECIFICATIONS

COOLANT

SEALANT

All sections

CIRCUIT OPERATION Mitsubishi Lancer Evolution IX

Cooling - Lancer

CIRCUIT OPERATION

The fan control module is powered from fusible link number 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.