User manual MITSUBISHI ENGINE COOLING SPECIFICATIONS

[. . . ] 14-1 ENGINE COOLING CONTENTS GENERAL INFORMATION . 8 14109000208 Engine Coolant Replacement . 19 14-2 ENGINE COOLING - General Information/Service Specifications/Lubricant/Sealants GENERAL INFORMATION The cooling system is designed to keep every part of the engine at appropriate temperature in whatever condition the engine may be operated. The cooling method is of the water-cooled, pressure forced circulation type in which the water pump pressurizes coolant and circulates it throughout the engine. [. . . ] NG OK Repair Engine-ECU terminal voltage check (Refer to GROUP 13 - Troubleshooting. ) NG OK Replace Check the automatic compressor-ECU, and repair if necessary. (Refer to GROUP 55 - Troubleshooting. ) NG Fan controller check (Refer to P. 14-10. ) OK Replace the radiator fan motor and fan controller assembly. Measure at the engine-ECU connector B-54. D Pull out the terminal No. 21 to disconnect it (Ignition switch: ON) OK: The radiator fan motor and condenser fan motor operate. D Connect the terminal No. 21 to the body earth (Ignition switch: ON) OK: The radiator fan motor and condenser fan motor stop. YES Engine-ECU terminal voltage check (Refer to GROUP 13 - Troubleshooting. ) NO Replace the radiator fan motor and fan controller assembly. ENGINE COOLING - Troubleshooting <Vehicles without A/C> Fan control relay check (Refer to P. 14-11. ) OK D D D Check the harness wire between fan control relay and engine control relay. Check the harness wire between fan control relay and body earth. Check the harness wire between fan control relay and fan controller. OK Measure at the engine-ECU connector B-54. D Voltage between 21 and body earth (Engine: idling, engine coolant temperature: 80_C or less) OK: 0 - 0. 3 V (Engine: idling) OK: 0. 7 V or more (When radiator fan is operating) OK NG NG NG Replace 14-7 Repair NG Check the harness wire between fan controller and engine-ECU. OK NG Repair Engine-ECU terminal voltage check (Refer to GROUP 13 - Troubleshooting. ) Fan controller check (Refer to P. 14-10. ) OK Replace the radiator fan motor and fan controller assembly. Measure at the engine-ECU connector B-54. D Pull out the terminal No. 21 to disconnect it (Ignition switch: ON) OK: The radiator fan motor operates. D Connect the terminal No. 21 to the body earth (Ignition switch: ON) OK: The radiator fan motor stops. YES Engine-ECU terminal voltage check (Refer to GROUP 13 - Troubleshooting. ) NO Replace the radiator fan motor and fan controller assembly. Inspection Procedure 3 Radiator fan does not operate. <Vehicles with A/C> The cause could be a malfunction of the radiator fan motor or an open circuit between the fan controller and the radiator fan motor. Probable cause D D Malfunction of radiator fan motor Open circuit between fan controller and radiator fan motor Replace the radiator fan motor and fan controller assembly. Inspection Procedure 4 Condenser fan does not operate. <Vehicles with A/C> The cause could be a malfunction of the condenser fan motor or of the fan controller. Probable cause D D D Malfunction of condenser fan motor Malfunction of fan controller Malfunction of wiring harness or connector NG NG Condenser fan motor check (Refer to GROUP 55. ) OK Replace the radiator fan motor and fan controller assembly. NG Condenser fan motor connector OK Check the trouble symptom. Repair Replace the condenser fan motor. 14-8 ENGINE COOLING - On-vehicle Service ON-VEHICLE SERVICE Cap adapter Adapter 14100100136 ENGINE COOLANT LEAK CHECKING 1. Confirm that the coolant level is up to the filler neck. Install a radiator cap tester and apply 160 kPa pressure, and then check for leakage from the radiator hose or connections. Install the radiator cap securely. 14-10 ENGINE COOLING - On-vehicle Service 10. Start the engine and warm the engine until the thermostat opens. (Touch the radiator hose with your hand to check that warm water is flowing. ) 11. After the thermostat opens, race the engine several times, and then stop the engine. Cool down the engine, and then pour engine coolant into the reserve tank until the level reaches the FULL line. [. . . ] MD970389 or equivalent 14-16 ENGINE COOLING - Water Hose and Water Pipe 14100330306 WATER HOSE AND WATER PIPE REMOVAL AND INSTALLATION <4G6> Pre-removal and Post-installation Operation D Engine Coolant Draining and Supplying (Refer to P. 14-9. ) D D Engine Cover Removal and Installation Air Cleaner Assembly Removal and Installation 13 Nm 1 7 2 6 24 Nm 3 5 4 9 9 8 13 Nm 10 Sealant: Mitsubishi Genuine Part No. MD970389 or equivalent Removal steps AA" "CA 1. Radiator upper hose connection AA" "CA 2. 10. Water inlet fitting Thermostat case assembly Heater hose connection O-ring Water inlet pipe ENGINE COOLING - Water Hose and Water Pipe <4G9> Pre-removal and Post-installation Operation D Engine Coolant Draining and Suppling (Refer to P. 14-9. ) D Engine Cover Removal and Installation D Air Cleaner Assembly and Air Intake Hose Removal and Installation 14-17 6 5 3 14 Nm 2 22 - 25 Nm 6 6 4 1 14 Nm 7 8 Sealant: Mitsubishi Genuine Part No. [. . . ]