|
|
ENGINE COOLING – Troubleshooting 14-7 <Vehicles without A/C> OK NG Repair Engine-ECU terminal voltage check (Refer to GROUP 13 – Trou- YES NO Engine-ECU terminal voltage check (Refer to GROUP 13 – Trou- Replace the radiator fan motor and fan controller assembly. OK Measure at the engine-ECU connectors C-17. D Connect the connector. D Pull out the terminal No.18 to disconnect it (Ignition switch: ON) D Connect the terminal No.18 to the body earth (Ignition switch: ON) OK Fan controller check (Refer to P.14-10.) NG Replace the radiator fan motor and fan controller assembly. OK Measure at the engine-ECU connectors C-17. D Connect the connector. D Voltage between 18 and body earth _ C or less) OK: 0 – 0.3 V (Engine: idling) NG Check the harness wire between fan controller and engine-ECU. OK D Check the harness wire between fan control relay and engine D Check the harness wire between fan control relay and body D Check the harness wire between fan control relay and fan NG Repair Fan control relay check (Refer to P.14-11.) NG Replace Inspection Procedure 3 Radiator fan does not operate. <Vehicles with A/C> Probable cause The cause could be a malfunction of the radiator fan motor or an open circuit between D Malfunction of radiator fan motor D Open circuit between fan controller and radiator fan Replace the radiator fan motor and fan controller assembly. Inspection Procedure 4 Condenser fan does not operate. <Vehicles with A/C> Probable cause The cause could be a malfunction of the condenser fan motor or of the fan controller. D Malfunction of condenser fan motor D Malfunction of fan controller D Malfunction of wiring harness or connector OK Replace the radiator fan motor and fan OK Check the trouble symptom. NG Replace the condenser fan motor. Condenser fan motor check (Refer to NG Condenser fan motor connector NG Repair |