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5 CHECK COOLING FAN HIGH SPEED OPERATION Without CONSULT-II 1. Turn ignition switch “OFF”. Ω resistor to engine coolant temperature sensor harness connector. 6. Restart engine and make sure that cooling fans-1 and -2 operate at high speed. MEC475B OK or NG OK © GO TO 6. NG © Check cooling fan high speed control circuit. (Go to PROCEDURE B, EC-1214.) 6 CHECK COOLING SYSTEM FOR LEAK Apply pressure to the cooling system with a tester, and check if the pressure drops. Testing pressure: 157 kPa (1.57 bar, 1.6 kg/cm 2 , 23 psi) CAUTION: Higher than the specified pressure may cause radiator damage. SLC754A Pressure should not drop. OK or NG OK © GO TO 8. NG © GO TO 7. 7 DETECT MALFUNCTIONING PART Check the following for leak. + Hose + Radiator + Water pump (Refer to LC-55, “Water Pump”.) © Repair or replace. DTC P1217 OVER HEAT YD22DDTI Diagnostic Procedure (Cont’d) EC-1209 |