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4 CHECK ENGINE COOLANT TEMPERATURE SENSOR Check resistance between engine coolant temperature sensor terminals 1 and 2 as shown in the figure. SEF304X OK or NG OK © GO TO 5. NG © Replace engine coolant temperature sensor. 5 CHECK THERMOSTAT OPERATION When the engine is cold [lower than 70°C (158°F)] condition, grasp lower radiator hose and confirm the engine coolant OK or NG OK © GO TO 6. NG © Repair or replace thermostat. Refer to LC-15, “Thermostat”. 6 CHECK INTERMITTENT INCIDENT Refer to “TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT”, EC-144. © INSPECTION END GI MA EM LC FE AT AX SU BR ST RS BT HA SC EL IDX DTC P0125 ENGINE COOLANT TEMPERATURE SENSOR (ECTS) Diagnostic Procedure (Cont’d) EC-191 |