|
|
P0117, P0118 ECT SENSOR EC-249 < DTC/CIRCUIT DIAGNOSIS > [MR FOR NISMO RS MODELS] C D E F G H I J K L M A EC N P O P0117, P0118 ECT SENSOR DTC Logic INFOID:0000000012197806 DTC DETECTION LOGIC DTC CONFIRMATION PROCEDURE 1. PRECONDITIONING If DTC Confirmation Procedure has been previously conducted, always perform the following procedure before conducting the next test. 1. Turn ignition switch OFF and wait at least 10 seconds. 2. Turn ignition switch ON. 3. Turn ignition switch OFF and wait at least 10 seconds. >> GO TO 2. 2. PERFORM DTC CONFIRMATION PROCEDURE 1. Turn ignition switch ON and wait at least 5 seconds. 2. Check DTC. YES >> Proceed to . NO >> INSPECTION END Diagnosis Procedure INFOID:0000000012197807 1. CHECK ENGINE COOLANT TEMPERATURE SENSOR POWER SUPPLY 1. Turn ignition switch OFF. 2. Disconnect engine coolant temperature (ECT) sensor harness connector. 3. Turn ignition switch ON. 4. Check the voltage between ECT sensor harness connector and ground. Is the inspection result normal? YES >> GO TO 3. NO >> GO TO 2. 2. CHECK ENGINE COOLANT TEMPERATURE SENSOR POWER SUPPLY CIRCUIT 1. Turn ignition switch OFF. 2. Disconnect ECM harness connector. 3. Check the continuity between ECT sensor harness connector and ECM harness connector. DTC No. Trouble diagnosis name (Trouble diagnosis content) DTC detecting condition Possible Cause P0117 ECT SEN/CIRC An excessively low voltage from the engine • Harness or connectors (Engine coolant temperature sensor cir- • Engine coolant temperature sensor P0118 ECT SEN/CIRC An excessively high voltage from the engine + − Voltage (Approx. ) ECT sensor Connector Terminal F28 1 Ground 5 V |