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P0117, P0118 ECT SENSOR EC-583 < COMPONENT DIAGNOSIS > [VQ40DE] C D E F G H I J K L M A EC N P O DTC Confirmation Procedure INFOID:0000000005273548 1. If DTC Confirmation Procedure has been previously conducted, always perform the following before con- a. Turn ignition switch OFF and wait at least 10 seconds. b. Turn ignition switch ON. c. Turn ignition switch OFF and wait at least 10 seconds. 2. Turn ignition switch ON and wait at least 5 seconds. 3. Check DTC. 4. If DTC is detected, go to . Diagnosis Procedure INFOID:0000000005273549 1. CHECK GROUND CONNECTIONS 1. Turn ignition switch OFF. 2. Loosen and retighten three ground screws on the body. Refer to OK or NG OK >> GO TO 2. NG >> Repair or replace ground connections. 2. CHECK ECT SENSOR POWER SUPPLY CIRCUIT 1. Disconnect engine coolant temperature (ECT) sensor harness 2. Turn ignition switch ON. Detected items Engine operating condition in fail-safe mode Engine coolant temper- ature sensor circuit Engine coolant temperature will be determined by ECM based on the following condition. Condition Engine coolant temperature decided (CONSULT-III display) Just as ignition switch is turned ON or START 40 ° C (104 ° F) Approx. 4 minutes or more after engine starting 80 ° C (176 ° F) Except as shown above 40 - 80 ° C (104 - 176 ° F) (Depends on the time) When the fail-safe system for engine coolant temperature sensor is activated, the cooling fan operates while BBIA0539E BBIA0542E |