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P0197, P0198 EOT SENSOR EC-857 < DTC/CIRCUIT DIAGNOSIS > [VK50VE] C D E F G H I J K L M A EC N P O P0197, P0198 EOT SENSOR Description INFOID:0000000005237335 The engine oil temperature sensor is used to detect the engine oil <Reference data> *: These data are reference values and are measured between ECM terminals 39 DTC Logic INFOID:0000000005237336 DTC DETECTION LOGIC DTC CONFIRMATION PROCEDURE 1. PRECONDITIONING If DTC Confirmation Procedure has been previously conducted, always perform the following procedure 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. Start engine and wait at least 5 seconds. 2. Check 1st trip DTC. Is 1st trip DTC detected? YES >> Go to NO >> INSPECTION END SEF594K Engine oil temperature [ ° C ( ° F)] Voltage* (V) Resistance (k Ω ) –10 (14) 4.4 7.0 - 11.4 20 (68) 3.5 2.1 - 2.9 50 (122) 2.2 0.68 - 1.00 90 (194) 0.9 0.236 - 0.260 110 (230) 0.6 0.143 - 0.153 SEF012P DTC No. Trouble Diagnosis Name DTC Detecting Condition Possible Cause P0197 Engine oil temperature An excessively low voltage from the sensor • Harness or connectors (The sensor circuit is open or shorted.) • Engine oil temperature sensor P0198 Engine oil temperature An excessively high voltage from the sensor |