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P0112, P0113 IAT SENSOR EC-181 < COMPONENT DIAGNOSIS > [QR25DE FOR CALIFORNIA] C D E F G H I J K L M A EC N P O P0112, P0113 IAT SENSOR Description INFOID:0000000004349221 The intake air temperature sensor is built-into mass air flow sensor (1). The sensor detects intake air temperature and transmits a signal to the ECM. The temperature sensing unit uses a thermistor which is sensitive to the change in temperature. Electrical resistance of the thermistor decreases in response to the temperature rise. <Reference data> *: These data are reference values and are measured between ECM terminal 50 CAUTION: Do not use ECM ground terminals when measuring input/output voltage. Doing DTC Logic INFOID:0000000004349222 DTC DETECTION LOGIC DTC CONFIRMATION PROCEDURE 1. PRECONDITIONING If DTC Confirmation Procedure has been previously conducted, always turn ignition switch OFF and wait at least 10 seconds before conducting the next test. >> GO TO 2. 2. PERFORM DTC CONFIRMATION PROCEDURE 1. Turn ignition switch ON and wait at least 5 seconds. 2. Check 1st trip DTC. YES >> Go to NO >> INSPECTION END PBIA9559J Intake air temperature °C (°F)] Voltage* V) Resistance k Ω 25 (77) 3.3 1.800 - 2.200 80 (176) 1.2 0.283 - 0.359 SEF012P DTC No. Trouble diagnosis name DTC detecting condition Possible cause P0112 Intake air tempera- An excessively low voltage from the sensor is • Harness or connectors (The sensor circuit is open or shorted.) • Intake air temperature sensor P0113 Intake air tempera- An excessively high voltage from the sensor is |