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P0127 IAT SENSOR EC-193 < COMPONENT DIAGNOSIS > [VQ37VHR] C D E F G H I J K L M A EC N P O P0127 IAT SENSOR Description INFOID:0000000001910830 The intake air temperature sensor is built-into mass air flow sensor <Reference data> *: These data are reference values and are measured between ECM terminal 67 CAUTION: Do not use ECM ground terminals when measuring input/output voltage. Doing DTC Logic INFOID:0000000001734026 DTC DETECTION LOGIC DTC CONFIRMATION PROCEDURE 1. PRECONDITIONING If DTC Confirmation Procedure has been previously conducted, always perform the following before conduct- 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. TESTING CONDITION: >> GO TO 2. 2. PERFORM DTC CONFIRMATION PROCEDURE With CONSULT-III 1. Wait until engine coolant temperature is less than 90 ° C (194 ° F) - Turn ignition switch ON. - Select “DATA MONITOR” mode with CONSULT-III. 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 P0127 Intake air temperature Rationally incorrect voltage from the sensor is • Harness or connectors (The sensor circuit is open or shorted) • Intake air temperature sensor |