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P0127 IAT SENSOR EC-801 < DTC/CIRCUIT DIAGNOSIS > [VK50VE] C D E F G H I J K L M A EC N P O P0127 IAT SENSOR Description INFOID:0000000005237284 The intake air temperature sensor is built-into the mass air flow sen- <Reference data> *: These data are reference values and are measured between ECM terminals 48 DTC Logic INFOID:0000000005237285 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. 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. - Check the engine coolant temperature. 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 |