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DTC P0127 IAT SENSOR EC-793 < SERVICE INFORMATION > [VK45DE] C D E F G H I J K L M A EC N P O DTC P0127 IAT SENSOR Component Description INFOID:0000000001326631 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 34 CAUTION: Do not use ECM ground terminals when measuring input/output On Board Diagnosis Logic INFOID:0000000001326632 DTC Confirmation Procedure INFOID:0000000001326633 NOTE: CAUTION: Always drive vehicle at a safe speed. WITH CONSULT-III 1. Wait until engine coolant temperature is less than 90 ° C (194 ° F) a. Turn ignition switch ON. b. Select “DATA MONITOR” mode with CONSULT-III. c. Check the engine coolant temperature. d. If the engine coolant temperature is not less than 90 ° C (194 ° F), turn ignition switch OFF and cool down engine. ° C (194 ° F). 2. Start engine. PBIB1604E 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 |