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Last Modified: 9-16-2014 6.6 C Doc ID: RM000000PF30VHX Model Year: 2015 Model: Tundra Prod Date Range: [08/2014 - ] Title: 1UR-FE ENGINE CONTROL SYSTEM: SFI SYSTEM: P0112,P0113; Intake Air Temperature Circuit Low Input; 2015 MY Tundra [08/2014 - ] DTC P0112 Intake Air Temperature Circuit Low Input DTC P0113 Intake Air Temperature Circuit High Input DESCRIPTION The Intake Air Temperature (IAT) sensor, mounted on the Mass Air Flow (MAF) meter, monitors the IAT. the resistance drops. These variations in resistance are transmitted to the ECM as voltage changes (see Fig. 1). changes, according to changes in the IAT, the voltage at terminal THA also varies. Based on this signal, the ECM increases the fuel injection volume when the engine is cold to improve driveability. HINT: When DTC P0112 or P0113 is stored, the ECM enters fail-safe mode. During fail-safe mode, the IAT is estimated to be 20°C (68°F) by the ECM. Fail-safe mode continues until a pass condition is DTC NO. DTC DETECTION CONDITION TROUBLE AREA P0112 Short in IAT sensor circuit for 0.5 seconds (1 trip detection logic) Short in IAT sensor circuit IAT sensor (built into MAF meter) 1UR-FE ENGINE CONTROL SYSTEM: SFI SYSTEM: P0112,P0113; I... |