EG–532 ENGINE – 2JZ–GTE ENGINE TROUBLESHOOTING DTC 24 Intake Air Temp. Sensor Circuit CIRCUIT DESCRIPTION The intake air temp. sensor is built into the mass air flow meter and senses the intake air temperature. The structure of the sensor and connection to the ECM is the same as in the engine coolant temp. sensor shown on page EG–530. If the ECM detects the diagnostic trouble code "24", it operates the fail safe function in which the intake air temperature is assumed to be 20°C (68°F). DTC No. | Diagnostic Trouble Code Detecting Condition | Trouble Area 24 | Open or short in intake air temp. sensor circuit for 0.5 sec. or more | • Open or short in intake air temp. sensor • Circuit • Intake air temp. sensor • ECM WIRING DIAGRAM Intake Air Temp. Sensor (Inside the Mass Air Flow Meter) 3 P-L 4 BR-B Engine Control Module 5 V 45 E9 THA 65 E9 E2 E1 FI6448