SYSTEM DIAGRAM 1. SECONDARY AIR INJECTION CONTROL SYSTEM DIAGRAM  2. SECONDARY AIR INJECTION SYSTEM WIRING DIAGRAM 
 3. EGR CONTROL SYSTEM DIAGRAM  4. EGR CONTROL SYSTEM WIRING DIAGRAM 
 5. EVAP CONTROL SYSTEM DIAGRAM  Text in Illustration
6. EVAP CONTROL SYSTEM WIRING DIAGRAM  |
Toyota Tundra Service Manual > Sfi System: Intake Air Temperature Sensor 1 Circuit Range / Performance (P0111)
DESCRIPTION The Intake Air Temperature (IAT) sensor, mounted on the Mass Air Flow (MAF) meter, monitors the IAT. The IAT sensor has a built-in thermistor with a resistance that varies according to the temperature of the intake air. When the IAT is low, the resistance of the thermistor increases. Whe ...
