FLA -194
FUEL SYSTEM
DTC P0110 INTAKE AIR TEMPERATURE SENSOR1 CIRCUIT
COMPONENT LOCATION
E2939C87
MAFS & IATS
SCMF16185L
GENERAL DESCRIPTION
E9DAB32E
The Intake Air Temperature Sensor (IATS) is installed into the Mass Air Flow Sensor (MAFS). The IATS uses a thermistor
whose resistance changes with the temperature. The electrical resistance of the IATS decreases as the temperature
increases, and increases as the temperature decreases. The 5 V power source in the ECM is supplied to the IATS via
a resistor in the ECM. That is, the resistor in the ECM and the thermistor in the IATS are connected in series. When
the resistance value of the thermistor in IATS changes according to the intake air temperature, the signal voltage also
changes. Using this signal, the information of the intake air temperature, the ECM corrects basic fuel injection duration
and ignition timing.
DTC DESCRIPTION
EACF4291
PCM monitors difference between MAX. and MIN IATS in order to detect movement in IATS therough Start Test and Drive
Test while enable condition is met. If PCM detects intake air temperature does not change, PCM determines that a fault
exists and a DTC is stored.