P0112

DTC P0112, P0113 IAT SENSOR







Component Description
The intake air temperature sensor is built-into mass air flow sensor.
The sensor detects intake air temperature and transmits a signal to the ECM.

The temperature sensing unit uses a thermistor which is sensitive to the change in temperature. Electrical resistance of the thermistor decreases in response to the temperature rise.

CAUTION: Do not use ECM ground terminals when measuring input/output voltage. Doing so may result in damage to the ECM's transistor. Use a ground other than ECM terminals, such as the ground.




On Board Diagnosis Logic

DTC Confirmation Procedure
1. If DTC Confirmation Procedure has been previously conducted, always perform the following before conducting the next step.
a. Turn ignition switch OFF and wait at least 10 seconds.
b. Turn ignition switch ON.
c. Turn ignition switch OFF and wait at least 10 seconds.

2. Turn ignition switch ON.
3. Wait at least 5 seconds.
4. Check 1st trip DTC.
5. If 1st trip DTC is detected, go to "Diagnostic Procedure" below.

EC-IATS-01:

Wiring Diagram

Step 1:

Step 1 (Continued)-4:

Step 5:

Diagnostic Procedure

Component Inspection

INTAKE AIR TEMPERATURE SENSOR







1. Check resistance between mass air flow sensor terminals 5 and 6 under the given conditions.
2. If NG, replace mass air flow sensor (with intake air temperature sensor).