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EC-976
[YD (WITH EURO-OBD)]
DTC P0112, P0113 IAT SENSOR
DTC P0112, P0113 IAT SENSOR PFP:22630
Component Description EBS0118I
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.
<Reference data>
*: These data are reference values and are measured between ECM terminal 55
(Intake air temperature sensor) and ground.
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 termi-
nals, such as the ground.
On Board Diagnosis Logic EBS0118J
DTC Confirmation Procedure EBS0118K
NOTE:
If DTC Confirmation Procedure has been previously conducted, always turn ignition switch OFF and wait at
least 10 seconds before conducting the next test.
WITH CONSULT-II
1. Turn ignition switch ON.
2. Select “DATA MONITOR” mode with CONSULT-II.
3. Wait at least 5 seconds.
4. If 1st trip DTC is detected, go to EC-978, "
Diagnostic Procedure"
.
WITH GST
Follow the procedure “WITH CONSULT-II” above.
PBIB1604E
Intake air
temperature °C (°F)
Voltage* V Resistance kΩ
−10 (14) 4.73 7.9 - 9.3
25 (77) 3.62 1.9 - 2.1
80 (176) 1.53 0.31 - 0.37
SEF012P
DTC No. Trouble diagnosis name DTC detecting condition Possible cause
P0112
Intake air temperature sen-
sor circuit low input
An excessively low voltage from the sensor is
sent to ECM.
● Harness or connectors
(The sensor circuit is open or
shorted.)
● Intake air temperature sensor
P0113
Intake air temperature sen-
sor circuit high input
An excessively high voltage from the sensor is
sent to ECM.
SEF817Y
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