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EC-156
[QR (WITH EURO-OBD)]
DTC P0112, P0113 IAT SENSOR
DTC P0112, P0113 IAT SENSOR PFP:22630
Component Description EBS010N9
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 34
(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 terminals, such as the ground.
On Board Diagnosis Logic EBS010NA
DTC Confirmation Procedure EBS010NB
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-152, "
Diagnostic Procedure"
.
PBIB1604E
Intake air
temperature °C (°F)
Voltage* V Resistance kΩ
25 (77) 3.32 1.94 - 2.06
80 (176) 1.23 0.295 - 0.349
SEF012P
DTC No.
Trouble diagnosis
name
DTC detecting condition Possible cause
P0112
0112
Intake air tempera-
ture sensor 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
0113
Intake air tempera-
ture sensor circuit
high input
An excessively high voltage from the sensor is
sent to ECM.
SEF058Y
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