User Manual - Page 156

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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 k
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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