User Manual - Page 976

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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 k
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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