1A-87 Engine General Information and Diagnosis:
DTC P0112: Intake Air Temperature Sensor Circuit Low
S5JB0A1104024
Wiring Diagram
Refer to “DTC P0111: Intake Air Temperature Circuit Range / Performance: ”.
DTC Detecting Condition and Trouble Area
DTC Confirmation Procedure
1) With ignition switch turned OFF, connect scan tool.
2) Turn ON ignition switch and clear DTC using scan tool.
3) Start engine and run it for 10 sec.
4) Check DTC and pending DTC.
DTC Troubleshooting
NOTE
Before this trouble shooting is performed, read the precautions for DTC troubleshooting referring to
“Precautions For DTC Troubleshooting: ”.
DTC detecting condition
Trouble area
DTC will be set when all of following conditions are detected for
0.5 seconds continuously.
• Engine is running
• Voltage of IAT sensor output is less than specified value
(High intake air temperature (low voltage / low resistance))
(1 driving cycle detection logic)
• IAT sensor circuit
• IAT sensor
• ECM
Step
Action
Yes
No
1
Was “Engine and Emission Control System Check”
performed?
Go to Step 2.
Go to “Engine and
Emission Control
System Check: ”.
2
IAT sensor and its circuit check
1) Connect scan tool to DLC with ignition switch turned
OFF.
2) Turn ON ignition switch.
3) Check intake air temp. displayed on scan tool.
Is 119
°
C (246
°
F) indicated?
Go to Step 3.
Intermittent trouble.
Check for intermittent
referring to “Intermittent
and Poor Connection
Inspection: in Section
00”.
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