DTC P0113-00: IAT Sensor No. 1 Circuit High Input: Notes

DTC DETECTION DESCRIPTION

DTC P0113:00	IAT sensor No. 1 circuit high input
DETECTION CONDITION	The PCM monitors the IAT sensor No. 1 signal. If the PCM detects that the IAT sensor No. 1 voltage at the PCM terminal 2U is above 4.62 V for 5 s, the PCM determines that the IAT sensor No. 1 circuit has a malfunction. Diagnostic support note This is a continuous monitor (CCM). The check engine light illuminates if the PCM detects the above malfunction condition during the first drive cycle. FREEZE FRAME DATA/Snapshot data is available. DTC is stored in the PCM memory.
FAIL-SAFE FUNCTION	Fixes the intake air temperature (for engine control) at 20 °C {68 °F}. Inhibits the fuel cut control during shift change.
POSSIBLE CAUSE	MAF sensor/IAT sensor No. 1 connector or terminals malfunction PCM connector or terminals malfunction IAT sensor No. 1 malfunction Short to power supply in wiring harness between MAF sensor/IAT sensor No. 1 terminal A and PCM terminal 2U Open circuit in wiring harness between the following terminals: MAF sensor/IAT sensor No. 1 terminal A-PCM terminal 2U MAF sensor/IAT sensor No. 1 terminal B-PCM terminal 2AY PCM malfunction

CAUTION:

• Verify the malfunction symptom according to not only the PID value but also the symptom troubleshooting.

PARTS DESCRIPTION

Item	Definition	Unit	Condition/Specification
IAT	Intake air temperature (No. 1) input from IAT sensor No. 1	°C, °F	Displays IAT (No. 1)
	IAT sensor No. 1 voltage	V	IAT is 20 °C {68 °F}: Approx. 2.70 V IAT is 40 °C {104 °F}: Approx. 1.80 V IAT is 60 °C {140 °F}: Approx. 1.20 V