DTC P0113 [L8, LF]

id0102b1803800

DTC P0113

IAT sensor circuit high input

DETECTION CONDITION

•  The PCM monitors the IAT sensor signal. If the PCM detects that the IAT sensor voltage is above 4.84 V, the PCM determines that IAT sensor circuit has a malfunction.

Diagnostic support note

•  This is a continuous monitor (CCM).

•  The MIL illuminates if the PCM detects the above malfunction condition during first drive cycle.

•  FREEZE FRAME DATA (Mode 2/Mode 12) is available.

•  The DTC is stored in the PCM memory.

POSSIBLE CAUSE

•  MAF/IAT sensor connector or terminals malfunction

•  PCM connector or terminals malfunction

•  IAT sensor malfunction

•  Short to power supply in wiring harness between MAF/IAT sensor terminal D and PCM terminal 1AT

•  Open circuit in wiring harness between the following terminals:

―  MAF/IAT sensor terminal D and PCM terminal 1AT

―  MAF/IAT sensor terminal E and PCM terminal 1AR

•  PCM malfunction

DTC P0113	IAT sensor circuit high input
DETECTION CONDITION	• The PCM monitors the IAT sensor signal. If the PCM detects that the IAT sensor voltage is above 4.84 V, the PCM determines that IAT sensor circuit has a malfunction. Diagnostic support note • This is a continuous monitor (CCM). • The MIL illuminates if the PCM detects the above malfunction condition during first drive cycle. • FREEZE FRAME DATA (Mode 2/Mode 12) is available. • The DTC is stored in the PCM memory.
POSSIBLE CAUSE	• MAF/IAT sensor connector or terminals malfunction • PCM connector or terminals malfunction • IAT sensor malfunction • Short to power supply in wiring harness between MAF/IAT sensor terminal D and PCM terminal 1AT • Open circuit in wiring harness between the following terminals: ― MAF/IAT sensor terminal D and PCM terminal 1AT ― MAF/IAT sensor terminal E and PCM terminal 1AR • PCM malfunction

Diagnostic procedure

STEP	INSPECTION		ACTION
1	VERIFY FREEZE FRAME DATA (MODE 12) HAS BEEN RECORDED • Has the FREEZE FRAME DATA (Mode 12) been recorded?	Yes	Go to the next step.
1		No	Record the FREEZE FRAME DATA (Mode 12) on the repair order, then go to the next step.
2	VERIFY RELATED SERVICE INFORMATION AVAILABILITY • Verify related Service Information availability. • Is any related Service Information available?	Yes	Perform repair or diagnosis according to the available Service Information. • If the vehicle is not repaired, go to the next step.
2		No	Go to the next step.
3	INSPECT MAF/IAT SENSOR CONNECTOR AND TERMINALS • Turn the ignition switch off. • Disconnect the MAF/IAT sensor connector. • Inspect for poor connection (such as damaged/pulled-out pins, corrosion). • Is there any malfunction?	Yes	Repair or replace the replace the wiring terminal, then go to Step 8.
3		No	Go to the next step.
4	INSPECT PCM CONNECTOR AND TERMINALS • Disconnect the PCM connector. • Inspect for poor connection (such as damaged/pulled-out pins, corrosion). • Is there any malfunction?	Yes	Repair or replace the replace the wiring terminal, then go to Step 8.
4		No	Go to the next step.
5	CLASSIFY IAT SENSOR MALFUNCTION OR WIRING HARNESS MALFUNCTION • Reconnect the PCM connector. • Connect the M-MDS to the DLC-2. • Perform the PID/DATA Monitor and Record Procedure and access the IAT PID. (See ON-BOARD DIAGNOSTIC TEST [L8, LF].) • Connect a jumper wire between MAF/IAT sensor terminals D and E (wiring harness-side). • Verify the IAT PID value. • Is the voltage below 4.84 V?	Yes	Replace the MAF/IAT sensor, then go to Step 8. (See INTAKE AIR TEMPERATURE (IAT) SENSOR INSPECTION [L8, LF].)
5		No	Go to the next step.
6	INSPECT IAT SENSOR SIGNAL CIRCUIT FOR SHORT TO POWER SUPPLY • MAF/IAT sensor connector is disconnected. • Turn the ignition switch off. • Disconnect the PCM connector. • Turn the ignition switch to the ON position (engine off). • Measure the voltage between MAF/IAT sensor terminal D (wiring harness-side) and body ground. • Is there any voltage?	Yes	Repair or replace the wiring harness for a possible short to power supply, then go to Step 8.
6		No	Go to the next step.
7	INSPECT IAT SENSOR CIRCUIT FOR OPEN CIRCUIT • MAF/IAT sensor and PCM connectors are disconnected. • Inspect for continuity between the following terminals (wiring harness-side): ― MAF/IAT sensor terminal D and PCM terminal 1AT ― MAF/IAT sensor terminal E and PCM terminal 1AR • Is there continuity?	Yes	Go to the next step.
7		No	Repair or replace the wiring harness for a possible open circuit, then go to the next step.
8	VERIFY DTC TROUBLESHOOTING COMPLETED • Make sure to reconnect all disconnected connectors. • Clear the DTC from the PCM memory using the M-MDS. (See AFTER REPAIR PROCEDURE [L8, LF].) • Start the engine and warm it up completely. • Perform the KOEO/KOER self test. (See KOEO/KOER SELF TEST [L8, LF].) • Is the same DTC present?	Yes	Replace the PCM, then go to the next step. (See PCM REMOVAL/INSTALLATION [L8, LF].)
8		No	Go to the next step.
9	VERIFY AFTER REPAIR PROCEDURE • Perform the “AFTER REPAIR PROCEDURE”. (See AFTER REPAIR PROCEDURE [L8, LF].) • Are any DTCs present?	Yes	Go to the applicable DTC troubleshooting. (See DTC TABLE [L8, LF].)
9		No	DTC troubleshooting completed.