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DTC P0113 [L8, LF, L3]

id0102a1803800

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 4.8 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.

•  PENDING CODE is available if the PCM detects the above malfunction condition.

•  FREEZE FRAME DATA is available.

•  Are any DTCs is stored in the PCM memory.

POSSIBLE CAUSE

•  IAT sensor malfunction

•  Poor connection at MAF/IAT sensor or PCM connector

•  Open circuit in wiring harness between MAF/IAT sensor terminal D and PCM terminal 1AT

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

•  Open circuit in wiring harness between 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 4.8 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. • PENDING CODE is available if the PCM detects the above malfunction condition. • FREEZE FRAME DATA is available. • Are any DTCs is stored in the PCM memory.
POSSIBLE CAUSE	• IAT sensor malfunction • Poor connection at MAF/IAT sensor or PCM connector • Open circuit in wiring harness between MAF/IAT sensor terminal D and PCM terminal 1AT • Short to power supply in wiring harness between MAF/IAT sensor terminal D and PCM terminal 1AT • Open circuit in wiring harness between MAF/IAT sensor terminal E and PCM terminal 1AR • PCM malfunction

Diagnostic procedure

STEP	INSPECTION		ACTION
1	VERIFY FREEZE FRAME DATA AND DIAGNOSTIC MONITORING TEST RESULTS HAS BEEN RECORDED • Has FREEZE FRAME DATA been recorded?	Yes	Go to the next step.
1		No	Record the FREEZE FRAME on the repair order, then go to the next step.
2	VERIFY RELATED REPAIR 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 IAT SENSOR CONNECTOR FOR POOR CONNECTION • 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 9.
3		No	Go to the next step.
4	CLASSIFY IAT SENSOR MALFUNCTION OR WIRING HARNESS MALFUNCTION • Connect the WDS or equivalent to DLC-2. • Access IAT PID. • Connect a jumper wire between MAF/IAT sensor terminals D and E. • Verify IAT value • Is the voltage below 4.8 V?	Yes	Replace the MAF/IAT sensor, then go to Step 9. (See INTAKE-AIR SYSTEM REMOVAL/INSTALLATION [L8, LF, L3].)
4		No	Go to the next step.
5	INSPECT IAT SENSOR SIGNAL CIRCUIT FOR SHORT TO POWER SUPPLY • 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 the voltage B+?	Yes	Repair or replace the wiring harness for short to power supply, then go to Step 9.
5		No	Go to the next step.
6	INSPECT PCM CONNECTOR FOR POOR CONNECTION • Turn the ignition switch off. • Disconnect the PCM connector. • Inspect PCM terminals 1AT and 1AR (wiring harness-side) for tightness using feeler tool. • Is there any malfunction?	Yes	Repair or replace the terminal, then go to Step 9.
6		No	Go to the next step.
7	INSPECT IAT SENSOR SIGNAL CIRCUIT FOR OPEN CIRCUIT • Inspect for continuity between MAF/IAT sensor terminal D (wiring harness-side) and PCM terminal 1AT. • Is there continuity?	Yes	Go to the next step.
7		No	Repair or replace the wiring harness for open circuit, then go to Step 9.
8	INSPECT IAT SENSOR GROUND CIRCUIT FOR OPEN CIRCUIT • Inspect for continuity between MAF/IAT sensor terminal E (wiring harness-side) and PCM terminal 1AR. • Is there continuity?	Yes	Go to the next step.
8		No	Repair or replace the wiring harness for open circuit, then go to the next step.
9	VERIFY TROUBLESHOOTING OF DTC P0113 COMPLETED • Make sure to reconnect all disconnected connectors. • Clear the DTC from the PCM memory using the WDS or equivalent. • Start the engine. • Is the same DTC present?	Yes	Replace the PCM, then go to the next step. (See PCM REMOVAL/INSTALLATION [L8, LF, L3].)
9		No	Go to the next step.
10	VERIFY AFTER REPAIR PROCEDURE • Perform the “AFTER REPAIR PROCEDURE”. (See AFTER REPAIR PROCEDURE [L8, LF, L3].) • Are any DTC present?	Yes	Go to the applicable DTC troubleshooting. (See DTC TABLE [L8, LF, L3].)
10		No	Troubleshooting completed.