Nissan Rogue Service Manual: P0112, P0113 IAT sensor

Nissan Rogue Service Manual / Engine / Engine Control System / DTC/Circuit diagnosis / P0112, P0113 IAT sensor

DTC Description

DTC DETECTION LOGIC

DTC No.	CONSULT screen terms (Trouble diagnosis content)	DTC detecting condition
P0112	IAT SEN/CIRCUIT- B1 (Intake air temperature sensor 1 circuit low bank 1)	An excessively low voltage from the intake air temperature sensor is sent to ECM.
P0113	IAT SEN/CIRCUIT- B1 (Intake air temperature sensor 1 circuit high bank 1)	An excessively high voltage from the intake air temperature sensor is sent to ECM.

POSSIBLE CAUSE

Harness or connectors (Intake air temperature sensor circuit is open or shorted.)
Intake air temperature sensor
Sensor power supply 2 circuit

FAIL-SAFE

Not applicable

DTC CONFIRMATION PROCEDURE

1.PRECONDITIONING

If DTC Confirmation Procedure has been previously conducted, always perform the following procedure before conducting the next test.

Turn ignition switch OFF and wait at least 10 seconds.
Turn ignition switch ON.
Turn ignition switch OFF and wait at least 10 seconds.

>> GO TO 2.

2.PERFORM DTC CONFIRMATION PROCEDURE

Turn ignition switch ON and wait at least 5 seconds.
Check 1st trip DTC.

Is 1st trip DTC detected? YES >> Proceed to EC-208, "Diagnosis Procedure".

NO >> INSPECTION END

Diagnosis Procedure

1.CHECK INTAKE AIR TEMPERATURE SENSOR POWER SUPPLY

Turn ignition switch OFF.
Disconnect mass air flow sensor (with intake air temperature sensor) harness connector.
Turn ignition switch ON.
Check the voltage between mass air flow sensor harness connector and ground.

Check intake air temperature sensor power supply

Is the inspection result normal? YES >> GO TO 3.

NO >> GO TO 2.

2.CHECK INTAKE AIR TEMPERATURE SENSOR POWER SUPPLY CIRCUIT

Turn ignition switch OFF.
Disconnect ECM harness connector.
Check the continuity between mass air flow sensor harness connector and ECM harness connector.

Check intake air temperature sensor power supply circuit

Also check harness for short to ground.

Is the inspection result normal? YES >> Perform the trouble diagnosis for power supply circuit.

NO >> Repair or replace error-detected parts.

3.CHECK INTAKE AIR TEMPERATURE SENSOR GROUND CIRCUIT

Turn ignition switch OFF.
Disconnect ECM harness connector.
Check the continuity between mass air flow sensor harness connector and ECM harness connector.

Check intake air temperature sensor ground circuit

Also check harness for short to power.

Is the inspection result normal? YES >> GO TO 4.

NO >> Repair or replace error-detected parts.

4.CHECK INTAKE AIR TEMPERATURE SENSOR

Check the intake air temperature sensor. Refer to EC-207, "Component Inspection".

Is the inspection result normal? YES >> GO TO 5.

NO >> Replace mass air flow sensor (with intake air temperature sensor). Refer to EM-24, "Exploded View".

5.CHECK INTERMITTENT INCIDENT

Refer to GI-41, "Intermittent Incident".

>> INSPECTION END

Component Inspection

1.CHECK INTAKE AIR TEMPERATURE SENSOR

Turn ignition switch OFF.
Disconnect mass air flow sensor harness connector and reconnect it again.
Turn ignition switch ON.
Select “DATA MONITOR” mode with CONSULT.
Check that “INT/A TEMP SEN” indicates as per following condition.

Monitor item	Condition	Value (Approx.)
INT/A TEMP SEN	Temperature [°C (°F)] 25 (77)	1.9 - 2.1 (V)

Is the inspection result normal?

YES >> INSPECTION END

NO >> Replace mass air flow sensor (with intake air temperature sensor). Refer to EM-24, "Exploded View".

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