Nissan Rogue Service Manual: P0122, P0123 TP sensor

Nissan Rogue Service Manual / Engine / Engine Control System / DTC/Circuit diagnosis / P0122, P0123 TP sensor

DTC Description

DTC DETECTION LOGIC

DTC No.	CONSULT screen terms (Trouble diagnosis content)	DTC detecting condition
P0122	TP SEN 2/CIRC-B1 (Throttle/pedal position sensor/switch ″A″ circuit low)	An excessively low voltage from the TP sensor 2 is sent to ECM.
P0123	TP SEN 2/CIRC-B1 (Throttle/pedal position sensor/switch ″A″ circuit high)	An excessively high voltage from the TP sensor 2 is sent to ECM.

POSSIBLE CAUSE

Harness or connectors (TP sensor 2 circuit is open or shorted.)
Electric throttle control actuator (TP sensor 2)

FAIL-SAFE

The ECM controls the electric throttle control actuator in regulating the throttle opening in order for the idle position to be within +10 degrees.
The ECM regulates the opening speed of the throttle valve to be slower than the normal condition. So, the acceleration will be poor.

DTC CONFIRMATION PROCEDURE

1.CHECK DTC PRIORITY

If DTC P0122 or P0123 is displayed with DTC P0643, first perform the trouble diagnosis for DTC P0643.

Is applicable DTC detected? YES >> Perform diagnosis of applicable. Refer to EC-379, "DTC Description".

NO >> GO TO 2.

2.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.

TESTING CONDITION: Before performing the following procedure, confirm that battery voltage is more than 8 V at idle. >> GO TO 3.

3.PERFORM DTC CONFIRMATION PROCEDURE

Start engine and let it idle for 1 second.
Check DTC.

Is DTC detected? YES >> Proceed to EC-216, "Diagnosis Procedure".

NO >> INSPECTION END

Diagnosis Procedure

1.CHECK DTC PRIORITY

If DTC P0122 or P0123 is displayed with DTC P0643, first perform the trouble diagnosis for DTC P0643.

Is applicable DTC detected? YES >> Perform diagnosis of applicable. Refer to EC-379, "DTC Description".

NO >> GO TO 2.

2.CHECK THROTTLE POSITION SENSOR 2 POWER SUPPLY

Turn ignition switch OFF.
Disconnect electric throttle control actuator harness connector.
Turn ignition switch ON.
Check the voltage between electric throttle control actuator harness connector and ground.

Check throttle position sensor 2 power supply

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

NO >> GO TO 3.

3.CHECK THROTTLE POSITION SENSOR 2 POWER SUPPLY CIRCUIT

Turn ignition switch OFF.
Disconnect ECM harness connector.
Check the continuity between electric throttle control actuator harness connector and ECM harness connector

Check throttle position sensor 2 power supply circuit

Also check harness for short to power.

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

NO >> Repair or replace error-detected parts.

4.CHECK THROTTLE POSITION SENSOR 2 GROUND CIRCUIT

Turn ignition switch OFF.
Disconnect ECM harness connector.
Check the continuity between electric throttle control actuator harness connector and ECM harness connector

Check throttle position sensor 2 ground circuit

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

NO >> Repair or replace error-detected parts.

5.CHECK THROTTLE POSITION SENSOR 2 INPUT SIGNAL CIRCUIT

Check the continuity between electric throttle control actuator harness connector and ECM harness connector.

Check throttle position sensor 2 input signal circuit

Also check harness for short to ground and to power.

Is the inspection result normal? YES >> GO TO 6.

NO >> Repair or replace error-detected parts.

6.CHECK THROTTLE POSITION SENSOR

Check the throttle position sensor. Refer to EC-218, "Component Inspection".

Is the inspection result normal? YES >> GO TO 7.

NO >> Replace electric throttle control actuator. Refer to EM-26, "Removal and Installation".

7.CHECK INTERMITTENT INCIDENT

Refer to GI-41, "Intermittent Incident".

>> INSPECTION END

Component Inspection

1.CHECK THROTTLE POSITION SENSOR

Turn ignition switch OFF.
Reconnect all harness connectors disconnected.
Perform “ Throttle Valve Closed Position Learning”. Refer to EC-140, "Work Procedure".
Turn ignition switch ON.
Set selector lever to D position.
Check the voltage between ECM harness connector terminals as per the following conditions.

Check throttle position sensor

Is the inspection result normal? YES >> INSPECTION END

NO >> Replace electric throttle control actuator. Refer to EM-26, "Removal and Installation".

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