Nissan Rogue (T33) 2021-Present Service Manual: P2121 App Sensor

Nissan Rogue (T33) 2021-Present Service Manual / Engine :: Engine Control System / Kr15ddt :: Dtc/circuit Diagnosis / P2121 App Sensor

DTC Description

DTC DETECTION LOGIC

DTC

CONSULT screen terms

(Trouble diagnosis content) 		DTC detection condition
P2121 00

Throttle/pedal position sen/sw D

(Throttle/Pedal Position Sensor/Switch "D" Circuit Range/Performance) 		Diagnosis condition Engine running at idle
Signal (terminal) Accelerator pedal position sensor 1 signal
Threshold ECM detects voltage outside the expected range.
Diagnosis delay time —

POSSIBLE CAUSE

  • Harness or connectors (APP sensor 1 circuit is open or shorted.)

  • Accelerator pedal position sensor (APP sensor 1)

  • Sensor power supply 1 circuit

FAIL-SAFE

Engine Control System

Fail safe mode Nissan Ariya Vehicle behavior
Device fix mode

  • This mode fixes the electric IVT control actuator and the EVT control solenoid valve in the reference position.

  • A control signals is not transmitted to the EGR volume control valve and the EGR volume control is deactivated.

Stop/Start System

When a DTC is detected, the stop/start indicator lamp blinks slowly and the stop/start system operation is prohibited.

When ECM detects error while operating the stop/start system, ECM restarts the engine.

DTC Confirmation Procedure

PRECONDITIONING

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

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

  2. Turn ignition switch ON.

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

TESTING CONDITION:

Before performing the following procedure, confirm that battery voltage is more than 11 V at idle.

>>

GO TO 2.

PERFORM DTC CONFIRMATION PROCEDURE

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

  2. Check DTC.

Is DTC detected?

YES>>

Proceed to DTC Diagnosis Procedure.

NO-1>>

To check malfunction symptom before repair: Refer to Intermittent Incident.

NO-2>>

Confirmation after repair: INSPECTION END

DTC Diagnosis Procedure

CHECK APP SENSOR 1 POWER SUPPLY

  1. Turn ignition switch OFF.

  2. Disconnect accelerator pedal position (APP) sensor harness connector.

  3. Turn ignition switch ON.

  4. Check the voltage between APP sensor harness connector and ground.

    + −

    Voltage

    (Approx.)
    APP sensor
    Connector Terminal
    E25 3 Ground 5 V

Is the inspection result normal?

YES>>

GO TO 3.

NO>>

GO TO 2.

CHECK APP SENSOR 1 POWER SUPPLY CIRCUIT

  1. Turn ignition switch OFF.

  2. Disconnect ECM harness connector.

  3. Check the continuity between APP sensor harness connector and ECM harness connector.

    + − Continuity
    APP sensor ECM
    Connector Terminal Connector Terminal
    E25 3 E21 154 Existed

  4. 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.

CHECK APP SENSOR 1 GROUND CIRCUIT

  1. Turn ignition switch OFF.

  2. Disconnect ECM harness connector.

  3. Check the continuity between APP sensor harness connector and ECM harness connector.

    + − Continuity
    APP sensor ECM
    Connector Terminal Connector Terminal
    E25 5 E21 159 Existed

  4. Also check harness for short to power.

Is the inspection result normal?

YES>>

GO TO 4.

NO>>

Repair or replace error-detected parts.

CHECK APP SENSOR INPUT SIGNAL CIRCUIT

  1. Check the continuity between APP sensor harness connector and ECM harness connector.

    + − Continuity
    APP sensor ECM
    Connector Terminal Connector Terminal
    E25 4 E21 158 Existed

  2. Also check harness for short to ground and to power.

Is the inspection result normal?

YES>>

GO TO 5.

NO>>

Repair or replace error-detected parts.

CHECK APP SENSOR

Check the APP sensor. Refer to Component Inspection.

Is the inspection result normal?

YES>>

Check intermittent incident. Refer to Intermittent Incident.

NO>>

Replace accelerator pedal assembly. Refer to Removal and Installation.

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