Nissan Murano: Dtc/circuit Diagnosis / P2118 Throttle Control Motor

Nissan Murano (Z52) 2015-2024 Service Manual / Engine / Engine Control System :: Vq35de / Dtc/circuit Diagnosis / P2118 Throttle Control Motor

DTC Description

DTC DETECTION LOGIC

DTC

CONSULT screen terms

(Trouble diagnosis content) 		DTC detection condition
P2118

ETC MOT-B1

(Throttle actuator control motor current range/performance) 		Diagnosis condition Start engine and let it idle
Signal (terminal) Throttle control motor circuit
Threshold ECM detects short in both circuits between ECM and throttle control motor
Diagnosis delay time —

POSSIBLE CAUSE

  • Harness or connectors

    (Throttle control motor circuit is shorted.)

  • Electric throttle control actuator

    (Throttle control motor)

FAIL-SAFE

Engine operating condition in fail-safe mode
Fail safe mode Nissan Murano Vehicle behavior
Throttle control motor ECM stops the electric throttle control actuator control, throttle valve is maintained at a fixed opening (approx. 5 degrees) by the return spring.
DTC Confirmation Procedure

PRECONDITIONING

If DTC Confirmation Procedure has been previously conducted, always perform the following 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.

>>

GO TO 2.

PERFORM DTC CONFIRMATION PROCEDURE

  1. Turn ignition switch ON and wait at least 2 seconds.

  2. Start engine and let it idle for 5 seconds.

  3. Check DTC.

Is DTC detected?

YES>>

Proceed to Diagnosis Procedure.

NO>>

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

NO>>

Confirmation after repair: INSPECTION END

Diagnosis Procedure

CHECK THROTTLE CONTROL MOTOR OUTPUT SIGNAL CIRCUIT FOR OPEN AND SHORT

  1. Disconnect electric throttle control actuator harness connector.

  2. Disconnect ECM harness connector.

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

    Electric throttle control actuator ECM Continuity
    Connector Terminal Connector Terminal
    F50 1 F78 1 Not existed
    3 Existed
    2 1 Existed
    3 Not existed

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

Is the inspection result normal?

YES>>

GO TO 2.

NO>>

Repair or replace malfunctioning part.

CHECK THROTTLE CONTROL MOTOR

Check throttle control motor. Refer to Component Inspection.

Is the inspection result normal?

YES>>

INSPECTION END

NO>>

Replace electric throttle control actuator. Refer to Removal and Installation.

Component Inspection

CHECK THROTTLE CONTROL MOTOR

  1. Turn ignition switch OFF.

  2. Disconnect electric throttle control actuator harness connector.

  3. Check resistance between electric throttle control actuator terminals as per the following.

    Terminals Resistance
    1 and 2 Approx. 1 - 15 Ω [at 25°C (77°F)]

Is the inspection result normal?

YES>>

INSPECTION END

NO>>

Replace electric throttle control actuator. Refer to Removal and Installation.

    P2101 Electric Throttle Control Function

    DTC Description DTC DETECTION LOGIC DTC CONSULT screen terms (Trouble diagnosis content) DTC detection condition P2101 ETC FNCTN/CIRC-B1 (Throttle actuator “A” control motor circuit range/performance) Diagnosis condition Start engine and let it idle Signal (terminal) — Threshold Electric throttle control function does not operate properly Diagnosis delay time — POSSIBLE CAUSE Harness or connectors (Throttle control motor circuit is open or shorted) Electric throttle control actuator FAIL-SAFE Engine operating condition in fail-safe mode Fail safe mode Nissan Murano Vehicle behavior Electric throttle control function ECM stops the electric throttle control actuator control, throttle valve is maintained at a fixed opening (approx...

    P2119 Electric Throttle Control Actuator

    DTC Description DTC DETECTION LOGIC DTC CONSULT screen terms (Trouble diagnosis content) DTC detection condition P2119 ETC ACTR-B1 (Throttle actuator control throttle body range/performance) 1 Diagnosis condition — Signal (terminal) — Threshold Electric throttle control actuator does not function properly due to the return spring malfunction Diagnosis delay time — 2 Diagnosis condition — Signal (terminal) — Threshold Throttle valve opening angle in fail-safe mode is not in specified range Diagnosis delay time — 3 Diagnosis condition — Signal (terminal) — Threshold ECM detects that the throttle valve is stuck open Diagnosis delay time — POSSIBLE CAUSE Electric throttle control actuator FAIL-SAFE Engine operating condition in fail-safe mode Fail safe mode Nissan Murano Vehicle behavior Electric throttle control actuator (When electric throttle control actuator does not function properly due to the return spring malfunction:) ECM controls the electric throttle actuator by regulating the throttle opening around the idle position...

    Other information:

    Nissan Murano (Z52) 2015-2024 Service Manual: B13ec Factory Mode


    DTC Description DTC DETECTION LOGIC DTC No. CONSULT screen terms (Trouble diagnosis content) DTC detection condition B13EC–52 Factory mode (AV control unit) [—] Diagnosis condition When ignition switch is ON. Signal (terminal) – Threshold – Diagnosis delay time 30 seconds or more B13EC–55 [CONFIG] Diagnosis condition When ignition switch is ON...

    Nissan Murano (Z52) 2015-2024 Service Manual: P0643 Sensor Power Supply


    DTC Description DESCRIPTIONECM supplies a voltage of 5 V to some of the sensors systematically divided into 2 groups, respectively. Accordingly, when a short circuit develops in a sensor power source, a malfunction may occur simultaneously in the sensors belonging to the same group as the short-circuited sensor...

    Categories

    Front manual seat adjustment (if so equipped)

    Your vehicle seats can be adjusted manually. For additional information about adjusting the seats, refer to the steps outlined in this section.

    Forward and backward

    Nissan Murano. Front manual seat adjustment (if so equipped)

    read more

     
    Copyright © 2026 www.nimurano.com