Nissan Murano: Dtc/circuit Diagnosis / P2100 Throttle Control Motor Relay

Nissan Murano (Z52) 2015-2024 Service Manual / Engine / Engine Control System :: Vq35de / Dtc/circuit Diagnosis / P2100 Throttle Control Motor Relay

DTC Description

DTC DETECTION LOGIC

  • ECM detects that the voltage of power source for throttle control motor is excessively low.

  • ECM detects that the throttle control motor relay is stuck ON.

DTC

CONSULT screen terms

(Trouble diagnosis content) 		DTC detection condition
P2100

ETC MOT PWR-B1

(Throttle actuator “A” control motor circuit/open) 		Diagnosis condition Start engine and let it idle
Signal (terminal) Throttle control motor circuit
Threshold ECM detects that the voltage of power source for throttle control motor is excessively low
Diagnosis delay time —
P2103

ETC MOT PWR-B1

(Throttle actuator “A” control motor circuit high) 		Diagnosis condition Ignition switch ON
Signal (terminal) Throttle control motor circuit
Threshold ECM detects that the throttle control motor relay is stuck ON
Diagnosis delay time —

POSSIBLE CAUSE

DTC P2100

  • Harness or connectors

    (Throttle control motor relay circuit is open)

  • Throttle control motor relay

DTC P2103

  • Harness or connectors

    (Throttle control motor relay circuit is shorted)

  • Throttle control motor relay

FAIL-SAFE

Engine operating condition in fail-safe mode
Fail safe mode Nissan Murano Vehicle behavior
Throttle control motor relay 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.

TESTING CONDITION:

Before performing the following procedure, confirm that battery voltage is more than 8 V.

Witch DTC is detected?

P2100>>

GO TO 2.

P2103>>

GO TO 3.

PERFORM DTC CONFIRMATION PROCEDURE FOR DTC P2100

  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>>

INSPECTION END

PERFORM DTC CONFIRMATION PROCEDURE FOR DTC P2103

  1. Turn ignition switch ON and wait at least 1 second.

  2. 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 RELAY POWER SUPPLY CIRCUIT

  1. Turn ignition switch OFF.

  2. Disconnect ECM harness connector.

  3. Disconnect IPDM E/R harness connector.

  4. Check the continuity between IPDM E/R harness connector and ECM harness connector.

    IPDM E/R ECM Continuity
    Connector Terminal Connector Terminal
    F19 57 F78 2 Existed

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

Is the inspection result normal?

YES>>

GO TO 2.

NO>>

Repair open circuit, short to ground or short to power in harness or connectors.

CHECK THROTTLE CONTROL MOTOR RELAY INPUT SIGNAL CIRCUIT

  1. Check the continuity between IPDM E/R harness connector and ECM harness connector.

    IPDM E/R ECM Continuity
    Connector Terminal Connector Terminal
    F24 65 F78 8 Existed

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

Is the inspection result normal?

YES>>

Perform the trouble diagnosis for power supply circuit.

NO>>

Repair open circuit, short to ground or short to power in harness or connectors.

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