Nissan Murano: Dtc/circuit Diagnosis / P0719 Brake Pedal Switch B

Nissan Murano (Z52) 2015-2024 Service Manual / Engine / Engine Control System :: Vq35de / Dtc/circuit Diagnosis / P0719 Brake Pedal Switch B

DTC Description

DTC DETECTION LOGIC

DTC

CONSULT screen terms

(Trouble diagnosis content) 		DTC detection condition
P0719

Brake pedal switch B

(Brake Switch "B" Circuit Low) 		Diagnosis condition

  • When a deceleration G of -0.13 G or more occurs after the Nissan Murano vehicle speed exceeds 30 km/h (19 MPH).

  • When the brake normal close switch (Brake pedal position switch) is pressed.
Signal (terminal) Stop lamp switch signal
Threshold The stop lamp switch is released until 2 seconds have passed after the Nissan Murano vehicle has stopped when the diagnosis condition is established. Malfunction is confirmed when the above condition is established 5 times.
Diagnosis delay time —

POSSIBLE CAUSE

  • Harness or connectors

    (Stop lamp switch circuit is open.)

  • Stop lamp switch

FAIL-SAFE

Not applicable

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.

TEST CONDITION:

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

>>

GO TO 2.

PERFORM DTC CONFIRMATION PROCEDURE

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

  2. Repeat the following step 5 times.

    1. Drive the Nissan Murano vehicle and accelerate to 48 km/h (30 MPH).

    2. Decelerate from 48 km/h (30 MPH) to 0 km/h (0 MPH) within 7 seconds.

    3. Stop the Nissan Murano vehicle for 2 seconds or more.

      CAUTION:

      Always drive vehicle at a safe speed.

      NOTE:

      This procedure may be conducted with the drive wheels lifted in the shop or by driving the Nissan Murano vehicle. If a road test is expected to be easier, it is unnecessary to lift the vehicle.

  3. Check DTC.

Is DTC P0719 detected?

YES>>

Refer to Diagnosis Procedure .

NO>>

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

NO>>

Confirmation after repair: INSPECTION END

Diagnosis Procedure

CHECK STOP LAMP SWITCH CIRCUIT

  1. Turn ignition switch OFF.

  2. Depress the brake pedal and check the stop lamp when releasing.

    Brake pedal Stop lamp
    Fully released Not illuminated
    Slightly depressed Illuminated

Is the inspection result normal?

YES>>

GO TO 4.

NO>>

GO TO 2.

CHECK STOP LAMP SWITCH POWER SUPPLY

  1. Disconnect stop lamp switch harness connector.

  2. Check the voltage between stop lamp switch harness connector and ground.

    + − Voltage
    Stop lamp switch
    Connector Terminal
    E38 1 Ground Battery voltage

Is the inspection result normal?

YES>>

GO TO 3.

NO>>

Perform the trouble diagnosis for power supply circuit.

CHECK FUSE

  1. Pull out 10A fuse (No. 10) from fuse block (J/B).

  2. Check that 10A fuse is not blowing.

Is the fuse blown (open)?

YES>>

Replace the fuse after repairing the applicable circuit.

NO>>

Perform trouble diagnosis for power supply circuit.

CHECK STOP LAMP SWITCH INPUT SIGNAL CIRCUIT

  1. Disconnect stop lamp switch harness connector.

  2. Disconnect ECM harness connector.

  3. Check the continuity between stop lamp switch harness connector and ECM harness connector.

    Stop lamp switch ECM Continuity
    Connector Terminal Connector Terminal
    E38 2 E32 139 Existed

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

Is the inspection result normal?

YES>>

GO TO 5.

NO>>

Repair or replace malfunctioning part.

CHECK STOP LAMP SWITCH

Check stop lamp switch. Refer to Component Inspection (Stop Lamp Switch).

Is the inspection result normal?

YES>>

GO TO 6.

NO>>

Replace stop lamp switch. Refer to Exploded View.

REPLACE ECM

Replace ECM. Refer to Removal and Installation.

>>

INSPECTION END

Component Inspection

CHECK STOP LAMP SWITCH-I

  1. Turn ignition switch OFF.

  2. Disconnect stop lamp switch harness connector.

  3. Check the continuity between stop lamp switch harness connector terminals as per the following conditions.

    Stop lamp switch Condition Continuity
    + –
    Terminal
    1 2 Brake pedal Fully released Not existed
    Slightly depressed Existed

Is the inspection result normal?

YES>>

INSPECTION END

NO>>

GO TO 2.

CHECK STOP LAMP SWITCH-II

  1. Adjust stop lamp switch installation. Refer to Adjustment.

  2. Check the continuity between stop lamp switch harness connector terminals as per the following conditions.

    Stop lamp switch Condition Continuity
    + –
    Terminal
    1 2 Brake pedal Fully released Not existed
    Slightly depressed Existed

Is the inspection result normal?

YES>>

INSPECTION END

NO>>

Replace stop lamp switch. Refer to Exploded View.

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