Nissan Sentra B18 (2020-2025) Service Manual: P0719 Brake Pedal Switch B

Nissan Sentra B18 (2020-2025) Service Manual / Engine / Work Procedure (After Replacing Electric Throttle Control Actuator) / Dtc/circuit Diagnosis / P0719 Brake Pedal Switch B

Dtc Description

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 Sentra 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 Sentra 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 (BCM)

FAIL-SAFE

Engine Control System

Not applicable

Idle Start/Stop System

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

When ECM detects error while operating the idle start/stop 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.
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 Sentra 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 Sentra 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 Sentra 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 >>
Proceed to Diagnosis Procedure.
NO-1 >>
To check malfunction symptom before repair: Refer to Intermittent Incident.
NO-2 >>
Confirmation after repair: INSPECTION END

Diagnosis Procedure

Diagnosis Procedure

PERFORM BCM DIAGNOSIS

Perform BCM diagnosis. Refer to DTC Index.

Is the inspection result normal?
YES >>
GO TO 2.
NO >>
Repair or replace error-detected parts.
REPLACE ECM

Replace ECM. Refer to ECM : Removal & Installation

>>
INSPECTION END

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