Nissan Sentra manuals

Nissan Sentra B18 (2020-2025) Service Manual: P1575 Brake Switch

Nissan Sentra B18 (2020-2025) Service Manual / Engine / Work Procedure (After Replacing Electric Throttle Control Actuator) / Dtc/circuit Diagnosis / P1575 Brake Switch

Dtc Description

DTC Description

DTC DETECTION LOGIC

DTC

CONSULT screen terms

(Trouble diagnosis content)

DTC detection condition

P1575

BRAKE SW

(Stop lamp switch circuit)

Diagnosis condition

—

Signal (terminal)

—

Threshold

Brake pedal position switch signal is sent to ECM for extremely long time while the Nissan Sentra vehicle is being driven.

Diagnosis delay time

—

POSSIBLE CAUSE

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.

Confirmation Procedure

Confirmation Procedure

  1. PRECONDITIONING

    If the other DTC Confirmation Procedure is performed right before this procedure, the ignition switch must be turned OFF and wait for 10 seconds or more to start this procedure.

    >>

    GO TO 2.

  2. COMPONENT FUNCTION CHECK

    With CONSULT

    1. Turn ignition switch ON.

    2. Select “DATA MONITOR” mode of “ENGINE” with CONSULT.

    3. Check that the “BRAKE SW” indication as per the following condition.

      Monitor item

      Condition

      Indication

      BRAKE SW

      Brake pedal

      Fully released

      OFF

      Slightly depressed

      ON

    Without CONSULT

    1. Turn ignition switch OFF.

    2. Check the stop lamp when depressing and releasing the brake pedal.

      Brake pedal

      Stop lamp

      Fully released

      Not illuminated

      Slightly depressed

      Illuminated

    Is the inspection result normal?

    YES-1 >>

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

    YES-2 >>

    Confirmation after repair: INSPECTION END

    NO >>

    Proceed to DTC Diagnosis Procedure.

Dtc Diagnosis Procedure

DTC Diagnosis Procedure

  1. CHECK BRAKE PEDAL POSITION SWITCH FUNCTION

    1. Turn ignition switch OFF.

    2. Disconnect ECM harness connector.

    3. Check the voltage between ECM harness connector and ground as per the following conditions.

      +

      –

      Condition

      Voltage

      (Approx.)

      ECM

      Connector

      Terminal

      E16

      150

      Ground

      Brake pedal

      Fully released

      0 V

      Slightly depressed

      Battery voltage

    Is the inspection result normal?

    YES >>

    Check intermittent incident. Refer to Intermittent Incident.

    NO-1 >>

    Fixed at 0 V: GO TO 2.

    NO-2 >>

    Fixed at battery voltage: GO TO 4.

  2. CHECK BRAKE PEDAL POSITION SWITCH POWER SUPPLY

    1. Disconnect brake pedal position switch harness connector.

    2. Check the voltage brake pedal position switch harness connector and ground.

      +

      –

      Voltage

      Brake pedal position switch

      Connector

      Terminal

      E84

      1

      Ground

      Battery voltage

    Is the inspection result normal?

    YES >>

    GO TO 3.

    NO >>

    Perform the trouble diagnosis for power supply circuit.

  3. CHECK BRAKE PEDAL POSITION SWITCH SIGNAL CIRCUIT

    1. Check the continuity brake pedal position switch harness connector and ECM harness connector.

      Brake pedal position switch

      ECM

      Continuity

      Connector

      Terminal

      Connector

      Terminal

      E84

      2

      E16

      150

      Existed

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

    Is the inspection result normal?

    YES >>

    GO TO 4.

    NO >>

    Repair or replace error-detected parts.

  4. CHECK BRAKE PEDAL POSITION SWITCH

    Check brake pedal position switch. Refer to Component Inspection.

    Is the inspection result normal?

    YES >>

    INSPECTION END

    NO >>

    Replace brake pedal position switch. Refer to Exploded View.

P1574 Ascd Vehicle Speed Sensor
Dtc Description DTC Description The ECM receives two ASCD vehicle speed sensor signals via CAN communication line. One is sent from combination meter, and the other is from TCM (with ICC ...

P1576 Ascd Brake Switch
Dtc Description DTC Description DTC DETECTION LOGIC DTC CONSULT screen terms (Trouble ...

Other materials:

Bulb or Lens Replacement
Bulb or Lens Replacement Warning: Do not touch bulb while it is lit or right after being turned OFF. Burning may result. CAUTION: Do not attempt to separate the vanity mirror lamp from the sun visor or damage to the components may occur. ...

Dtc Confirmation Procedure
DTC Confirmation Procedure TIRE PRESSURE SENSOR ID REGISTRATION Perform tire pressure sensor ID registration. Refer to Work Procedure. >> GO TO 2. PERFORM DTC CONFIRMATION ...

Front Camera Unit
Values on the Diagnosis Tool Values On The Diagnosis Tool Note: The following table includes information (items) inapplicable to this Nissan Sentra vehicle. For information (items) applicable to this vehicle, refer to CONSULT display items. ...

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