Nissan Rogue (T33) 2021-Present Service Manual: Dtc/circuit Diagnosis :: B2f70-01 Stop Lamp

Nissan Rogue (T33) 2021-Present Service Manual / Body Exterior, Doors, Roof & Vehicle Security :: Security Control System / Dtc/circuit Diagnosis :: B2f70-01 Stop Lamp

DTC Description

DTC DETECTION LOGIC

DTC No.

CONSULT screen items

(Trouble diagnosis content) 		DTC detecting condition
B2F70-01

Stop lamp

(Stop lamp) 		Diagnosis condition When brake pedal is depressed
Signal (terminal)

  • Stop lamp switch 1 signal

  • Stop lamp switch 2 signal
Threshold BCM makes a comparison between stop lamp switch 1 signal and stop lamp switch 2 signal. It judges from their values to detect the malfunctioning circuit 10 consecutive times
Diagnosis delay time Depress brake pedal 10 times

POSSIBLE CAUSE

  • Harness or connectors

    (Stop lamp switch circuit is open or shorted)

  • Stop lamp switch

  • Fuse

FAIL-SAFE

—

CONFIRMATION PROCEDURE

DTC CONFIRMATION

CONSULT

  1. Depress brake pedal 10 times.

  2. Ignition switch ON.

  3. Select “Self diagnosis result” mode of “BCM”.

Is DTC detected?

YES>>

Refer to DTC Diagnosis Procedure.

NO-1>>

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

NO-2>>

Confirmation after repair: Inspection End.

DTC Diagnosis Procedure

CHECK STOP LAMP SWITCH

CONSULT

  1. Select “Brake switch 1” and “Brake switch 2” in “Data monitor” mode of “BCM [SIGNAL BUFFER]”.

  2. Check “Brake switch 1” and “Brake switch 2” indication under the following condition:

Monitor item Condition Indication
Brake switch 1 Brake pedal Depressed Off
Not depressed On
Brake switch 2 Depressed On
Not depressed Off

Is the indication normal?

YES>>

Stop lamp switch is OK.

NO-1>>

Brake switch 1: GO TO 2.

NO-2>>

Brake switch 2: GO TO 7.

CHECK FUSE

Check that the following fuse is not blown (open):

Signal name Fuse No.
Battery power supply 32 (5 A)

Is the fuse blown (open)?

YES>>

Replace the blown (open) fuse after replacing the cause of blown (open).

NO>>

GO TO 3.

CHECK STOP LAMP SWITCH SIGNAL-1

  1. Ignition switch OFF.

  2. Disconnect BCM connector.

  3. Ignition switch ON.

  4. Check voltage between BCM harness connector and ground.

    (+) (–) Condition

    Voltage

    (Approx.)
    BCM
    Connector Terminal
    E29 (with type B meter) 111 Ground Stop lamp switch 1 ON (brake pedal is not depressed) Battery voltage
    E60 (with type A meter) 116 Stop lamp switch 1 OFF (brake pedal is depressed) 0 V

Is the inspection normal?

YES>>

Inspection End.

NO>>

GO TO 4.

CHECK STOP LAMP SWITCH POWER SUPPLY CIRCUIT-1

  1. Ignition switch OFF.

  2. Disconnect stop lamp switch connector.

  3. Ignition switch ON.

  4. Check voltage between stop lamp switch harness connector and ground.

    (+) (–)

    Voltage

    (Approx.)
    Stop lamp switch
    Connector Terminal
    E38 4 Ground Battery voltage

Is the inspection result normal?

YES>>

GO TO 5.

NO>>

Check harness for open or short between stop lamp switch and fuse.

CHECK STOP LAMP SWITCH SIGNAL CIRCUIT-1

  1. Ignition switch OFF.

  2. Check continuity between stop lamp switch harness connector and BCM harness connector.

    Stop lamp switch BCM Continuity
    Connector Terminal Connector Terminal
    E38 3 E29 (with type B meter) 111 Yes
    E60 (with type A meter) 116

  3. Check continuity between stop lamp switch harness connector and ground.

    Stop lamp switch — Continuity
    Connector Terminal
    E38 3 Ground No

Is the inspection result normal?

YES>>

GO TO 6.

NO>>

Repair or replace harness.

CHECK STOP LAMP SWITCH

Refer to Component Inspection.

Is the inspection result normal?

YES>>

Inspection End.

NO>>

Replace stop lamp switch. Refer to Exploded View (without ProPILOT ASSIST), or Exploded View (with ProPILOT ASSIST).

CHECK FUSE

Check that the following fuse is not blown (open):

Signal name Fuse No.
Battery power supply 21 (10 A)

Is the fuse blown (open)?

YES>>

Replace the blown (open) fuse after replacing the cause of blown (open).

NO>>

GO TO 8.

CHECK STOP LAMP SWITCH SIGNAL-2

  1. Ignition switch OFF.

  2. Disconnect BCM connector.

  3. Check voltage between BCM harness connector and ground.

    (+) (–) Condition

    Voltage

    (Approx.)
    BCM
    Connector Terminal
    E29 (with type B meter) 110 Ground Stop lamp switch 2 ON (brake pedal is depressed) Battery voltage
    E60 (with type A meter) 115 Stop lamp switch 2 OFF (brake pedal is not depressed) 0 V

Is the inspection normal?

YES>>

Inspection End.

NO>>

GO TO 9.

CHECK STOP LAMP SWITCH POWER SUPPLY CIRCUIT-2

  1. Disconnect stop lamp switch connector.

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

    (+) (–)

    Voltage

    (Approx.)
    Stop lamp switch
    Connector Terminal
    E38 1 Ground Battery voltage

Is the inspection result normal?

YES>>

GO TO 10.

NO>>

Check harness for open or short between stop lamp switch and fuse.

CHECK STOP LAMP SWITCH SIGNAL CIRCUIT-2

  1. Check continuity between stop lamp switch harness connector and BCM harness connector.

    Stop lamp switch BCM Continuity
    Connector Terminal Connector Terminal
    E38 2 E29 (with type B meter) 110 Yes
    E60 (with type A meter) 115

  2. Check continuity between stop lamp switch harness connector and ground.

    Stop lamp switch — Continuity
    Connector Terminal
    E38 2 Ground No

Is the inspection result normal?

YES>>

GO TO 6.

NO>>

Repair or replace harness.

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