Nissan Rogue (T33) 2021-Present Service Manual: Dtc/circuit Diagnosis :: B2f72-23 Stop Lamp

DTC Description

DTC DETECTION LOGIC

DTC No.

CONSULT screen items

(Trouble diagnosis content)
DTC detecting condition
B2F72-23

Stop lamp

(Stop lamp)
Diagnosis condition Ignition switch ON
Signal (terminal) Stop lamp switch 2 signal
Threshold When stop lamp switch 2 signal is input even though the brake pedal is not depressed 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

  • BCM

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 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 2.

CHECK STOP LAMP SWITCH SIGNAL

  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>>

Replace BCM. Refer to Removal and Installation.

NO>>

GO TO 3.

CHECK STOP LAMP SWITCH POWER SUPPLY CIRCUIT

  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 4.

NO>>

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

CHECK STOP LAMP SWITCH SIGNAL CIRCUIT

  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 5.

NO>>

Repair or replace harness.

CHECK STOP LAMP SWITCH

Refer to Component Inspection.

Is the inspection result normal?

YES>>

Replace BCM. Refer to Removal and Installation.

NO>>

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

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