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Home >> Nissan-Datsun >> 2021 >> NV2500 HD S >> Repair and Diagnosis >> External Pages >> Different car >> Section 144 (Security Control System (DTC/Circuit Diagnosis)) >> DTC/Circuit Diagnosis >> DTC B2555: Stop Lamp >> Diagnosis Procedure (With LED rear combination lamps)

Diagnosis Procedure (With LED rear combination lamps)

WARNING: This page is about a different car, the 2018 Nissan Titan XD and 2018 Nissan Titan. However, it is still accessible from the selected car via links, so may be relevant.
  1. CHECK STOP LAMP SWITCH INPUT SIGNAL 1 
    1. Turn ignition switch OFF.
    2. Disconnect BCM connector.
    3. Check voltage between BCM harness connector and ground.

      (+)

      (-)

      Voltage (V)

      (Approx.)

      BCM

      Connector

      Terminal

      M18

      25

      Ground

      Battery voltage

    Is the inspection normal?

    YES

    GO TO 2 .

    NO

    Check 10 A fuse [No. 10, located in the fuse block (J/B)].

    NO

    Check harness for open or short between BCM and fuse.

  2. 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 (V)

      (Approx.)

      Stop lamp switch

      Connector

      Terminal

      E38

      1

      Ground

      Battery voltage

    Is the inspection result normal?

    YES

    GO TO 3 .

    NO

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

  3. CHECK STOP LAMP SWITCH INPUT SIGNAL 2 
    1. Connect stop lamp switch connector.
    2. Check voltage between BCM harness connector and ground.

      (+)

      (-)

      Condition

      Voltage (V)

      (Approx.)

      BCM

      Connector

      Terminal

      M18

      27

      Ground

      Brake pedal

      Depressed

      Battery voltage

      Not depressed

      0

    Is the inspecting result normal?

    YES

    GO TO 4 .

    NO

    GO TO 5 .

  4. REPLACE BCM 
    1. Replace BCM. Refer to Removal and Installation .
    2. Perform initialization of BCM and registration of all Intelligent Keys using CONSULT.

    Inspection End.

  5. CHECK STOP LAMP SWITCH CIRCUIT 
    1. Disconnect stop lamp switch connector.
    2. Check continuity between stop lamp switch harness connector and BCM harness connector.

      Stop lamp switch

      BCM

      Continuity

      Connector

      Terminal

      Connector

      Terminal

      E38

      2

      M18

      27

      Yes

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

      Stop lamp switch

      Ground

      Continuity

      Connector

      Terminal

      E38

      2

      No

    Is the inspection result normal?

    YES

    GO TO 6 .

    NO

    Repair or replace harness.

  6. CHECK STOP LAMP SWITCH 

    Refer to Component Inspection (Stop Lamp Switch) .

    Is the inspection result normal?

    YES

    GO TO 7 .

    NO

    Replace stop lamp switch. Refer to Exploded View .

  7. CHECK INTERMITTENT INCIDENT 

    Refer to Intermittent Incident .

    Inspection End.