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Home >> Infiniti >> 2018 >> QX30 Essential, FWD >> Repair and Diagnosis >> Accessories & Equipment >> Headlights >> Exterior Lighting System - Led Headlamp (DTC/Circuit Diagnosis) >> DTC/Circuit Diagnosis >> DTC B16B7: Hi-Mounted Stop Lamp Circuit >> Diagnosis Procedure

Diagnosis Procedure

  1. CHECK HI-MOUNTED STOP LAMP SIGNAL CIRCUIT 1 
    1. Turn ignition switch OFF.
    2. Disconnect following connectors.
      • Hi-mounted stop lamp
      • Condenser
      • BCM
    3. Check continuity between BCM harness connector and ground.

      BCM

      Ground

      Continuity

      Connector

      Terminal

      M27

      44

      Not existed

    4. Check continuity between hi-mounted stop lamp harness connector and ground.

      Hi-mounted stop lamp

      Ground

      Continuity

      Connector

      Terminal

      D610

      2

      Not existed

    Is the inspection result normal?

    YES

    GO TO 2.

    NO

    Repair or replace harness.

  2. CHECK HI-MOUNTED STOP LAMP SIGNAL CIRCUIT 2 
    1. Check continuity between BCM harness connector and condenser harness connector.

      BCM

      Condenser

      Continuity

      Connector

      Terminal

      Connector

      Terminal

      M27

      44

      M35

      1

      Existed

    2. Check continuity between hi-mounted stop lamp harness connector and condenser harness connector.

      Hi-mounted stop lamp

      Condenser

      Continuity

      Connector

      Terminal

      Connector

      Terminal

      D610

      2

      M224

      2

      Existed

    Is the inspection result normal?

    YES

    GO TO 3.

    NO

    Repair or replace harness.

  3. CHECK HI-MOUNTED STOP LAMP SIGNAL CIRCUIT 3 
    1. Check voltage between BCM harness connector and ground.

      (+)

      (-)

      Voltage

      (Approx.)

      BCM

      Connector

      Terminal

      M27

      44

      Ground

      0 V

    2. Check voltage between hi-mounted stop lamp harness connector and ground.

      (+)

      (-)

      Voltage

      (Approx.)

      Hi-mounted stop lamp

      Connector

      Terminal

      D610

      2

      Ground

      0 V

    Is the inspection result normal?

    YES

    GO TO 4.

    NO

    Repair or replace harness.

  4. CHECK CONDENSER 

    Check continuity between condenser terminals.

    BCM

    Continuity

    Connector

    Terminal

    Connector

    Terminal

    M35

    1

    M224

    2

    Existed

    Is the inspection result normal?

    YES

    GO TO 5.

    NO

    Replace condenser.

  5. ERASE DTC 
    1. Connect following connectors.
      • Hi-mounted stop lamp
      • Condenser
      • BCM
    2. Turn ignition switch ON.
    3. Select "Self Diagnostic Result" mode of "BCM" using CONSULT.
    4. Erase DTC, and then repeat "DTC CONFIRMATION PROCEDURE". Refer to DTC Description .

    Is DTC detected?

    YES

    GO TO 6.

    NO

    INSPECTION END

  6. REPLACE HI-MOUNTED STOP LAMP AND ERASE DTC 
    1. Turn ignition switch OFF.
    2. Replace hi-mounted stop lamp. Refer to Removal and Installation .
    3. Turn ignition switch ON.
    4. Select "Self Diagnostic Result" mode of "BCM" using CONSULT.
    5. Erase DTC, and then repeat "DTC CONFIRMATION PROCEDURE". Refer to DTC Description .

    Is DTC detected?

    YES

    Replace BCM. Refer to Removal and Installation .

    NO

    INSPECTION END