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Nissan Sentra B18 (2020-2025) Service Manual: Diagnosis Procedure

Nissan Sentra B18 (2020-2025) Service Manual / Driver Controls / Interior Lighting System :: Dtc/circuit Diagnosis / Trunk Room Lamp Circuit / Diagnosis Procedure

Diagnosis Procedure

  1. CHECK TRUNK ROOM LAMP OUTPUT

    1. CONSULT

      1. Ignition switch OFF.

      2. Disconnect trunk room lamp connector.

      3. Ignition switch ON.

      4. Select “Trunk/luggage lamp” in "Active Test" mode of "BCM(TRUNK)".

      5. With operating the test item, check continuity between BCM harness connector and the ground.

      BCM

      —

      Test item

      Continuity

      Connector

      Terminal

      M84

      30

      Ground

      Trunk/luggage lamp

      On

      Yes

      Off

      No

    Is the inspection result normal?

    YES>>

    GO TO 2.

    NO>>

    Continuity exists and remains unchanged: GO TO 3.

    NO>>

    Continuity does not exist and remains unchanged: Replace BCM. Refer to Removal and Installation.

  2. CHECK TRUNK ROOM LAMP OPEN CIRCUIT 1

      1. Ignition switch OFF.

      2. Disconnect BCM connector.

      3. Check continuity between BCM harness connector and trunk room lamp harness connector.

      BCM

      Trunk room lamp

      Continuity

      Connector

      Terminal

      Connector

      Terminal

      M84

      30

      B78

      2

      Yes

    Is the inspection result normal?

    YES >>

    Replace trunk room lamp bulb. Refer to Bulb Replacement.

    NO >>

    Repair or replace harnesses.

  3. CHECK TRUNK ROOM LAMP SHORT CIRCUIT

      1. Ignition switch OFF.

      2. Disconnect BCM connector.

      3. Check continuity between BCM harness connector and the ground.

      BCM

      —

      Continuity

      Connector

      Terminal

      M84

      30

      Ground

      No

    Is the inspection result normal?

    YES >>

    Replace BCM. Refer to Removal and Installation.

    NO >>

    Repair or replace harnesses.

Component Function Check
Component Function Check CAUTION: Before performing the diagnosis, check that the following are normal: Interior room lamp power supply circuit ...

Push-Button Ignition Switch Illumination Circuit
...

Other materials:

Magnet Clutch
Removal and Installation Removal and Installation REMOVAL Remove front wheel and tire (RH). Refer to Removal and Installation. Partially remove the front fender protector (RH). Refer to Exploded View. Remove the front under cover. Refer to Removal and Installation. Re ...

Vanity mirror lamp
Removal and installation Caution: Do not attempt to separate the vanity mirror lamp from the sun visor or damage to the components may occur. Note: The vanity mirror lamp is replaced as part of the sun visor. Refer to int-40, "removal and installation". Bulb or lens replacement ...

Operation
4.2 Inch Information Display Operation Operation SWITCH NAME AND FUNCTION No. Switch name Description ...

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