S Nissan Sentra Manuals Library
Factory-style information for owners and repair work

Nissan Sentra techinfo

Find Nissan Sentra owner information, maintenance instructions, technical references, service procedures and useful repair pages in one clean online library.

Quick access Sentra Docs
B18 Owner's 2020-2025 Sentra owner information B18 Service 2020-2025 Sentra Workshop manual B17 Owner's 2013-2019 Sentra owner documentation B17 Service 2013-2019 Sentra service information

Nissan Sentra B18 (2020-2025) Service Manual: Power Supply and Ground Circuit

A/c Auto Amp.

Diagnosis Procedure

Diagnosis Procedure

  1. CHECK A/C AUTO AMP. GROUND CIRCUIT FOR OPEN

      1. Ignition switch OFF.

      2. Disconnect A/C auto amp. connector.

      3. Check continuity between A/C auto amp. harness connector and ground.

        A/C auto amp.

        —

        Continuity

        Connector

        Terminal

        M34

        58

        Ground

        Yes

    Is the inspection result normal?

    YES>>

    GO TO 2.

    NO>>

    Repair harness or connector.

  2. CHECK FUSE

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

      Component

      Location

      Fuse No.

      Capacity

      A/C auto amp.

      Fuse block (J/B)

      6

      10 A

    Is the fuse blown (open)?

    YES>>

    Replace the blown (open) fuse after repairing the affected circuit if a fuse is blown (open).

    NO>>

    GO TO 3.

  3. CHECK A/C AUTO AMP. POWER SUPPLY

      1. Connect A/C auto amp. connector.

      2. Ignition switch ON.

      3. Check voltage between A/C auto amp. harness connector terminals.

        +

        -

        Voltage

        (Approx.)

        A/C auto amp.

        Connector

        Terminal

        M34

        60

        Ground

        Battery voltage

    Is the inspection result normal?

    YES>>

    Replace A/C auto amp. Refer to Removal and Installation.

    NO>>

    Repair the A/C auto amp. accessory power supply circuit.

A/c Switch Assembly

Diagnosis Procedure

Diagnosis Procedure

  1. CHECK FUSE

      1. Ignition switch OFF.

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

        Component

        Location

        Fuse No.

        Capacity

        A/C switch assembly

        Fuse block (J/B)

        6

        10 A

    Is the fuse blown (open)?

    YES >>

    Replace the blown (open) fuse after repairing the affected circuit if a fuse is blown (open).

    NO >>

    GO TO 2.

  2. CHECK A/C SWITCH ASSEMBLY POWER SUPPLY

      1. Disconnect A/C switch assembly connector.

      2. Ignition switch ON.

      3. Check voltage between A/C switch assembly harness connector and ground.

        +

        −

        Voltage

        (Approx.)

        A/C switch assembly

        Connector

        Terminal

        M59

        5

        Ground

        Battery voltage

    Is the inspection result normal?

    YES >>

    GO TO 3.

    NO >>

    Repair harness or connector between A/C switch assembly and fuse.

  3. CHECK A/C SWITCH ASSEMBLY GROUND CIRCUIT FOR OPEN

      1. Ignition switch OFF.

      2. Check continuity between A/C switch assembly harness connector and ground.

        A/C switch assembly

        —

        Continuity

        Connector

        Terminal

        M59

        7

        Ground

        Yes

    Is the inspection result normal?

    YES >>

    Replace A/C switch assembly. Refer to Removal and Installation.

    NO >>

    Repair harness or connector.

    U2140-87 Can Comm Err (ecm)
    Dtc Description DTC Description DESCRIPTION CAN (Controller Area Network) is a serial communication system for real time application. It is an on-Nissan Sentra vehicle multiplex...
    Blower Motor
    Diagnosis Procedure Diagnosis Procedure CHECK FUSE Ignition switch OFF. Check 30A fuse [No. 55, located in fuse block (J/B)]. Is the inspection result normal? YES >> GO TO...

    Other materials:

    B2c95-64 Combination Switch
    Dtc Description DTC Description DTC DETECTION LOGIC DTC No. CONSULT screen items (Trouble diagnosis content) DTC Detection Condition ...

    U0073-00 Control Module Comm Bus a Off
    Dtc Description DTC Description DESCRIPTION CAN (Controller Area Network) is a serial communication line for real time applications. It is an on-Nissan Sentra vehicle multiplex communication line with high data communication speed and excellent error detection ability. Modern Nissan ...

    Component Parts. Srs Air Bag Control System
    Srs Air Bag Control System Component Parts Location Component Parts Location A. RH front passenger seat (view with seat removed from Nissan Sentra vehicl ...