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.

Nissan Sentra B18 (2020-2025) Service Manual: A-Bag Branch Line Circuit

Diagnosis Procedure

Diagnosis Procedure

Warning:

  • Before servicing, turn ignition switch OFF, disconnect battery negative terminal, and wait 3 minutes or more. (To discharge backup capacitor.)

  • Never use unspecified tester or other measuring device.

  1. CHECK CONNECTOR

    1. Turn the ignition switch OFF.

    2. Disconnect the battery cable from the negative terminal.

    3. Check the terminals and connectors of the air bag diagnosis sensor unit for damage, bend and loose connection (unit side and connector side).

    Is the inspection result normal?

    YES >>

    GO TO 2.

    NO >>

    Replace the main harness.

  2. CHECK AIR BAG DIAGNOSIS SENSOR UNIT

    Check the air bag diagnosis sensor unit. Refer to Work Flow.

    Is the inspection result normal?

    YES >>

    Replace the main harness.

    NO >>

    Replace parts whose air bag system has a malfunction.

    Tcm Branch Line Circuit (vehicle Can Communication 1 Circuit)
    Diagnosis Procedure Diagnosis Procedure CHECK CONNECTOR Turn the ignition switch OFF. Disconnect the battery cable from the negative terminal. Check the following terminals and ...
    Hvac Branch Line Circuit
    Diagnosis Procedure Diagnosis Procedure CHECK CONNECTOR Turn the ignition switch OFF. Disconnect the battery cable from the negative terminal. Check the following terminals and ...

    Other materials:

    Bluetooth connections screen
    " " (back) key Bluetooth tab Connections screen "Add New" key " " (settings) key " " (info) key " " (Bluetooth Audio connection) key " " (Bluetooth Hands-Free Phone System connection) key U ...

    Knock Sensor
    Component Inspection Component Inspection CHECK KNOCK SENSOR Turn ignition switch OFF. Disconnect knock sensor harness connector. Check resistance between knock sensor terminals ...

    Front Camera Unit
    Values on the Diagnosis Tool Values On The Diagnosis Tool Note: The following table includes information (items) inapplicable to this Nissan Sentra vehicle. For information (items) applicable to this vehicle, refer to CONSULT display items. ...