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Home >> Nissan-Datsun >> 2003 >> Sentra Limited >> Repair and Diagnosis >> External Pages >> Different car >> Section 2266 (SRS Airbag Control System) >> DTC/Circuit Diagnosis >> DTC B1049, B1050, B1051, B1052, B1054, B1055, B1056, B1057: Driver Airbag Module >> Diagnosis Procedure (Component Diagnosis)

Diagnosis Procedure (Component Diagnosis)

WARNING: This page is about a different car, the 2012 Nissan Pathfinder. However, it is still accessible from the selected car via links, so may be relevant.

Recheck SRS after each replacement.

  1. HARNESS CONNECTOR

    Is there any visible damage to the connector?

    YES or NO 

    YES: Replace the harness.

    NO: GO TO 2

  2. WIRING HARNESS

    Is there any visible damage to the harness?

    YES or NO 

    YES: Replace the harness.

    NO: GO TO 3

  3. CHECK SPIRAL CABLE CIRCUIT
    1. Turn ignition switch OFF.
    2. Disconnect driver air bag module harness connectors and spiral cable harness connector.
    3. Check continuity between driver air bag module harness connector and spiral cable connector.
      Driver air bag module Spiral cable Continuity
      Connector Terminal Connector Terminal
      M101 1 M29 30 Yes
      2 23
      M103 3 28
      4 23
    4. Check continuity between driver air bag module harness connector and ground.
      Driver air bag module Ground Continuity
      Connector Terminal
      M101 1 No
      2
      M103 3
      4

      Is the inspection result normal? 

      YES: GO TO 4.

      NO: Replace the spiral cable. Refer to "REMOVAL AND INSTALLATION ".

  4. AIR BAG DIAGNOSIS SENSOR UNIT

    Replace the air bag diagnosis sensor unit. Refer to "REMOVAL AND INSTALLATION ".

    GO TO 5

  5. DRIVER AIR BAG MODULE

    Replace the driver air bag module. Refer to "REMOVAL AND INSTALLATION ".

    GO TO 6

  6. RELATED HARNESS

    Replace the related harness.

    END 

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