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Home >> Nissan-Datsun >> 2016 >> Maxima SL >> Repair and Diagnosis >> Restraints >> Restraints Control Systems >> SRS Airbag Control System (DTCS) >> DTC Diagnosis >> DTC B0001: Driver Airbag Module >> Diagnosis Procedure

Diagnosis Procedure

  1. HARNESS CONNECTOR

    Visually inspect all applicable harness connectors for the following:

    • Visible damage to connector or terminal
    • Loose terminal
    • Poor connection
      NOTE:

      All harness connectors should be inspected from the air bag diagnosis sensor unit to the end component (including any in-line connectors).

    Is the inspection result normal?

    YES 

    GO TO STEP 2. 

    NO 

    Perform one of the following repairs:

    • Visible damage: Replace the harness.
    • Loose terminal: Secure the terminal.
    • Poor connection: Secure the connection.

  2. CONFIRM DTC

    G-20 CONSULT

    1. Reconnect all harness connectors.
    2. Turn ignition switch ON.
    3. Check DTC.

    Is DTC still current?

    YES 

    GO TO STEP 3. 

    NO 

    Refer to INTERMITTENT INCIDENT .

  3. WIRING HARNESS

    Check the wiring harness for visible damage.

    NOTE:

    The entire wiring harness should be inspected from the air bag diagnosis sensor unit to the end component (including any in-line connectors).

    Is the inspection result normal?

    YES 

    GO TO STEP 4. 

    NO 

    Replace the harness.

  4. 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
      M89 23 M29 4 Yes
      24 6
    4. Check continuity between driver air bag module harness connector and ground.
      Driver air bag module Ground Continuity
      Connector Terminal
      M89 23 No
      24

    Is the inspection result normal?

    YES 

    GO TO STEP 5  .

    NO 

    Replace the spiral cable. Refer to REMOVAL AND INSTALLATION .

  5. CONFIRM DTC

    1. Reconnect all harness connectors.
    2. Turn ignition switch ON.
    3. Check for DTC using CONSULT.

    Is DTC still current?

    YES 

    GO TO STEP 6. 

    NO 

    Refer to INTERMITTENT INCIDENT  .

  6. AIR BAG DIAGNOSIS SENSOR UNIT

    G-20 CONSULT

    1. Replace the air bag diagnosis sensor unit. Refer to REMOVAL AND INSTALLATION .
    2. Turn ignition switch ON.
    3. Check DTC.

    Is DTC still current?

    YES 

    GO TO STEP 7. 

    NO 

    Clear DTC. Inspection End.

  7. DRIVER AIR BAG MODULE

    G-20 CONSULT

    1. Replace the driver air bag module. Refer to REMOVAL AND INSTALLATION .
    2. Turn ignition switch ON.
    3. Check DTC.

    Is DTC still current?

    YES 

    GO TO STEP 8. 

    NO 

    Clear DTC. Inspection End.

  8. RELATED HARNESS

    Replace the related harness.

    Inspection End.

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