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Home >> Infiniti >> 2012 >> QX56 AWD >> Repair and Diagnosis >> Restraints >> Restraints Control Systems >> SRS Airbag Control System >> DTC/Circuit Diagnosis >> DTC B1201: Curtain Air Bag Module LH >> Diagnosis Procedure
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Diagnosis Procedure

WARNING:
  • Before servicing, turn ignition switch OFF, disconnect battery negative terminal, and wait at least 3 minutes or more. (To discharge backup capacitor.)
  • Never use unspecified tester or other measuring device.
  1. CHECK HARNESS CONNECTOR

    Check the harness connector.

    Is the inspection result normal? 

    YES: GO TO 2.

    NO: Replace harness connector.

  2. CHECK WIRING HARNESS

    Check the wiring harness externals.

    Is the inspection result normal? 

    YES: GO TO 3.

    NO: Replace wiring harness.

  3. REPLACE AIR BAG DIAGNOSIS SENSOR UNIT
    1. Replace air bag diagnosis sensor unit. Refer to "REMOVAL AND INSTALLATION ".
    2. Perform DTC confirmation procedure. Refer to "DTC LOGIC ".

      Is DTC detected? 

      YES: GO TO 4.

      NO: INSPECTION END

  4. REPLACE FRONT CURTAIN AIR BAG MODULE
    1. Replace front curtain air bag module LH. Refer to "REMOVAL AND INSTALLATION "
    2. Perform DTC confirmation procedure. Refer to "DTC LOGIC ".

      Is DTC detected? 

      YES: GO TO  1.

      NO: INSPECTION END