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Home >> Infiniti >> 2015 >> Q40 AWD >> Repair and Diagnosis >> Restraints >> Restraints Control Systems >> SRS Airbag Control System >> DTC/Circuit Diagnosis >> DTC B1137: Side 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. (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 STEP 2  .

    NO 

    Replace harness connector.

  2. CHECK WIRING HARNESS

    Check the wiring harness externals.

    Is the inspection result normal?

    YES 

    GO TO STEP 3  .

    NO 

    Replace wiring harness.

  3. REPLACE AIR BAG DIAGNOSIS SENSOR UNIT

    1. Replace air bag diagnosis sensor unit. Refer to EXPLODED VIEW .
    2. Perform DTC confirmation procedure. Refer to DTC LOGIC .

    Is DTC detected?

    YES 

    GO TO STEP 4  .

    NO 

    INSPECTION END

  4. REPLACE FRONT SIDE AIR BAG MODULE

    1. Replace front LH side air bag module. Refer to EXPLODED VIEW .
    2. Perform DTC confirmation procedure. Refer to DTC LOGIC .

    Is DTC detected?

    YES 

    GO TO STEP 1  .

    NO 

    INSPECTION END