LEMON Manuals: Even more car manuals for everyone
Home >> Toyota >> 2004 >> Highlander Limited, FWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 920 (SRS Airbag Control System) >> DTC/Circuit Diagnosis >> DTC B1049 - B1052, B1054 - B1057: Driver Airbag Module >> Diagnosis Procedure (Component Diagnosis)

Diagnosis Procedure (Component Diagnosis)

WARNING: This page is about a different car, the 2013 Nissan Armada. 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 combination switch (spiral cable) harness connector.
    3. Check continuity between driver air bag module harness connector and combination switch (spiral cable) connector.
      Driver air bag module Combination switch (spiral cable) Continuity
      Connector Terminal Connector Terminal
      M101 10 M29 30 Yes
      11 23
      M103 12 28
      13 23
    4. Check continuity between driver air bag module harness connector and ground.
      Driver air bag module Ground Continuity
      Connector Terminal
      M101 10 No
      11
      M103 12
      13

      Is the inspection result normal? 

      YES: GO TO 4.

      NO: Replace the combination switch (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