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Diagnosis Procedure

WARNING:

Before servicing, turn ignition switch OFF, disconnect battery negative terminal, and wait 3 minutes or more. (To discharge backup capacitor.)
Never use unspecified tester or other measuring device.

CHECK HARNESS CONNECTOR
Check the harness connector.

Is the inspection result normal?

YES: GO TO 2.

NO: Replace harness connector.
CHECK WIRING HARNESS
Check the wiring harness externals.

Is the inspection result normal?

YES: GO TO 3.

NO: Replace wiring harness.
REPLACE SPIRAL CABLE
1. Replace combination switch (spiral cable). Refer to "REMOVAL AND INSTALLATION ".
2. Perform DTC confirmation procedure. Refer to "DTC LOGIC ".
  Is DTC detected?
  
  YES: GO TO 4.
  
  NO: INSPECTION END
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 5.
  
  NO: INSPECTION END
REPLACE DRIVER AIR BAG MODULE
1. Replace driver air bag module. Refer to "REMOVAL AND INSTALLATION ".
2. Perform DTC confirmation procedure. Refer to "DTC LOGIC ".
  Is DTC detected?
  
  YES: GO TO 1.
  
  NO: INSPECTION END