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Diagnosis Procedure
warning
  • Before servicing, 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?
.
Replace harness connector.
 
2.CHECK WIRING HARNESS
Check the wiring harness externals.
Is the inspection result normal?
Replace wiring harness.
 
3.CHECK SPIRAL CABLE CIRCUIT
  1. Ignition switch OFF.
  2. Disconnect driver air bag module connector and spiral cable connector.
  3. Check continuity between spiral cable terminals.
    TerminalContinuity
    3937 Not existed
    38
    4037
Is the inspection result normal?
.
Replace spiral cable. Refer to Removal and Installation.
 
4.REPLACE DRIVER AIR BAG MODULE
  1. Replace driver air bag module. Refer to Removal and Installation.
  2. Perform DTC confirmation procedure. Refer to DTC Description.
Is DTC detected?
.
INSPECTION END
 
5.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 Description.
Is DTC detected?
.
INSPECTION END