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.
- CHECK SPIRAL CABLE CIRCUIT-I
- Turn ignition switch OFF.
- Disconnect driver air bag module harness connector and combination switch (spiral cable) harness connector.
- Check continuity between combination switch (spiral cable) terminals.
Combination switch (spiral cable) Continuity Connector Terminal Connector Terminal M301 10 M301 11 Not existed Is the inspection result normal?
YES: GO TO 4.
NO: Replace combination switch (spiral cable). Refer to "REMOVAL AND INSTALLATION ".
- CHECK SPIRAL CABLE CIRCUIT-II
Check continuity between combination switch (spiral cable) terminals.
Combination switch (spiral cable) Continuity Connector Terminal Terminal M32 28 30 Not existed Is the inspection result normal?
YES: GO TO 5.
NO: Replace combination switch (spiral cable). Refer to "REMOVAL AND INSTALLATION ".
- REPLACE AIR BAG DIAGNOSIS SENSOR UNIT
- Replace air bag diagnosis sensor unit. Refer to "REMOVAL AND INSTALLATION ".
- Perform DTC confirmation procedure. Refer to
"DTC LOGIC ".
Is DTC detected?
YES: GO TO 6.
NO: INSPECTION END
- REPLACE DRIVER AIR BAG MODULE
- Replace driver air bag module. Refer to "REMOVAL AND INSTALLATION ".
- Perform DTC confirmation procedure. Refer to
"DTC LOGIC ".
Is DTC detected?
YES: GO TO 1.
NO: INSPECTION END