Diagnosis Procedure
- Before servicing, turn 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.
- CHECK HARNESS CONNECTOR
Check the harness connector for disconnection, looseness or damage.
Is the inspection result normal?
YES
GO TO STEP 2 .
NO-1
Damage: Replace malfunctioning harness and connector.
NO-2
Disconnection or looseness: Securely lock the connector.
- CHECK WIRING HARNESS
Check the wiring harness externals.
Is the inspection result normal?
YES
GO TO STEP 3 .
NO
Replace malfunctioning harness and connector.
- CHECK DTC
Perform each inspection according to the displayed DTC.
Which DTC is displayed?
[B0001-13]
GO TO STEP 4 .
[B0001-12]
GO TO STEP 8 .
[B0001-11]
GO TO STEP 5 .
[B0001-00, B0001-09, B0001-1A]
GO TO STEP 6 .
- CHECK SPIRAL CABLE CIRCUIT 1
- Turn ignition switch OFF.
- Disconnect driver air bag module connector and combination switch (spiral cable) connector.
- Check continuity between spiral cable terminals.
Terminal Continuity 10 30 Existed 11 23
Is the inspection result normal?
YES
GO TO STEP 9 .
NO
Replace spiral cable. Refer to REMOVAL AND INSTALLATION .
- CHECK SPIRAL CABLE CIRCUIT 2
- Turn ignition switch OFF.
- Disconnect driver air bag module connector and combination switch (spiral cable) connector.
- Check continuity between spiral cable terminal and ground.
Terminal Ground Continuity 10 Not existed 11
Is the inspection result normal?
YES
GO TO STEP 9 .
NO
Replace spiral cable. Refer to REMOVAL AND INSTALLATION .
- CHECK SPIRAL CABLE CIRCUIT 3
- Turn ignition switch OFF.
- Disconnect driver air bag module harness connector and combination switch (spiral cable) harness connector.
- Check continuity between spiral cable terminals.
Terminal Continuity 10 11 Not existed
Is the inspection result normal?
YES
GO TO STEP 7 .
NO
Replace spiral cable. Refer to REMOVAL AND INSTALLATION .
- CHECK SPIRAL CABLE CIRCUIT 4
Check continuity between spiral cable terminals.
Terminal Continuity 30 23 Not existed Is the inspection result normal?
YES
GO TO STEP 9 .
NO
Replace spiral cable. Refer to REMOVAL AND INSTALLATION .
- REPLACE SPIRAL CABLE
- Replace spiral cable. Refer to REMOVAL AND INSTALLATION .
- Perform DTC confirmation procedure. Refer to DTC DESCRIPTION .
Is DTC detected?
YES
GO TO STEP 9 .
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 DESCRIPTION .
Is DTC detected?
YES
GO TO STEP 10 .
NO
INSPECTION END
- REPLACE AIR BAG DIAGNOSIS SENSOR UNIT
- Replace air bag diagnosis sensor unit. Refer to REMOVAL AND INSTALLATION .
- Perform DTC confirmation procedure. Refer to DTC DESCRIPTION .
Is DTC detected?
YES
GO TO STEP 1 .
NO
INSPECTION END