| DTC 12-1x (12-10 to 12-19, 12-1A to 12-1F): | Open or Increased Resistance in Driver's Airbag First Inflator (RHD type) |
Special Tools Required
SRS inflator simulator ( 07SAZ-TB4011A)
| 1. | Erase the DTC memory. |
| 2. | Turn the ignition switch ON (II), and check that the SRS indicator comes on for about 6 seconds and then goes off. Does the SRS indicator stay on, and is DTC 12-1x or 12-4x indicated? YES - Go to 3. NO - Intermittent failure, system is OK at this time. Go to Troubleshooting Intermittent Failures. If another DTC is indicated, go to the DTC Troubleshooting Index. |
| 3. | Turn the ignition switch OFF. Disconnect the negative cable from the battery, and wait for 3 minutes. |
| 4. | Disconnect the driver's airbag 4P connector (A) from the cable reel.
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| 5. | Connect the SRS inflator simulator (2 W connectors) and simulator lead J to the cable reel. |
| 6. | Reconnect the negative cable to the battery. |
| 7. | Erase the DTC memory. |
| 8. | Read the DTC. Is DTC 12-1x or 12-4x indicated? YES - Go to 9. NO - Open or increased resistance in the driver's airbag first or second inflator; replace the driver's airbag.n |
| 9. | Turn the ignition switch OFF. Disconnect the negative cable from the battery, and wait for 3 minutes. |
| 10. | Disconnect the dashboard wire harness 4P connector (A) from the cable reel.
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| 11. | Connect the SRS inflator simulator (2 W connectors) and the simulator lead to the dashboard wire harness. |
| 12. | Reconnect the negative cable to the battery. |
| 13. | Erase the DTC memory. |
| 14. | Read the DTC. Is DTC 12-1x or 12-4x indicated? YES - Go to 15. NO - Open or increased resistance in the cable reel; replace the cable reel.n |
| 15. | Turn the ignition switch OFF. Disconnect the negative cable from the battery, and wait for 3 minutes. |
| 16. | Disconnect SRS unit connector A (28P) from the SRS unit. Do not disconnect the simulator lead from dashboard wire harness 4P connector. |
| 17. | Disconnect the SRS inflator simulator from SRS simulator lead. |
| 18. | Check resistance between the terminals of both SRS simulator leads. There should be 1 W or less.
Is the resistance as specified? YES - Faulty SRS unit or poor connection at SRS unit connector A (28P) and the SRS unit. Check the connection between the connector and the SRS unit. If the connection is OK, replace the SRS unit.n NO - Open or increased resistance in dashboard wire harness; replace dashboard wire harness.n |