DTC 12-21

DTC 12-11: Open in Front Passenger's Airbag First later

DTC 12-21: Increased Resistance in Front Passenger's Airbag First Inflator

DTC 12-41: Open in Front Passenger's Airbag Second Inflator

DTC 12-51: Increased Resistance in Front Passenger's Airbag Second Inflator

Special Tools Required
- SRS inflator simulator 07SAZ-TB4011A
- SRS simulator lead F 07XAZ- SZ30100

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 12-11, 12-21, 12-41, or 12-51 indicated?

YES - Go to step 3.

NO - Intermittent failure, system is OK at this time. Go to Troubleshooting Intermittent Failures. Initial Inspection and Diagnostic Overview If another DTC is indicated, go to the DTC Troubleshooting Index. Diagnostic Trouble Code Descriptions

3. Turn the ignition switch OFF. Disconnect the negative cable from the battery, and wait for 3 minutes.




4. Disconnect the front passenger's airbag 4P connector (A) from dashboard wire harness A.
5. Connect the SRS inflator simulator (2 Ohms connectors) and simulator lead F to dashboard wire harness A.
6. Reconnect the negative cable to the battery.
7. Erase the DTC memory.
8. Read the DTC.

Is DTC 12-11, 12-21, 12-41, or 12-51 indicated?

YES - Go to step 9.

NO - Open or increased resistance in the front passenger's airbag first or second inflator; replace the front passenger's airbag.

9. Turn the ignition switch OFF. Disconnect the negative cable from the battery, and wait for 3 minutes.
10. Disconnect SRS unit connector A (28P) from the SRS unit. Do not disconnect the simulator lead from the dashboard wire harness A 4P connector.
11. Disconnect the SRS inflator simulator from the SRS simulator lead.




12. Check resistance between the terminals of the SRS simulator lead. There should be 1 Ohm or less.

Is the resistance as specified?

YES - Faulty SRS unit or poor connection at SRS unit connector A (28P). Check the connection; if the connection is OK, replace the SRS unit.

NO - Open or increased resistance in dashboard wire harness A; replace dashboard wire harness A.