DTC 12-6x

DTC 12-3x ("x" can be 0 thru 9 or A thru F): Short to Another Wire or Decreased Resistance in Front Passenger's Airbag First Inflator

DTC 12-6x ("x" can be 0 thru 9 or A thru F): Short to Another Wire or Decreased Resistance in Front Passenger's Airbag Second Inflator

Special Tools Required
- SRS inflator simulator 07SAZ-TB4011A
- SRS simulator lead F 07XAZ-SZ30100
- SRS short canceller 070AZ-SAA0100

NOTE: Before doing this troubleshooting procedure, review SRS Precautions and Procedures and General Troubleshooting Information.

1. Clear 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 12-3x or 12-6x indicated?

YES - Go to step 3.

NO - Intermittent failure, system is OK at this time. Go to Troubleshooting Intermittent Failures. Troubleshooting Intermittent Failures If another DTC is indicated, troubleshoot the DTC.

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 the dashboard wire harness 4P connector.
6. Reconnect the negative cable to the battery.
7. Clear the DTC memory.
8. Check for a DTC.

Is DTC 12-3x or 12-6x indicated?

YES - Go to step 9.

NO - Short 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.
11. Disconnect the SRS inflator simulator from the SRS simulator lead. Do not disconnect the simulator lead from the dashboard wire harness A 4P connector.
12. Connect four SRS short cancellers (070AZ-SAA0100) to the No.3 and No.4 terminals and the No.9 and No.10 terminals of SRS unit connector A (28P).
13. Measure the resistance between the terminals of both SRS simulator leads. There should be an open circuit or at least 1 Mohms.






Is the resistance as specified?

YES - Faulty SRS unit; replace the SRS unit.

NO - Go to step 14.

14. Disconnect SRS subharness 28P connector C821 (B) from dashboard wire harness A connector C821.






15. Measure the resistance between the No.1 and No.2 terminals and between the No.7 and No.8 terminals of SRS subharness 28P connector C821. There should be an open circuit or at least 1 Mohms.






Is the resistance as specified?

YES - Short in dashboard wire harness A; replace dashboard wire harness A.

NO - Short in the SRS subharness; replace the SRS subharness.