DTC 12-8x

DTC 12-8x ("x" can be 0 thru 9 or A thru F): Short to Power in Passenger's Airbag First Inflator

DTC 12-Ax ("x" can be 0 thru 9 or A thru F): Short to Power in Passenger's Airbag Second Inflator

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

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 12-8x or 12-Ax 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, then wait for 3 minutes.
4. Disconnect the passenger's airbag 4P connector (A) from the SRS main harness.






5. Connect the SRS inflator simulator (2 ohms connectors) and SRS simulator lead F to the SRS main harness.
6. Reconnect the negative cable to the battery.
7. Clear the DTC memory.
8. Read the DTC.

Is DTC 12-8x or 12-Ax indicated?

YES - Go to step 9.

NO - Short to power in the passenger's airbag first or second inflator; replace the passenger's airbag.

9. Turn the ignition switch OFF. Disconnect the negative cable from the battery, then 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 SRS main harness 4P connector.
12. Reconnect the negative cable to the battery.
13. Turn the ignition switch ON (II).
14. Measure the voltage between each terminal of the SRS simulator leads and body ground. There should be 0.5 V or less.






Is the voltage 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.

NO - Short to power in the SRS main harness; replace the SRS main harness.