DTC 12-4x

DTC 12-1x ("x" can be 0 thru 9 or A thru F) Open or Increased Resistance in Front Passenger's Airbag First Inflator

DTC 12-4x ("x" can be 0 thru 9 or A thru F) Open or 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 12-1x or 12-4x 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, go to the DTC Troubleshooting Index. DTC List - Supplemental Restraint System

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 ohm connectors) and simulator lead F to the dashboard wire harness A 4F connector.
6. Reconnect the negative cable to the battery.
7. Erase the DTC memory.
8. Check for a DTC.

Is DTC 12-1x or 12-4x 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 .
11. Disconnect the SRS Inflator simulator from SRS simulator lead. Do not disconnect the simulator lead from the dashboard wire harness A 4P connector.




12. Check resistance between the terminals of both SRS simulator leads. There should be less than 1 ohm.

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 - Go to step 13.




13. Disconnect SRS subharness 28P connector C821 (B) from dashboard wire harness A connector C 821.




14. Check resistance between the No. 1 and the No. 2 terminals and between the No. 7 and the No. 8 terminals of SRS subharness 28P connector C821. There should be less than 1 ohm.

Is the resistance as specified?

YES - Open or increased resistance in dashboard wire harness A replace dashboard wire harness A.

NO - Open or increased resistance in the SRS subharness replace the SRS subharness.