DTC 12-1x
DTC 12-1x (12-10 to 12-19, 12-1A to 12-1F): Open or Increased Resistance in Front Passenger's Airbag First InflatorDTC 12-4x (12-40 to 12-49, 12-4A to 12-4F): 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. 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 battery negative cable, and wait for 3 minutes.
4. Disconnect the front passenger's airbag 4P connector (A) from the dashboard wire harness (B).
5. Connect the SRS inflator simulator (2 Ohms connectors) and the simulator lead to the dashboard wire harness.
6. Reconnect the battery negative cable.
7. Erase the DTC memory.
8. Read the 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 battery negative cable, 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.
12. Check resistance between the terminals of both SRS simulator leads. 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) and the SRS unit. Check the connection between the connector and the SRS unit. If the connection is OK, replace the SRS unit.
NO - Open or increased resistance in the dashboard wire harness; replace the dashboard wire harness.