12-3x

SRS DTC Troubleshooting: 12-3x, 12-6x (x can be 0 thru 9 or A thru F)

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

Special Tools Required

- SRS inflator simulator 07SAZ-TB4011A
- SRS simulator lead J 070AZ-SNAA100
- SRS short canceller 070AZ-SAA0100
NOTE:

- Before doing this troubleshooting procedure, review SRS Precautions and Procedures, Service and Repair General Troubleshooting Information, Initial Inspection and Diagnostic Overview and Battery Terminal Disconnection and Reconnection. Procedures

- Before replacing the SRS unit, check the SRS unit software version with the HDS. If the software version is not the latest, update the SRS unit software, SRS Unit Update and retest.

1. Clear the DTC memory. Initial Inspection and Diagnostic Overview

2. Turn the ignition switch to ON (II), or press the engine start/stop button to select the ON mode, 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, the system is OK at this time. Go to Troubleshooting Intermittent Failures. Initial Inspection and Diagnostic Overview If another DTC is indicated, troubleshoot the DTC.


3. Turn the ignition switch to LOCK (0), or press the engine start/stop button to select the OFF mode.

4. Disconnect the negative cable from the battery, then wait at least 3 minutes.

5. Remove the glove box Glove Box Removal/Installation, then disconnect the dashboard wire harness 4P connector (A) from the front passenger's airbag 4P connector.

6. Connect the SRS inflator simulator (2 Ohms connectors) and simulator lead J to the dashboard wire harness.

7. Reconnect the negative cable to the battery.

8. Clear the DTC memory.






9. Read the DTC. Initial Inspection and Diagnostic Overview

Is DTC 12-3x or 12-6x indicated?
YES - Go to step 10.

NO - Short in the front passenger's airbag first or second inflator; replace the front passenger's airbag, Front Passenger's Airbag Replacement then clear the DTC.


10. Turn the ignition switch to LOCK (0), or press the engine start/stop button to select the OFF mode.

11. Disconnect the negative cable from the battery, then wait at least 3 minutes.

12. Disconnect SRS unit connector A (39P) from the SRS unit. Service and Repair

13. Disconnect the SRS inflator simulator from the SRS simulator lead. Do not disconnect the simulator lead from the dashboard wire harness 4P connector.

14. Connect the SRS short cancellers (070AZ-SAA0100) to SRS unit connector A (39P) terminals No 5 and No. 6, and to terminals No. 9 and No. 10.. Service and Repair

15. 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 or poor connection at SRS unit connector A (39P) and the SRS unit. Check the connection between the connector and the SRS unit. If the connection is OK, replace the SRS unit. SRS Unit Replacement

NO - Short to another wire in the dashboard wire harness; replace the dashboard wire harness, then clear the DTC.