12-Bx
SRS DTC Troubleshooting: 12-9x, 12-Bx
DTC 12-9x ("x" can be 0 thru 9 or A thru F):
Short to Ground in the Front Passenger's Airbag First Inflator
DTC 12-Bx ("x" can be 0 thru 9 or A thru F):
Short to Ground in the Front Passenger's Airbag Second Inflator
Special Tools Required
- SRS Inflator Simulator 07SAZ-TB4011A
- SRS Simulator Lead J 070AZ-SNAA100
NOTE:
- Before doing this troubleshooting procedure, review SRS Precautions and Procedures Service and Repair, General Troubleshooting Information Reading and Clearing Diagnostic Trouble Codes, 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 with the HDS Reading and Clearing Diagnostic Trouble Codes.
2. Turn the ignition switch to ON (II), or press the engine start/stop button to select the ON mode, then wait for 10 seconds.
3. Check for DTCs with the HDS Reading and Clearing Diagnostic Trouble Codes.
Is DTC 12-9x or 12-Bx indicated?
YES -
Go to step 4.
NO -
Intermittent failure, the system is OK at this time. Go to Troubleshooting Intermittent Failures Reading and Clearing Diagnostic Trouble Codes. If another DTC is indicated, troubleshoot the DTC.�
4. Turn the ignition switch to LOCK (0), or press the engine start/stop button to select the OFF mode.
5. Disconnect the negative cable from the battery, then wait at least 3 minutes.
6. 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.
7. Connect the SRS inflator simulator (2 Ohms connectors) and simulator lead J to the dashboard wire harness 4P connector.
8. Reconnect the negative cable to the battery.
9. Clear the DTC with the HDS Reading and Clearing Diagnostic Trouble Codes.
10. Check for DTCs with the HDS Reading and Clearing Diagnostic Trouble Codes.
Is DTC 12-9x or 12-Bx indicated?
YES -
Go to step 11.
NO -
Short to ground 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.�
11. Turn the ignition switch to LOCK (0), or press the engine start/stop button to select the OFF mode.
12. Disconnect the negative cable from the battery, then wait at least 3 minutes.
13. Disconnect SRS unit connector A (39P) from the SRS unit Service and Repair.
14. Disconnect the SRS inflator simulator from the SRS simulator lead. Do not disconnect the simulator lead from the dashboard wire harness 4P connector.
15. Measure the resistance between each terminal of the SRS simulator lead and body ground. 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 ground in the dashboard wire harness; replace the dashboard wire harness, then clear the DTC.�