DTC 12-4

DTC 12-4: Short To Power In Front Passenger's Side Airbag Inflator

Special Tools Required
- SRS inflator simulator 07SAZ-TB4011A
- SRS simulator lead E 07XAZ-S1A0200

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?

YES - Go to step 3.

NO - Intermittent failure, system is OK at this time. Go to Troubleshooting Intermittent Failures.

3. Turn the ignition switch OFF. Disconnect the battery negative cable, and wait for 3 minutes.




4. Disconnect the floor wire harness 2P connector (A) from the front passenger's side airbag connector (B).
5. Connect the SRS inflator simulator (2 Ohm connector) and simulator lead E to the floor wire harness connector.
6. Reconnect the battery negative cable.
7. Erase the DTC memory.
8. Read the DTC.

Is DTC 12-4 indicated?

YES - Go to step 9.

NO - Short to power in the front passenger's side airbag inflator; replace the front passenger's side airbag.

9. Turn the ignition switch OFF. Disconnect the battery negative cable, and wait for 3 minutes.
10. Disconnect the driver's side airbag 2P connector and both seat belt buckle tensioner 4P connectors.
11. Disconnect SRS unit connector B (18P) from the SRS unit.
12. Turn the ignition switch ON (II).




13. Check for voltage between the No. 7 terminal of SRS unit connector B (18P) and body ground, and between the No. 18 terminal and body ground. There should be 0.5 V or less.

Is the voltage as specified?

YES - Faulty SRS unit; replace the SRS unit.

NO - Short to power in the floor wire harness; replace the floor wire harness.