DTC 12-4

DTC 12-4: Short to power in front passenger's side airbag inflator

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. Disconnect the battery negative cable, and wait for 3 minutes.




4. Disconnect the SRS floor harness 2P connector (A) from the front passenger's side airbag (B).
5. Connect the special tool (2 Ohm) to the SRS floor harness 2P 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. Disconnect the battery negative cable, and wait for 3 minutes.




10. Disconnect the SRS floor harness 2P connector (A) from the front driver's side airbag (B).




11. Disconnect SRS unit connector (A) (14P) from the SRS unit.




12. Check resistance between the No. 14 and No. 6 terminals of SRS unit connector A (14P), and between the No. 14 and No. 7 terminals of SRS unit connector A (14P). There should bean open circuit, or at least 1 MOhm.

Is the resistance as specified?

YES - Faulty SRS unit; replace the SRS unit.

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