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 light comes on for about 6 seconds and then goes off.

Does the SRS indicator light 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 right side wire harness 2P connector (A) from the front passenger's side airbag (B).
5. Connect the special tool (2 Ohm connector) to the right side wire 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 right side wire harness 4P connector C583 (A) from the SRS main harness 4P connector (B).
11. Connect the special tool (2 Ohm connectors) to the SRS main harness 4P connector.
12. Reconnect the battery negative cable.
13. Erase the DTC memory.
14. Read the DTC.

Is DTC 12-4 indicated?

YES - Go to step 15.

NO - Short to power in the right side wire harness replace the right side wire harness.

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




16. Disconnect the left side wire harness 2P connector (A) from the driver's side airbag (B).




17. Disconnect SRS unit connector B (1 4P) from the SRS unit.




18. Check resistance between the No.14 and No.6 terminals of SRS unit connector B (14P), and between the No.14 and No.7 terminals. There should be 1 M Ohm or more.

Is the resistance as specified?

YES - Faulty SRS unit; replace the SRS unit.

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