DTC 3-4

DTC 3-4: Short to power in driver's seat belt tensioner

Special Tools Required
- SRS inflator simulator 07SAZ-TB4011A
- SRS simulator lead C 07TAZ-SZ5011A
- SRS simulator lead F 07XAZ-SZ30100

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 driver's seat belt tensioner 2P connector from the left side wire harness 2P connector (A).
5. Connect the special tool (2 Ohms connector) to the left side wire harness 2P connector.
6. Reconnect the battery negative cable.
7. Erase the DTC memory.
8. Read the DTC.

Is DTC 3-4 indicated?

YES - Go to step 9.

NO - Short to power in the driver's seat belt tensioner; replace the driver's seat belt.

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




10. Disconnect the left side wire harness 4P connector C803 (A) from the SRS main harness 4P connector (B).
11. Connect the special tool (2 Ohms 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 3-4 indicated?

YES - Go to step 15.

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

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




16. Disconnect the driver's airbag connector (A), front passenger's airbag connector (B), and front passenger's seat belt tensioner connector (C).




17. Disconnect SRS unit connector B (18P) from the SRS unit.
18. Disconnect the special tool from the SRS main harness 4P connector.
19. Reconnect the battery negative cable.
20. Turn the ignition switch ON (II).




21. Check for voltage between the No. 8 terminal of SRS unit connector B (18P) and body ground, and between the No. 17 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 SRS main harness; replace the SRS main harness.