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

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




10. Disconnect the SRS main harness 2P connector C 551 (A) from the left side wire harness 2P connector (B).
11. Connect the special tool (2 Ohm connector) to the SRS main harness 2P 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. Turn the ignition switch OFF. 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 A (18P) from the SRS unit.
18. Disconnect the special tool from the SRS main harness 2P 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 A (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 - Go to step 22.

22. Turn the ignition switch OFF.




23. Disconnect the SRS main harness 28P connector (A) from the SRS floor harness 28P connector C851 (B).
24. Turn the ignition switch ON (II).




25. Check for voltage between the No.5 terminal of the SRS main harness 28P connector and body ground and between the No.14 terminal and body ground. There should be 0.5 V or less.

Is the voltage as specified?

YES - Short to power in the SRS floor harness; replace the SRS floor harness.

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