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, then disconnect the battery negative cable, and wait for 3 minutes.




4. Disconnect the driver's seat belt tensioner 2P connector from the SRS main harness (A).
5. Connect the SRS inflator simulator (2 Ohm connector) and the simulator lead to the SRS main harness.
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 driver's seat belt tensioner; replace the driver's seat belt.

9. Turn the ignition switch OFF, then disconnect the battery negative cable, and wait for 3 minutes.




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




11. Disconnect the SRS unit 18P connector (A) from the SRS unit.
12. Disconnect the special tool from the SRS main harness.
13. Reconnect the battery negative cable.
14. Turn the ignition switch ON (II).




15. Check for voltage between the No.4 terminal of the SRS unit 18P connector and body ground, and the No.11 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.