DTC 4-3

DTC 4-3: Short to Another Wire or Decreased Resistance in Passenger'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 passenger'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 4-3 indicated?

YES - Go to step 9.

NO - Short in the passenger's seat belt tensioner; replace the passenger'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 driver's seat belt tensioner connector (C).
11. Disconnect the special tool (2 Ohm connector) from the SRS main harness.




12. Disconnect the SRS unit 18P connector (A) from the SRS unit.




13. Check resistance between the No.5 terminal and the No.12 terminal of the SRS unit 18P connector. There should be an open circuit, or at least 1 MOhm.

Is the resistance as specified?

YES - Faulty SRS unit; replace the SRS unit.

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