DTC 4-3

DTC 4-3: Short to Another Wire or Decreased Resistance in Front Passenger'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. Initial Inspection and Diagnostic Overview If another DTC is indicated, go to the DTC Troubleshooting Index. Diagnostic Trouble Code Descriptions

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




4. Disconnect the front passenger's seat belt tensioner 2P connector from the floor wire harness(A).
5. Connect the SRS inflator simulator (2 Ohms connector) and the simulator lead C to the floor wire harness 2P connector.
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 front passenger's seat belt tensioner; replace the front passenger's seat belt.

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




10. Disconnect the floor wire harness 4P connector (A) from the dashboard wire harness C504.
11. Connect the SRS inflator simulator (2 Ohms connectors) and the simulator lead F to the dashboard wire harness 4P connector C504.
12. Reconnect the battery negative cable.
13. Erase the DTC memory.
14. Read the DTC.

Is DTC 4-3 indicated?

YES - Go to step 15.

NO - Short in the floor wire harness; replace the floor 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 driver's seat belt tensioner connector (C).




17. Disconnect SRS unit connector A (18P) from the SRS unit.
18. Disconnect the simulator lead from the dashboard wire harness 4P connector.




19. Check resistance between the No. 9 terminal and the No. 18 terminal of SRS unit connector A (18P). 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 dashboard wire harness; replace the dashboard wire harness.