DTC 4-2

DTC 4-2: Increased 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 4-1 or DTC 4-2 indicated?

YES - Go to step 9.

NO - Open or increased resistance 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 SRS unit 18P connector (A) from the SRS unit. Do not disconnect the special tool from the SRS main harness.




12. Check resistance between the No.5 terminal and the No.12 terminal of the SRS unit 18P connector. There should be 2,0 - 3.0 Ohm.

Is the resistance as specified?

YES - Faulty SRS unit or poor contact at the SRS unit 18P connector and the SRS unit. Check the connection; if the connection is OK, replace the SRS unit.

NO - Open or increased resistance in the SRS main harness; replace the SRS main harness.