DTC 31-3x

DTC 31-3x (31-30 to 31-39,31-3A to 31-3F): Short to Another Wire or Decreased Resistance in Driver's Side Airbag Inflator

Special Tools Required
- SRS inflator simulator 07SAZ-TB4011A
- SRS simulator lead E 07XAZ-S1A0200
- SRS short canceller 070AZ-SAA0100

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, and is DTC 31-3x indicated?

YES - Go to step 3.

NO - Intermittent failure, system is OK at this time. Go to Troubleshooting Intermittent Failures. If another DTC is indicated, go to the DTC troubleshooting index.

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




4. Disconnect the floor wire harness 2P connector (A) from the driver's side airbag (A).
5. Connect the SRS inflator simulator (2 Ohms connectors) and the simulator lead to the floor wire harness.
6. Reconnect the battery negative cable.
7. Erase the DTC memory.
8. Read the DTC.

Is DTC 31-3x indicated?

YES - Go to step 9.

NO - Short to another wire in the driver's side airbag inflator; replace the driver's side airbag.

9. Turn the ignition switch OFF. Disconnect the battery negative cable, and wait for 3 minutes.
10. Disconnect both seat belt tensioner 4P connectors.
11. Disconnect SRS unit connector B (28P) from the SRS unit.
12. Disconnect the SRS inflator simulator from SRS simulator lead E.
13. Connect the SRS short canceller (070AZ-SAA0100) to the No.21 and No.22 terminals of SRS unit connector B (28P).




14. Check resistance between the terminals of SRS simulator lead E. There should be an open circuit, or at least.

Is the resistance as specified?

YES - Faulty SRS unit; replace the SRS unit.

NO - Short in the floor wire harness; replace the floor wire harness.