DTC 31-3x

DTC 31-3x ("x" can be 0 thru 9 or A thru F): 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

NOTE: Before doing this troubleshooting procedure, review SRS Precautions and Procedures and General Troubleshooting Information.

1. Clear 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. Troubleshooting Intermittent Failures If another DTC is indicated, troubleshoot the DTC.

3. Turn the ignition switch OFF. Disconnect the negative cable from the battery, and wait for 3 minutes.
4. Disconnect the SRS harness 2P connector (A) from the driver's side airbag (B).






5. Connect the SRS inflator simulator (2 ohms connector) and simulator lead E to the SRS harness.
6. Reconnect the negative cable to the battery.
7. Clear the DTC memory.
8. Check for a 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 negative cable from the battery, and wait for 3 minutes.
10. Disconnect SRS unit connector C (28P) from the SRS unit.
11. Disconnect the SRS inflator simulator from SRS simulator lead. Do not disconnect the simulator lead from the SRS harness 2P connector.
12. Connect the SRS short canceller (070AZ-SAA0100) to the No.1 and No.2 terminals of SRS unit connector C (28P).
13. Measure the resistance between the terminals of SRS simulator lead E. There should be an open circuit or at least 1 Mohms.






Is the resistance as specified?

YES - Faulty SRS unit; replace the SRS unit.

NO - Go to step 14.

14. Disconnect SRS harness 28P connector C854 (A) from SRS subharness connector C854 (B).






15. Measure the resistance between the No.21 and No.22 terminals of SRS subharness 28P connector C854. There should be an open circuit or at least 1 Mohms.






Is the resistance as specified?

YES - Short in the SRS harness; replace the SRS harness.

NO - Short in the SRS subharness; replace the SRS subharness.