DTC 31-1x

DTC 31-1x ("x" can be 0 thru 9 or A thru F): Open in Driver's Side Airbag Inflator

DTC 31-2x ("x" can be 0 thru 9 or A thru F): Increased Resistance in Driver's Side Airbag Inflator

Special Tools Required
- SRS inflator simulator 07SAZ-TB4011A
- SRS simulator lead E 07XAZ-S1A0200

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 31-1x or 31-2x indicated?

YES - Go to step 3.

NO - Intermittent failure, the 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, then wait for 3 minutes.
4. Disconnect the left side wire harness 2P connector (A) from the driver's side airbag (B).






5. Connect the SRS inflator simulator (2 ohms connectors) and simulator lead E to the left side wire harness.
6. Reconnect the negative cable to the battery.
7. Clear the DTC memory.
8. Read the DTC.

Is DTC 31-1x or 31-2x indicated?

YES - Go to step 9.

NO - Open or increased resistance 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, then wait for 3 minutes.
10. Disconnect SRS unit connector C (28P) from the SRS unit.
11. Disconnect the SRS inflator simulator from the SRS simulator lead.
12. Measure the resistance between the terminals of the SRS simulator lead. There should be 1.0 ohms or less.






Is the resistance as specified?

YES - Faulty SRS unit or poor connection at SRS unit connector C (28P) and the SRS unit. Check the connection; if the connection is OK, replace the SRS unit.

NO - Go to step 13.

13. Disconnect right side wire harness 16P connector C604 (A) from the left side wire harness connector C604 (B).






14. Measure the resistance between the No. 13 [No. 1] and No. 14 [No. 7] terminals of the right side wire harness 16P connector C604. There should be 1.0 ohm or less.

[] :'06-08 models






Is the resistance as specified?

YES - Open or increased resistance in the left side wire harness; replace left side wire harness.

NO - Open or increased resistance in the right side wire harness; replace the right side wire harness.