81-79

SRS DTC Troubleshooting: 81-79

DTC 81-79:

Front Passenger's Weight Sensors Initial Check Failure

NOTE:

- Before doing this troubleshooting procedure, find out if the vehicle was in a collision. If so, verify that all the required components were replaced with new components, of the correct part number, and that they were properly installed Service and Repair.
- Before doing this troubleshooting procedure, review SRS Precautions and Procedures Service and Repair and General Troubleshooting Information Reading and Clearing Diagnostic Trouble Codes.

1. Clear the DTC memory.

2. Turn the ignition switch to ON (II), then wait for 10 seconds.

3. Read the DTC.

Is DTC 81-79 indicated?

YES -

Go to step 4.

NO -

Intermittent failure, the system is OK at this time. Go to Troubleshooting Intermittent Failures. If another DTC is indicated, troubleshoot the DTC.�

4. Turn the ignition switch to LOCK (0).

5. Make sure nothing is on the front passenger's seat.

6. Clear the DTC memory.

7. Turn the ignition switch to ON (II), then wait for 10 seconds.

8. Read the DTC.

Is DTC 81-79 indicated?

YES -

Go to step 9.

NO -

The system is OK at this time.�

9. Turn the ignition switch to LOCK (0).

10. Loosen the front passenger's seat mounting bolts, and shake the seat in all directions. Tighten the seat mounting bolts to the specified torque.

11. Clear the DTC memory.

12. Do the front passenger's weight sensor initialization, with the HDS, without the HDS.

13. Turn the ignition switch to ON (II), then wait for 10 seconds.

14. Read the DTC.

Is DTC 81-79 indicated?

YES -

Go to step 15.

NO -

The system is OK at this time.�

15. 4-door: Replace the front passenger's seat frame including all four front passenger's weight sensors Front Passenger's Weight Sensor Replacement (4-Door).

16. 2-door: Replace the front passenger's weight sensor assembly Front Passenger's Weight Sensor Replacement (2-Door).

17. Clear the DTC memory.

18. Turn the ignition switch to ON (II), then wait for 10 seconds.

19. Read the DTC.

Is DTC 81-79 indicated?

YES -

Replace the ODS unit ODS Unit Replacement, then clear the DTC, and retest. If the DTC is still present, replace the SRS unit SRS Unit Replacement.�

NO -

The system is OK.�