DTC Troubleshooting: 85-79

DTC 85-79:  OPDS Sensor Drift Check Failure

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 85-79 indicated?


YES - Turn the ignition switch OFF, and go to 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.Make sure nothing is on the front passenger's seat.

4.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 go off?


YES - The system is OK.n


NO - Go to 5.


5.Initialize the OPDS unit.

6.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 go off?


YES - The system is OK.n


NO - Replace the OPDS unit and retest. If the problem is still present, replace the OPDS sensor/seat-back.n