DTC 85-4x

DTC 85-4x (85-40 to 85-49, 85-4A to 85-4F): Internal Failure of the OPDS Unit

NOTE: An incorrect OPDS unit can cause DTC 85-63.

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 85-4x, 85-5x, 85-63, or 85-64 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 Trouble Code Descriptions.

3. Initialize the OPDS unit.
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 - System is OK.

NO - Replace the OPDS unit, and retest.