DTC Troubleshooting: 85-4x, 85-5x, 85-63, 85-64

DTC 85-4x (85-40 to 85-49, 85-4A to 85-4F), 85-5x (85-50 to 85-59, 85-5A to 85-5F), 85-63, 85-64: Internal Failure of OPDS Unit NOTE: An incorrect OPDS unit can cause DTC 85-63. Erase the DTC memory. 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 DTC85-4x, 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 DTC troubleshooting index for troubleshooting details.
Initialize the OPDS. 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.■
NO | - | Replace the OPDS control unit and reset.■