DTC 85-62
DTC 85-61: No Signal from OPDS UnitDTC 85-62: Non-stipulated Response Data
NOTE: A new (uninitialized) OPDS unit installed with a faulty OPDS sensor can also cause DTC 85-71.
1. Make sure nothing is on the front passenger's seat.
2. Erase the DTC memory.
3. Read the DTC.
Is DTC 85-61 or 85-62 indicated?
YES - Go to step 4.
NO - Intermittent failure, system is OK at this time. Go to Troubleshooting Intermittent Failures. Initial Inspection and Diagnostic Overview If another DTC is indicated, go to the DTC Troubleshooting Index. Diagnostic Trouble Code Descriptions
4. Check the connection between the OPDS unit harness 8P connector D and the OPDS unit.
Is the connection OK?
YES - Go to step 5.
NO - Repair the poor connection and retest. If DTC 85-61 or 85-62 is still present, go to step 5.
5. Turn the ignition switch OFF.
6. Check the No. 10 (7.5 A) fuse in the under-dash fuse/relay box.
Is the fuse OK?
YES - Go to step 7.
NO - Replace the fuse, then turn the ignition switch ON (II). If the fuse blows again, check for a short in the No. 10 (7.5 A) fuse circuit (dashboard wire harness, floor wire harness, or OPDS unit harness).
7. Disconnect the OPDS unit harness 8P connector D from the OPDS unit
8. Turn the ignition switch ON (II).
9. Check for voltage between the No. 4 terminal of the OPDS unit 8P connector D and body ground. There should be battery voltage.
Is there battery voltage?
YES - Go to step 14.
NO - Go to step 10.
10. Turn the ignition switch OFF.
11. Disconnect dashboard wire harness 8P connector C502 (A) from the floor wire harness connector C502 (B).
12. Turn the ignition switch ON (II).
13. Check for voltage between the No. 4 terminal of the dashboard wire harness 8P connector C502 and body ground. There should be battery voltage.
Is there battery voltage?
YES - Open in the WHT wire of the floor wire harness or OPDS unit harness; replace the faulty harness.
NO - Open in the WHT wire of the dash board wire harness, poor connection at connection N, or faulty under-dash fuse/relay box; replace the dashboard wire harness or faulty part.
14. Turn the ignition switch OFF.
15. Check resistance between the No. 8 terminal of the OPDS unit 8P connector D and body ground. There should be 0-1.0 Ohm
Is the resistance as specified?
YES - Go to step 16.
NO - Open in the OPDS unit harness or floor wire harness or poor ground at G602. If the connection is OK, replace the faulty harness.
16. Turn the ignition switch OFF. Disconnect the battery negative cable, and wait for 3 minutes.
17. Disconnect both seat belt tensioner 4P connectors.
18. Disconnect SRS unit connector B (28P) from the SRS unit.
19. Check resistance between the No. 27 terminal of SRS unit connector B (28P) and body ground. There should be an open circuit or at least 1 MOhms.
Is the resistance as specified?
YES - Go to step 20.
NO - Go to step 23.
20. Check resistance between the No. 27 terminal of SRS unit connector B (28P) and the No. 7 terminal of the OPDS unit 8P connector D. There should be 0-1.0 Ohm.
Is the resistance as specified?
YES - Faulty OPDS unit or SRS unit; replace the OPDS unit. If the problem is still present, replace the SRS unit.
NO - Go to step 21.
21. Disconnect the floor wire harness 4P connector (A) from the OPDS unit harness.
22. Check resistance between the No. 27 terminal of SRS unit connector B (28P) and the No. 4 terminal of the floor wire harness 4P connector. There should be 0-1.0 Ohm.
Is the resistance as specified?
YES - Open in the OPDS unit harness; replace the OPDS unit harness.
NO - Open in the floor wire harness; replace the floor wire harness.
23. Disconnect floor wire harness 4P connector (A) from OPDS unit harness.
24. Check resistance between the No. 27 terminal of SRS unit connector B (28P) and body ground. There should be an open circuit or at least 1 MOhms.
Is the resistance as specified?
YES - Short to ground in the OPDS unit harness; replace the OPDS unit harness.
NO - Short to ground in floor wire harness; replace the floor wire harness.