DTC 85-61
DTC 85-61: No Signal from OPDS UnitNOTE: Before doing this troubleshooting procedure, review SRS Precautions and Procedures and General Troubleshooting Information.
1. Make sure nothing is on the front passenger's seat.
2. Clear the DTC memory.
3. Read the DTC.
Is DTC 85-61 indicated?
YES - Go to step 4.
NO - Intermittent failure, the system is OK at this time. Go to Troubleshooting Intermittent Failures. Troubleshooting Intermittent Failures If another DTC is indicated, troubleshoot the DTC.
4. Check the connection between the OPDS unit harness 8P connector and the OPDS unit.
Is the connection OK?
YES - Go to step 6.
NO - Repair the poor connection and retest. If DTC 85-61 is still present, go to step 5.
5. Clear the DTC.
6. Read the DTC.
Is DTC 85-61 indicated?
YES - Go to step 7.
NO - Intermittent failure, the system is OK at this time. Go to Troubleshooting Intermittent Failures. Troubleshooting Intermittent Failures If another DTC is indicated, troubleshoot the DTC.
7. Turn the ignition switch OFF.
8. Check the No. 10 (7.5 A) fuse in the driver's under-dash fuse/relay box.
Is the fuse OK?
YES - Go to step 9.
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 A, right side wire harness, or OPDS unit harness).
9. Disconnect the OPDS unit harness 8P connector (A) from the OPDS unit.
10. Turn the ignition switch ON (II).
11. Measure the voltage between the No. 4 terminal of the OPDS unit harness 8P connector and body ground. There should be battery voltage.
Is there battery voltage?
YES - Go to step 16.
NO - Go to step 12.
12. Turn the ignition switch OFF.
13. Disconnect dashboard wire harness A 34P connector C651 (A) from the right side wire harness C651 (B).
14. Turn the ignition switch ON (II).
15. Measure the voltage between the No. 34 terminal of dashboard wire harness A 34P connector C651 and body ground. There should be battery voltage.
Is there battery voltage?
YES - Open in the right side wire harness or OPDS unit harness; replace the faulty harness.
NO - Open in the dashboard wire harness A; replace dashboard wire harness A.
16. Turn the ignition switch OFF.
17. Measure the resistance between the No. 8 terminal of the OPDS unit harness 8P connector and body ground. There should be 0-1.0 ohm.
Is the resistance as specified?
YES - Go to step 18.
NO - Open in the OPDS unit harness or right side wire harness; replace the faulty harness.
18. Turn the ignition switch OFF. Disconnect the negative cable from the battery, then wait for 3 minutes.
19. Disconnect SRS unit connector A (28P) from the SRS unit.
20. Measure the resistance between the No. 14 terminal of SRS unit connector A (28P) and body ground. There should be an open circuit or at least 1 Mohms.
Is the resistance as specified?
YES - Go to step 21.
NO - Go to step 24.
21. Measure the resistance between the No. 14 terminal of SRS unit connector A (28P) and the No. 7 terminal of the OPDS unit harness 8P connector. 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 22.
22. Disconnect the right side wire harness 4P connector C801 (A) from the OPDS unit harness.
23. Measure the resistance between the No. 14 terminal of SRS unit connector A (28P) and the No: 4 terminal of right side wire harness 4P connector C801. 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 dashboard wire harness A or right side wire harness; replace the faulty harness.
24. Disconnect right side wire harness 4P connector (A) from the OPDS unit harness.
25. Measure the resistance between the No. 14 terminal of SRS unit connector A (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 dashboard wire harness A or right side wire harness; replace the faulty harness.