DTC 85-61

DTC 81-61, 85-61: No Signal from the ODS Unit

DTC 81-62, 85-62: Non-stipulated Data from the ODS Unit

NOTE: 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 81-61, 85-61, 81-62, or 85-62 indicated?

YES - Go to step 4.

NO - Intermittent failure, 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 ODS unit harness 18P connector and the ODS unit.

Is the connection OK?

YES - Go to step 6.

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 to LOCK (0).
6. Check the No. 9 (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 to ON (II). If the fuse blows again, check for a short in the No. 9 (7.5 A) fuse circuit (floor wire harness or ODS unit harness).

7. Disconnect the ODS unit harness 18P connector (A) from the ODS unit.






8. Turn the ignition switch to ON (II).
9. Measure the voltage between the No. 1 terminal of the ODS unit harness 18P connector and body ground. There should be battery voltage.






Is there battery voltage?

YES - Go to step 10.

NO - Open in the floor wire harness or ODS unit harness; replace the faulty harness.

10. Turn the ignition switch to LOCK (0).
11. Measure the resistance between the No. 12 terminal of the ODS unit harness 18P connector and body ground. There should be 0 - 1.0 ohms.






Is the resistance as specified?

YES - Go to step 12.

NO - Open in the ODS unit harness or floor wire harness; replace the faulty harness.

12. Turn the ignition switch to LOCK (0). Disconnect the negative cable from the battery, then wait for 3 minutes.
13. Disconnect SRS unit connector A (28P) from the SRS unit.
14. 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 15.

NO - Short to ground in the dashboard wire harness or floor wire harness; replace the faulty harness.

15. Turn the ignition switch to ON (II), and measure the voltage between the No. 14 terminal of SRS unit connector A (28P) and body ground. There should be 0.5 V or less.






Is the voltage as specified?

YES - Go to step 16.

NO - Short to power in the dashboard wire harness, floor wire harness, or ODS unit harness; replace the faulty harness.

16. Measure the resistance between the No. 14 terminal of the SRS unit connector A (28P) and the No. 7 terminal of the ODS unit harness 18P connector. There should be 0 - 1.0 ohms.






Is the resistance as specified?

YES - Faulty ODS unit or SRS unit; replace the ODS unit. If the problem is stilt present, replace the SRS unit.

NO - Open in the dashboard wire harness or floor wire harness; replace the faulty harness.