85-61
SRS DTC Troubleshooting: 85-61, 85-62
DTC 85-61:
No Signal From the ODS Unit
DTC 85-62:
Incorrect Data From the ODS Unit
NOTE:
- Before doing this troubleshooting procedure, find out if the vehicle was in a collision. If so, verify that all the required components were replaced with new components, of the correct part number, and that they were properly installed Service and Repair.
- Before doing this troubleshooting procedure, review SRS Precautions and Procedures Service and Repair and General Troubleshooting Information Reading and Clearing Diagnostic Trouble Codes, and Battery Terminal Disconnection and Reconnection Procedures.
- Before replacing the SRS unit, check the SRS unit software version with the HDS. If the software version is not the latest, update the SRS unit software Testing and Inspection, and retest.
1. Make sure nothing is on the front passenger's seat.
2. Clear the DTCs with the HDS.
3. Turn the ignition switch to ON (II), then wait for 10 seconds.
4. Check for DTCs with the HDS.
Is DTC 85-61 or 85-62 indicated?
YES -
Go to step 5.
NO -
Intermittent failure, the system is OK at this time. Go to Troubleshooting Intermittent Failures. If another DTC is indicated, troubleshoot the DTC.
5. Turn the ignition switch to LOCK (0).
6. 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 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. 10 (7.5 A) fuse circuit (dashboard wire harness, right side wire harness, or front passenger's seat wire harness); replace the faulty harness, then clear the DTC.
7. Check the connection between the front passenger's seat wire harness 18P connector (A) and the ODS unit (B).
Is the connection OK?
YES -
Go to step 8.
NO -
Repair the poor connection, then clear the DTC, and retest. If DTC 85-61 or 85-62 is still present, go to step 8.
8. Disconnect the front passenger's seat wire harness 18P connector (A) from the ODS unit (B).
9. Turn the ignition switch to ON (II).
10. Measure the voltage between body ground and front passenger's seat wire harness 18P connector terminal No. 1. There should be battery voltage.
Is there battery voltage?
YES -
Go to step 11.
NO -
Open in the dashboard wire harness, the right side wire harness, or the front passenger's seat wire harness; replace the faulty harness, then clear the DTC.
11. Turn the ignition switch to LOCK (0).
12. Measure the resistance between body ground and front passenger's seat wire harness 18P connector terminal No. 12. There should be less than 1.0 Ohms.
Is the resistance as specified?
YES -
Go to step 13.
NO -
Open in the right side wire harness or front passenger's seat wire harness, or poor connection at the front passenger's seat wire harness 18P connector and the ODS unit. Check the ground connection at G651. Check the connection; if the connection is OK, replace the faulty harness, then clear the DTC.
13. Disconnect the negative cable from the battery, then wait at least 3 minutes.
14. Vehicles with ACC: Disconnect E-pretensioner unit connector B (14P) from the E-pretensioner unit.
15. Disconnect SRS unit connector B (39P) from the SRS unit.
16. Measure the resistance between body ground and SRS unit connector B (39P) terminal No. 1. There should be an open circuit or at least 1 MOhms.
Is the resistance as specified?
YES -
Go to step 17.
NO -
Short to ground in the harness between SRS unit connector B (39P) terminal No. 1 and front passenger's seat wire harness 18P connector terminal No. 7 (right side wire harness or front passenger's seat wire harness); replace the faulty harness, then clear the DTC.
17. Measure the resistance between SRS unit connector B (39P) terminal No. 1 and front passenger's seat wire harness 18P connector terminal No. 7. There should be less than 1.0 Ohms.
Is the resistance as specified?
YES -
Go to step 18.
NO -
Open in the harness between SRS unit connector B (39P) terminal No. 1 and front passenger's seat wire harness 18P connector terminal No. 7 (right side wire harness or front passenger's seat wire harness); replace the faulty harness, then clear the DTC.
18. Reconnect the negative cable to the battery.
19. Turn the ignition switch to ON (II).
20. Measure the voltage between body ground and SRS unit connector B (39P) terminal No. 1. There should be less than 0.2 V.
Is the voltage as specified?
YES -
Go to step 21.
NO -
Short to power in the harness between SRS unit connector B (39P) terminal No. 1 and front passenger's seat wire harness 18P connector terminal No. 7 (right side wire harness or front passenger's seat wire harness); replace the faulty harness, then clear the DTC.
21. Replace the ODS unit Service and Repair.
22. Clear the DTCs with the HDS.
23. Turn the ignition switch to ON (II), then wait for 10 seconds.
24. Check for DTCs with the HDS.
Is the DTC 85-61 or 85-62 indicated?
YES -
Replace the OPDS sensor Service and Repair; if DTC is still present, replace the SRS unit Service and Repair.
NO -
The system is OK.