85-62
SRS DTC Troubleshooting: 85-61, 85-62
DTC 85-61:
No Signal From the ODS Unit ('08-10 models)
DTC 85-62:
Incorrect Data From the ODS Unit ('08-10 models)
NOTE: Before doing this troubleshooting procedure, review SRS Precautions and Procedures Service and Repair, General Troubleshooting Information Reading and Clearing Diagnostic Trouble Codes, and Battery Terminal Disconnection and Reconnection Procedures.
1. Make sure nothing is on the front passenger's seat.
2. Clear the DTC memory Reading and Clearing Diagnostic Trouble Codes.
3. Turn the ignition switch to ON (II), then wait for 10 seconds.
4. Read the DTC Reading and Clearing Diagnostic Trouble Codes.
Is DTC 85-61 or 85-62 indicated?
YES -
Go to step 5.
NO -
Intermittent failure, system is OK at this time. Go to Troubleshooting Intermittent Failures Reading and Clearing Diagnostic Trouble Codes. If another DTC is indicated, troubleshoot the DTC.�
5. Check the connection between ODS unit harness (with passenger's 4-way power seat) or front passenger's seat wire harness (with passenger's manual seat) 18P connector and the ODS unit ODS Unit Replacement.
Is the connection OK?
YES -
Go to step 6.
NO -
Repair the poor connection, then clear the DTC. If DTC 85-61 or 85-62 is still present, go to step 6.
6. Turn the ignition switch to LOCK (0).
7. 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 8.
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, floor wire harness, front passenger's seat wire harness, or ODS unit harness).�
8. Disconnect the ODS unit harness (with passenger's 4-way power seat) or the front passenger's seat wire harness (with passenger's manual seat) 18P connector (A) from the ODS unit (B).
9. Turn the ignition switch to ON (II).
10. Measure the voltage between ODS unit harness (with passenger's 4-way power seat) or front passenger's seat wire harness (with passenger's manual seat) 18P connector terminal No. 1 and body ground. There should be battery voltage.
Is there battery voltage?
YES -
Go to step 18.
NO -
Go to step 11.
11. Turn the ignition switch to LOCK (0).
12. Disconnect the negative cable from the battery, then wait at least 3 minutes.
13. Disconnect the SRS unit connector A (28P) from the SRS unit Service and Repair.
14. Disconnect dashboard wire harness connector C504 (22P) (A) from floor wire harness connector C504 (22P) (B).
15. Reconnect the negative cable to the battery.
16. Turn the ignition switch to ON (II).
17. Measure the voltage between dashboard wire harness connector C504 (22P) terminal No. 15 and body ground. There should be battery voltage.
Is there battery voltage?
YES -
Open in the floor wire harness, the front passenger's seat wire harness, or the ODS unit harness (with passenger's 4-way power seat); replace the faulty harness, then clear the DTC.�
NO -
Open in the dashboard wire harness; replace the dashboard wire harness, then clear the DTC.�
18. Turn the ignition switch to LOCK (0).
19. Measure the resistance between ODS unit harness (with passenger's 4-way power seat) or front passenger's seat wire harness (with passenger's manual seat) 18P connector terminal No. 12 and body ground. There should be less than 1.0 Ohms.
Is the resistance as specified?
YES -
Go to step 20.
NO -
Open in the ODS unit harness (with passenger's 4-way power seat), the front passenger's seat wire harness, or the floor wire harness; check the connection at G651. If the connection is OK, replace the faulty harness, then clear the DTC.�
20. Turn the ignition switch to LOCK (0).
21. Disconnect the battery negative cable, then wait at least 3 minutes.
22. Disconnect SRS unit connector A (28P) from the SRS unit Service and Repair.
23. Measure the resistance between SRS unit connector A (28P) terminal No. 14 and body ground. There should be an open circuit or at least 1 MOhms.
Is the resistance as specified?
YES -
Go to step 24.
NO -
- Passenger's 4-way power seat: Go to step 29.
- Passenger's manual seat: Go to step 27.
24. Measure the resistance between SRS unit connector A (28P) terminal No. 14 and ODS unit harness (with passenger's 4-way power seat) or front passenger's seat wire harness (with passenger's manual seat) 18P connector terminal No. 7. There should be less than 1.0 Ohms.
Is the resistance as specified?
YES -
Faulty ODS unit or SRS unit; replace the ODS unit ODS Unit Replacement, then clear the DTC. If the DTC is still present, replace the SRS unit SRS Unit Replacement.�
NO -
- Passenger's 4-way power seat: Go to step 25.
- Passenger's manual seat: Go to step 27.
25. Passenger's 4-way power seat: Disconnect front passenger's seat wire harness connector C932 (4P) (A) form ODS unit harness connector C932 (4P) (B).
26. Measure the resistance between SRS unit connector A (28P) terminal No. 14 and front passenger's seat wire harness connector C932 (4P) (with passenger's 4-way power seat) terminal No. 4. There should be less than 1.0 Ohms.
Is the resistance as specified?
YES -
Open in the ODS unit harness (with passenger's 4-way power seat) or the front passenger's seat wire harness; replace the ODS unit harness (with passenger's 4-way power seat) or the front passenger's seat wire harness, then clear the DTC.�
NO -
Go to step 29.
27. Passenger's manual seat: Disconnect floor wire harness connector C931 (13P) (A) from front passenger's seat wire harness connector C931 (13P) (B).
28. Measure the resistance between SRS unit connector A (28P) terminal No. 14 and floor wire harness connector C931 (13P) terminal No. 5. There should be less than 1.0 Ohms.
Is the resistance as specified?
YES -
Open in the front passenger's seat wire harness; replace the front passenger's seat wire harness, then clear the DTC.�
NO -
Open in the dashboard wire harness or the floor wire harness; replace the faulty harness, then clear the DTC.�
29. Passenger's 4-way power seat: Disconnect front passenger's seat wire harness connector C932 (4P) (A) from ODS unit harness connector C932 (4P) (B).
30. Measure the resistance between SRS unit connector A (28P) terminal No. 14 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 ODS unit harness (with passenger's 4-way power seat) or the front passenger's seat wire harness; replace the ODS unit harness (with passenger's 4-way power seat) or the front passenger's seat wire harness, then clear the DTC.�
NO -
Go to step 31.
31. Disconnect floor wire harness connector C931 (13P) (A) from front passenger's seat wire harness connector C931 (13P) (B).
32. Measure the resistance between SRS unit connector A (28P) terminal No. 14 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 front passenger's seat wire harness; replace the front passenger's seat wire harness, then clear the DTC.�
NO -
Short to ground in the dashboard wire harness or the floor wire harness; replace the faulty harness, then clear the DTC.�