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, review SRS Precautions and Procedures Service and Repair and General Troubleshooting Information Reading and Clearing Diagnostic Trouble Codes.
- 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 SRS Unit Update, and retest.
1. Make sure nothing is on the front passenger's seat.
2. Clear the DTCs with the HDS Reading and Clearing Diagnostic Trouble Codes.
3. Turn the ignition switch to ON (II), or press the engine start/stop button to select the ON mode, then wait for 10 seconds.
4. Check for DTCs with the HDS Reading and Clearing Diagnostic Trouble Codes.
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 Reading and Clearing Diagnostic Trouble Codes. If another DTC is indicated, troubleshoot the DTC.�
5. Turn the ignition switch to LOCK (0), or press the engine start/stop button to select the OFF mode.
6. Check the No. 5 (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), or press the engine start/stop button to select the ON mode. If the fuse blows again, check for a short in the No. 5 (7.5 A) fuse circuit (dashboard wire harness, floor wire harness, or front passenger's seat wire harness); replace the faulty harness, then clear the DTC.�
7. Check the connection between the ODS unit 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 ODS unit 18P connector (A) from the ODS unit (B).
9. Turn the ignition switch to ON (II), or press the engine start/stop button to select the ON mode.
10. Measure the voltage between body ground and ODS unit 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 floor 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), or press the engine start/stop button to select the OFF mode.
12. Measure the resistance between body ground and ODS unit 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 floor wire harness or front passenger's seat wire harness, or poor connection at the ODS unit 18P connector and the ODS unit. Check the ground connection at G651 Harness Locations. 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 Removal and Replacement.
15. Disconnect SRS unit connector B (39P) from the SRS unit Service and Repair.
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 ODS unit 18P connector terminal No. 7 (floor 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 ODS unit 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 ODS unit 18P connector terminal No. 7 (floor 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), or press the engine start/stop button to select the ON mode.
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 ODS unit 18P connector terminal No. 7 (floor wire harness or front passenger's seat wire harness); replace the faulty harness, then clear the DTC.�
21. Replace the ODS unit ODS Unit Replacement.
22. Clear the DTCs with the HDS Reading and Clearing Diagnostic Trouble Codes.
23. Turn the ignition switch to ON (II), or press the engine start/stop button to select the ON mode, then wait for 10 seconds.
24. Check for DTCs with the HDS Reading and Clearing Diagnostic Trouble Codes.
Is the DTC 85-61 or 85-62 indicated?
YES -
Replace the SRS unit SRS Unit Replacement.�
NO -
The system is OK.�