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, 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 SRS Unit Update, and retest.

1. Clear the DTCs with the HDS.

2. Turn the ignition switch to ON (II), then wait for 10 seconds.

3. 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.�

4. Turn the ignition switch to LOCK (0).

5. Check the No. 2 (7.5 A) fuse in the auxiliary under-dash fuse holder 2.

Is the fuse OK?

YES -

Go to step 6.

NO -

Replace the fuse, then turn the ignition switch to ON (II). If the fuse blows again, check for short in the auxiliary under-dash fuse holder 2 No. 2 (7.5 A) fuse circuit (right engine compartment wire harness, floor wire harness, or ODS unit harness).�

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





7. Turn the ignition switch to ON (II).

8. Measure the voltage between body ground and ODS unit harness 18P connector terminal No. 1. There should be battery voltage.





Is there battery voltage?

YES -

Go to step 9.

NO -

Open between the No. 2 (7.5 A) fuse in the auxiliary under-dash fuse holder 2 and the ODS unit harness 18P connector terminal No. 1 (right engine compartment wire harness, floor wire harness, or ODS unit harness); replace the faulty harness, then clear the DTC.�

9. Turn the ignition switch to LOCK (0).

10. Measure the resistance between body ground and ODS unit harness 18P connector terminal No. 12. There should be less than 1.0 Ohms





Is the resistance as specified?

YES -

Go to step 11.

NO -

Open in the wire harness between ODS unit harness 18P connector terminal No. 12 and body ground (G605) (floor wire harness, or ODS unit harness) or poor connection at G605; if the connection is OK, replace the faulty harness, then clear the DTC.�

11. Disconnect the negative cable from the battery, then wait at least 3 minutes.

12. Vehicles with ACC: Disconnect E-Pretensioner unit connector B(14P) from the E-Pretensioner unit Removal and Replacement.

13. Disconnect SRS unit connector B (39P) from the SRS unit.

14. 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 15.

NO -

Short to ground between SRS unit connector B (39P) terminal No. 1 and ODS unit harness 18P connector terminal No. 7 (floor wire harness, or ODS unit harness); replace the faulty harness, then clear the DTC.�

15. Measure the resistance between SRS unit connector B (39P) terminal No. 1 and ODS unit harness 18P connector terminal No. 7. There should be less than 1.0 Ohms.






Is the resistance as specified?

YES -

Go to step 16.

NO -

Open in the wire harness between SRS unit connector B (39P) terminal No. 1 and ODS unit harness 18P connector terminal No. 7 (floor wire harness, or ODS unit harness); replace the faulty harness, then clear the DTC.�

16. Reconnect the negative cable to the battery.

17. Turn the ignition switch to ON (II).

18. 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 19.

NO -

Short to power between SRS unit connector B (39P) terminal No. 1 and ODS unit harness 18P connector terminal No. 7 (floor wire harness, or ODS unit harness); replace the faulty harness, then clear the DTC.�

19. Replace the ODS unit ODS Unit Replacement.

20. Clear the DTCs with the HDS.

21. Check for DTCs with the HDS.

Is the DTC 85-61 or 85-62 indicated?

YES -

Replace the SRS unit SRS Unit Replacement.�

NO -

The system is OK at this time.�