85-61
SRS DTC Troubleshooting: 85-61, 85-62
DTC 85-61: No Signal From the ODS Unit
DTC 85-62: Non-Stipulated Data From the ODS Unit
NOTE:
- Before doing this troubleshooting procedure, review SRS Precautions and Procedures, Technician Safety Information General Troubleshooting Information, Initial Inspection and Diagnostic Overview and Battery Terminal Disconnection and Reconnection. Procedures
1. Clear the DTC memory. Initial Inspection and Diagnostic Overview
2. Turn the ignition switch to ON (II), and check that the SRS indicator comes on for about 6 seconds and then goes off.
3. Read the DTC. Initial Inspection and Diagnostic Overview
Is DTC85-61 or 85-62 indicated?
YES - Go to step 4.
NO - Intermittent failure, the system is OK at this time. Go to Troubleshooting Intermittent Failures. Initial Inspection and Diagnostic Overview If another DTC is indicated, troubleshoot the DTC.
4. Check the No. 8 (7.5 A) fuse in the under-dash fuse/relay box.
Is the fuse OK?
YES - Go to step 5.
NO - Replace the fuse, then turn the ignition switch to ON (II). If the fuse blows again, check for a short in the No. 8 (7.5 A) fuse circuit (dashboard wire harness, floor wire harness, or ODS unit harness).
5. Turn the ignition switch to LOCK (0).
6. Remove the seat-back cover. Front Seat-Back Cover/Pad Replacement
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 ODS unit harness 18P connector terminal No. 1 and body ground. There should be battery voltage.
Is there battery voltage?
YES - Go to step 10.
NO - Open between the No. 8 (7.5 A) fuse in the driver's under-dash fuse/relay box and ODS unit 18P connector terminal No. 1 (dashboard wire harness, floor wire harness, or ODS unit harness); replace the faulty harness, then clear the DTC.
10. Turn the ignition switch to LOCK (0).
11. Measure the resistance between ODS unit 18P connector terminal No. 12 and body ground. There should be less than 1.0 Ohms.
Is resistance as specified?
YES - Go to step 12.
NO - Open between ODS unit 18P connector terminal No 12 and body ground (G603) or poor connection at G603.
12. Disconnect the negative cable from the battery, then wait at least 3 minutes.
13. Disconnect SRS unit connector B (39P) from the SRS unit. Technician Safety Information
14. Measure the resistance between SRS unit connector B (39P) terminal No. 1 and body ground. There should be 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 18P connector terminal No. 7 (dashboard wire harness, 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 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 between SRS unit connector B (39P) terminal No. 1 and ODS unit 18P connector terminal No. 7 (dashboard wire harness, 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 SRS unit connector B (39P) terminal No. 1 and body ground. There should be less than 0.2 V.
Is there battery voltage?
YES - Go to step 19.
NO - Short to power between SRS unit connector B (39P) terminal No. 1 and ODS unit 18P connector terminal No. 7 (dashboard wire harness, 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 DTC. Initial Inspection and Diagnostic Overview
21. Read the DTC. Initial Inspection and Diagnostic Overview
Is DTC 85-61 or 85-62 indicated?
YES - Replace the SRS unit. SRS Unit Replacement
NO - Intermittent failure, the system is OK at this time. Go to Troubleshooting Intermittent Failures. Initial Inspection and Diagnostic Overview If another DTC is indicated, troubleshoot the DTC.