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. Read the DTC. Initial Inspection and Diagnostic Overview
Is DTC85-61 or 85-62 indicated?
YES - Go to step 3.
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.
3. Check the No. 12 (7.5 A) fuse in the driver's under-dash fuse/relay box.
Is the fuse OK?
YES - Go to step 4.
NO - Replace the fuse, then turn the ignition switch to ON (II). If the fuse blows again, check for a short in the No. 12 (7.5 A) fuse circuit (dashboard wire harness, SRS floor wire harness, or ODS unit harness).
4. Disconnect the ODS unit harness 18P connector (A) from the ODS unit.
5. Turn the ignition switch to ON (II).
6. Measure the voltage between the terminal No. 1 of the ODS unit harness 18P connector and body ground. There should be battery voltage.
Is there battery voltage?
YES - Go to step 7.
NO - Open between the No. 12 (7.5 A) fuse in the driver's under-dash fuse/relay box and the terminal No. 1 of the ODS unit 18P connector (dashboard wire harness, SRS floor wire harness, or ODS unit harness); replace the faulty harness.
7. Turn the ignition switch to LOCK (0).
8. Measure the resistance between the terminal No. 12 of the ODS unit harness 18P connector and body ground. There should be less than 1.0 Ohms
Is resistance as specified?
YES - Go to step 9.
NO - Open between the No. 12 terminal of the ODS unit 18P connector and body ground (G702) or poor connection at G702.
9. Disconnect the negative cable from the battery, then wait at least 3 minutes.
10. Disconnect SRS unit connector B (39P) from the SRS unit. Technician Safety Information
11. Measure the resistance between the terminal No. 1 of SRS unit connector B (39P) and body ground. There should be an open circuit or at least 1 MOhms.
Is the resistance as specified?
YES - Go to step 12.
NO - Short to ground between the terminal No. 1 of SRS unit connector B (39P) and the terminal No. 7 of the ODS unit 18P connector (dashboard wire harness, SRS floor wire harness, or ODS unit harness); replace the faulty harness.
12. Measure the resistance between the terminal No. 1 of SRS unit connector B (39P) and the terminal No. 7 of the ODS unit 18P harness connector. There should be less than 1.0 Ohms.
Is the resistance as specified?
YES - Go to step 17.
NO - Open between the terminal No. 1 of the SRS unit connector B (39P) and the terminal No. 7 of the ODS unit 18P connector (dashboard wire harness, SRS floor wire harness, or ODS unit harness); replace the faulty harness.
13. Reconnect the negative cable to the battery.
14. Turn the ignition switch to ON (II).
15. Measure the voltage between the terminal No. 1 of SRS unit connector B (39P) and body ground. There should be less than 0.2 V.
Is there battery voltage?
YES - Go to step 16.
NO - Short to power between the terminal No. 1 of SRS unit connector B (39P) and the terminal No. 7 of the ODS unit 18P connector (dashboard wire harness, SRS floor wire harness, or ODS unit harness); replace the faulty harness.
16. Replace the ODS unit. ODS Unit Replacement
17. Clear the DTC. Initial Inspection and Diagnostic Overview
18. 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.