61-1x

SRS DTC Troubleshooting: 61-1x (x can be 0 thru 9 or A thru F)

DTC 61-1x ("x" can be 0 thru 9 or A thru F): Open in Driver's Seat Belt Buckle Switch

NOTE:

- Before doing this troubleshooting procedure, review SRS Precautions and Procedures Service and Repair and General Troubleshooting Information. Initial Inspection and Diagnostic Overview

- Before this troubleshooting, review Battery Terminal Disconnection and Reconnection. Procedures

1. Clear the DTC memory. Initial Inspection and Diagnostic Overview

2. Turn the ignition switch to ON (II), then buckle and unbuckle the left side seat belt several times.

3. Read the DTC. Initial Inspection and Diagnostic Overview

Is DTC 61-1x 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. Turn the ignition switch to LOCK (0).

5. Disconnect the left side wire harness or the driver's seat wire harness 3P connector from the driver's seat belt buckle switch 3P connector (A).






6. Buckle the driver's seat belt.
- Measure the resistance between the No. 1 and No. 3 terminals of the left side seat belt buckle switch 3P connector. There should be 0-1 Ohms.

- Measure the resistance between the No. 2 and No. 3 terminals of the same connector. There should be an open circuit or at least 1 MOhms.

Are the resistances as specified?
YES - Go to step 7.

NO - Replace the driver's seat belt buckle assembly, Front Seat Belt Replacement then clear the DTC.






7. Unbuckle the driver's seat belt.
- Measure the resistance between the No. 2 and No. 3 terminals of the driver's seat belt buckle switch 3P connector. There should be less than 1.0 Ohms.

- Measure the resistance between the No. 1 and No. 3 terminals of the same connector. There should be an open circuit or at least 1 MOhms.

Are the resistances as specified?
YES - Go to step 8.

NO - Replace the driver's seat belt buckle assembly, Front Seat Belt Replacement then clear the DTC.






8. Measure the resistance between the No. 3 terminal of the driver's seat wire harness 3P connector and body ground. There should be less than 1.0 Ohms.

Is the resistance as specified?
YES - Go to step 9.

NO - Open in the driver's seat wire harness or left side wire harness, or poor ground connection at G601. If G601 is OK, replace the faulty harness.






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

10. Disconnect both seat belt tensioner 4P connectors from the left side wire harness and right side wire harness. Service and Repair

11. Disconnect SRS unit connector B (28P) from the SRS unit. Service and Repair

12. Measure the resistance between the No. 12 terminal of SRS unit connector B (28P) and the No. 1 terminal of the driver's seat wire harness 3P connector. There should be less than 1.0 Ohms.

Is the resistance as specified?
YES - Go to step 13.

NO - Open in the driver's seat wire harness or left side wire harness; replace the faulty harness.






13. Measure the resistance between the No. 11 terminal of SRS unit connector B (28P) and the No. 2 terminal of the driver's seat wire harness 3P connector. There should be less than 1.0 Ohms.

Is the resistance as specified?
YES - Faulty SRS unit; replace the SRS unit. SRS Unit Replacement

NO - Open in the driver's seat wire harness, left side wire harness, or the driver's under-dash fuse/relay box, or poor connection at the left side wire harness. Check the connection at the left side wire harness and the driver's under-dash fuse/relay box. If the connection is OK, replace the faulty harness or part.