DTC 61-1x
DTC 61-1x (61-10 to 61-19, 61-1A to 61-1F): Open in Driver's Seat Belt Buckle Switch1. Erase the DTC memory.
2. Turn the ignition switch ON (II), then buckle and unbuckle the driver's seat belt several times.
3. Check for a DTC.
Is DTC 61-1x indicated?
YES - Go to step 4.
NO - Intermittent failure, system is OK at this time. Go to Troubleshooting Intermittent Failures. If another DTC is indicated, go to the DTC troubleshooting index.
4. Turn the ignition switch OFF.
5. Disconnect the driver's seat belt buckle switch 3P connector (A).
6. Buckle the driver's seat belt.
- Check resistance between the No.1 and No.3 terminals of the driver's seat belt buckle switch 3Pconnector. There should be 0-1 Ohm.
- Check resistance between the No.1 and No.2 terminals of the same connector. There should be an open circuit, or at least 1 MOhm.
Are the resistance readings as specified?
YES - Go to step 7.
NO - Replace the driver's seat belt buckle assembly, then clear the DTC.
7. Unbuckle the driver's seat belt.
- Check resistance between the No.1 and No.2 terminals of the driver's seat belt buckle switch 3P connector. There should be 0-1 Ohm.
- Check resistance between the No.1 and No.3 terminals of the same connector. There should be an open circuit, or at least 1 MOhm.
Is the resistance as specified?
YES - Go to step 8.
NO - Replace the driver's seat belt buckle assembly, then clear the DTC.
8. Check resistance between the No.1 terminal of the driver's seat wire harness 3P connector and body ground. There should be 0-1 Ohm.
Is the resistance as specified?
YES - Go to step 9.
NO - Open in the driver's seat wire harness or left floor wire harness, or poor ground connection at G631. If G631 is OK, replace the faulty harness.
9. Disconnect the negative cable from the battery.
10. Disconnect both seat belt tensioner 2P connectors (A).
11. Disconnect SRS unit connector B (28P) from the SRS unit.
12. Check resistance between the No.17 terminal of SRS unit connector B (28P) and the No.3 terminal of the driver's seat wire harness 3P connector. There should be 0-1 Ohm.
Is the resistance as specified?
YES - Go to step 13.
NO - Open in the driver's seat wire harness, left floor wire harness or SRS main subharness; replace the faulty harness.
13. Check 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 0-1 Ohm.
Is the resistance as specified?
YES - Replace the SRS unit.
NO - Open in the driver's seat wire harness, left floor wire harness, SRS main subharness, or multiplex control unit; replace the faulty harness or part.