DTC 61-2x
DTC 61-2x (61-20 to 61-29, 61-2A to 61-2F): Short to Ground 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. Read the DTC.
Is DTC 61-2x indicated?
YES - Go to step 4.
NO - Intermittent failure, system is OK at this time. Go to Troubleshooting Intermittent Failures.
4. Turn the ignition switch OFF.
5. Disconnect the driver's seat harness 3P connector from the driver's seat belt buckle switch 3P connector (A).
6. Check for continuity between body ground and driver's seat belt buckle switch 3P connector terminals No.1 and No.2.
Is there continuity?
YES - Replace the driver's seat belt buckle assembly.
NO - Go to step 7.
7. Buckle the driver's seat belt.
Check resistance between the No.1 and No.3 terminals of the driver's seat belt buckle switch 3P connector. There should be 0 - 1 Ohms.
Check 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 resistance readings as specified?
YES - Go to step 8.
NO - Replace the driver's seat belt buckle assembly, then clear the DTC.
8. Unbuckle the driver's seat belt
Check resistance between the No.2 and No.3 terminals of the driver's seat belt buckle switch 3P connector There should be 0 - 1 Ohms,
Check resistance between the No.1 and No.3 terminals of the same connector There should be an open circuit, or at least 1 MOhms.
Is the resistance as specified?
YES - Go to step 9
NO - Replace the driver's seat belt buckle assembly, then clear the DTC.
9. Check resistance between the No.3 terminal of the driver's seat wire harness 3P connector and body ground. There should be 0 - 1 Ohms.
Is the resistance as specified?
YES - Go to step 10
NO - Open in the driver's seat wire harness or floor wire harness, or poor ground connection at G601. If G601 is OK, replace the faulty harness.
10. Disconnect the negative cable from the battery
11. Disconnect both seat belt tensioner 4P connectors from the floor wire harness.
12. Disconnect SRS unit connector B (28P) from the SRS unit.
13. Check resistance between the No.2 terminal of the driver's seat wire harness 3P connector and body ground. There should be an open circuit, or at least 1 MOhm.
Is the resistance as specified?
YES - Go to step 14.
NO - Short to ground in the driver's seat wire harness, floor wire harness, or multiplex control unit. Replace the faulty harness or part.
14. Check resistance between the No.1 terminal of the driver's seat wire harness 3P connector and body ground. There should be an open circuit, or at least 1 MOhm.
Is the resistance as specified?
YES - Replace the SRS unit.
NO - Short to ground in the driver's seat wire harness or floor wire harness; replace the faulty harness.