Diesel Data: Automotive Repair

DTC 62-1x

DTC 62-1x (62-10 to 62-19, 62-1A to 62-1F): Open in Front Passenger's Seat Belt Buckle Switch

1. Erase the DTC memory.
2. Connect the HDS to the DLC.
3. Turn the ignition switch ON (II), then buckle and unbuckle the front passenger's seat belt several times.
4. Make sure the HDS communicates with the vehicle and the SRS unit, If it does not, troubleshoot the DLC circuit.
5. From the system menu on the HDS, select SRS, then select SRS again, then select DATA LIST and check the status on the HDS screen for Right Buckle Switch.

Is "OPEN" indicated?

YES -
- If OPEN is indicated only when the front passenger's seat belt is buckled, Go to step 6.
- If OPEN is indicated only when the front passenger's seat belt is unbuckled, Go to step 14.
- If OPEN is indicated only when the front passenger's seat belt is buckled and unbuckled, Go to step 23.

NO - Intermittent failure, system is OK at this time. Go to Troubleshooting Intermittent Failures. Troubleshooting Intermittent Failures
If another DTC is indicated, Go to the DTC Troubleshooting Index. Diagnostic Trouble Code Descriptions

6. Turn the ignition switch OFF.




7. Disconnect the floor wire harness 3P connector from the front passenger's seat belt buckle switch 3P connector (A).




8. Buckle the front passenger's seat belt. Check resistance between the No. 1 and No. 3 terminals of the front passenger's seat belt buckle switch 3P connector. There should be 0-1 Ohm.

Is the resistances specified?

YES - Go to step 9.

NO - Replace the front passenger's seat belt buckle assembly, then erase the DTC.

9. Disconnect the negative cable from the battery, and wait for 3 minutes.
10. Disconnect both seat belt tensioner4P connectors.
11. Disconnect both lap belt tensioner 2P connectors.
12. Disconnect SRS unit connector B (28P) from the SRS unit.




13. Check resistance between the No. 16 terminal of SRS unit connector B (28P) and the No. 3 terminal of the floor wire harness 3P connector. There should be 0-1 ohm.

Is the resistance as specified?

YES - Faulty SRS unit or poor connection at SRS unit connector B (28P) and the SRS unit. Check the connection between the connector and the SRS unit. If the connection is OK, replace the SRS unit.

NO - Open in the floor wire harness; replace the floor wire harness.

14. Turn the ignition switch OFF.




15. Disconnect the floor wire harness 3P connector from the front passenger's seat belt buckle switch 3P connector (A).
16. Unbuckle the front passenger's seat belt.




17. Check resistance between the No. 1 and No. 2 terminals of the front passenger's seat belt buckle switch 3P connector. There should be 0-1 Ohm.

Is the resistance as specified?

YES - Go to step 18.

NO - Replace the front passenger's seat belt buckle assembly, then erase the DTC.

18. Disconnect the negative cable from the battery, and wait for 3 minutes.
19. Disconnect both seat belt tensioner4P connectors.
20. Disconnect both lap belt tensioner 2P connectors.
21. Disconnect SRS unit connector B (28P) from the SRS unit.




22. Check resistance between the No. 15 terminal of SRS unit connector B (28P) and the No. 2 terminal of the floor wire harness 3P connector. There should be 0-1 ohm.

Is the resistance as specified?

YES - Faulty SRS unit or poor connection at SRS unit connector B (28P) and the SRS unit. Check the connection between the connector and the SRS unit. If the connection is OK, replace the SRS unit.

NO - Open in the floor wire harness; replace the floor wire harness.

23. Turn the ignition switch OFF.




24. Disconnect the floor wire harness 3P connector from the front passenger's seat belt buckle switch 3P connector (A).
25. Unbuckle the front passenger's seat belt.




26. Check resistance between the No. 1 terminal of the floor wire harness 3P connector and body ground. There should be 0-1 ohm.

Is the resistance as specified?

YES - Replace the front passenger's seat belt buckle assembly, then erase the DTC.

NO - Open in the floor wire harness or poor ground connection at G501.

If G501 is OK, replace the floor wire harness.