61-1x
SRS DTC Troubleshooting: 61-1x
DTC 61-1x ("x" can be 0 thru 9 or A thru F):
Open in the Driver's Seat Belt Buckle Switch
NOTE:
- Before doing this troubleshooting procedure, find out if the vehicle was in a collision. If so, verify that all the required components were replaced with new components, of the correct part number, and that they were properly installed Service and Repair.
- Before doing this troubleshooting procedure, review SRS Precautions and Procedures Service and Repair, General Troubleshooting Information Reading and Clearing Diagnostic Trouble Codes, and Battery Terminal Disconnection and Reconnection Procedures.
- Before replacing the SRS unit, check the SRS unit software version with the HDS. If the software version is not the latest, update the SRS unit software Testing and Inspection, and retest.
1. Clear the DTCs with the HDS.
2. Turn the ignition switch to ON (II), then buckle and unbuckle the driver's seat belt several times.
3. Check for DTCs with the HDS.
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. If another DTC is indicated, troubleshoot the DTC.
4. From the HDS Main menu, select SRS, then PARAMETER INFORMATION. In the PARAMETER INFORMATION Menu, select Buckle Switch, Seat Position Sensor and check the status on the HDS screen for FRONT LEFT SEAT BELT BUCKLE SWITCH when the seat belt is buckled, and unbuckled.
- If UNBUCKLED is indicated only when the driver's seat belt is unbuckled, go to step 5.
- If BUCKLED is indicated only when the driver's seat belt is buckled, go to step 11.
- If OPEN is indicated only when the driver's seat belt is buckled and unbuckled, go to step 18.
5. Turn the ignition switch to LOCK (0).
6. Disconnect the driver's seat wire harness 4P connector from the driver's seat belt buckle switch 4P connector (A).
7. Buckle the driver's seat belt. Measure the resistance between driver's seat belt buckle switch 4P connector terminals No. 1 and No. 3. There should be less than 1.0 Ohms.
Is the resistance as specified?
YES -
Go to step 8.
NO -
Replace the driver's seat belt buckle assembly, then clear the DTC.
8. Disconnect the negative cable from the battery, then wait for 3 minutes.
9. Disconnect SRS unit connector B (39P) from the SRS unit.
10. Measure the resistance between SRS unit connector B (39P) terminal No. 20 and the driver's seat wire harness 4P connector terminal No. 1. There should be less than 1.0 Ohms.
Is the resistance as specified?
YES -
Faulty SRS unit or poor connection at SRS unit connector B (39P) and the SRS unit. Check the connection between the connector and the SRS unit. If the connection is OK, replace the SRS unit Service and Repair.
NO -
Open in the driver's seat wire harness, left side wire harness, right side wire harness, or poor connection. Check the connection; if the connection is OK, replace the faulty harness, then clear the DTC.
11. Turn the ignition switch to LOCK (0).
12. Disconnect the driver's seat wire harness 4P connector from the driver's seat belt buckle switch 4P connector (A).
13. Unbuckle the driver's seat belt.
14. Measure the resistance between driver's seat belt buckle switch 4P connector terminals No. 2 and No. 3. There should be less than 1.0 Ohms.
Is the resistance as specified?
YES -
Go to step 15.
NO -
Replace the driver's seat belt buckle assembly, then clear the DTC.
15. Disconnect the negative cable from the battery, then wait for 3 minutes.
16. Disconnect SRS unit connector B (39P) from the SRS unit.
17. Measure the resistance between SRS unit connector B (39P) terminal No. 19 and the driver's seat wire harness 4P connector terminal No. 2. There should be less than 1.0 Ohms.
Is the resistance as specified?
YES -
Faulty SRS unit or poor connection at SRS unit connector B (39P) and the SRS unit. Check the connection between the connector and the SRS unit. If the connection is OK, replace the SRS unit Service and Repair.
NO -
Open in the driver's seat wire harness, left side wire harness, right side wire harness, or poor connection. Check the connection; if the connection is OK, replace the faulty harness, then clear the DTC.
18. Turn the ignition switch to LOCK (0).
19. Disconnect the driver's seat wire harness 4P connector from the driver's seat belt buckle switch 4P connector (A).
20. Unbuckle the driver's seat belt.
21. Measure the resistance between body ground and driver's seat wire harness 4P connector terminal No. 3. There should be less than 1.0 Ohms.
Is the resistance as specified?
YES -
Replace the driver's seat belt buckle assembly, then clear the DTC.
NO -
Open in the driver's seat wire harness, left side wire harness, right side wire harness, or poor connection. Check the connection; if the connection is OK, check for a poor ground at G601. If the ground is OK, replace the faulty harness, then clear the DTC.