SRS System

Control System DTCs

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 and General Troubleshooting Information Reading and Clearing Diagnostic Trouble Codes.
* 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 Programming and Relearning, and retest.

1. Problem verification:

Problem verification
-1. Clear the DTCs with the HDS Reading and Clearing Diagnostic Trouble Codes.

-2. Turn the ignition switch to ON (II), then wait for 10 seconds. Buckle and unbuckle the driver's seat belt several times.

-3. Check for DTCs with the HDS Reading and Clearing Diagnostic Trouble Codes.

Is DTC 61-1x indicated?
-YES- The failure is duplicated. Go to step 2.
-NO- Intermittent failure, the system is OK at this time. Go to Troubleshooting Intermittent Failures Reading and Clearing Diagnostic Trouble Codes. If another DTC is indicated, troubleshoot the DTC.

2. SRS unit check:

SRS unit check
-1. Turn the ignition switch to LOCK (0).

-2. Connect terminals A and B with a jumper wire.









-3. Clear the DTCs with the HDS Reading and Clearing Diagnostic Trouble Codes.

-4. Turn the ignition switch to ON (II), then wait for 10 seconds.

-5. Check for DTCs with the HDS Reading and Clearing Diagnostic Trouble Codes.

Is DTC 61-2x indicated?
-YES- Go to step 3.
-NO- 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. If the DTC does not clear, replace the floor wire harness.

3. Open wire check (FLBC line):

Open wire check (FLBC line)
-1. Turn the ignition switch to LOCK (0).

-2. Remove the jumper wire from SRS unit connector B (39P).

-3. Disconnect the driver's seat belt buckle switch 2P connector (A) on the floor wire harness.





-4. Turn the ignition switch to ON (II), then wait for 10 seconds.

-5. Measure the voltage between test points 1 and 2.









Is there more than 10 V?
-YES- Go to step 4.
-NO- Open in the floor wire harness; replace the floor wire harness, then clear the DTC.

4. Open wire check (GND line):

Open wire check (GND line)
-1. Turn the ignition switch to LOCK (0).

-2. Measure the resistance between test points 1 and 2.









Is there less than 1.0 Ohms?
-YES- Faulty driver's seat belt buckle switch; replace the driver's seat belt buckle assembly Front Seat Belt Buckle Removal and Installation, then clear the DTC.
-NO- Open in the floor wire harness or poor ground connection at G602. If G602 is OK, replace the floor wire harness, then clear the DTC.