SRS System

Control System DTCs

SRS DTC Troubleshooting: 62-1x

DTC 62-1x ("x" can be 0 thru 9 or A thru F) : Open in the Front Passenger'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:

-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 front passenger's seat belt several times.

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

Is DTC 62-1x 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:

-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 62-2x 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; if the connection is OK, replace the SRS unit Service and Repair. If the DTC does not clear, replace the floor wire harness or the front passenger's seat wire harness.

3. Open wire check (FRBC/WARNING SRS UNIT line):

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

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

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






-4. Turn the ignition switch to ON (II).

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










Is there more than 10 V?
-YES- The FRBC/WARNING SRS UNIT wire is OK. Go to step 4.
-NO- Open in the floor wire harness or the front passenger's seat wire harness; replace the faulty harness, then clear the DTC.

4. 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- The GND wire is OK. Faulty front passenger's seat belt buckle switch; replace the front passenger's seat belt buckle assembly Front Seat Belt Buckle Removal And Installation, then clear the DTC.
-NO- Open in the floor wire harness or the front passenger's seat wire harness; check for a poor ground at G602. If the ground is OK, replace the faulty harness, then clear the DTC.