DTC Troubleshooting: 62-1x

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

1.Erase the DTC memory.

2.Turn the ignition switch ON (II), then buckle and unbuckle the front passenger's seat belt several times.

3.Read the DTC.

Is DTC 62-1x indicated?


YES - Go to 4.


NO - Intermittent failure, system is OK at this time. Go to Troubleshooting Intermittent Failures.


4.Turn the ignition switch OFF.

5.Disconnect the front passenger's seat belt buckle switch 3P connector (A) from the front passenger's seat subharness.

 

6.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 W.

Check resistance between the No. 1 and No. 2 terminals of the same connector. There should be an open circuit or at least 1 MW.

 

Is the resistance as specified?


YES - Go to 7.


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

7.Unbuckle the front passenger's seat belt.

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 W.

Check resistance between the No. 1 and No. 3 terminals of the same connector. There should be an open circuit, or at least 1 MW.

 

Are the resistance as specified?


YES - Go to 8.


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

8.Check resistance between the No. 1 terminal of the front passenger's seat subharness 3P connector or floor wire harness 3P connector and body ground. There should be 0-1 W.

 

Is the resistance as specified?


YES - Go to 9.


NO - Open in the front passenger's seat subharness or floor wire harness, or poor ground connection at G552. If G552 is OK, replace the faulty harness.n


9.Disconnect the negative cable from the battery.

10.Disconnect both seat belt tensioner 2P connectors from the floor wire harness.

11.Disconnect SRS unit connector B (28P) from the SRS unit.

12.Check resistance between the No. 16 terminal of SRS unit connector B (28P) and the No. 3 terminal of the front passenger's seat subharness 3P connector or floor wire harness 3P connector.
There should be 0-1 W.

 

Is the resistance as specified?


YES - Go to 13.


NO - Open in the front passenger's seat subharness or floor wire harness; replace the faulty harness.n

13.Check resistance between the No. 15 terminal of SRS unit connector B (28P) and the No. 2 terminal of the front passenger's seat subharness 3P connector or floor wire harness 3P connector.
There should be 0-1 W.

 

Is the resistance as specified?


YES - Replace the SRS unit.n


NO - Open in the front passenger's seat subharness or floor wire harness; replace the faulty harness.n