DTC Troubleshooting: B1925

DTC B1925:  Ignition Key Switch Signal Error

1.Clear the DTCs with the HDS.

2.Turn the ignition switch OFF and remove the ignition key.

3.Insert the ignition key into the ignition switch, and turn the ignition switch ON (II).

4.Check for DTCs with the HDS.

Is DTC B1925 indicated?


YES - Go to 5.


NO - Intermittent failure, the system is OK at this time. Check for loose or poor connections at the immobilizer-keyless control unit 7P connector and at the ignition key switch 6P connector.n


5.Turn the ignition switch OFF and remove the ignition key.

6.Disconnect the ignition key switch 6P connector.

7.At the ignition key switch side, check for continuity between the ignition key switch 6P connector No. 1 and No. 2 terminals.

 

Is there continuity?


YES - Faulty ignition key switch or short to ground, replace the steering lock assembly.n


NO - Go to 8.

8.Insert the ignition key into the ignition switch.

9.At the ignition key switch side, check for continuity between the ignition key switch 6P connector No. 1 and No. 2 terminals.

 

Is there continuity?


YES - Go to 10.


NO - Faulty ignition key switch, replace the steering lock assembly.n


10.Disconnect the immobilizer-keyless control unit 7P connector.

11.Check for continuity between the immobilizer-keyless control unit 7P connector No. 6 terminal and the ignition key switch 6P connector No. 1 terminal.

 

Is there continuity?


YES - Go to 12.


NO - Repair an open in the wire.n

12.Check for continuity between the immobilizer-keyless control unit 7P connector No. 6 terminal and body ground.

 

Is there continuity?


YES - Repair a short to ground in the wire.n


NO - Replace the immobilizer-keyless control unit.n