1. Remove the steering column trim (see "Decorative overlays of a steering column - removal and installation").
2. Disconnect the switch harness pads (castle) ignition.
3. Multimeter (in ohmmeter mode) we check the serviceability of the closure of the terminals in the block.
Note: Perform the test when the key is in position 0 - "turned off". Then check the contact closure in position I - "included" and II- "starter".
The order of closing the contacts is shown in the figure.
We replace the ignition lock with a faulty contact group.