VAZ-2123 vehicles use the ignition switch type 2123–3704005 with an anti-theft locking device, a lock to prevent the starter from being turned on again without first turning off the ignition, and a coil for communicating the ignition key transponder with the vehicle anti-theft system
The ignition switch is checked for correct contact closure in different key positions (Table 1), operation of the anti-theft device, and the presence of communication with the vehicle's anti-theft system. Voltage from the battery and generator is supplied to contact "30" (Fig. 1).
Relay K6 is installed in the mounting block to relieve the contacts of the ignition switch.
The locking rod of the anti-theft device must extend if the key is set to position 0 (off) and removed from the lock.
The locking rod must be recessed after turning the key from position 0 (off) to position I (ignition).
The key must be removed from the lock only in position 0.
The locking device against restarting the starter must not allow the key to be turned again from position I (ignition) to position II (starter).
Such a turn must be possible only after the key has been previously returned to position 0 (off).
Removing and installing the switch ignition
Remove the upper and lower steering column covers.
Disconnect the ignition switch wiring harness from the wiring harness
Disconnect the ignition switch wiring harness from the ignition relay
Use a chisel or screwdriver and hammer to remove or drill out the four bolts with self-cutting heads.
Remove the switch from the steering column.
Install the switch in the reverse order of removal, having first sunk the locking rod of the anti-theft device.
To do this, insert the key into the switch and turn it from the "0" position.
Circuits that are switched on in different positions key
Key position - Contacts energized - Circuits switched on:
- 0 - off
- I (ignition) - 30-50 - Engine management system, generator excitation, headlights, turn signal, control instruments, windshield wipers, window lift motors
- II (starter) - 30-50 - Starter and position I