At the ignition switch, the correct closure of the contacts is checked at various key positions (tab. 7-3), the operation of the anti-theft device and the presence of communication with the car anti-theft system. The voltage from the battery and the generator is supplied to the contact «30» (pic. 7-3). To unload the contacts of the ignition switch, a K6 relay is installed in the mounting block.
Pic. 7-3. Ignition Switch Wiring Diagram (with key inserted):
Table 7-3. Switchable circuits at various key positions
The locking rod of the anti-theft device must extend when the key is set to position 0 (turned off) and take it out of the castle. The locking rod must retract when the key is turned from position 0 (turned off) to position I (ignition). The key must only be removed from the lock 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 should only be possible after the key has been previously returned to position 0 (turned off).
car anti-theft system (immobilizer) has a special indication in the block of control lamps, which turns on in the following cases:
- if the APS is not activated, then after the ignition is turned on, the control lamp turns on and burns as long as the ignition is on. In this case, you must contact the service station to activate it;
- if the control lamp flashes when the ignition is switched on, then the APS is faulty and you should contact a service station to eliminate the malfunction;
- when using a learning key (ignition key with red insert on the end) the control lamp flashes for 6 seconds when the ignition is turned off.