The APS-6 immobilizer consists of a control unit and a control lamp in the instrument cluster, a communication coil in the ignition lock, a working key in the remote control and a training key with a red label. The immobilizer operating modes are displayed by turning on the signaling device and the signals of the buzzer built into it.
The standard immobilizer control unit is connected to the controller via the diagnostic line (tab. 9.9). The immobilizer control unit has a built-in relay that connects the diagnostic connector to the controller or disables it. If no diagnostic tool is connected to the diagnostic connector, the relay opens the diagnostic circuit and the line is used to communicate with the controller and the control unit. When the device is connected to the diagnostic connector, the relay closes the diagnostic circuit, which allows the exchange of information between the device and the controller. However, the immobilizer control unit has priority over the diagnostic tool when working with the controller, if necessary, the immobilizer control unit interrupts the communication between the controller and the device (for example, to exchange information between the control unit and the controller when starting the engine).
The immobilizer control unit and the controller can be in one of two states:
- 1 state - the immobilization function is disabled. In this state, the immobilizer control unit is turned off, there is no communication between it and the controller, engine blocking is impossible;
- 2 state - immobilization function is enabled (trained state). In this state, it is possible to block the engine, unlocking is carried out by receiving the correct password from the immobilizer control unit by the controller.
The controller and the immobilizer control unit enter the learned state after learning the working keys using the learning key. At the end of the training procedure, both blocks go into the trained state.
Table 9.9. Assignment of the outputs of the control unit of the standard immobilizer
| Contacts | Address |
| 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 | ignition switch, «plus» coupling coils Mounting block, power window relay (winding) No connection Light control module, headlight switch Rear fog lights Battery, terminal «+» Battery, terminal «+» Light control module, fog light switch Diagnostic block, K-line Interior lighting dome ignition switch, «minus» coupling coils Reversing lamp switch Light control module, position light switch Electrical package control unit, contact «15» (driver door sensor signal) Rear fog lights Frame Battery, terminal «+» ECM, contact «71» (W-line) Instrument Cluster, Immobilizer Warning Light Ignition switch, terminal «15» |