3-Circuit Breaking

Integral with the anti-theft alarm's electronic control module is a "3-circuit breaking" function which takes over control of the following functions when the alarm is armed. This prevents the engine from being started when the alarm is set off, as follows:
- The starter relay (Ignition "ST" +50) receives no operating voltage as +50 is fed to the alarm control module (pin 20) which breaks operating voltage on pin 8 if an attempt is made to start the car.
- The fuel pump relay receives no operating voltage as the alarm control module receives a fuel pump signal on pin 21 from the engine management system. The alarm control module then breaks operating voltage on pin 9 to the fuel pump relay. (The engine receives no fuel - the car cannot be push started either.)
- The engine management system does not receive +15 as the alarm control module (pin 22) breaks the voltage.

Connection
The "3-circuit breaking" function is connected when the rest of the alarm is armed.

Disconnection
The "3-circuit breaking" function is disconnected when the rest of the alarm is disarmed.

Self-arming, 3-circuit breaking
3-circuit breaking can be independently programmed for self-arming, i.e. automatic arming without the use of the remote control.

Self-arming, anti-theft alarm
The entire theft alarm can also be programmed for self-arming. In this case, 3-circuit breaking is automatically included when the alarm is armed.

See also the "Programming" section for more detailed information. Programming and Relearning