ALARM SYSTEM AND HORN (Description): DESCRIPTION AND OPERATION (page 8 of 12)

ALARM SYSTEM AND HORN

86-4-12 DESCRIPTION AND OPERATION

Handset and receiver
The handset is incorporated in the key. It uses coded radio frequency signals to lock, unlock and super lock the vehicle 
remotely with a range of up to 10 metres (33 ft). The handset also mobilises the vehicle by transmitting a 
remobilisation signal when the handset is within range of the passive remobilisation exciter coil.

The receiver is located in front of the rear sunroof beneath the headlining.  Signals transmitted by the handset are 
distributed to the BCU via the receiver.

Input/Output
The BCU supplies the receiver with a 12 volts power supply. On receiving a valid signal from the handset, the receiver 
transmits a 1000 baud signal to the BCU to allow locking/unlocking of the vehicle.

TestBook provides the ability to monitor the real time state of the remote receiver.