Operating principles of a passive anti-theft system (Freelander 2)

The remote control test is performed via the launch control module and the CJB. If the remote control passes the test, the CJB initiates the unlocking of the electric steering column lock (if activated). Once the electric steering column lock is unlocked and the power is disconnected, the CJB activates the fuel pump module (FPDM) on gasoline vehicles or the fuel pump relay on diesel engines.

In addition, the CJB manages engine start requests. If the driver presses the brake pedal with the gear selector in the Park ('P') position (on vehicles with an automatic transmission), or presses the clutch pedal and the start/stop button simultaneously (on vehicles with a manual transmission), the CJB interprets this as an engine start request. Before allowing the engine start request, the CJB checks for the presence of a brake or clutch signal. If the signal is correct, the CJB transmits an engine start request signal to the ECM via the high-speed CAN bus.

If an additional remote control is required, the remote controls must be synchronised using a Land Rover approved diagnostic system. If any of the modules involved in the remote control authorisation procedure require replacement, the module must be synchronised using a Land Rover approved diagnostic system.