Discovery II
ENGINE MANAGEMENT SYSTEM - V8
18-2-70 DESCRIPTION AND OPERATION
Body control unit
On manual gearbox vehicles, the BCU provides cruise control lockout or suspend function as described under brake
pedal switch.
On vehicles with automatic gearbox, the BCU monitors the status of the brake pedal switch as well as the status of
the automatic gearbox gear selector lever. The BCU monitors the gear selector lever to determine which gearbox
position the driver has selected. If the BCU detects that the driver has selected park, reverse or neutral, it sends a
signal to the cruise control ECU which inhibits cruise operation or deactivates cruise control if it is activated.
Input/Output
If the BCU receives a brake pedal switch signal or an automatic gearbox gear selector lever position signal, the BCU
sends a HIGH signal to the cruise control ECU. The cruise control ECU cancels or inhibits cruise control functions.