Discovery II
ENGINE MANAGEMENT SYSTEM - V8
18-2-66 DESCRIPTION AND OPERATION
Cruise control ECU
The cruise control ECU controls the cruise control system.
Most functions of the cruise control ECU are described under other components.
Input/Output
The diagnostic line for the cruise control system is between cruise control ECU and diagnostic socket.
The cruise control ECU does not generate fault codes however the following system information is available via
TestBook:
l
Last switch off reason, which was due to unacceptable speed input.
l
Speed signal detected.
l
Below minimum speed threshold.
l
Current vehicle speed.
l
Recorded SET road speed.
ECU operating parameters (connector connected)
Pin No.
Condition
Volts
Ohms
18
All conditions
Less than 0.5 to earth