Rover 14cux wiring diagram. So if you measure dc voltage across the oxygen sensors while the vehicle is running by connecting a voltmeter between terminal 4 and terminals 23 and 24 respectively you should expect to see voltage readings that vary between 050v and 100v. The lucas 14cux sometimes referred to as the rover 14cux is an automotive electronic fuel injection system developed by lucas industries and fitted to the rover v8 engine in land rover vehicles between 1990 and 1995. 1314cu and 14cux systems 1314cu and 14cux systems 83 system inputs mass air flow sensor maf the mass air flow maf sensor is a hot wire type. The original rover fault code reader was located under the passenger seat for the range rover export versions.
14cux to suit morgan. Nz david land rovers and camping in new zealand 14819 views. All 14cux vehicles are fitted with a tune resistor except certain north american specification nas vehicles. The rover 14cux ecu provides the sensors a low current 5 volt supply and measures the resulting voltage drop across the sensors.
The diagram from the range rover manual shows both the location of the original fault code reader and the location of the c380 socket. All engine wiring harnesses are custom made to suit the vehicle. The system is also sometimes referred to as the. Land rover discovery v8 39 efi ecumate part one duration.
Tvr marcos sd1 landrover etc. Socket fitted to the loom in the normal place whilst others have this resistor taped inside the wiring loom to prevent anyone interfering with it. In some cases nas vehicles may have provision for a tune resistor to be fitted ie. So other diagrams of the ecu wiring normally based on land rover applications indicate there should be a resistor in the line between the coil negative and the ecu pin 39 but i cant see it.
Introducing the 14cux unlike earlier generations of the rover v8 engine the rv8 came with electronic fuel injection based on the lucas hot wire system used widely by rover for their 39litre v8 engine. Harnesses made to use dta and motec ecus and also chevy ls engines. The system was also paired with the rover v8 by a number of low volume manufacturers such as tvr marcos ginetta and morgan. The function of the system is to supply the exact amount of fuel directly into the inlet manifold according to the prevailing engine operating conditions.
Next to the 14cux ecu itself. It contains two wires one heated to a known value of 1000 c 2120 f above the other.