Vanden Plas (X308) V8-4.0L (AJ27) (2000)
Engine Control Module: Diagram Information and Instructions
Abbreviations and Acronyms
The following abbreviations are used throughout the electrical diagrams:
B+
Battery Voltage
CAN
Controller Area Network
DI
Direction Indicator
LH
Left-Hand
LHD
Left-Hand Drive
LWB
Long Wheel Base
N/A
Normally Aspirated
NAS
North American Specification
RH
Right-Hand
RHD
Right-Hand Drive
ROW
Rest of World
SC
Supercharged
SCP
Standard Corporate Protocol Network
SWB
Short Wheel Base
VIN
Vehicle Identification Number
Vehicle Identification Numbers
Vehicle Identification Numbers (VIN)
VIN ranges are presented throughout the diagrams in the following manner:
->VIN 123456 indicates "up to VIN 123456"
VIN 123456 ->indicates "from VIN 123456 on".
Electrical System Architecture
The XJ Series Sedan system "architecture" incorporates two data networks: a controller area network (CAN) for the engine, drive train and related
systems, and a standard corporate protocol network (SCP) for the body systems. Any vehicle subsystem depicted on the figures with the CAN or SCP
included uses data derived from the network or transmits data via the network to achieve control. Messages for both networks are cataloged at "CAN and
SCP Network Messages". See: Diagrams/Diagram Information and Instructions/CAN and SCP Network Messages
When appropriate, the user will be referred to these messages by a note in the diagram or in the diagram legend. In addition to the two networks, the XJ
seris uses a serial data bus (ISO) for diagnostics and for the programming of certain control modules.
The XJ Series uses both power and logic grounds; however, it does not use a common logic ground stud connection as in previous Sedan vehicles.
Electrical Diagram Layout
Figure