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DATE OF ISSUE: SEPTEMBER 1997
XK8 Range 1998 Introduction
Electrical Guide Format
This Electrical Guide is made up of two major sections. The first section, at the front of the book, provides general informa-
tion for and about the use of the book, and information and illustrations to aid in the understanding of the XK8 electrical /
electronic systems, as well as the location and identification of components.
The second section includes the Figures, which are the basis of the book. Each Figure is identified by a Figure Number (i.e.
Fig. 01.1) and Title, and is accompanied by a page of data containing information specific to that Figure.
It is recommended that the user read through the front section of the book to develop a familiarity with the layout of the
book and with the system of symbols and abbreviations used. The Table of Contents on the following pages should help
to guide the user.
Standard Abbreviations
The following abbreviations are used throughout this Electrical Guide:
B+ Battery Voltage
CAN Controller Area Network
COUPE Coupe Vehicles
CONV. Convertible Vehicles
DI Direction Indicator
LH Left-Hand
LHD Left-Hand Drive
NAS North American Specification
RH Right-Hand
RHD Right-Hand Drive
ROW Rest of World
SCP Standard Corporate Protocol Network
VIN Vehicle Identification Number
Refer to the vehicle Service Manual for a glossary of standard terms and their abbreviations.
Vehicle Identification Numbers (VIN)
VIN ranges are presented throughout the book in the following manner:
➞
VIN 123456 indicates “up to VIN 123456”; VIN 123456
➞
indicates “from VIN 123456 on”.
XK8 Electrical System Architecture
The XK8 system “architecture” is new to Jaguar vehicles and features vehicle multiplexing. Multiplexing allows for greatly
simplified wiring harnesses, while at the same time allowing flexibility in programming market variants. Two data net-
works are used in the system: a controller area network (CAN) for the engine, drive train and related systems, and a stan-
dard 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 in the Appendix of this book. When appropriate, the user will be referred to the Appendix
by a note on the Data page. In addition to the two networks, the XK8 uses a serial data bus (ISO) for diagnostics and for
the programming of certain control modules.
The XK8 uses both power and logic grounds; however, it does not use a common logic ground stud connection as in
previous vehicles.