Electrical Specific Information
Definition of Vehicle Component CodesAll components are identified by a letter followed by an arbitrary number assigned to the component. The letter assigned to the component indicates the type of component.
B Bulbs, Heated Screens, Mirror Demisters, Cigar Lighters, and Heated Washer Jets
K Relays, Solenoids, Speakers, and Resistors
M Motors
P Fuse Boxes and Fusible Links
X Switches and Sensors
Z Electronic Control Units, Modules, Shields, Diodes, and Capacitors
Wire Colors
All wires are identified by letters which indicates a certain color. Wire color and size will only be shown once if it does not change throughout the circuit. The following chart explains the wire color abbreviations.
Wire Color Chart
B - Black
G - Green
K - Pink
L - Light
N - Brown
O - Orange
P - Purple
R - Red
S - Grey
U - Blue
W - White
Y - Yellow
Previous And Next Arrows
Schematic pages which follow another schematic page of the same chapter will have an arrow in the upper left had corner. There is no arrow on the first schematic page of a chapter. Schematic pages which are followed by another schematic page will have an arrow in the lower right hand comer. If the page is the last page of the chapter, there will be a square instead of an arrow.
Page Qualifiers
Schematic pages which are specific to certain model, option or country variations will have a small "Qualifier" after the Previous Arrow in the upper left hand corner. For example, a section might contain pages specific to petrol engines and same pages specific to diesel engines.
"Petrol" will be shown in the upper left hand corner of petrol specific pages, and "Diesel" will be shown in the upper left hand corner of diesel specific pages.
Circuit Qualifiers
Certain abbreviations are used throughout the Electrical Troubleshooting Manual as circuit qualifiers The following list explains all abbreviations used as qualifiers in the Circuit Diagrams.
ABS Anti-Lock Braking System
CPU Central Processing Unit
LHD Left hand Drive
RHD Right hand Drive
LWB Long Wheel Base
SWB Short Wheel Base
NAS North American Spec.
MFI-V8 Multiport Fuel Injection (MFI-V8)
A/C Air Conditioning
SFI-V8 Sequential Multiport Fuel Injection (SFI-V8)
Switch Positions
Certain abbreviations are used throughout the Electrical Troubleshooting Manual as Switch Position notes. The following list explains all abbreviations used as Switch Position notes in the Circuit Diagrams.
< 100° Less Than 100°
> 100° More than 100°
Connector, Ground, And Splice Identification By Harness
Connectors, Grounds, and Splices are identified by a letter followed by a number. Connectors are identified by C, grounds by E, and splices by S. The numbers assigned to the connectors, grounds, and splices no longer correspond to its location in the vehicle. Connectors, grounds, and splices have been numbered according to which harness the connector, ground, or splice is located on. The following table illustrates the appropriate numbers for each harness.
100 - 199 Underbonnet Harness
200 - 299 Fascia Harness (LHD and RHD)
300 - 349 Right Body Harness
350 - 399 Left Body Harness
400 - 499 Airbag Harness
500 - 549 Petrol Engine Harness
550 - 569 Transmission Harness
570 - 599 Diesel Engine Harness
600 - 699 Console Harness
700 - 749 Rear Door Harness
750 - 799 Front Door Harness
800 - 849 Lower Tailgate Harness
850 - 899 Upper Tailgate Harness
900 - 949 Composite Seat Harness
950 - 999 Left and Right Seat Harness
Suffix
A For Different Option Variations
B For Different Option Variations
L Left Side of Vehicle only
R Right Side of Vehicle only
P Petrol Engine only
D Diesel Engine only