LR3 (LA) V8-4.4L (2009)
The direction of the arrow in a Diode symbol (C) indicates the direction of current flow. The Zener diode (D) - prevents current flow until a precise
voltage is reached.
Understanding the Circuit Diagrams
Understanding The Circuit Diagrams
Components
After each component description, a translation code is displayed in brackets, for example: Starter relay (R102), Engine control-module (ECM)(D131).
The codes can be ignored.
Note: A dotted outline indicates that the component identified is not shown in its entirety.
Connectors
Connectors and header joints are identified by their corresponding connector number with a numbered suffix to indicate the pin-out detail of the wire, i.e.
C0292-1 identifies connector 292, pin number 1. Wire insulation colors are listed in a table at the end of this section. Where wires have a predominant
color with a secondary color tracer, the main color is identified first, i.e. WH-BK - white with a black tracer.
Wire length (Power and Ground Distribution only)
The wire length (in millimeters) is displayed after the color and cross sectional area; for example, SR,0.35,480. In this example, the figure, 480 indicates
the approximate position of the harness splice is 480mm from connector C2335.
Line Types