B [A] : System Title [I] : Indicates the wiring color. [B] : Indicates a Relay Block. No shading is used and only the Relay Block No. is shown to distinguish it from the J/B Wire colors are indicated by an alphabetical code. B = Black W = White BR = Brown Example: Indicates Relay Block No.1 L = Blue V = Violet SB = Sky Blue R = Red G = Green LG = Light Green [C] : ( ) is used to indicate different wiring and connector, etc. when the vehicle model, engine type, or specification is different. P = Pink Y = Yellow GR = Gray O = Orange [D] : Indicates related system. The first letter indicates the basic wire color and the second letter indicates the color of the stripe. [E] :
Indicates the wiring harness and wiring harness connector. The wiring harness with male terminal is shown with arrows ( ). Outside numerals are pin numbers. Example: L – Y L (Blue) Y (Yellow) [J] : Indicates a wiring Splice Point (Codes are ”E” for the Engine Room, ”I” for the Instrument Panel, and ”B” for the Body). Female Male ( ) The first letter of the code for each wiring harness and wiring harness connector(s) indicates the component’s location, e.g, ”E” for the Engine Compartment, ”I” for the Instrument Panel and Surrounding area, and ”B” for the Body and Surrounding area.
When more than one code has the first and second letters in common, followed by numbers (e.g, IH1, IH2), this indicates the same type of wiring harness and wiring harness connector. The Location of splice Point I 5 is indicated by the shaded section. [F] : Represents a part (all parts are shown in sky blue). The code is the same as the code used in parts position. [K] : Indicates a shielded cable. [G] : Junction Block (The number in the circle is the J/B No. and the connector code is shown beside it). Junction Blocks are shaded to clearly separate them from other parts. [L] : Indicates the pin number of the connector. The numbering system is different for female and male connectors. Example:
3C indicates that it is inside Junction Block No.3 Example: Numbered in order from upper left to lower right Numbered in order from upper right to lower left Female Male [M] : Indicates a ground point. [H] : When 2 parts both use one connector in common, the parts connector name used in the wire routing section is shown in square brackets [ ]. The first letter of the code for each ground point(s) indicates the component’s location, e.g, ”E” for the Engine Compartment, ”I” for the Instrument Panel and Surrounding area, and ”B” for the Body and Surrounding area. [N] : Page No. 2001 LEXUS LX 470 (EWD427U) 5