Руководство по эксплуатации Lexus LX 470 — электрическая система (EN)

A - Introduction

A INTRODUCTION This manual consists of the following 13 sections: 1 No. Section Description A INTRODUCTION This page, with a brief explanation of each section. The blue underlined letters in the first column serve as hyperlinks to the associated section. B HOW TO USE THIS MANUAL Instructions on how to use this manual. C TROUBLE– SHOOTING Describes the basic inspection procedures for electrical circuits. D ABBREVIATIONS Defines the abbreviations used in this manual. E GLOSSARY OF TERMS AND SYMBOLS Defines the symbols and functions of major parts. F RELAY LOCATIONS Shows position of the Electronic Control Unit, Relays, Relay Block, etc. This section is closely related to the system circuit.

G ELECTRICAL WIRING ROUTING Describes position of Parts Connectors, Splice points, Ground points, etc. This section is closely related to the system circuit. H INDEX Index of the system circuits. SYSTEM CIRCUITS Electrical circuits of each system are shown from the power supply through ground points. Wiring connections and their positions are shown and classified by code according to the connection method. (Refer to the section, ”How to use this manual”). The ”System Outline” and ”Service Hints” useful for troubleshooting are also contained in this section. I GROUND POINT Shows ground positions of all parts described in this manual.

J POWER SOURCE (Current Flow Chart) Describes power distribution from the power supply to various electrical loads. K CONNECTOR LIST Describes the form of the connectors for the parts appeared in this book. This section is closely related to the system circuit. L PART NUMBER OF CONNECTORS Indicates the part number of the connectors used in this manual. M OVERALL ELECTRICAL WIRING DIAGRAM Provides circuit diagrams showing the circuit connections.

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B - How to use this manual

HOW TO USE THIS MANUAL B This manual provides information on the electrical circuits installed on vehicles by dividing them into a circuit for each system. The actual wiring of each system circuit is shown from the point where the power source is received from the battery as far as each ground point. (All circuit diagrams are shown with the switches in the OFF position.) When troubleshooting any problem, first understand the operation of the circuit where the problem was detected (see System Circuit section), the power source supplying power to that circuit (see Power Source section), and the ground points (see Ground Point section).

See the System Outline to understand the circuit operation. When the circuit operation is understood, begin troubleshooting of the problem circuit to isolate the cause. Use Relay Location and Electrical Wiring Routing sections to find each part, junction block and wiring harness connectors, wiring harness and wiring harness connectors, splice points, and ground points of each system circuit. Internal wiring for each junction block is also provided for better understanding of connection within a junction block. Wiring related to each system is indicated in each system circuit by arrows (from__, to__).

When overall connections are required, see the Overall Electrical Wiring Diagram at the end of this manual. 2

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B - How to use this manual

B HOW TO USE THIS MANUAL [A] ∗ The system shown here is an EXAMPLE ONLY. It is different to the actual circuit shown in the SYSTEM CIRCUITS SECTION. STOP LIGHT FROM POWER SOURCE SYSTEM (SEE PAGE 66) 15A STOP 7. 5A GAUGE 2 IB 4 R–L [B] 1 3 IB @@@@ ЂЂЂЂ АААА [C] @@@@ @@@@ ЂЂЂЂ ЂЂЂЂ АААА АААА 7 3C (W/G) (S/D) (S/D) @@@@ @@@@ ЂЂЂЂ ЂЂЂЂ АААА АААА [G] W–R R L L @@@@ @@@@ ЂЂЂЂ ЂЂЂЂ АААА АААА 15 R–L 3C 4 2 S 6 C 7 REAR LIGHTS WARNING LIGHT [COMB. METER] [D] IE1 14 STOP LIGHT SW [E] 13 G–W G–R 1 [H] TO ABS ECU G–W I 5 [F] Y–G G–W 4 8 7 L 4 LIGHT FAILURE SENSOR 2 1 11 [I] BV1 1 G–R B18 [J] [K] G G–R G–R (SHIELDED) STOP LIGHT RH [REAR COMB. LIGHT RH] STOP LIGHT RH [REAR COMB.

LIGHT LH] 4 4 [L] 2 HIGH MOUNTED STOP LIGHT H17 W–B 1 3 R 7 3 R 6 W–B W–B BV1 1 W–B B18 W–B W–B BO 50 [M] BL [N] 3 DELAY CIRCUIT

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B - How to use this manual

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 L = Blue V = Violet SB = Sky Blue Example: Indicates Relay Block No.1 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. 4

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