2011 Toyota Avalon Service & Repair Manual

NOTICE Always follow the directions given in the above repair manuals when handling supplemental restraint system components (such as removal, installation, inspection, etc.) in order to prevent accidents and supplemental restraint system malfunction. E2005 All rights reserved. This book may not be reproduced or copied, in whole or in part, without the written permission of Toyota Motor Corporation. First Printing : Jul. 25, 2005 01–050725–00 FOREWORD This wiring diagram manual has been prepared to provide information on the electrical system of the 2006 AVALON. Applicable models: GSX30 Series Refer to the following manuals for additional service specifications and repair procedures for these models: Manual Name Pub. No. D 2006 AVALON Repair Manual D 2006 TOYOTA New Car Features RM00A0U NM0010U All information in this manual is based on the latest product information at the time of publication. However, specifications and procedures are subject to change without notice.

AVALON (EM00A0U) 1 2006 AVALON ELECTRICAL WIRING DIAGRAM Section Code Page INTRODUCTION A . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 HOW TO USE THIS MANUAL B . . . . . . . . . . . . . . . . . . . 3 TROUBLESHOOTING C . . . . . . . . . . . . . . . . . . . . . . . . . . 12 ABBREVIATIONS D . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17 GLOSSARY OF TERMS AND SYMBOLS E . . . . . . . . . 18 RELAY LOCATIONS F . . . . . . . . . . . . . . . . . . . . . . . . . . . 20 ELECTRICAL WIRING ROUTING G . . . . . . . . . . . . . . . 48 SYSTEM CIRCUITS H . . . . . . . . . . . . . . . . . . . . . . . . . . . . 64 GROUND POINT I . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 410 POWER SOURCE (Current Flow Chart) J . . . . . . . . . 420 CONNECTOR LIST K . . . . . . . . . . . . . . . . . . . . . . . . . . . . 430 PART NUMBER OF CONNECTORS L . . . . . . . . . . . . . 452 OVERALL ELECTRICAL WIRING DIAGRAM M . . . . . 456

2 AVALON (EM00A0U) A INTRODUCTION This manual consists of the following 13 sections: No. Section Description A INDEX Index of the contents of this manual. A INTRODUCTION Brief explanation of each 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. H 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.

AVALON (EM00A0U) 3 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 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.

[B] W – R G – W Skid Control ECU with Actuator G – W H7 Y – G Combination Meter R – L Rear Lights R – L (S/D) (S/D) (S/D) (W/G) G – B W – B W – B Rear Combination Lamp (LH) H9 W – B W – B Rear Combination Lamp (RH) J7 W – B G – R Stop Stop G – R G – R 7 L L R L Stop Light 2 (BAT) 15A STOP (IG) IB IB 7.5A GAUGE 3 4 1 [A] H6 Stop Lamp SW G – W 1 2 [D] [C] [E] [F] [G] [M] H4 Light Failure Sensor 3C 3C 15 CH1 CH1 14 7 15 4 8 13 4 50 [J] [H] [N] [K] [L] [I] 11 H17 Center Stop Lamp (Shielded) H1 H2 HJ1 W – B G – R HJ1 1 2 6 3 3 4 1 1 1 2 4 AVALON (EM00A0U) B HOW TO USE THIS MANUAL * The system shown here is an EXAMPLE ONLY. It is different to the actual circuit shown in the SYSTEM CIRCUITS SECTION.

AVALON (EM00A0U) 5 B [A] : System Title [B] : Indicates a Relay Block. No shading is used and only the Relay Block No. is shown to distinguish it from the J/B Example: Indicates Relay Block No.1 [C] :( ) is used to indicate different wiring and connector, etc. when the vehicle model, engine type, or specification is different. [D] : Indicates related system. [E] :Indicates the code for the (male and female) connectors which are used to join two wire harnesses. The connector code consists of two alphabetical and one numerical characters. Female Male ( ) The first character of the connector code indicates the alphabetical code allocated to the wire harness which has the female connector, and the second shows that of the wire harness which has the male connector. The third character indicates a serial number used to distinguish between the wire harness combinations in cases when more than one of the same combination of wire harnesses exist (e.g. CH1 and CH2). Symbol ( ) indicates the male terminal connector. Numbers outside connector codes indicate the pin numbers of both male and female connectors. [F] : Represents a part (all parts are shown in sky blue). The code is the same as the code used in parts position. [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. 3C indicates that it is inside Junction Block No.3 Example: [H] : Indicates the wiring color. Wire colors are indicated by an alphabetical code. B = Black W = White BR = Brown L = Blue V = Violet SB = Sky Blue R = Red G = Green LG = Light Green P = Pink Y = Yellow GR = Gray O = Orange The first letter indicates the basic wire color and the second letter indicates the color of the stripe. Example: L – Y L (Blue) Y (Yellow) [I] : Indicates a shielded cable. [J] : Indicates the pin number of the connector. The numbering system is different for female and male connectors. Example: Numbered in other from upper left to lower right Numbered in other from upper right to lower left Female Male [K] : Indicates the ground point. The code consists of the two characters: A letter and number. The first character of the code indicates the alphabetical code allocated to the wire harness. The second character indicates a serial number used to distinguish between the ground points in cases when more than one ground point exist on the same wire harness. [L] : Page No. [M] : Indicates the ignition key position(s) when the power is supplied to the fuse(s). [N] : Indicates a wiring Splice Point. Example:

[O] [P] [Q] [R] [S] [T] 6 AVALON (EM00A0U) B HOW TO USE THIS MANUAL Current is applied at all times through the STOP fuse to TERMINAL 2 of the stop lamp SW. When the ignition SW is turned on, current flows from the GAUGE fuse to TERMINAL 8 of the light failure sensor, and also flows through the rear lights warning light to TERMINAL 4 of the light failure sensor. Stop Light Disconnection Warning When the ignition SW is turned on and the brake pedal is pressed (Stop lamp SW on), if the stop light circuit is open, the current flowing from TERMINAL 7 of the light failure sensor to TERMINALS 1, 2 changes, so the light failure sensor detects the disconnection and the warning circuit of the light failure sensor is activated. As a result, the current flows from TERMINAL 4 of the light failure sensor to TERMINAL 11 to GROUND and turns the rear lights warning light on. By pressing the brake pedal, the current flowing to TERMINAL 8 of the light failure sensor keeps the warning circuit on and holds the warning light on until the ignition SW is turned off. : Parts Location Code See Page Code See Page Code See Page H4 36 H7 36 H17 38 H6 36 H9 38 J7 38 : Relay Blocks Code See Page Relay Blocks (Relay Block Location) 1 18 R/B No.1 (Instrument Panel Brace LH) : Junction Block and Wire Harness Connector Code See Page Junction Block and Wire Harness (Connector Location) 3C 22 Instrument Panel Wire and J/B No.3 (Instrument Panel Brace LH) IB 20 Instrument Panel Wire and Instrument Panel J/B (Lower Finish Panel) : Connector Joining Wire Harness and Wire Harness Code See Page Joining Wire Harness and Wire Harness (Connector Location) CH1 42 Engine Room Main Wire and Instrument Panel Wire (Left Kick Panel) HJ1 50 Instrument Panel Wire and Floor Wire (Right Kick Panel) : Ground Points Code See Page Ground Points Location H1 50 Under the Left Center Pillar H2 50 Back Panel Center System Outline

AVALON (EM00A0U) 7 B [O] : Explains the system outline. [P] : Indicates reference pages showing the parts locations in the system circuit on the vehicle. Example : Code ”H4” (Light Failure Sensor) is on page 36 of the manual. * The first character of the code indicates the alphabetical code allocated to the wire harness, and the second character indicates the serial number of the parts connected to the wire harness. Serial number for the connected parts Code for the wire harness Example : H 4 [Q] : Indicates the reference page showing the position on the vehicle of Relay Block Connectors in the system circuit. Example : Connector ”1” is described on page 18 of this manual and is installed on the left side of the instrument panel. [R] : Indicates the reference page showing the position on the vehicle of J/B and Wire Harness in the system circuit. Example : Connector ”3C” connects the Instrument Panel Wire and J/B No.3. It is described on page 22 of this manual, and is installed on the instrument panel left side. [S] : Indicates the reference page describing the wiring harness and wiring harness connector (the female wiring harness is shown first, followed by the male wiring harness). Example : Connector ”CH1” connects the Engine Room Main Wire (female) and Instrument Panel Wire (male). It is described on page 42 of this manual, and is installed on the left side kick panel. [T] : Indicates the reference page showing the position of the ground points on the vehicle. Example : Ground point ”H2” is described on page 50 of this manual and is installed on the back panel center.

8 AVALON (EM00A0U) B HOW TO USE THIS MANUAL The ground points circuit diagram shows the connections from all major parts to the respective ground points. When troubleshooting a faulty ground point, checking the system circuits which use a common ground may help you identify the problem ground quickly. The relationship between ground points ( A1 , A2 and D4 shown below) can also be checked this way. I GROUND POINT B36 W – B W – B W – B Junction Connector (Shielded) (Shielded) BR W – B W – B A25 W – B W – B W – B W – B Junction Connector 17 18 19 20 3 8 7 4 1 6 5 3 4 2 DLC3 A20 L5 A22 A8 A5 A23 A11 I9 A21 K5 A1 A10 C4 C2 (E) (E) (E) (L) (E1) (E1) (E01) (E02) (LH E) (E) (E) (RH E) (–S) (E) (E) (E) (E) (E) (SG) D2 D63 D60 A6 Throttle Position SW D4 (5L–E) Junction Connector (Shielded) BR BR BR LA1 3 DB1 12 7 CA1 5 HA1 KA1 3 IH2 HB4 9 12 D43 11 10 BR BR BR BR BR W – B W – B W – B W – B W – B W – B W – B W – B W – B W – B W – B W – B W – B W – B W – B W – B W – B W – B W – B W – B W – B W – B A1 Power Window Master SW Turn Signal Lamp (Front RH) Brake Fluid Level Warning SW Fog Lamp (Front RH) Fog Lamp (Front LH) Engine ECU Injection Pump Assembly Clearance Lamp (Front LH) Clearance Lamp (Front RH) Headlamp Leveling SW Windshield Wiper Motor Turn Signal Lamp (Front LH) Pressure SW Headlamp Leveling Motor (RH) Cooling Fan Motor No.3 Power Window Master SW Headlamp Leveling Motor (LH) H23 (E) (E) A24 (GND2) (GND1) (GND) (GND) B19 (Shielded) (Shielded) (Shielded) (Shielded) W – B W – B W – B W – B W – B W – B W – B W – B 21 AB1 12 AB1 W – B W – B W – B W – B Skid Control ECU with Actuator Option Connector (Vacuum) 6 AB1 A2 16 * The system shown here is an EXAMPLE ONLY. It is different to the actual circuit shown in the SYSTEM CIRCUITS SECTION.

AVALON (EM00A0U) 9 B The ”Current Flow Chart” section, describes which parts each power source (fuses, fusible links, and circuit breakers) transmits current to. In the Power Source circuit diagram, the conditions when battery power is supplied to each system are explained. Since all System Circuit diagrams start from the power source, the power source system must be fully understood. AM2 AM1 IG2 ACC IG1 ST1 ST2 W – R W J POWER SOURCE (Current Flow Chart) The chart below shows the route by which current flows from the battery to each electrical source (Fusible Link, Circuit Breaker, Fues, etc.) and other parts 30A AM2 Starter Battery Fusible Link Block 100A ALT 2 6 6 Short Pin 10A ECU–B 7.5A DOME 2 15A EFI 10A HAZARD 20A RADIO NO.1 10A HORN 60A ABS 2 2 S 2 5 Engine Room R/B (See Page 20) 194 187 180 166 210 214 230 112 122 Page ABS ABS and Traction Control Cruise Control Electronically Controlled Transmission Multiplex Communication System Fuse STOP 20A 10A DOME Cigarette Lighter Combination Meter Headlight Interior Light Key Reminder and Seat Belt Warning Light Auto Turn Off System System Theft Deterrent and Door Lock Control 1.25B FL MAIN Power Source 50A MAIN 4 1 1 2 1 W – R 20A DEFOG B – Y 8 2 H8 W – R Ignition SW 1 1 7.5A DOME 2 1 R W AH1 7 AH1 BA1 1 6 W W W Battery B B B 2 2 1 2 2 2 2 7.5A AM1 15A HAZ–RADIO 1 2 1 2 W ∗ The system shown here is an EXAMPLE ONLY. It is different to the actual circuit shown in the SYSTEM CIRCUITS SECTION.

2011 Toyota Avalon Service & Repair Manual

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