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FOREWORD This wiring diagram manual has been prepared to provide information on the electrical system of the 2004 LAND NOTICEWhen handling supplemental restraint system components (removal,installation or inspection, etc.), always follow the direction given in the repairmanuals listed above to prevent accidents and supplemental restraintsystem malfunction.FOREWORDThis wiring diagram manual has been prepared to provideinformation on the electrical system of the 2004 LANDCRUISER.Applicable models: UZJ100 SeriesFor service specifications and repair procedures of the abovemodels other than those listed in this manual, refer to thefollowing manuals;Manual NamePub. No.Y 2004 LAND CRUISER Repair ManualVolume 1Volume 2Y 2004 TOYOTA New Car FeaturesRM1071U1RM1071U2NCF257UAll information in this manual is based on the latest productinformation at the time of publication. However, specificationsand procedures are subject to change without notice.Y2003All rights reserved. This book may not bereproduced or copied, in whole or in part, withoutthe written permission of Toyota MotorCorporation.2004 LAND CRUISER (EWD548U)12004 LAND CRUISERELECTRICAL WIRING DIAGRAMSection Code PageINTRODUCTION A. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2HOW TO USE THIS MANUAL B. . . . . . . . . . . . . . . . . . 3TROUBLESHOOTING C. . . . . . . . . . . . . . . . . . . . . . . . . 12ABBREVIATIONS D. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17GLOSSARY OF TERMS AND SYMBOLS E. . . . . . . . 18RELAY LOCATIONS F. . . . . . . . . . . . . . . . . . . . . . . . . . . 20ELECTRICAL WIRING ROUTING G. . . . . . . . . . . . . . . 68SYSTEM CIRCUITS H. . . . . . . . . . . . . . . . . . . . . . . . . . . 93GROUND POINT I. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 376POWER SOURCE (Current Flow Chart) J. . . . . . . . . 384CONNECTOR LIST K. . . . . . . . . . . . . . . . . . . . . . . . . . . . 394PART NUMBER OF CONNECTORS L. . . . . . . . . . . . . 406OVERALL ELECTRICAL WIRING DIAGRAM M. . . . . 4102004 LAND CRUISER (EWD548U)2A INTRODUCTIONThis manual consists of the following 13 sections:No. Section DescriptionAINDEX Index of the contents of this manual.AINTRODUCTION Brief explanation of each section.BHOW TO USE THISMANUALInstructions on how to use this manual.CTROUBLE-SHOOTINGDescribes the basic inspection procedures for electrical circuits.D ABBREVIATIONS Defines the abbreviations used in this manual.EGLOSSARY OFTERMS ANDSYMBOLSDefines the symbols and functions of major parts.F RELAY LOCATIONSShows position of the Electronic Control Unit, Relays, Relay Block, etc.This section is closely related to the system circuit.GELECTRICALWIRING ROUTINGDescribes position of Parts Connectors, Splice points, Ground points, etc.This section is closely related to the system circuit.INDEX Index of the system circuits.HSYSTEM CIRCUITSElectrical circuits of each system are shown from the power supply through groundpoints. Wiring connections and their positions are shown and classified by codeaccording to the connection method. (Refer to the section, ”How to use this manual”).The ”System Outline” and ”Service Hints” useful for troubleshooting are also containedin this section.I GROUND POINT Shows ground positions of all parts described in this manual.JPOWER SOURCE(Current Flow Chart)Describes power distribution from the power supply to various electrical loads.K CONNECTOR LISTDescribes the form of the connectors for the parts appeared in this book.This section is closely related to the system circuit.LPART NUMBER OFCONNECTORSIndicates the part number of the connectors used in this manual.MOVERALLELECTRICALWIRING DIAGRAMProvides circuit diagrams showing the circuit connections.2004 LAND CRUISER (EWD548U)3HOW TO USE THIS MANUAL BThis manual provides information on the electrical circuits installed on vehicles bydividing them into a circuit for each system.The actual wiring of each system circuit is shown from the point where the powersource is received from the battery as far as each ground point. (All circuitdiagrams are shown with the switches in the OFF position.)When troubleshooting any problem, first understand the operation of the circuitwhere the problem was detected (see System Circuit section), the power sourcesupplying power to that circuit (see Power Source section), and the ground points(see Ground Point section). See the System Outline to understand the circuitoperation.When the circuit operation is understood, begin troubleshooting of the problemcircuit to isolate the cause. Use Relay Location and Electrical Wiring Routingsections to find each part, junction block and wiring harness connectors, wiringharness and wiring harness connectors, splice points, and ground points of eachsystem circuit. Internal wiring for each junction block is also provided for betterunderstanding 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 ElectricalWiring Diagram at the end of this manual. [A][B][H][D][F][E][ I ][L][M][J][K][G][C]12IBIB34472111134126312B18BLRLGRB18GR34Rear Combination Light RHR 7Rear Combination Light LHR 6High MountedStop LightH17Light Failure SensorStop Light SWABS ECUS 6CombinationMeterC 7BV11WB(Shielded)BV11I 5GWIB2IB1IE114BO508L 415ASTOP7.5AGAUGEFrom Power Source System (See Page 66)Stop LightGRWBWBWBWBGBYG RLRGRWRGWWBGWW/G)(S/D)LL((S/D)StopStopRear Lights2004 LAND CRUISER (EWD548U)4B HOW TO USE THIS MANUAL∗ The system shown here is an EXAMPLE ONLY. It is different to the actualcircuit shown in the SYSTEM CIRCUITS SECTION.2004 LAND CRUISER (EWD548U)5B[A] : System Title[B] : Indicates a Relay Block. No shading is used andonly the Relay Block No. is shown to distinguish itfrom the J/BExample: Indicates Relay Block No.1[C] : ( ) is used to indicate different wiring andconnector, etc. when the vehicle model, enginetype, or specification is different.[D] : Indicates related system.[E] : Indicates the wiring harness and wiring harnessconnector. The wiring harness with male terminal isshown with arrows ( ).Outside numerals are pin numbers.Female Male ( )The first letter of the code for each wiring harnessand wiring harness connector(s) indicates thecomponent’s location, e.g, ”E” for the EngineCompartment, ”I” for the Instrument Panel andSurrounding area, and ”B” for the Body andSurrounding area.When more than one code has the first and secondletters in common, followed by numbers (e.g, IH1,IH2), this indicates the same type of wiring harnessand wiring harness connector.[F] : Represents a part (all parts are shown in sky blue).The code is the same as the code used in partsposition.[G] : Junction Block (The number in the circle is the J/BNo. and the connector code is shown beside it).Junction Blocks are shaded to clearly separatethem from other parts.3C indicates thatit is insideJunction BlockNo.3Example:[H] : Indicates the wiring color.Wire colors are indicated by an alphabetical code.B = Black W = White BR = BrownL = Blue V = Violet SB = Sky BlueR = Red G = Green LG = Light GreenP = Pink Y = Yellow GR = GrayO = OrangeThe first letter indicates the basic wire color and thesecond letter indicates the color of the stripe.Example: L - YL(Blue)Y(Yellow)[I] : Indicates a wiring Splice Point (Codes are ”E” for theEngine Room, ”I” for the Instrument Panel, and ”B”for the Body).The Location of splice Point I 5 is indicated by theshaded section.[J] : Indicates a shielded cable.[K] : Indicates the pin number of the connector.The numbering system is different for female andmale connectors.Example:Numbered in orderfrom upper left tolower rightNumbered in orderfrom upper right tolower leftFemaleMale[L] : Indicates a ground point.The first letter of the code for each ground point(s)indicates the component’s location, e.g, ”E” for theEngine Compartment, ”I” for the Instrument Paneland Surrounding area, and ”B” for the Body andSurrounding area.[M] : Page No.[N][O][P][Q][R][S][T][U]2004 LAND CRUISER (EWD548U)6B HOW TO USE THIS MANUALCurrent is applied at all times through the STOP fuse to TERMINAL 2 of the stop light SW.When the ignition SW is turned on, current flows from the GAUGE fuse to TERMINAL 8 of the light failure sensor, and also flowsthrough the rear lights warning light to TERMINAL 4 of the light failure sensor.Stop Light Disconnection WarningWhen the ignition SW is turned on and the brake pedal is pressed (Stop light SW on), if the stop light circuit is open, the currentflowing from TERMINAL 7 of the light failure sensor to TERMINALS 1, 2 changes, so the light failure sensor detects thedisconnection 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 lightswarning light on. By pressing the brake pedal, the current flowing to TERMINAL 8 of the light failure sensor keeps the warningcircuit on and holds the warning light on until the ignition SW is turned off.S6 Stop Light SW2-1 : Closed with the brake pedal depressedL4 Light Failure Sensor1, 2, 7-Ground : Approx. 12 volts with the stop light SW on4, 8-Ground : Approx. 12 volts with the ignition SW at ON position11-Ground : Always continuity: Parts LocationCode See Page Code See Page Code See PageC7 34 L4 36 R7 37H17 36 R6 37 S6 35: Relay BlocksCode See Page Relay Blocks (Relay Block Location)118 R/B No.1 (Instrument Panel Brace LH): Junction Block and Wire Harness ConnectorCode See Page Junction Block and Wire Harness (Connector Location)IB20 Instrument Panel Wire and Instrument Panel J/B (Lower Finish Panel)3C22 Instrument Panel Wire and J/B No.3 (Instrument Panel Brace LH): Connector Joining Wire Harness and Wire HarnessCode See Page Joining Wire Harness and Wire Harness (Connector Location)IE142 Floor Wire and Instrument Panel Wire (Left Kick Panel)BV150 Luggage Room Wire and Floor Wire (Luggage Room Left): Ground PointsCode See Page Ground Points LocationBL50 Under the Left Center PillarBO50 Back Panel Center: Splice PointsCode See Page Wire Harness with Splice Points Code See Page Wire Harness with Splice PointsI544 Cowl WireB1850 Luggage Room WireSystem OutlineService Hints2004 LAND CRUISER (EWD548U)7B[N] : Explains the system outline.[O] : Indicates values or explains the function for reference during troubleshooting.[P] : Indicates the reference page showing the position on the vehicle of the parts in the system circuit.Example : Part ”L4” (Light Failure Sensor) is on page 36 of the manual.∗ The letter in the code is from the first letter of the part, and the number indicates its order in partsstarting with that letter.Example : L 4ÁÁParts is 4th in orderLight Failure Sensor[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 instrumentpanel.[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 thismanual, and is installed on the instrument panel left side.[S] : Indicates the reference page describing the wiring harness and wiring harness connector (the female wiringharness is shown first, followed by the male wiring harness).Example : Connector ”IE1” connects the floor wire (female) and Instrument panel wire (male). It is described onpage 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 ”BO” is described on page 50 of this manual and is installed on the back panel center.[U] : Indicates the reference page showing the position of the splice points on the vehicle.Example : Splice point ”I5” is on the Cowl Wire Harness and is described on page 44 of this manual.2004 LAND CRUISER (EWD548U)8B HOW TO USE THIS MANUALThe ground points circuit diagram shows the connections from all major parts to the respective ground points. Whentroubleshooting a faulty ground point, checking the system circuits which use a common ground may help you identifythe problem ground quickly. The relationship between ground points ( EA, IB and IC shown below) can also bechecked this way.555544444BA15IB18EA2ID115IC33IA12E 3W-BW-BW-BW-BW-BW-BW-BW-BW-B W-BW-BW-B W-BW-BW-B W-B W-BW-BW-BW-BW-BW-BW-BW-BW-B W-B W-BW-BBRW-BBR BRW-BW-BW-BW-BW-BW-BW-BW-B W-BW-BW-BW-BW-BW-BBRW-BBRBRBRW-B (4A-GZE)W-BW-BI 2I 2B 5I 5I 5I 5B 5B 5B 5I 5I 5I 3I 3E 3E 3E 3E 2E 4E 5E 4E 5E 6E 4E 4B 4EAI 4B 4B 4I 4 I 8IB IC443E53E63G133F33D13B7W-BW-BW-BW-BW-BW-BW-BW-BW-BW-BW-BW-BW-BW-BW-BI 6I 6I 23C710AAAAAAJunctionConnectorJ 1W-BW-BW-B W-BBRW-BW-BW-BW-BW-BW-BI GROUND POINTFAN MAIN RelayFAN MAIN RelayA/C Relay No.2A/C Relay No.3Radiator Fan MotorHeadlight Cleaner RelayHeadlight LHHeadlight RHFront Fog Light LHBrake Fluid Level SWFront Fog Light RHFront Turn Signal Light RHFront Clearance Light RHFront Turn Signal Light LHFront Clearance Light LHDoor Lock Control SWDoor Courtesy SW RHDoor Lock Motor RHDoor Lock Control RelayBlower ResistorIdle-Up SWA/C AmplifierRadio and PlayerHEATER RelayAuto Antenna MotorA/C Control AssemblyBlower MotorBlower SWParking Brake SWCombination MeterCombination SWCruise Control ECURemote Control Mirror SWTurn Signal FlasherDefogger SWUnlock Warning SWPower Window Master SWPower Window ControlRelayDoor Courtesy SW LHDoor Lock Control SWDoor Lock Motor LHFuel Control SWWoofer Speaker AmplifierCombination MeterCombination MeterFuel SenderCigarette LighterO/D Main SWClockCombination SW∗ The system shown here is an EXAMPLE ONLY. It is different to the actual circuit shown in the SYSTEM CIRCUITS SECTION.2004 LAND CRUISER (EWD548U)9BThe ”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 systemare explained. Since all System Circuit diagrams start from the power source, the power source system must be fullyunderstood.ACCS 2665222Battery30A AM2StarterShort Pin100A ALTFusible Link Block60A ABS10A ECU-B7.5A DOME15A EFI10A HAZARD20A RADIO NO.110A HORN20A10AFuse Page214230112122194187180166210ABSCigarette LighterCombination MeterKey Reminder and Seat Belt WarningLight Auto Turn OffTheft Deterrent and Door Lock ControlABS and Traction ControlCruise ControlElectronically Controlled TransmissionMultiplex Communication SystemSTOPSystemDOMEHeadlightInterior Light3 EA2 1 EA1E 6E 7E 722222222INJECTION RelaySTARTER RelayBBBB-O11223434W-BW-BB-WB-WE 7E 7BBW1.25B FL MAIN50A MAIN7.5A AM215A HAZ-RADIO22222WWEB1EB176W-RI 2 I 2I 2WWWWW111140A DOOR LOCK CB7.5A DOME1W-LR112431111111GGW-R15A TAIL20A DEFOGB-Y8432Ignition SWI 8B-Y11P-LBattery15A RAD CIG2TAILRelayPower SourceJ POWER SOURCE (Current Flow Chart)Engine Room R/B (See Page 20)2WWBBBBBW-RWWWG-WAM2AM1IG2IG1WWThe chart below shows the route by which current flows from the battery to each electrical source(Fusible Link, Circuit Breaker, Fuse, etc.) and other parts.∗ The system shown here is an EXAMPLE ONLY. It is different to the actual circuit shown in the SYSTEM CIRCUITS SECTION.[...]... Black 1 2 3 2 Black 1 2 3 1 2 2 404 2004 LAND CRUISER (EWD548U) 1 2 V7 12 1 V6 12 K V8 V9 V10 W1 Black Gray Blue Gray 1 1 2 1 2 1 2 W4 Y1 Black 3 2 1 2 3 4 1 2 3 4 5 6 7 8 Z1 1 2 405 2004 LAND CRUISER (EWD548U) G ELECTRICAL WIRING ROUTING : Location of Connector Joining Wire Harness and Wire Harness : Location of Ground Points : Location of Splice Points 76 2004 LAND CRUISER (EWD548U) G Connector Joining... and Alternator Wire (Near the Battery) EF1 Engine Room No.2 Wire and Engine Room Main Wire (Under the Engine Room J/B) 77 2004 LAND CRUISER (EWD548U) G ELECTRICAL WIRING ROUTING : Location of Connector Joining Wire Harness and Wire Harness : Location of Ground Points 78 2004 LAND CRUISER (EWD548U) G Connector Joining Wire Harness and Wire Harness Code Joining Wire Harness and Wire Harness (Connector... Wire (Left Side of Instrument Panel) IG1 IG4 Engine Room No.2 Wire and Dash Wire (Behind the Combination Meter) g ( ) IG5 79 2004 LAND CRUISER (EWD548U) G ELECTRICAL WIRING ROUTING : Location of Connector Joining Wire Harness and Wire Harness : Location of Splice Points 80 2004 LAND CRUISER (EWD548U) G Connector Joining Wire Harness and Wire Harness Code IH2 Joining Wire Harness and Wire Harness (Connector... IQ1 Instrument Panel Integration Wire and Lamp Wire (Behind the Glove Box) IT1 Engine Room No.2 Wire and Dash Wire (Right Kick Panel) 81 2004 LAND CRUISER (EWD548U) G ELECTRICAL WIRING ROUTING : Location of Connector Joining Wire Harness and Wire Harness 82 2004 LAND CRUISER (EWD548U) G Connector Joining Wire Harness and Wire Harness Code Joining Wire Harness and Wire Harness (Connector Location) IU1... Glove Box) Instrument Panel Integration Wire and Engine Wire (Behind the Glove Box) Front Door RH Wire and Dash Wire (Right Kick Panel) 83 2004 LAND CRUISER (EWD548U) G ELECTRICAL WIRING ROUTING : Location of Connector Joining Wire Harness and Wire Harness 84 2004 LAND CRUISER (EWD548U) G Connector Joining Wire Harness and Wire Harness Code Ia1 Joining Wire Harness and Wire Harness (Connector Location)... Dash Wire and Floor No.2 Wire (Right Side of Front Console) Ih1 Dash Wire and Dash Wire (Center Side of Front Console) 85 2004 LAND CRUISER (EWD548U) G ELECTRICAL WIRING ROUTING : Location of Connector Joining Wire Harness and Wire Harness : Location of Ground Points 86 2004 LAND CRUISER (EWD548U) ... 4 1 2 3 4 D22 Gray 1 2 3 4 Black 1 2 3 4 D26 1 2 3 4 5 6 7 8 9 10 11 1213141516171819 20 1 2 3 4 D27 1 2 3 4 5 E1 E2 E3 Gray Black Black 1 2 1 2 E4 1 2 3 4 5 6 1 2 3 4 5 6 7 8 9 101112131415 397 2004 LAND CRUISER (EWD548U) K CONNECTOR LIST E5 1 2 3 E6 4 5 6 7 1 2 3 E7 4 5 6 7 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 8 9 10 11 12 13 14 15 16 17 18 19 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24... Gray Dark Gray Black Black Black 1 1 1 1 2 2 4 F18 3 1 5 F19 2 1 G1 Black 2 G2 G3 Black 1 1 1 3 1 1 2 2 4 G4 H1 H2 H3 H4 Gray Black Brown Black Brown 1 2 3 4 5 6 7 1 2 1 2 8 9 10 11 12 13 14 398 2004 LAND CRUISER (EWD548U) 1 2 1 2 K H5 H6 H7 H8 H9 H10 Dark Gray Dark Gray Dark Gray Dark Gray Black Black 1 1 2 3 1 2 3 4 4 H11 1 2 3 1 2 3 4 1 4 I1 I3 I4 Black Black Black 1 2 3 4 21 I2 Black 1 2 3 4 1... B A A A A A A A B BB B A BCDE F G CCCCDDDDE E E CCCCDDDDE E E A A A A J8 J9 J10 A A A B B CCCDDDB J11 A A A A A A A A A A A A A A B B CCCDDE E A A B B CCCDDE E F F F F GGGHHHH F F F F GGGHHHH 399 2004 LAND CRUISER (EWD548U) K CONNECTOR LIST J12 J13 Gray Blue A A A A A A A B BB B A B CDE F G A A A A A A A B BB B CCCCDDDDE E E A BCDE F G CCCCDDDDE E E J15 J14 J16 J17 J18 Gray A A A B B B C C C C C A BCDE... H H H H F F F F G G G H H H H K2 K3 L1 L2 L3 M1 Black Black 1 1 2 1 2 123 4 1 2 3 4 5 1 2 M2 M3 M4 M5 Gray 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 1 2 3 1 2 3 10 11 12 4 5 6 7 8 9 13 14 15 16 17 18 19 400 2004 LAND CRUISER (EWD548U) 20 21 22 23 24 25 26 K M6 M7 M9 N1 Gray 1 2 3 1 2 1 2 3 4 5 6 7 8 4 5 6 1 2 3 4 5 6 7 8 9 10 11 12 13 14 9 10 11 12 13 14 15 16 15 16 17 18 19 20 21 22 23 24 25 26 27 28 N2 N3 N4 . withoutthe written permission of Toyota MotorCorporation .2004 LAND CRUISER (EWD548U) 12004 LAND CRUISERELECTRICAL WIRING DIAGRAMSection Code PageINTRODUCTION. refer to thefollowing manuals;Manual NamePub. No.Y 2004 LAND CRUISER Repair ManualVolume 1Volume 2Y 2004 TOYOTA New Car FeaturesRM1071U1RM1071U2NCF257UAll
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