USING TOYOTA WIRING DIAGRAMS USING THE ELECTRICAL WIRING DIAGRAM One of the keys to a quick and successful electrical diagnosis is correctly using the Toyota Electrical Wiring Diagram or EWD The EWD is not Just a book of wiring diagrams, but an information resource for anything electrical on the vehicle Everything from connector ID and location to what circuits share splice points is included in this manual Because where it sections and how there is so much information, it takes a little practice to learn is located, and what each of the EWD symbols and individual can tell you We will take a detailed look at all of these features, to use them in diagnosing an electrical problem As you follow your instructor’s “tour” of the EWD Sections, it is reeommended that you use the actual EWD, instead of this technician handbook This way, you will be getting a “feel” for the actual tool that you have at your dealership For a review of the EWD and its sections, view the Toyota Technical Training Video Using the Electrical Wiring Diagram (p/n 0040142925) Sections of the EWD The EWD is an invaluable too! | K _ when diagnosing an electrical problem Knowing where specific information is, and the “system” that the book | I uses helps to speed up the cH diagnostic process | G _ Fig 2-1 | F | E P | C | B OVERALL WIRING DIAGRAM GROUND POINTS SYSTEM CIRCUITS POWER SOURCE (CURRENT FLOW) ELECTRICAL WIRING ROUTING RELAY LOCATIONS GLOSSARY OF TERMS/SYMBOLS ABBREVIATIONS TROUBLESHOOTING HOWTO USE THIS MANUAL Section Code Page Ệ INTRODUCTION A ea HOW TO USE THIS MANUAL B RN TROUBLESHOOTING c Hit ABBREVIATIONS_ dD GLOSSARY OF TERMS AND SYMBOLS E i RELAY LOCATIONS r EEN ELECTRICAL WIRING ROUTING G POWER SOURCE (Current Flow Chart) H SYSTEM CIRCUITS_ ABS {ANTI-LOCK BRAKE SYSTEM} AIR CONDITIONING (PUSH CONTROL SWTYVPO AIR CONDITIONING (LEVER CONTROL SW TYPE) AUTO ANTENNA (S/DI AUTO ANTENNA (W/G) BACK DOOR LOCK (W/G wio POWER WINDOW) «= BACK UP LIGHT CHARGING CIGARETTE LIGHTER AND CLOCK COMBINATION METER CRUISE CONTROL DOOR LOCK ELECTRONIC CONTROLLED TRANSMISSION AND A/T INDICATOR (3VZ FEL ELECTRONIC CONTROLLED TRANSMISSION: AND AsT INDỊC; ATOR i5S FE) Io HBR NĂNG ẨM INTERIOR LIGHT (WIG wi KEY (LLUMINATED ENTAY+ INTERIOR LIGHT (WG wo KEY SLLUMINATED ENTRY? Gikzmg LIGHT AUTO TURN OFF RE MOON ROOE Gem POWER SEAT — POWER SOURCE — POWER Window RADIATOR FAN AND CONDENSER FAN (SS FEI HEBER PADI AND PLAYER 15/0 w/ CO PLAYER! fm *A010 AND PLAYER (SD wio CO PLAYER! WEEE _—MEHN ae mm Zz mm -= = I Ez i › RADIO AND PLAYER {WiG wi CD PLAYER? Ị PADO ANo PLAYER 1G wio CO PLAYER) REAR WINDOW DEFOGGER BE wiPFA AND WASHER mm Page © Toyota Motor Sales, U.S.A., Inc All Rights Reserved USING TOYOTA The Table of Contents WIRING DIAGRAMS With the large number of pages and sections in the EWD, the fastest way to ñnd the wiring diagram or information you need is to use the Table of Contents There are two table of contents that are available One is on the title page of the book This lists all of sections (A-K) and the also has an alphabetical list of all the System Circuit Diagrams located in Section I These wiring diagrams are the “heart” of the EWD, and the place to start when diagnosing an electrical problem There is also a listing of each System Circuit Diagram on the first page of Section I Table of Contents CAM RY HOW TO USE THIS MANUAL TROUBLESHOOTING_ B Cc ^ m wo rˆ ” = oO < ” = a œ > < oO m ¬ Page Ơ = a Oo © n > < Oo ow A œ a x m Ss ae fms od Section Code INTRODUCTION rm Fig 2-2 TOYOTA ELECTRICAL WIRING DIAGRAM ” ” EWD Asecondiabeof contents for just the System Circuit Diagrams is found at the beginning of Section | 993 G) > The table of contents is found on the title page of the EM AIR CONDITIONING (PUSH CONTROL SW TYPE) AIR CONDITIONING (LEVER CONTROL SW TYPE) arn LIGHT AUTO TURN OFE mã ahead POWER SEAT mia POWER SOURCE POWER WINDOW ae CIGARETTE LIGHTER AND CLOCK " COMBINATION METER CRUISE CONTROL DOOR LOCK ELECTRONIC CONTROLLED TRANSMISSION AND A/T INDICATOR (3VZ-FE) ELECTRONIC CONTROLLED TRANSMISSION AND A/T INDICATOR (5S-FE) ELECTRICALLY CONTROLLED HYDRAULIC COOLING FAN (3VZ-FE) ENGINE CONTROL (3VZ2-FE) ENGINE CONTROL (5S-FE) FRONT WIPER AND WASHER RADIATOR FAN AND CONDENSER FAN (5S-FE) RADIO AND PLAYER (S/D w/ CD PLAYER) RADIO AND PLAYER (S/D w/o CD PLAYER} RADIO AND PLAYER (W/G w/ CD PLAYER) RADIO AND PLAYER (W/G w/o CD PLAYER) REAR WINDOW DEFOGGER REAR WIPER AND WASHER REMOTE CONTROL MIRROR SHIFT LOCK SRS (SUPPLEMENTAL RESTRAINT SYSTEM) STARTING AND IGNITION STOP LIGHT (S/DỊ STOP LIGHT (W/G) HEADLIGHT (FOR USA) HEADLIGHT (FOR CANADA) ILLUMINATED ENTRY) fia WARNING LIGHT(§/D) TURN SIGNAL AND HAZARD WARNING 104 LIGHT (W/G) UNLOCK AND SEAT BELT WARNING OVERALL ELECTRICAL WIRING DIAGRAM © 1992 TOYOTA MOTOR CORPORATION All rights reserved This book may not be reproduced or copied, in whole or in part, without the written permission of Toyota Motor Corporation Ï TURN SIGNAL AND HAZARD 120 GROUND POINTS Page Eg mm mm TAILLIGHT (W/G) ILLUUMINATION LIGHT (S/D w/o KEY _` TAILLIGHT (S/D) 12 INTERIOR cE INTERIOR LIGHT (W/G w/o KEY ILLUMINATED ENTRV) AUTO ANTENNA ($/D) AUTO ANTENNA (WIG) BACK DOOR LOCK (W/G w/o POWER WINDOW) BACK-UP LIGHT " CHARGING INTERIOR LIGHT (S/D w/ KEY ILLUMINATED ENTRY) (NTERIOR LIGHT (W/G w/ KEY ILLUMINATED ENTRY) J K 238 _244 ] © Toyota Motor Sales, U.S.A., Inc All Rights Reserved USING TOYOTA Section | System Circuit Diagrams Advantages WIRING DIAGRAMS The EWD is built around the use of the System Circuit Diagrams These wiring diagrams provide “circuit road maps” for individual circuits or systems on the vehicle You'll find that there are a lot of advantages to using this type of diagram over the “old-style” overall wiring diagrams e More Information There is a lot of written information (such as component ID’s) on each diagram that works with the support materials/other Sections in the manual Also, the symbols that are used graphically give you information about components, connectors, or wires Understanding the full meaning of the symbols and “ID callouts” will save you time when trying to locate or identify these components on the car ¢ Easier to Use Every diagram shows only one system at a time The parallel connections to other circuits can be traced using Power Source and Ground Point sections Tracing current flow through the circuit is also easier because the power is at the top and the ground is at the bottom of each page e Printed in Color Because the diagrams are printed in color, identifying the wires shown on the wiring diagram in the vehicle harness or at the connectors is a lot easier | System Circuit Diagrams | ' | | | eet B) RADIATOR FAN ee AND CONDENSER FAN ee (5S-FE) FROM POWER SOURCE SYSTEM (SEE PAGE 58) #1 Wể *M/ A/C :M/0 A/C The entire EWD is built around the System Circuit Diagram Every number, letter, shape, and shading on the diagram tells you information that can help you to locate or identify components on the car faster Fig 2-3 A/C HIGH PRESSURE Sự t1) | K2 Az SHORT PIN Le ⁄ RADIATOR FAN RELAY No.2 MAGNETIC CLUTCH RELAY v R1 r a RADIATOR FAN MOTOR M RADIATOR FAN RELAY NO.3 E5 : WATER TEMP SW CFOR COOLING FAN) | wa i Page © Toyota Motor Sales, U.S.A., Inc All Rights Reserved USING TOYOTA (Parenthesis), and @) RADIATOR the Title at the Top Specific FAN AND CONDENSER FROM POWER SOURCE SYSTEM (SEE PAGE FAN (5S-FE) RXB Ey _Engine Compartment LFZT[šzzm or 3V cole E h cc RADIATOR RELAY —®:> ee CANADAN lu (for 5S-FE) HEAD Oa {for CANAI LH} Connector Pin Number 15A HEAD 18) `] a A/C Magnetic D Clutch Relay ; Daytime Running Light Relay No {for CANADA) | EAO 154 HEAD | _————— Deyume Tung Light Relay No t1 a on ] +) -RH) Fuse Fuse Left (See Page a Relay i i Opening Circuit i | CODE | \SEE PAGE | JUNCTION BLOCK AND WIRE HARNESS (CONNECTOR LOCATION) vehicle Fig | = (ats] SEE the relay it is connected to Section cone + PARTS LOCATION Ạ ID the proper connector by and RADIATOR FAN AND CONDENSER © HEAD {LWR-RH) (for CANADA) (LWR- (LWR-LH) Fuse Fuse Magnetic Ss Clutch Relay Fan Relay No NUNG F rladiatar No adiator Fan Relay Vv 05 Connector Page © Toyota Motor Sales, U.S.A., Inc All Rights Reserved USING TOYOTA Components/Parts Key WIRING DIAGRAMS All loads, relays, switches, ECU-type controllers, capacitors (noise filters) and isolation diodes are treated as component parts in the circuit Features e ID Numbers Each component connector has an ID number This ID number usually begins with the first letter of the name of the component (This is unlike the splice points and harness-to-harness connectors which use the letters E, I, and B to indicate engine compartment, instrument panel, or body wiring harness location.) Use the ID number with the parts location table that follows each wiring diagram This will refer you to a harness connector diagram in Section G where the component connector’s location is shown e “Light Blue” Shading Parts are always shaded in blue ¢ Common Connectors When parts or circuits use a common connector (such as the headlight and turn signal circuits using the combination switch connector) the connector name used in the Section G Wire Routing diagram is shown in brackets under the component name Electrical Components/Parts RADIATOR © All electrical components are [ shown withi connector ID uses is also part of other — circuits, the name called-out in the location diagram is listed in brackets Fig 2-8 C00E al —+—kš numbers, and light blue shading If the connector it + PARTS $ SEE PAGE Engine Compartment (FOR FAN) C0DE / 2) OOO €6) r AND CONDENSER † LênE6 _ FAN(5S-FE)@) SEE PAGE TẾ29 [ - _ [5S-FE] ] ¡ COE —-~ tT | | Ÿ SEE PAGE —| | _Position of Parts in Engine Compartment tũ - â}ii OO OOđ ) :89 @ G) (+8) @2 @ E5 WATER TEMP FAN LOCATION SW COOLING @ , _ E5 Engine Coolant Temp Sensor (Water Temp Sensor! or Cooling Fan, -FE! or Water Temp SW (for Cooling Fan, 5S-FE} | lu ep:iN | | H ics Air Control Valve 36Valve} Park/Neutral Position SW (Neutral R Radiator Fan Motor (for 5S-FE} S$ 1° Solenoid Valve (for Hydraulic Moto ' iran b front Airbag Sensor LAI ! ! Injector No jnjector No S$ Start Injector Time SW (for 3VZ-FE) F F F | | $10 (for 3VZ-FE) Injector No (for 3VZ-FE} ake Aur Temp Sensor (in-Air Temp S F9 Front Wiper Motor ight F10 Fuse Box K Knock Sensor Front (far 3VZ-FE) or Knock Sensor (for 5S-FE} Knock Sensor Rear (for 3VZ-FE} generator falter M1 H Headlgne i Re N 1) Noise Filter (for Ignition System) i H5 H Headlight Horn " Horn RH Q O O03 Ol Pressure SW Oxygen Sensor ifor California, 5S-FE} Oxygen Sensor Front iMain For 3VZ-FE) or Oxygen Sensor (Main, for §S-FE) Oxygen Sensor Rear (Main, for 3VZ-FE) F Front Clearsnee Lightnt LHRH Front Clearance Ro", b P | Injector No Injector No Front Side Marker LH Front Side Marker RH ER Front Turn Signal Light Ud K te RH OQ Page S Starter Starer Sensor} (for Manifold Absotute Pressure Sensor (Vacuum Sensor) {for 5S-FE) © Toyota Motor Sales, U.S.A., T Throttle Position Sensor V VSV (for A/C ldle-Up, SS-FE) V2 V3 V V5 V6 V7 VSV (for EGR System, 5S-FE) VSV (for Fuel Pressure Up, 3VZ-FE) VSV (for Intake Air Control, 3V2-FE Vehicle Speed Sensor (Speed Sens: Vehicle Speed Sensor (Speed Sensi Electronic Controlled Transmission] Voiume Air Flow (Air Flow Meter) (3 W1) Washer Motor W2 Water Temp Sender Inc All Rights Reserved USING TOYOTA Pin Numbers and Connectors WIRING DIAGRAMS Whenever a wire is connected to an electrical component, the pin number is listed next to each wire These pin numbers correspond to the connector diagrams provided in the support section which follows each wiring diagram Key Features ¢ Connector ID Connectors at the component are identified by the component connector ID number Connector Color The color of the connector is white unless another color is listed Pin Numbering Connector pin numbers are always shown from the mating side of the connector, not the “harness” side of the connector If you are backprobing the connector for a voltage check, remember that the pin numbering becomes the “mirror” of what is pictured in the diagram ‘HINT _— Use the wire color in the wiring diagram to “double check” that you are looking at the correct pin e Dot in the Connector A“e” in the connector cavity indicates that the cavity is used but by another circuit X in the Connector An X in the connector indicates that the cavity is empty Multiple Connectors on a Single Component If there are multiple connectors on a single component (such as on the TCCS ECM), each connector will have an individual parts/ connector ID number, and will also be identified with a “letter in a circle” This letter in a circle is used as a “shorthand” way to ID the connector next to each of the pins, and is also used on the connector diagrams that follow the System Circuit Diagram Page © Toyota Motor Sales, U.S.A., Inc All Rights Reserved USING TOYOTA single component, a letter is assigned as a “call-out” for that connector z #20 11 7@„: E A/C n Vsý CFOR ei RAD - 9) 12 Fig 2-9 ISCC E10 L6 pa SOBRE Ds BATT than one connector for a G | Pin numbers are next to the wire Use the component ID number to find the connector diagram which is part of the support section The pin numbers are shown from the front or “mating” side of the connector, and not the harness side If there is more IDLE-UP) 1 IDLE AIR CONTROL VALVE CISC VALVE) tị Pin Numbering on the EWD WIRING DIAGRAMS 10 ENGINE 1sco TSCV CONTROL MODULE EGR (ENGINE s@,rto() CONTROLLED TRANSMISSION ECU) a NSW ve VIA ANU +8 ELECTRONIC IDL TO PARI POSITION\SW CNEUTRAL START SW) Part/Connector ID Number Multiple Connector ID Letter Color of Connector (if blank - WHITE) Pin Number Ð All Connectors are viewed from the BLACK == E MATING side CC) Cavity used by GREEN E1 another circuit eyes 4) BARK GRAY Sjey7 xia ! ° x|s xịš ele Cavity Empty E 8@) DARK GRAY BLACK FIG DARK GRAY GRAY a x[sJ5IxISTsTsIxin Vaal xx] x [x [x] fale? nm DHHBHHBNBD BEĂẰEEmE) E10(A) DARK GRAY 13 BLACK Page 418,1 10 6,17 GRAY © Toyota 110 GRAY Motor Sales, U.S.A., Inc All Rights Reserved USING TOYOTA Connector Joining _ ess and WIRING DIAGRAMS A connector joining wire harness and wire harness or “harness-to- harness connector” is located within the harness, and is not found at an individual component ¢ ID Numbers ID numbers will begin with E for engine, I for instrument panel, and B for body Use the ID number to find the connector in Section G of the EWD ¢ Connector Diagrams Diagrams for these connectors are not located with the component connectors which follow the wiring diagram Because these connectors are used in a number of different circuits, all the information about them is located in Section G of the EWD The Wire Harness Joining Wire Harness location table describes the location and tells you the page to turn to for the location diagram and connector/ pin details e Male and Female Terminals Male and female terminal side of the harness is shown by the shape of the symbol Wire Harness to Wire Harness Connectors Harness-to-harness connectors use a 3-digit ID number Information on the connectors is located in Section G of the EWD Fig 2-10 Bal | Connectors with FEMALE terminals are numbered left to right ` Connector Joining Wire Harness to Wire Harness ID Number + _ “il L2 LIGHT | | ÏÏš[% Connectors with MALE 5| x yg; terminals are numbered ight to left right to le Mating End of Connector FAILURE SENSOR DELAY HOLD ——{: R (W/O REAR SPOILER) G-W (W/ REAR ORAS ERS oR ROT EG RATS PARRA AG I LIOR BIE Pin Number 11 — SPOILER) Shape of the symbol tells you which half of the harness Page has the male or female terminals 11 © Toyota Motor Sales, U.S.A., Inc All Rights Reserved USING TOYOTA WIRING DIAGRAMS Locating a Harness-to-Harness Connector Use the Location ID number Table Si H ection : numbering G Turn page and a r—— SYSTEM OUTLINE CURRENT IS APPLIEO AT ALL TIWES THROUGH A BTOP FUSE TO TERNIWAL OF THE STOP LIGHT SW on the to the WHEN STOP H pin : location 2-1 g J8M]TIQM LIGHT WHEM fe or EM ]§$ TUQWED OW, CUARENT FLOWS FROM BRAKE PEDAL THE GAUGE FUSE TO TERMINAL THE 1,2, OISCOWMECTION [6MITIOM 7-GROUMD $W APPROX + B-OROUNO: APPROX TU-GROUNO: ALWAYS : PARTS CODE c3 Hi vy ta LS WARNING TURMED OM AMD THE L$ PRESSED {STOP LIGHT Ẳ 12¥OLTS WITH STOP T2YOLTS WITH IGHITIOM LIGHT Se S¥ AT STOP LIGHT CIRCUIT Is $0 THỂ LIPHT F4†LUEE GROUND AND TURWS THE OF THE LIGHT FAILURE OFF AM OM POSITION PAGE COE w2] N3 | ne "3 SEE | 30 E° 30 sĩ Mí jSTRUMENT PANEL COWL IRE ANO J/B mo [FUOGR WO WIRE AMO J/B NO.I (INSTRUMENT [COWL SIRE AMO J/B NO.1 {INSTRUMEMT PANEL SEE PAGE SHOIMING PAGE LEFT PANEL LEFT) } CODE cr Ri s0 WIRE HARNESS 1â 4218/01 42(9/0) CODE | GROUND POINTS SEE PAGE | GROUND POIWTS LOCATION &L 42(8/0) TTT77TI ba (87D) AND WIRE HARNESS LUGGAGE ROOM HO.1 WERE AMO FLOG@ FLOOR #Ũ_! WIRE ANG LUGGAGE ROOM FR UNOFR | BACK TH THE LEFT PAWEL NO.F NO.2 Pace - _ ] | } ELECTRICAL WIRING ROUTING = LOCATIONE (LUGGAGE (LUGGAGE COMPARTNENT COMPARTMENT LEFT) DOOR) ] QUARTER PILLAR ] POINTS 42(S/ acr\ (CONNECTOR MIRE WIRE CEWTER SEE\PAGE | WIRE HARNESS WITH SPLICE POINTS FL008 ÑO.( WIRE \ LUGBAGE ROOK NO + WIRE cope | SEE PAGE | WIRE HARNESS WITH SPLICE POINTS 826 | 42(5/0: LUGGAGE ROOM NO I WIRE ast 42(8/0) LUGGAGE ROQM NO.2 WIRE £32 Connector Joining Wire Harness and Wire Harness Location of C ctor Joining Wire Harness and Wire Harness Location of Ground Points ; [By] SEE 3t 3o LEFT) FLOOR WO WIRE AMO COWL WINE (LEFT MICK PANEL! ott Bạt + SRLICE RY THE AND ‹: C0NRECT0R JOINING WIRE HARNESS AND WIRE HARNESS 1ú) Roof Wire IF SENSOR CONTINUITY SEE 3 3o x | 20 [ao £008 [Sedan] ON} FAILURE LOCATION te | 2o | 1H Lm - LIGHT SW © + JUNCTION BLOCK AND WIRE HARNESS CONNECTOR [ cove | see Pace [suwcTioN BLOCK AND WIRE HARNESS {CONNECTOR LOCATION UU G_ THE SERVICE HINTS sis STOP LIGHT S¥ 2- (CLOSED WITH BRAKE PEOAL DEPRESSED L? LIBHT FÁILURE SENSOR © [ 1: V_: OF 0PEk, THE CUREENT FLOWING FRÔM TEEMTMAL$ ? IF THẸ ((EMT FAILURE $ENS0# TƠ TERNIMAL$ 1,2 CHANGES BEMSOR DETECTS THE OLSCONNECTION AND THE WARMING CIRCUIT OF THE LIGHT FAILURE SENSOR 1S ACTIVATED AS A RERULT, THE CURRENT FLOWS FROM TERMIWAL OF THE CIENT FAILURE SENSOR —> TERMINAL 11 —> REAR LIGHT WARMING LIGHT ON BY PRESSING THE BRAKE PEDAL, THE CURREMT FLOWING TO TERMIMAL SENBOR KEEPS THE WARMING CIRCUIT ON HOLD ANO THE WARNING LIGHT OM UNTIL THE IGNITION SW 18 TURNEO diagram Fit THE ALSO FLOWS THROUGH THE REAR LIGHT WARNING LIGHT TO TERMINAL OF THE LIGHT FAILUGE SENSOR Resr DoorRHWeE — Floor No Wire \_ G CS i V Luggage Room No Wire VOIMING WIRE HARNESS AMO WIRE WARNESS (COMMECTOR LOCATION) REAR DOOR LK WIRE ANO FLOOR ND WIRE (LEFT CEMTER PILLAR) FUEL GAUGE GAUGE WIME WIRE AND AWD FLOOR FLOOR WOWO | WIRE WIRE {UNDER (UNDER THE THE FO REAR BEAT CUSHION) {| FUEL oO REAR Floor No Wire ews Rear Door LH Wire | © : Location of Splice Points Fuel Gauge Wire [221] DOOR RH WIRE AND FLOOR MŨ WIRE (RIGHT CENTER PILLAR) LUGGAGE ROOM NO WIRE AND FLOOR WO | WIRE [LUGGAGE CDKPARTNERT LEFT) FLOOR NO I WIRE AND LUGGAGE ROOW KO WIRE (LUGGAGE COMPARTMENT DOOR} Luggage Room No Wire | @),€) Page 12_ © Toyota Motor Sales, U.S.A., Inc All Rights Reserved USING TOYOTA Switches and WIRING DIAGRAMS A simple single-pole, single-throw switch is relatively easy to understand on Relays „ wiring diagram However, if the switch is a multi-pole (has more than one pin that is being switched), or gang type switch (where the movement of the switch lever moves a number of switches open or closed), the symbol used on the wiring diagram can be more difficult to understand Key Features ¢ Switches are shown in the OFF position All switches and relays are shown in the OFF position you know that the relay coil is not “energized” If it’s a relay, ¢ Multi-pole Switches For multi-pole switches such as the Combination Switch, or the Heater Fan Switch, the schematic symbol is a little more complicated A circle and line indicate which pins are connected together under each of the different switch positions On the Heater Fan Switch, a “bus bar” is moved for each switch position, changing the pin connections in the switch e “Gang” type Switches If it is a fairly simple “gang” type switch, a dotted line inside the switch will connect the “arms” of the switches together There is continuity between Switches Pin 10 and Pin in the OFF position Multi-pole switches can be a tricky to follow In some | HAZARD_ SW switches, a circle and line indicates which pins are connected in a particular switch position On some switches, a “bus bar” is used to show the various pin 10 HAZARD connections Fig 2-12 “sensor”, look at the System Outline or Service Hints for the conditions that cause it to be open or closed Example of Gang-type switch in Remote Control Mirror Switch Assembly _ XS ™~ Ny bf In the M1 Position, there is continuity between Pin and 4, and Pin and | \ LH Page 13 j DOWN + If the switch is used as a RIGHT Ox =“ Relays are shown DE-ENERGIZED LEFT cu » $l a >» © Toyota RH Motor Sales, Ï U.S.A., Inc All Rights Reserved USING TOYOTA Shielding CAUTION WIRING DIAGRAMS On low voltage/low current flow wires (such as those used on the oxygen sensor, knock sensor, and distributor G and Ne signals) shielding is used When a wire is shielded, an additional ground wire is wrapped around the insulation of the low current wire to absorb any electro-magnetic interference In the EWD, shielding is represented by a dotted line around a wire Do not confuse this with the dotted line used inside a multi-pole “gang” type switch When checking for voltage in a circuit that uses shielded wires, NEVER puncture the insulation with the test probe! This will short the sensor wire to the ground Shielded Wires | Shielded wires are indicated by a dotted line around a the wire NEVER probe through the insulation of a shielded wire—a shortto-ground will result POWER FROM g_WoR SOURCE SYSTEM (SEE PAGE 58) £ 8-0 Fig 2-13 W lê +B là: DATA LINK CONNECTOR CCHECK CONNECTOR) Te YE2 VFT TT FP 13 , | | h | _- _  r{n Đ& ) 15 ` ? iL 14B} 5B) 11 | ! — CIRCULT RELAY OPENING i I [ +i ; WE — STA N14 NOISE :rŒxs O.w®" TẾT TRỤ VE ENGINE CONTROL WOBULE (ENGINE AND ELECTRONIC CONTROLLED TRAMSHERSION ECU oxi ei omg + SYSTEM) _ ay * x ĩ FILTER Gisereseee) il}hh s 174 IGNITION | 16 ! (FOR Shielding on low ——————| STOP POWER 40A_ DEFOG 75A ALTS 10A 15A 15A BA YA 142 c„ Ặ ` =F tŠNgšfpý Si Bz BB 111 (13 I14 K3 LI|L2 N2 O1 O5|P1 va PK § §b|šx Sv SẼ Ô độ & 29/5 25 58 § Fr SHezeheh oss e P2 P3 P4 PS rn e ° eee e | oe ~ e | OO e e DOME EFI HAZ-HORN CDS FAN RDI FAN : šs t3 t4 M2M3|MS 2o a 170 gš WARNING s eịe © STARTER HEAD (RH) (USA) | HEAD (LH) (USA) Tiarecm inna ch 20A 15A e e eeee > ˆ ° & HE, 16A Tá Regen > a lø| 116] g Slig EELS GAUGE 30A 110, 114 2225 Flog ee Seal ep | Elz see § 8g Š š š Š š|Š 3755 šSẽ|š 108 MIR ATR 25A * 120 ¡Š š E|Sốš SẺ Y ý o 1k gue : 110 278 rae 215 188/188 tas tag "7? saaliaa38 aze, tao 157 tee)” vo] 189 794) 194 Nos of [ize “Page Related Systems}30 trace the circuit back to the Fuse Gauge Information POWER SOURCE (Current Flow Chart) use † se [1 #8 fuse is OK, but not receiving (S/D) FROM POWER SOURCE SYSTEM (SEE PAGE 58> Use this table to find other components that use the same fuse If the other component works, the fuse is OK._lf you fnd that the B+ WIRING DIAGRAMS 7.5A_ DRL (Canadài * These are the see of the first page on which the related system 1s show! The part indicated vs IOxated somewhere in the system nor necessarily on the page indicated here “ | ‘| h" Ị | Sxtexaror et {ALTERWATORD : '| rl a < ~Zo] h fe sẻ : 3Í gsz.owr-re €30:(5S-FE) = w C———— FID FUSE BOX a) —- =—— = te e T3 of I +- i| T0 =” ABS ACTUATOR H sử Ị Ị f† t2 GNITION su | J Mia dat Gé Ơ ny ` w â =$ = ==H R10 oR we bat / L ad bu Mg, BR we ‹ cues | of eh q y= i de oe w TEANRDA) sect] _ = S E5 ã i nats STARTER RELAY I TO STARTER SLBwhine wo eh - w ‹ anes So 15A HEAD CLWR=LK? — 081 ' now R eR ấ offs 7= DAYTIME RUNNING LIGHT RELAY WO.2 if ==: TH K2 RL z 7.54 ORL R ịi { ah VY Page 18 © Toyota Motor Sales, U.S.A., Inc All Rights Reserved USING TOYOTA Ground Distribution WIRING DIAGRAMS —[n the electrical system, a load’s ground point is often shared with other circuits If another circuit which shares the tive circuit works properly, then you know OK This does not eliminate the possibility of the circuit, or a poor connection problem “stacked” onto a single ground point Key Features ground point with your inoperathat the grounding point is of a problem on the ground side between ground point terminals ¢ Ground Point ID To check the grounding point, look for the triangle shaped ground symbol on the bottom of the page All ground points have a twoletter ID number: the first letter represents Engine, Instrument panel, or Body, the same as with the splice points and harness-toharness connectors e Finding Circuits Which Share the Ground Point Using the Ground Point ID, turn to Section J, Ground Point, in the EWD In this section, each ground point is listed with the names of all components and splices that are connected to it e Locating the Ground Point on the Vehicle If you determine that there is a problem with the ground, use the Ground Point Location table that follows the system circuit diagram, for a description of the ground location, and the page number to turn to for a diagram of where the ground point is located HI6H STOP COMB MOUL _LIG! STOP LIGHT } COMB |THE CREAR H30 LIGHT CREAR R9 STOP LIGHT RHJ URE RE bd R10 STOP LIGHT CREAR_COMB RH LH] LIGHT LK COMB CREAR RB STOP LIGHT Look at the “triangle” for the ground ID number For location of the ground on the vehicle, use the ground location table in the support section | Ground Points xơ 20 oO Find ” point the by Ground ground we ° using oz! the Bel ID number HL LHUIH Fig 2-17 [Oreo ep OT m„rKUrxr-r [COWL WIRE AND J/8 NO.) (INSTRUMENT PANEL LEFT) ' CONNECTOR JOINING WIRE HARNESS AND WIRE HARNESS SEE PAGE | JOINING WIRE HARNESS AND WIRE HARNESS (CONNECTOR LOCATION) [3 FLOOR WO.1 WIRE ANO COWL WIRE (LEFT KICK PAWEL] I§/D} 4215/0) LUGGAGE ROOM FLOO! O.1 NO WIRE WIRE ANO AND FLOOR NŨ.I WIRE (LUGGAGE COMPARTMENT LEFT) ROOM NO.2 WIRE {LUGGAGE COMPARTMENT DOOR) LUGGAGE V/ + crounn P0INTS | CODE r> BL B0 ©) CODE Bis SEE PAGE 4218/0) GROUND 1419/61 UNOFR 4218/0) BACK POINTS THE LOCATION LEFT PAWEL GUARTER PILLAR CENTER + sevice pornts SEE PAGE WIRE HARNESS 42(S/D} FLOOR 42(8/D) LUGGAGE NO.I WITH SPLICE POINTS WIRE €00E B26 B30 ———— B31 Page 19 ROOM NO.I WIRE © Toyota SEE PAGE 42(S/D} 42(S8/0) WIRE HARNESS WITH LUGGAGE ROOM WO.1 LUGGAGE ROOM NO SPLICE WIRE POINTS WIRE B32 Motor Sales, U.S.A., Inc All Rights Reserved USING TOYOTA Section J Ground Points J GROUND Look at Section J, Ground en Point, for circuits that share the ground, or redundant ground paths CONTROL (ENGINE WIRING DIAGRAMS POINT DATA AND LINK ESHER eetecrns ECU) SENSOR Fig 2-18 FAN ECU CONNECTOR CTpCL) OXYGEN SENSOR SENSOR (SUB CONNECTION CALIFORNIA ON METER (3VZ-FE) FUEL SENDER OXYGEN SENSOR —- ~ - = = a LÀN - —_ :-|HI6H MDUMT ST0P Follow the ground ID number to Section J and to Section G G_ ELECTRICAL WIRING ROUTING `1 iL Location of Connector Joining Wire Harness and Wire Harness SỐ _ : Location of Ground Points _ [Se da c— n] Roof Wire Rear Door LH Wire Floor No Wire |_© : Location of Splice Points Page _ Rear Door RH Wire EK 20 JBX1| HS © Toyota vi TH Fuet Gauge Wire |8Z1| aaaa Motor Sales, Luggage Room No Wire U.S.A., Inc All Rights Reserved  ... _244 ] © Toyota Motor Sales, U.S.A., Inc All Rights Reserved USING TOYOTA Section | System Circuit Diagrams Advantages WIRING DIAGRAMS The EWD is built around the use of the System Circuit Diagrams... © Toyota Motor Sales, U.S.A., Inc All Rights Reserved USING TOYOTA Switches and WIRING DIAGRAMS A simple single-pole, single-throw switch is relatively easy to understand on Relays „ wiring diagram. .. WAGON models OLATOR FAN RELAY 238 Page © Toyota Motor Sales, U.S.A., Inc All Rights Reserved USING TOYOTA Understanding WIRING DIAGRAMS On each System Circuit Diagram, there is a lot of information