FOREWORD TOYOTA MOTOR CORPORATION

Transcription

1 FOREWORD This wiring diagram has been prepared to provide information on the electrical system of the 990 TOYOT CELIC ll Trac/WD. pplicable models: ST85 Series For service specifications and repair procedures of the above models other than those listed in this manual, refer to the following manuals; Manual Name 990 Celica Repair Manual 990 Celica ll Trac/WD Repair Manual Supplement 990 Celica New Car Features Pub. No. RM9U RM76U NCF056U ll 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. TOYOT MOTOR CORPORTION NOTICE This vehicle has an SRS IRG (referred to as the airbag in the remainder of this manual). When handling airbag components (removal, installation or inspection, etc.), always follow the directions given in the repair manuals listed above to prevent the occurrence of accidents and airbag malfunction.

2 INTRODUCTION This manual consists of the following sections: No. Section Description INDEX Index of the contents of this manual. INTRODUCTION rief explanation of each section. HOW TO USE THIS MNUL Instructions on how to use this manual. TROULE SHOOTING Describes the basic inspection procedures for electrical circuits. 5 REVITIONS Defines the abbreviations used in this manual. 6 GLOSSRY OF TERMS ND SYMOLS Defines the symbols and functions of major parts. 7 RELY LOCTIONS Shows position of the Electronic Control Unit, Relays, Relay lock, etc. This section is closely related to the system circuit. 8 ELECTRICL WIRE ROUTING Describes position of Parts Connectors, Splice points, Ground points, etc. This section is closely related to the system circuit. 9 POWER SOURCE (Current Flow Chart) Describes power distribution from the power supply to various electrical loads. 0 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. GROUND POINTS Shows ground positions of all parts described in this manual. OVERLL WIRING DIGRM Provides circuit diagrams showing the circuit connections.

3 HOW TO USE THIS MNUL This manual provides information on the electrical circuits installed on vehicles by dividing them into each system circuit. 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. (ll 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 Points 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 Wire 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 Wiring Diagram at the end of this manual.

4 HOW TO USE THIS MNUL

5 C : System Title : Indicates a Relay lock. No shading is used and only the Relay lock No. is shown to distinguish it from the J/. Example: Indicates Relay lock No.. : Indicates the connector to be connected to a part (the numeral indicates the pin No.) Explanation of pin use. J : Indicates the wiring color. Wire colors are indicated by an alphabetical code. = lack L = lue R = Red R = rown LG = Light Green V = Violet G = Green O = Orange W = White GR = Gray P = Pink Y = Yellow The first letter indicates the basic wire color and the second letter indicates the color of the stripe. Example: L Y (lue) (Yellow) D The pins shown are only for the highest grade, or only include those in the specification. : Connector Color Connectors not indicated are milky white in color. K : Indicates a wiring Splice Point (Codes are E for the Engine Room, I for the Instrument Panel, and for the ody). Example: E F : ( ) is used to indicate different wiring and connector, etc. when the vehicle model, engine type, or specification is different. : Indicates related system. G : Indicates the wiring harness and wiring harness connector. The wiring harness with male terminal is shown with arrows ( ). Outside numerals are pin numbers. ll connectors are shown from the open end, and the lock is on top. L M The Location of Splice Point I 5 is indicated by the shaded section. : Page No. : Indicates a sealed wiring harness. N : Indicates a ground point. H I 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 for the ody and Surrounding area. When more than one code has the first and second letters in common, followed by numbers (e.g., IH, IH), this indicates the same type of wiring harness and wiring harness connector. : Represents a part (all parts are shown in sky blue). The code is the same as the code used in parts location. : Junction lock (The number in the circle is the J/ No. and the connector code is shown beside it). Junction locks are shaded to clearly separate them from other parts (different junction blocks are shaded differently for further clarification). O 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 for the ody and Surrounding area. : Indicates the pin number of the connector. The numbering system is different for female and male connectors. Example: Numbered in order from upper left to lower right Numbered in order from upper right to lower left Example: indicates that it is inside Junction lock No.. P : When parts both use one connector in common, the parts connector name used in the wire routing section is shown in square brackets [ ]. 5

6 HOW TO USE THIS MNUL Q R S T U V W X 6 SYSTEM OUTLINE WITH THE IGNITION SW TURNED ON, THE CURRENT FLOWS TO TERMINL OF THE POWER WINDOW MSTER SW, TERMINL OF THE POWER WINDOW CONTROL RELY ND TERMINL 8 OF THE POWER WINDOW SW THROUGH THE DOOR FUSE.. DRIVER S WINDOW MNUL UP OPERTION Y MSTER SW HOLDING MNUL SW (DRIVER S) ON UP POSITION LOCTED IN POWER WINDOW MSTER SW, THE CURRENT FLOWS TO TERMINL 5 OF THE POWER WINDOW CONTROL RELY THROUGH TERMINL OF THE MSTER SW TERMINL TO OPERTE POWER WINDOW CONTROL RELY. THUS THE CURRENT INSIDE THE RELY FLOWS FROM TERMINL OF THE RELY TERMINL TERMINL OF THE POWER WINDOW MOTOR TERMINL TERMINL OF THE RELY TERMINL TO GROUND. THE MOTOR TURNS TO SCENT THE WINDOW. RELESING THIS SW, THE ROTTION OF MOTOR IS STOPPED ND THE WINDOWS CN STOP T WILL POINT. (FOR THE MNUL DOWN OPERTION, CURRENT FLOWS IN THE REVERSE DIRECTION ECUSE THE TERMINLS WHERE IT FLOWS RE CHNGED).. DRIVER S WINDOW UTO DOWN OPERTION Y MSTER SW ONCE THE UTO DOWN UTTON OF THE MSTER SW IS PUSHED, THE CURRENT FLOWS TERMINL 9 OF THE POWER WINDOW CONTROL RELY THROUGH TERMINL OF THE MSTER SW TERMINLS 8 ND 9 TO OPERTE THE RELY. THUS THE CURRENT INSIDE THE POWER WINDOW CONTROL RELY FLOWS FROM TERMINL OF THE RELY TERMINL TERMINL OF THE POWER WINDOW MOTOR TERMINL TERMINL OF THE RELY TERMINL TO GROUND. THE MOTOR CONTINUES THE ROTTION ENLING TO DESCENT THE WINDOW. THE WINDOW DESCENDS TO THE END POSITION. THE CURRENT WILL E CUT OFF TO RELESE THE UTO DOWN FUNCTION SED ON THE INCRESING CURRENT ETWEEN TERMINL OF THE RELY ND TERMINL IN RELY.. DRIVER S WINDOW UTO DOWN RELESE OPERTION Y MSTER SW HOLDING THE MNUL SW (DRIVER S) ON UP POSITION IN OPERTING UTO DOWN. THE CURRENT FROM TERMINL OF THE MSTER SW PSSING TERMINL FLOWS TERMINL 5 OF THE RELY ND RELESES THE UTO DOWN FUNCTION IN THE POWER WINDOW CONTROL RELY. RELESING THE HND FROM SW, WINDOW STOPS ND CONTINUING ON TOUCHING SW, THE FUNCTION SWITCHES TO MNUL UP OPERTION.. PSSENGER S WINDOW UP OPERTION (MSTER SW) ND WINDOW LOCK SW OPERTION HOLDING PSSENGER S WINDOW SW (MSTER SW) ON UP, THE CURRENT FLOWS FROM TERMINL OF THE MSTER SW PSSING TERMINL 6 TO TERMINL OF THE POWER WINDOW SW (PSSENGER S) TERMINL TERMINL OF THE MOTOR TERMINL TERMINL 9 OF THE POWER WINDOW SW TERMINL 7 TERMINL OF THE MSTER SW TERMINL TO GROUND. THE MOTOR RUNS TO SCENT THE WINDOW. RELESING THIS SW, THE ROTTION OF MOTOR IS STOPPED ND WINDOW CN STOP T WILL PLCE. SWITCHING THE WINDOW LOCK SW IN LOCK POSITION, THE CIRCUIT IS OPENED ND STOPPED THE MOTOR ROTTION. (FOR THE DOWN OPERTION, CURRENT FLOWS IN THE REVERSE DIRECTION ECUSE THE TERMINLS WHERE IT FLOWS RE CHNGED). SERVICE HINTS P POWER WINDOW CONTROL RELY GROUND: LWYS CONTINUITY GROUND: PPROX. VOLTS WITH IGNITION SW T ON POSITION 5 GROUND: PPROX. VOLTS WITH IGNITION SW T ON POSITION ND MSTER SW T UP POSITION 8 GROUND: PPROX. VOLTS WITH IGNITION SW T ON POSITION ND MSTER SW T UTO DOWN POSITION 9 GROUND: PPROX. VOLTS WITH IGNITION SW T ON POSITION ND MSTER SW T DOWN OR UTO DOWN POSITION P POWER WINDOW MSTER SW GROUND: LWYS CONTINUITY GROUND: PPROX. VOLTS WITH IGNITION SW T ON POSITION WINDOW LOCK SW OPEN WITH WINDOW LOCK SW T LOCK POSITION : PRTS LOCTION CODE SEE PGE CODE SEE PGE CODE SEE PGE P P P6 P P5 : RELY LOCKS CODE SEE PGE RELY LOCK (RELY LOCK LOCTION) 6 R/ NO. (INSTRUMENT PNEL LEFT SIDE) : JUNCTION LOCK ND WIRE HRNESS CONNECTOR CODE SEE PGE JUNCTION LOCK ND WIRE HRNESS (CONNECTOR LOCTION) J/ NO. ND COWL WIRE (INSTRUMENT PNEL LEFT SIDE) : CONNECTOR JOINING WIRE HRNESS ND WIRE HRNESS CODE SEE PGE JOINING WIRE HRNESS ND WIRE HRNESS (CONNECTOR LOCTION) ID 6 FRONT DOOR RH WIRE ND COWL WIRE (RIGHT KICK PNEL) IH 6 FRONT DOOR LH WIRE ND COWL WIRE (LEFT KICK PNEL) : GROUND POINTS CODE SEE PGE GROUND POINT LOCTION IC COWL LEFT : SPLICE POINTS CODE SEE PGE WIRE HRNESSES WITH SPLICE POINTS I5 COWL WIRE

7 Q R S : Explains the system outline. : Indicates values or explains the function for reference during troubleshooting. : Indicates the reference page showing the position on the vehicle of the parts in the system circuit. Example: Part P (Power Window Master SW) is on page of the manual. * The letter in the code is from the first letter of the part, and the number indicates its order in parts starting with that letter. Example: P Part is th in order Power Window Master SW T U V W X : Indicates the reference page showing the position on the vehicle of Relay lock Connectors in the system circuit. Example: Connector is described on page 6 of this manual and is installed on the left side of the instrument panel. : Indicates the reference page showing the position on the vehicle of J/ and Wire Harness in the system circuit. Example: Connector connects the Cowl Wire and J/ No.. It is described on page of this manual, and is installed on the instrument panel left side. : 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 ID connects the front door RH wire (female) and cowl wire (male). It is described on page 6 of this manual, and is installed on the right side kick panel. : Indicates the reference page showing the position of the ground points on the vehicle. Example: Ground point IC is described on page of this manual and is installed on the cowl left side. : Indicates the reference page showing the position of the splice points on the vehicle. Example: Splice point I 5 is on the Cowl Wire Harness and is described on page of this manual. HINT: Junction connector (code: J, J, J, J, J5, J6) in this manual include a short terminal which is connected to a number of wire harnesses. lways perform inspection with the short terminal installed. (When installing the wire harnesses, the harnesses can be connected to any position within the short terminal grouping. ccordingly, in other vehicles, the same position in the short terminal may be connected to a wire harness from a different part.) Wire harness sharing the same short terminal grouping have the same color. 7

8 HOW TO USE THIS MNUL 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. 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 reaker, Fuse, etc.) and other parts. The next page and following pages shown the parts to which each electrical source outputs current. POWER SOURCE 8

9 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 (,, and shown below) can also be checked this way. GROUND POINTS 9

10 TROULESHOOTING VOLTGE CHECK (a) Establish conditions in which voltage is present at the check point. Example: Ignition SW on Ignition SW and SW on Ignition SW, SW and Relay on (SW off) (b) Using a voltmeter, connect the negative lead to a good ground point or negative battery terminal, and the positive lead to the connector or component terminal. This check can be done with a test light instead of a voltmeter. CONTINUITY ND RESISTNCE CHECK (a) (b) Disconnect the battery terminal or wire so there is no voltage between the check points. Contact the two leads of an ohmmeter to each of the check points. If the circuit has diodes, reverse the two leads and check again. When contacting the negative lead to the diode positive side and the positive lead to the negative side, there should be continuity. When contacting the two leads in reverse, there should be no continuity. (c) Use a volt/ohmmeter with high impedance (0 kω/v minimum) for troubleshooting of the electrical circuit. 0

11 FINDING SHORT CIRCUIT (a) Remove the blown fuse and disconnect all loads of the fuse. (b) Connect a test light in place of the fuse. (c) Establish conditions in which the test light comes on. Example: Ignition SW on Ignition SW and SW on Ignition SW, SW and Relay on (Connect the Relay) and SW off (or Disconnect SW ) (d) Disconnect and reconnect the connectors while watching the test light. The short lies between the connector where the test light stays lit and the connector where the light goes out. (e) Find the exact location of the short by lightly shaking the problem wire along the body. CUTION: Do not open the cover or the case of the ECU unless absolutely necessary. (If the IC terminals are touched, the IC may be destroyed by static electricity.) DISCONNECTION OF MLE ND FEMLE CONNECTORS To pull apart the connectors, pull on the connector itself, not the wire harness. HINT: Check to see what kind of connector you are disconnecting before pulling apart.

12 TROULESHOOTING HOW TO REPLCEMENT FOR TERMINL (with Terminal Retainer Type). DISCONNECT CONNECTOR. DISCONNECT TERMINL FROM CONNECTOR (a) for type Raise the terminal retainer up to the temporally lock position. HINT: The needle insertion position varies according to the connector s shape (number of terminals etc.), so check the position before inserting it. for type Open the terminal retainer. (b) Release the locking lug from terminal and pull the terminal out from rear.. INSTLL TERMINL TO CONNECTOR (a) Insert the terminal. HINT:. Make sure the terminal is positioned correctly.. Insert the terminal until the locking lug locks firmly.. Insert the terminal with terminal retainer in the temporally lock position. (b) Push the terminal retainer in as the full lock position.. CONNECT CONNECTOR

13 REVITIONS REVITIONS The following abbreviations are used in this manual. /C = ir Conditioner S = nti Lock rake System COM. = Combination ECU = Electronic Control Unit EFI = Electronic Fuel Injection EGR = Exhaust Gas Recirculation EX. = Except FL = Fusible Link ISC = Idle Speed Control J/ = Junction lock LH = Left-Hand M/T = Manual Transmission R/ = Relay lock RH = Right Hand SRS = Supplemental Restraint System SW = Switch TEMP. = Temperature VSV = Vacuum Switching Valve W/ = With W/O = Without

14 GLOSSRY OF TERMS ND SYMOLS TTERY Stores chemical energy and converts it into electrical energy. Provides DC current for the auto s various electrical circuits. HEDLIGHTS. SINGLE FILMENT Current flow causes a headlight filament to heat up and emit light. headlight may have either a single () filament or a double () filament. CPCITOR (Condenser) small holding unit for temporary storage of electrical voltage.. DOULE FILMENT CIGRETTE LIGHTER n electric resistance heating element. HORN n electric device which sounds a loud audible signal. CIRCUIT REKER asically a reusable fuse, a circuit breaker will heat and open if too much current flows through it. Some units automatically reset when cool, others must be manually reset. DIODE semiconductor which allows current flow in only one direction. IGNITION COIL Converts low voltage DC current into high voltage ignition current for firing the spark plugs. DIODE, ZENER diode which allows current flow in one direction but blocks reverse flow only up to a specific voltage. bove that potential, it passes the excess voltage. This acts as a simple voltage regulator. LIGHT Current flow through a filament causes the filament to heat up and emit light. DISTRIUTOR, II Channels high voltage current from the ignition coil to the individual spark plugs. LED (LIGHT EMITTING DIODE) Upon current flow, these diodes emit light without producing the heat of a comparable light. FUSE thin metal strip which burns through when too much current flows through it, thereby stopping current flow and protecting a circuit from damage. METER, NLOG Current flow activates a magnetic coil which causes a needle to move, thereby providing a relative display against a background calibration. FUSILE LINK heavy gauge wire placed in high amperage circuits which burns through on overloads, thereby protecting the circuit. FUEL METER, DIGITL Current flow activates one or many LED s, LCD s, or fluorescent displays, which provide a relative or digital display. GROUND The point at which wiring attaches to the ody, thereby providing a return path for an electrical circuit; without a ground, current cannot flow. M MOTOR power unit which converts electrical energy into mechanical energy, especially rotary motion.

15 RELY. NORMLLY CLOSED. NORMLLY OPEN asically, an electrically operated switch which may be normally closed () or open (). Current flow through a small coil creates a magnetic field which either opens or closes an attached switch. RELY, DOULE THROW relay which passes current through one set of contacts or the other. RESISTOR n electrical component with a fixed resistance, placed in a circuit to reduce voltage to a specific value. SPEKER n electromechanical device which creates sound waves from current flow. SWITCH, MNUL. NORMLLY OPEN. NORMLLY CLOSED Opens and closes circuits, thereby stopping () or allowing () current flow. SWITCH, DOULE THROW switch which continuously passes current through one set of contacts or the other. RESISTOR, TPPED resistor which supplies two or more different non adjustable resistance values. RESISTOR, VRILE or RHEOSTT controllable resistor with a variable rate of resistance. lso called a potentiometer or rheostat. SENSOR (Thermistor) resistor which varies its resistance with temperature. SWITCH, IGNITION key operated switch with several positions which allow various circuits. Particularly the primary ignition circuit, to become operational. SWITCH, WIPER PRK utomatically returns wipers to the stop position when the wiper switch is turned off. SENSOR, NLOG SPEED Uses magnetic impulses to open and close a switch to create a signal for activation of other components. TRNSISTOR solidstate device typically used as an electronic relay; stops or passes current depending on the applied voltage at base. SHORT PIN Used to provide an unbroken connection within a junction block. SOLENOID n electromagnetic coil which forms a magnetic field when current flows, to move a plunger, etc. WIRES () NOT CONNECTED () SPLICED Wires are always drawn as straight lines on wiring diagrams. Crossed wired () without a black dot at the junction are not joined; crossed wires () with a black dot or octagonal ( ) mark at the junction are spliced (joined) connections. 5

16 RELY LOCTIONS [Engine Compartment] [ody] 6

17 [Instrument Panel] 7

18 RELY LOCTIONS,,,,,, : J/ No. Left Kick Panel (See Page 7) 8

19 [J/ No. Inner Circuit] 9

20 RELY LOCTIONS,,,,,, : J/ No. Near the attery (See Page 6) 0

21 [J/ No. Inner Circuit]

22 RELY LOCTIONS,,,,,, : J/ No. ehind Combination Meter (See Page 7) [J/ No. Inner Circuit]

23 : R/ No. Left Kick Panel (See Page 7) : R/ No. Right Kick Panel (See Page 7)

24 : R/ No. Right Kick Panel (See Page 7) RELY LOCTIONS 5 : R/ No. 5 Engine Compartment Front Right (See Page 6)

25 Position of Parts in Engine Compartment ELECTRICL WIRING ROUTING /C mbient Temp. Sensor F Fog Light LH N Noise Filter (for Ignition System) /C Condenser Fan Motor F Fog Light RH /C Idle Up VSV F Front irbag Sensor LH O Oil Pressure SW /C Magnet Clutch and F Front irbag Sensor RH O Oxygen Sensor Compressor Sensor F 5 Front Side Marker Light LH 5 /C Pressure SW F 6 Front Side Marker Light RH R Radiator Fan Motor 6 /C Water Temp. SW F 7 Front Turn Signal Light and R Retract Motor LH 7 S ctuator Clearance Light LH R Retract Motor RH 8 S ctuator F 8 Front Turn Signal Light and 9 S Check Connector Clearance Light RH S Speed Sensor (for Cruise Control 0 S Check Connector F 9 Front Wiper Motor System) S Relay F 0 Fuel Pump Resistor S Start Injector Time SW S Relay F Fusible Link ox S Starter S Speed Sensor Front LH S Starter S Speed Sensor Front RH H Headlight LH 5 ir Flow Meter H Headlight RH T Throttle Position Sensor 6 lternator H Horn T Turbo Charging Pressure Sensor 7 lternator H Horn V VSV (for EGR System) ack Up Light SW I ISC Valve V VSV (for Turbo Charging rake Fluid Level SW I Igniter Pressure) I Ignition Coil V VSV (for T VIS) C Check Connector I Injector No. C Cold Start Injector I 5 Injector No. W Washer Motor C Cruise Control ctuator I 6 Injector No. W Water Temp. Sender I 7 Injector No. W Water Temp. SW (for Fans D Distributor control) K Knock Sensor E EFI Resistor E EFI Water Temp. Sensor E EGR Gas Temp. Sensor (for California) 5

26 ELECTRICL WIRING ROUTING Position of Parts in Instrument Panel 8 9 /C mplifier /C Control ssembly C C 8 9 Clock Clutch Start SW J J Junction Connector Junction Connector 0 /C Control ssembly /C Control ssembly C C 0 Combination Meter Combination Meter J J Junction Connector Junction Connector /C Power Transistor /C Room Temp. Sensor C C Combination Meter Combination SW J J 5 6 Junction Connector Junction Connector (for Earth) 5 /C Solar Sensor /C System mplifier C C 5 Combination SW Cruise Control Clutch SW N Noise Filter (for Defogger 6 7 /C Thermistor /C Water Temp. Sensor C C 6 7 Cruise Control ECU Cruise Control ECU System) 8 9 irbag Squib ir Mix Control Servo Motor D Defogger SW P Parking rake SW 0 ir Vent Mode Control Servo Motor D Diode (for Cruise Control System) R RECIRC/FRESH Control Servo Motor shtray uto /C mplifier D D 5 Diode (for Key Off) Door Lock ECU R 5 Radio and Player (w/ CD Player) uto /C mplifier uto /C mplifier E Engine ECU R R 6 7 Radio and Player (w/o CD Player) Radio and Player (w/o CD Player) 5 6 uto Tilt way ctuator uto Tilt way ECU E E 5 6 Engine ECU Engine ECU R R 8 9 Remote Control Mirror SW Retract Control Relay lower Control Relay F Fog Light SW R 0 Retract Control Relay (for CND) 5 lower Motor lower Resistor F F Front Speaker LH Front Speaker RH R Rheostat C Center irbag Sensor ssembly G Glove ox Light S 5 Stereo Component mplifier (w/ CD Player) C C 5 6 Cigarette Lighter Cigarette Lighter Illumination G Glove ox Light SW S 6 Stereo Component mplifier (w/ CD Player) C 7 Circuit Opening Relay H 5 Hazard SW S 7 Stop Light and Cruise Control Stop SW I I 8 9 Ignition Key Cylinder Light Ignition SW and Unlock T Turn Signal Flasher Warning SW 6

27 Position of Parts in ody 7 8 S Deceleration Sensor S ECU I 0 Interior Light 9 0 S ECU S Speed Sensor Rear LH L L License Plate Light Luggage Compartment Light S Speed Sensor Rear RH uto ntenna Control Relay and Motor P Power Seat Motor (for Lumber Support) 6 ack Door Courtesy SW P P Power Seat Motor (for Side Support) Power Seat SW 7 8 uckle SW (w/ Power Seat) uckle SW (w/o Power Seat) P P 5 6 Power Window Master SW Power Window Motor LH D 6 Diode (for Interior Light System) P P 7 8 Power Window Motor RH Power Window SW RH D D 7 8 Door Courtesy Light LH Door Courtesy Light RH R Rear Combination Light LH D D 9 0 Door Courtesy SW LH Door Courtesy SW RH R R Rear Combination Light RH Rear Speaker LH D D Door Lock Control SW LH Door Lock Control SW RH R R 5 6 Rear Speaker LH Rear Speaker RH D Door Lock Motor LH and, Key Lock and Unlock SW LH R R 7 8 Rear Speaker RH Rear Tweeter (Speaker) LH D Door Lock Motor RH and, Key Lock and Unlock SW RH R R 9 0 Rear Tweeter (Speaker) RH Rear Window Defogger (+, w/o Diversity ntenna) D D 5 6 Door Speaker LH Door Speaker RH R R Rear Window Defogger (+, w/ Diversity ntenna) Rear Window Defogger ( ) F 5 Front Tweeter (Speaker) LH R R Rear Wiper Control Relay and Motor Remote Control Mirror LH F F 6 7 Front Tweeter (Speaker) RH Fuel Pump R 5 Remote Control Mirror RH F 8 Fuel Sender S S 8 9 Sun Roof Control Relay Sun Roof Control SW and Personal Light H 6 High Mount Stop Light S S 0 Sun Roof Limit SW Sun Roof Motor 7

28 ELECTRICL WIRING ROUTING : Location of Connector Joining Wire Harness and Wire Harness : Location of Ground Points : Location of Splice Points 8

29 Connector Joining Wire Harness and Wire Harness CODE JOINING WIRE HRNESS ND WIRE HRNESS (CONNECTOR LOCTION) E COWL WIRE ND ENGINE ROOM MIN WIRE (FRONT SIDE OF RIGHT FRONT FENDER) E E ENGINE WIRE ND COWL WIRE (RER SIDE OF RIGHT FRONT FENDER) ES ENGINE WIRE ND ENGINE ROOM NO. WIRE (NER THE DISTRIUTOR) ET ENGINE ROOM MIN WIRE ND ENGINE WIRE (NER THE J/ NO. ) 9

30 ELECTRICL WIRING ROUTING : Location of Connector Joining Wire Harness and Wire Harness : Location of Ground Points 0

31 Connector Joining Wire Harness and Wire Harness CODE IC IC ID IE IE IF IF IG IG IH JOINING WIRE HRNESS ND WIRE HRNESS (CONNECTOR LOCTION) FRONT DOOR LH WIRE ND COWL WIRE (LEFT KICK PNEL) ENGINE ROOM MIN WIRE ND FLOOR WIRE (LEFT KICK PNEL) ENGINE ROOM MIN WIRE ND COWL WIRE (LEFT KICK PNEL) FLOOR WIRE ND COWL WIRE (LEFT KICK PNEL) ENGINE WIRE ND COWL WIRE (UNDER THE ENGINE ECU) ENGINE WIRE ND /C NO. WIRE (EHIND THE GLOVE OX)

32 ELECTRICL WIRING ROUTING : Location of Connector Joining Wire Harness and Wire Harness : Location of Ground Points : Location of Splice Points

33 Connector Joining Wire Harness and Wire Harness CODE II II II IJ IJ IK IK IQ IQ IQ JOINING WIRE HRNESS ND WIRE HRNESS (CONNECTOR LOCTION) COWL WIRE ND CONSOLE OX WIRE (INSTRUMENT PNEL CENTER) COWL WIRE ND CONSOLE OX WIRE (RIGHT KICK PNEL) COWL WIRE ND /C NO. WIRE (EHIND THE GLOVE OX) FRONT DOOR RH WIRE ND COWL WIRE (RIGHT KICK PNEL) COWL WIRE ND /C NO. WIRE (ESIDE HETER UNIT)

34 ELECTRICL WIRING ROUTING : Location of Connector Joining Wire Harness and Wire Harness : Location of Ground Points : Location of Splice Points

35 Connector Joining Wire Harness and Wire Harness CODE L M N O P JOINING WIRE HRNESS ND WIRE HRNESS (CONNECTOR LOCTION) FLOOR WIRE ND FRME WIRE (LEFT SIDE OF FRONT FLOOR PNEL) FRME WIRE ND SET WIRE (UNDER THE DRIVER S SET) CK DOOR NO. WIRE ND FLOOR WIRE (LET SIDE OF PCKGE TRY TRIM) CK DOOR NO. WIRE ND CK DOOR NO. SU WIRE (CK DOOR UPPER LEFT) FLOOR WIRE ND LUGGGE ROOM WIRE (LEFT QURTER PNEL CENTER) 5

36 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 reaker, Fuse, etc.) and other parts. The next page and following pages show the parts to which each electrical source outputs current. 60 FL S S Relay 0 FL M Ignition SW (M) attery FL MIN.0L lternator () 00 FL LT 0 FL M 5 STOP 0 RTR 5 EFI 5 ECU 0 DEFOGGER 5 HZ HORN 0 DOME Engine Main Relay (Point Side) 0 FOG Starter 0 HETER Taillight Relay Headlight Relay Light Control SW Dimmer SW Retract Control Relay 5 HED LH 5 HED RH [LOCTION] () : J/ No. (See page 8 ) () : J/ No. (See page 0 9) () : R/ No. (See page ) 6

37 S ctuator 7.5 IGN Engine Main Relay (Coil Side) EFI Resistor Injector No. Igniter Injector No. Ignition Coil Injector No. Noise Filter Injector No. 0 POWER Ignition SW (M) lternator (s) 0 TURN 5 CIG & RDIO 5 ECU IG 5 GUGE 0 WIPER Engine ECU Circuit Opening Relay Starter 0 FL RDI FN 0 FL CDS FN Starter Relay Cold Start Injector Heater Relay 0 /C Start Injector Time SW 5 TIL Combination Meter (US) (CND) Retract Control Relay Light Control SW Clutch Start SW () : R/ No. (See page 0) (7) : Fusible Link ox (F See page 5 ) 7

38 POWER SOURCE (Current Flow Chart) Page Nos. of Related Systems Location Parts Code or Location C or Fuse /C Condenser Fan Motor /C Idle Up VSV /C Magnet Clutch and Compressor Sensor /C Pressure SW S ctuator S Relay lternator /C mplifier (uto /C) /C mplifier (Manual /C) /C Control ssembly (uto /C) /C Control ssembly (Manual /C) /C Power Transistor /C System mplifier ir Vent Mode Control Servo Motor shtray Illumination uto /C mplifier uto Tilt way ECU S Deceleration Sensor S ECU DEFOGGER WIPER GUGE 7.5 IGN ECU TURN CIG & RDIO TIL ECU IG STOP HED LH HED RH RTR EFI DOME HZ HORN FL RDI FN FL CDS FN POWER FOG /C HETER [LOCTION] () : J/ No. (See page 8 ) () : J/ No. (See page 0 ) () R/ No. (See page ) 8

39 uto ntenna Control Relay and Motor ack Up Light SW lower Control Relay lower Motor lower Resistor ack Door Courtesy SW Check Connector Center irbag Sensor ssembly Cigarette Lighter Cigarette Lighter Illumination Circuit Opening Relay Clock irbag Warning Light [Comb. Meter] S Warning Light [Comb. Meter] Check Engine Warning Light [Comb. Meter] Combination Meter Cruise Control Indicator Light [Comb. Meter] High eam Indicator Light [Comb. Meter] Seat elt Warning Light [Comb. Meter] Turn Signal Indicator Light [Comb. Meter] Charge Warning Light [Comb. Meter] Combination Meter (Illumination) Door Warning Light [Comb. Meter] Dimmer SW [Comb. SW] Horn SW [Comb. SW] Turn Signal SW [Comb. SW] Front Wiper and Washer SW [Comb. SW] Rear Wiper and Washer SW [Comb. SW] Cruise Control ECU 5 6 C C C5 C6 C7 C8 C0 C C C C C6 () : R/ No. (See page ) 9

40 POWER SOURCE (Current Flow Chart) Page Nos. of Related Systems Location Parts Code or Location C or Fuse Cruise Control ECU Defogger SW Diode (for Key Off) Door Lock ECU Diode (for Interior System) Door Courtesy Light LH Door Courtesy Light RH Door Courtesy SW LH Door Courtesy SW RH Door Lock Motor LH Door Lock Motor RH C7 D D D5 D6 D7 D8 D9 D0 D D E5 E6 F F F5 F6 F7 F8 F9 F0 F Engine ECU Fog Light LH Fog Light RH Front Side Marker Light LH Front Side Marker Light RH Front Turn Signal Light and Clearance Light LH Front Turn Signal Light and Clearance Light RH Front Wiper Motor Fuel Pump Resistor Fog Light SW DEFOGGER WIPER GUGE 7.5 IGN ECU TURN CIG & RDIO TIL ECU IG STOP HED LH HED RH RTR EFI DOME HZ HORN FL RDI FN FL CDS FN POWER FOG /C HETER [LOCTION] () : J/ No. (See page 8 ) () : J/ No. (See page 0 ) () R/ No. (See page ) 0

41 Fuel Pump Glove ox Light Glove ox Light SW Headlight LH Headlight RH Horn LH Horn RH Hazard SW High Mount Stop Light ISC Valve Ignition Key Cylinder Light Interior Light Junction Connector Licence Plate Light Luggage Compartment Light Noise Filter (for Defogger) Oxygen Sensor Power Seat Motor (for Lumbar Support) Power Seat Motor (for Side Support) Power Seat SW Power Window Master SW Power Window Motor LH Power Window Motor RH F7 G G H H H H H5 H6 I I8 I0 J J J J J5 L L N O P P P P5 P6 P7 () : R/ No. (See page )

42 POWER SOURCE (Current Flow Chart) Page Nos. of Related Systems Location Parts Code or Location C or Fuse Power Window SW RH P8 Radiator Fan Motor Retract Motor LH R R R R Retract Motor RH RECIRC/FRESH Control Servo Motor Radio and Player (w/ CD Player) Radio and Player (w/o CD Player) Remote Control Mirror SW Retract Control Relay Retract Control Relay (for CND) Rheostat ack Up Light LH [Rear Comb. Light LH] Rear Turn Signal Light LH [Rear Comb. Light LH] Stop Light LH [Rear Comb. Light LH] Tail and Rear Side Marker Light LH [Rear Comb. Light LH] ack Up Light RH [Rear Comb. Light RH] Rear Turn Signal Light RH [Rear Comb. Light RH] Stop Light RH [Rear Comb. Light RH] Tail and Rear Side Marker Light RH [Rear Comb. Light RH] R5 R6 R8 R9 R0 R R R R0 R R Rear Window Defogger Rear Wiper Control Relay and Motor DEFOGGER WIPER GUGE 7.5 IGN ECU TURN CIG & RDIO TIL ECU IG STOP HED LH HED RH RTR EFI DOME HZ HORN FL RDI FN FL CDS FN POWER FOG /C HETER [LOCTION] () : J/ No. (See page 8 ) () : J/ No. (See page 0 ) (6) R/ No. (See page )

43 Remote Control Mirror LH Remote Control Mirror RH Speed Sensor (for Cruise Control System) Stereo Component mplifier (w/ CD Player) Stop Light SW Sun Roof Control Relay Sun Roof Control SW and Personal Light Sun Roof Limit SW Sun Roof Motor Turn Signal Flasher VSV (for EGR System) VSV (for Turbo Charging Pressure) VSV (for T VIS) Washer Motor Water Temp. SW (for Fans Control) Defogger Relay Diode Integration Relay EFI Main Relay Radiator Fan Relay No. Power Main Relay Heater Relay Fog Light Relay /C Condenser Fan Relay No. /C Condenser Fan Relay No. /C Magnet Clutch Relay Fuel Pump Control Relay Horn Relay R R5 S S5 S6 S7 S8 S9 S0 S T V V V W W () : R/ No. (See page ) (6) : R/ No. (See page ) (7) R/ No. 5 (See page )

44 POWER SOURCE TTERY W FL MIN. 0L 60 FL S 0 FL M 0 FL M 00 FL LT F, F FUSILE LINK OX C ENGINE MIN RELY W 8 E W W W W L R W W W E7 E7 0 FL RDI FN TO S RELY 0 FL CDS FN TILLIGHT RELY 6 E 5 E ET 5 TIL 5 STOP R W 5 ECU O 7 IE 0 IE E I 0 DEFOGGER 0 RTR W E0 W 0 FOG G R 5 EFI W 0 HETER 0 DOME 5 HZ HORN W L 0 POWER R I W W L HEDLIGHT RELY D W W I9 IGNITION SW 6 5 CIG & RDIO 5 ECU IG 0 TURN 6 D 5 HED (LH) M CC IG GR L R 7 0 WIPER 5 GUGE 5 HED (RH) 0 M IG 9 O IGN 7 H E 6

45 TILLIGHT RELY : CLOSED WITH LIGHT CONTROL SW T TIL OR HED POSITION ENGINE MIN RELY 5 : CLOSED WITH IGNITION SW T ON OR ST POSITION HEDLIGHT RELY 5 : CLOSED WITH LIGHT CONTROL SW T HED POSITION OR DIMMER SW T FLSH POSITION I 9 IGNITION SW : CLOSED WITH IGNITION KEY T CC OR ON POSITION 9 0 : CLOSED WITH IGNITION KEY T ON OR ST POSITION : PRTS LOCTION CODE SEE PGE CODE SEE PGE CODE SEE PGE F 5 F 5 I 9 6 : RELY LOCKS CODE SEE PGE RELY LOCKS (RELY LOCK LOCTION) R/ NO. (LEFT KICK PNEL) R/ NO. (RIGHT KICK PNEL) : JUNCTION LOCK ND WIRE HRNESS CONNECTOR CODE SEE PGE JUNCTION LOCK ND WIRE HRNESS (CONNECTOR LOCTION) 8 COWL WIRE ND J/ NO. (LEFT KICK PNEL) H I 8 ENGINE ROOM MIN WIRE ND J/ NO. (LEFT KICK PNEL) 0 ENGINE ROOM MIN WIRE ND J/ NO. (NER THE TTERY) C D E SERVICE HINTS 0 ENGINE WIRE ND J/ NO. (NER THE TTERY) 0 ENGINE ROOM MIN WIRE ND J/ NO. (NER THE TTERY) : CONNECTOR JOINING WIRE HRNESS ND WIRE HRNESS CODE SEE PGE JOINING WIRE HRNESS ND WIRE HRNESS (CONNECTOR LOCTION) E 8 ENGINE WIRE ND COWL WIRE (RER SIDE OF RIGHT FRONT FENDER) ET 8 ENGINE ROOM MIN WIRE ND ENGINE WIRE (NER THE J/ NO. ) IE 0 ENGINE ROOM MIN WIRE ND COWL WIRE (LEFT KICK PNEL) : GROUND POINTS CODE SEE PGE GROUND POINTS LOCTION E 8 FRONT LEFT FENDER : SPLICE POINTS CODE SEE PGE WIRE HRNESS WITH SPLICE POINTS CODE SEE PGE WIRE HRNESS WITH SPLICE POINTS E 7 8 ENGINE WIRE I COWL WIRE E0 8 COWL WIRE F LCK F LCK I 9 LCK X X X

46 STRTING ND IGNITION 0 M IG 9 O E O M CC IG ST 7 W I8 I9 IGNITION SW W W R W 7 IE 0 IE STRTER RELY R W 6 E 5 E E R W C9 CLUTCH STRT SW E5 ES 7 G 0 FL M 00 FL LT 0 FL M F FUSILE LINK OX C COLD STRT INJECTOR STJ ST S STRT INJECTOR TIME SW FL MIN. 0L G ES TTERY M S,S STRTER IG 8

47 O O O E7 E9 O O C CHECK CONNECTOR I IGNITION COIL 8 IG W L W L W L E9 O 5 N NOISE FILTER (FOR IGNITION) D DISTRIUTOR G G NE G + + IGT IGF TC I IGNITIOR 5 C 5 R (SELED) I7 L Y R W Y G G NE G IGT IGF E,E5 ENGINE ECU TO TCHOMETER E EC 9

48 STRTING ND IGNITION STRTER POINTS CLOSED WITH CLUTCH STRT SW ON ND IGNITION SW T ST POSITION STRTER RELY () () : CLOSED WITH CLUTCH STRT SW ON ND IGNITION SW T ST POSITION C COLD STRT INJECTOR : PPROX. VOLTS WHILE STRT INJECTOR TIME SW IS CLOSED ND STRTER CRNKING C 9 CLUTCH STRT SW : CLOSED WITH CLUTCH PEDL FULLY DEPRESSED I 9 IGNITION SW 7 : CLOSED WITH IGNITION SW T ST POSITION 9 0 : CLOSED WITH IGNITION SW T ON OR ST POSITION : PRTS LOCTION CODE SEE PGE CODE SEE PGE CODE SEE PGE C 5 E 5 6 N 5 C 5 F 5 S 5 C 9 6 I 5 S 5 D 5 I 5 S 5 E 6 I 9 6 : RELY LOCKS CODE SEE PGE RELY LOCKS (RELY LOCK LOCTION) R/ NO. (RIGHT KICK PNEL) : JUNCTION LOCK ND WIRE HRNESS CONNECTOR CODE SEE PGE JUNCTION LOCK ND WIRE HRNESS (CONNECTOR LOCTION) 0 ENGINE ROOM MIN WIRE ND J/ NO. (NER THE TTERY) C 0 ENGINE WIRE ND J/ NO. (NER THE TTERY) E 0 ENGINE ROOM MIN WIRE ND J/ NO. (NER THE TTERY) : CONNECTOR JOINING WIRE HRNESS ND WIRE HRNESS CODE SEE PGE JOINING WIRE HRNESS ND WIRE HRNESS (CONNECTOR LOCTION) E 8 ENGINE WIRE ND COWL WIRE (RER SIDE OF RIGHT FRONT FENDER) ES 8 ENGINE WIRE ND ENGINE ROOM NO. WIRE (NER THE DISTRIUTOR) IE 0 ENGINE ROOM MIN WIRE ND COWL WIRE (LEFT KICK PNEL) : GROUND POINTS CODE SEE PGE GROUND POINTS LOCTION E 8 FRONT LEFT FENDER EC 8 INTKE MNIFOLD IG 0 R/ NO. SET OLT : SPLICE POINTS CODE SEE PGE WIRE HRNESS WITH SPLICE POINTS CODE SEE PGE WIRE HRNESS WITH SPLICE POINTS E 5 I 7 ENGINE WIRE E 7 8 ENGINE WIRE I 8 COWL WIRE E 9 SERVICE HINTS 50

49 5

50 CHRGING W W FROM POWER SOURCE SYSTEM (SEE PGE 6) FROM POWER SOURCE SYSTEM (SEE PGE 6) IGN 5 ECU IG 5 D 8 W W C CHRGE WRNING LIGHT [COM. METER] O 9 8 Y Y R R R 6 IG 5 IG C C J JUNCTION CONNECTOR Y W W 6, 7 LTERNTOR IG L S 0 FL M 00 FL LT F FUSILE LINK OX IC REGULTOR FL MIN. 0L TTERY 5

51 SERVICE HINTS 7() LTERNTOR () GROUND:.9 5. VOLTS WITH ENGINE RUNNING T 000 RPM ND 5 C (77 F).5. VOLTS WITH ENGINE RUNNING T 000 RPM ND 5 C (9 F) () GROUND: 0 VOLTS WITH IGNITION SW T ON POSITION ND ENGINE NOT RUNNING : PRTS LOCTION CODE SEE PGE CODE SEE PGE CODE SEE PGE 6 5 C 6 J F 5 : JUNCTION LOCK ND WIRE HRNESS CONNECTOR CODE SEE PGE JUNCTION LOCK ND WIRE HRNESS (CONNECTOR LOCTION) D 8 COWL WIRE ND J/ NO. (LEFT KICK PNEL) 0 ENGINE WIRE ND J/ NO. (NER THE TTERY) : CONNECTOR JOINING WIRE HRNESS ND WIRE HRNESS CODE SEE PGE JOINING WIRE HRNESS ND WIRE HRNESS (CONNECTOR LOCTION) IG 0 ENGINE WIRE ND COWL WIRE (UNDER THE ENGINE ECU)) 6 7 LCK C GRY F LCK X 8 9 J C C C C C C (HINT : SEE PGE 7) 5

52 ENGINE CONTROL THE ENGINE CONTROL SYSTEM UTILIZES MICROCOMPUTER ND MINTINS OVERLL CONTROL OF THE ENGINE N OUTLINE OF ENGINE CONTROL IS GIVEN HERE.. INPUT SIGNLS () WTER TEMP. SIGNL SYSTEM THE WTER TEMP. SENSOR DETECTS THE ENGINE COOLNT TEMP. ND HS UILT IN THERMISTOR WITH RESISTNCE WHICH VRIES CCORDING TO THE WTER TEMP. THUS THE WTER TEMP. IS INPUT IN THE FORM OF CONTROL SIGNL TO TERMINL THW OF THE ECU. () INTKE IR TEMP. SIGNL SYSTEM THE INTKE IR TEMP. SENSOR IS INSTLLED INSIDE THE IR FLOW METER ND DETECTS THE INTKE IR TEMP. WHICH IS INPUT S CONTROL SIGNL TO TERMINL TH OF THE ECU. () OXYGEN SENSOR SIGNL SYSTEM THE OXYGEN DENSITY IN THE EXHUST EMISSIONS IS DETECTED ND INPUT S CONTROL SIGNL TO TERMINL OX OF THE ECU. TO MINTIN STLE DETECTION PERFORMNCE Y THE OXYGEN SENSOR, HETER IS USED FOR WRMING THE SENSOR. THE HETER IS LSO CONTROLLED Y THE ECU (HT). () RPM SIGNL SYSTEM CRNKSHFT POSITION IS DETECTED Y THE PICK UP COIL INSTLLED INSIDE THE DISTRIUTOR. CRNKSHFT POSITION IS INPUT S CONTROL SIGNL TO TERMINLS G ND G OF THE ECU, ND RPM IS INPUT TO TERMINL NE. (5) THROTTLE SIGNL SYSTEM THE THROTTLE POSITION SENSOR DETECTS THE THROTTLE VLVE OPENING NGLE WHICH IS INPUT S CONTROL SIGNL TO TERMINL VT OF THE ECU, OR WHEN THE VLVE IS FULLY CLOSED, TO TERMINL IDL. (6) VEHICLE SPEED SIGNL SYSTEM THE SPEED SENSOR, INSTLLED INSIDE THE COMINTION METER, DETECTS THE VEHICLE SPEED ND INPUTS CONTROL SIGNL TO TERMINL SPD OF THE ECU. (7) /C SW SIGNL SYSTEM THE OPERTING VOLTGE OF THE /C MGNET CLUTCH IS DETECTED ND INPUT IN THE FORM OF CONTROL SIGNL TO TERMINL /C OF THE ECU. (8) TTERY SIGNL SYSTEM VOLTGE IS CONSTNTLY PPLIED TO TERMINL TT OF THE ECU. WHEN THE IGNITION SW IS TURNED TO ON, VOLTGE FOR ECU OPERTION IS PPLIED VI THE EFI MIN RELY TO TERMINLS + ND OF THE ECU. (9) INTKE IR VOLUME SIGNL SYSTEM INTKE IR VOLUME IS DETECTED Y THE POTENTIOMETER INSTLLED INSIDE THE IR FLOW METER ND IS INPUT S CONTROL SIGNL TO TERMINL VS OF THE ECU. (0) STOP LIGHT SW SIGNL SYSTEM THE STOP LIGHT SW IS USED TO DETECT WHETHER OR NOT THE VEHICLE IS RKING ND THE INFORMTION IS INPUT S CONTROL SIGNL TO TERMINL STP OF THE ECU. () ST SIGNL SYSTEM TO CONFIRM THT THE ENGINE IS CRNKING, THE VOLTGE PPLIED TO THE STRTER MOTOR DURING CRNKING IS DETECTED ND IS INPUT S CONTROL SIGNL TO TERMINL ST OF THE ECU. () ENGINE KNOCK CONTROL SYSTEM ENGINE KNOCKING IS DETECTED Y THE KNOCK SENSOR ND INPUT S CONTROL SIGNL TO TERMINL KNK OF THE ECU. () ELECTRICL IDLE UP SYSTEM THE SIGNL WHEN SYSTEMS SUCH S THE RER WINDOW DEFOGGER, HEDLIGHTS, ETC. WHICH CUSE HIGH ELECTRICL URDEN RE ON IS INPUT TO TERMINL ELS S CONTROL SIGNL.. CONTROL SYSTEM * EFI (ELECTRONIC FUEL INJECTION) SYSTEM THE EFI SYSTEM MONITORS THE ENGINE REVOLUTIONS THROUGH THE SIGNLS ECH SENSOR (INPUT SIGNLS () TO ()) INPUTS TO THE ECU. SED ON THIS DT ND THE PROGRM MEMORIZED IN THE ECU. THE MOST PPROPRITE FUEL INJECTION TIMING IS DECIDED ND CURRENT IS OUTPUT TO TERMINLS #, #, # ND # OF THE ECU. CUSING THE INJECTORS TO OPERTE (TO INJECT FUEL). IT IS THIS SYSTEM WHICH, THROUGH THE WORK OF THE ECU. FINELY CONTROLS FUEL INJECTION IN RESPONSE TO DRIVING CONDITIONS. * ES (ELECTRONIC SPRK DVNCE) SYSTEM THE ES SYSTEM MONITORS THE ENGINE REVOLUTIONS USING THE SIGNLS (INPUT SIGNLS (,,, 6, 7, 9, )) INPUT TO THE ECU FROM ECH SENSOR. SED ON THIS DT ND THE PROGRM MEMORIZED IN THE ECU. THE MOST PPROPRITE IGNITION TIMING IS DECIDED ND CURRENT IS OUTPUT TO TERMINL IGT OF THE ECU. THIS OUTPUT CONTROLS THE IGNITER TO PRODUCE THE MOST PPROPRITE IGNITION TIMING FOR THE DRIVING CONDITIONS. * FUEL PUMP CONTROL SYSTEM COMPUTER OPERTION OUTPUTS TO TERMINL FPR ND CONTROLS THE FUEL PUMP CONTROL RELY ND THUS CONTROLS THE FUEL PUMP DRIVE SPEED IN RESPONSE TO CONDITIONS. 5 SYSTEM OUTLINE

53 * OXYGEN SENSOR HETER CONTROL SYSTEM THE OXYGEN SENSOR HETER CONTROL SYSTEM TURNS THE HETER TO ON WHEN THE INTKE IR VOLUME IS LOW (TEMP. OF EXHUST EMISSIONS LOW). ND WRMS UP THE OXYGEN SENSOR TO IMPROVE DETECTION PERFORMNCE OF THE SENSOR. THE ECU EVLUTES THE SIGNLS FROM ECH SENSOR (INPUT SIGNLS (, 6, 8, 9, )), CURRENT IS OUTPUT TO TERMINL HT ND CONTROLS THE HETER. * ISC (IDLE SPEED CONTROL) SYSTEM THE ISC SYSTEM (ROTRY SOLENOID TYPE) INCRESES THE RPM ND PROVIDES IDLING STILITY FOR FST IDLE UP WHEN THE ENGINE IS COLD ND WHEN THE IDLE SPEED HS DROPPED DUE TO ELECTRICL LOD, ETC. THE ECU EVLUTES THE SIGNLS FROM ECH SENSOR (INPUT SIGNLS (, TO 8,, )), OUTPUTS CURRENT TO TERMINLS RSC ND RSO ND CONTROLS THE ISC VLVE. * EGR CONTROL SYSTEM WITH THE EGR CONTROL SYSTEM, THE ECU EVLUTES THE (INPUT SIGNLS (,, 0)), FROM ECH SENSOR, CURRENT IS OUTPUT TO TERMINL EGR ND OPERTION OF THE EGR VLVE IS CONTROLLED. * INTKE IR CONTROL SYSTEM IN THE INTKE IR CONTROL SYSTEM, ECH CYLINDER IN THE INTKE MNIFOLD IS DIVIDED INTO TWO PRTS, WITH N INTKE IR CONTROL VLVE INSTLLED IN THE PSSGE ON ONE SIDE. THE OPENING ND CLOSING OF THE VLVE PROVIDES THE MOST PPROPRITE INTKE IR FLOW ND, S WELL S PREVENTING PERFORMNCE LOSS T LOW SPEEDS, LSO IMPROVES FUEL ECONOMY. THE ECU EVLUTES THE SIGNLS FROM ECH SENSOR (INPUT SIGNLS (,, 5)), OUTPUTS CURRENT TO TERMINL T VIS CONTROLS THE VSV (FOR T VIS) ND, CRRIES OUT OPENING ND CLOSING OF THE VLVE.. DIGNOSIS SYSTEM WITH THE DIGNOSIS SYSTEM, WHEN THERE IS MLFUNCTION IN THE ECU SIGNL SYSTEM, THE MLFUNCTIONING SYSTEM IS RECORDED IN THE MEMORY. THE MLFUNCTIONING SYSTEM CN THEN E FOUND Y REDING THE DISPLY (CODE) OF THE CHECK ENGINE WRNING LIGHT.. FIL SFE SYSTEM WHEN MLFUNCTION OCCURS IN NY SYSTEM, IF THERE IS POSSIILITY OF ENGINE TROULE EING CUSED Y CONTINUED CONTROL SED ON THE SIGNLS FROM THT SYSTEM. THE FIL SFE SYSTEM EITHER CONTROLS THE SYSTEM Y USING DT (STNDRD VLUES) RECORDED IN THE ECU MEMORY OR ELSE STOPS THE ENGINE. 55

54 ENGINE CONTROL O W M ST 7 W I8 Y 0 M IG 9 W 0 IE 7 IE E W R R 5 E 6 E I9 IGNITION SW E7 E EFI RESISTOR 0 E W W O O O TO CLUTCH STRT SW IG STRTER RELY C7 CIRCUIT OPENING RELY I6 Y 6 8 L O L O IE F0 FUEL PUMP RESISTOR 9 L W L L E IE L FUEL PUMP CONTROL RELY 0 G R IE 5 L G R W R 7 0 FL M 00 FL LT 0 FL M I INJECTOR NO. F FUSILE LINK OX O R I5 INJECTOR NO. O G I6 INJECTOR NO. O Y I7 INJECTOR NO. O L J/ NO. E 5 G IG F7 FUEL PUMP 5 L L L I IF P M L FL MIN. 0L G R G L Y G R TTERY L 56

55 O Y O Y L Y FROM POWER SOURCE SYSTEM (SEE PGE 6) 7. 5 IGN 5 EFI 5 STOP 5 TIL 5 GUGE 8 IG L 9 IG L EFI MIN RELY 7 O 8 5 H E 0 Y C C 7 7 P P IG D 5 TT S7 STOP LIGHT SW G W G R C C G W STP J JUNCTION CONNECTOR R Y FROM DEFOGGER SW DIODE 6 O D ELS E,E5 C,E6 ENGINE ECU P E W J/ NO. Y C0, C CHECK ENGINE [COM. METER] Y I6 G R G L Y G R L W LG W G Y + Y + FPR FC # # # # SPD CT /C STJ J JUNCTION CONNECTOR IJ W IG I7 G G R G L Y G R SPEED SENSOR [COM. METER] C R L W 6 5 LG CT 8 /C MPLIFIER J6 JUNCTION CONNECTOR (FOR ERTH) 6 W C D TO /C MGNET CLUTCH RELY G FROM STRT INJECTOR TIME SW G ES TO COLD STRT INJECTOR E ID 57

56 ENGINE CONTROL O E9 O Y I7 Y O Y L L Y Y W L Y Y Y Y E5 Y E7 Y O W L I IGNITION COIL W L TO TCHOMETER E9 Y Y 5 V I V VSV (FOR T VIS) ISC VLVE VSV (FOR EGR SYSTEM) Y Y V VSV (FOR TURO CHRGING PRESSURE) + + TC D I DISTRIUTOR IGNITIOR G G NE G IGT IGF W L O LG G W G G R L R L Y R W (SELED) Y 8 TVIS 9 RSC RSO EGR 6 TPC ST G 6 C G NE 5 G 0 IGT IGF E,E5 C,E6 ENGINE ECU VT C IDL C VC C PIM C THW C E 9 C THG 0 C P P P L R R P L E7 R W 5 ES P P L P P P L P L I7 E9 I7 T TURO CHRGING PRESSURE SENSOR P L VC R W PIM E R W TO OOST METER [COM. METER] R R ES E EFI WTER TEMP. SENSOR E EGR GS TEMP. SENSOR (FOR CLIFORNI) L R L R E SHORT PIN (EX. CLIFORNI) TO CRUISE CONTROL ECU T THROTTLE POSITION SENSOR R P L R R E9 R E7 R R P L R 58

57 Y L Y W L R R W L Y L R Y R 8 8 IG + FP E + E VF TE OX HT C CHECK CONNECTOR 9 6 OX O OXYGEN SENSOR (SELED) V Y O W P W (SELED) I7 8 C VF 5 C T C OX 8 HT 6 C OX R TH C VS C E,E5 C,E6 ENGINE ECU EO 6 EO E KNK 5 C I7 GR GR R W R (SELED) R R (SELED) 7 6 TH VS 5 K IR FLOW KNOCK METER SENSOR 5 E VC R P L I7 R R R R EC 59

58 ENGINE CONTROL SERVICE HINTS EFI MIN RELY : CLOSED WITH IGNITION SW T ON OR ST POSITION E EFI RESISTOR,,, 5 : 5 7 Ω I, I 5, I 6, I 7 INJECTOR : Ω F0 FUEL PUMP RESISTOR : PPROX. 7 Ω 5 IR FLOW METER : CLOSED WITH STRTER RUNNING OR MESURING PLTE OPEN 5 6 : Ω (MESURING PLTE CLOSED) Ω (MESURING PLTE OPEN) 5 : Ω 5 7 : 0 0 K ( 0 C, F) 7 KΩ (0 C, F) KΩ (0 C, 68 F) 0.9. KΩ (0 C, 0 F) KΩ (60 C, 0 F) E EFI WTER TEMP. SENSOR : 0 0 KΩ ( 0 C, F) 7 KΩ (0 C, F) 7 KΩ (0 C, 68 F) 0.9. KΩ (0 C, 0 F) KΩ (60 C, 0 F) KΩ (80 C, 76 F) T THROTTLE POSITION SENSOR : KΩ WITH CLERNCE ETWEEN LEVER ND STOP SCREW 0 MM (0 IN) : LESS THN. KΩ WITH CLERNCE ETWEEN LEVER ND STOP SCREW 0.50 MM (0.00 IN) Ω WITH 0.7 MM (0.08 IN.) :. 0 KΩ WITH THROTTLE VLVE FULLY OPEN : 8 KΩ E, E 5, E 6 ENGINE ECU VOLTGE T ECU CONNECTORS TT E : 0 VOLTS +, + E : 0 VOLTS (IGNITION SW ON) IDL E : 6 VOLTS (IGNITION SW ON ND THROTTLE VLVE OPEN) VT E : 0..0 VOLTS (IGNITION SW ON ND THROTTLE VLVE FULLY CLOSED) 6 VOLTS (IGNITION SW ON ND THROTTLE VLVE OPEN) VC E : 6 VOLTS (IGNITION SW ON) VS E : 6 VOLTS (IGNITION SW ON ND MESURING PLTE FULLY CLOSED).0 VOLTS OR LESS (IGNITION SW ON ND MESURING PLTE FULLY OPEN).0.0 VOLTS (IDLING).0.0 VOLTS (000 RPM) TH E :.0.0 VOLTS (IGNITION SW ON ND INTKE IR TEMP. 0 C, (68 F)) THW E : 0..0 VOLTS (IGNITION SW ON ND COOLNT TEMP. 80 C, (76 F)) ST E : 6 VOLTS (CRNKING) #, #, #, # E0, E0 : 0 VOLTS (IGNITION SW ON) IGT E : VOLTS (CRNKING OR IDLING) TVIS E :.0 VOLTS OR LESS WITH IGNITION SW ON ND THROTTLE VLVE FULLY CLOSED 0 VOLTS WITH IGNITION SW ON ND THROTTLE VLVE OPEN.0 VOLTS OR LESS IDLING 0 VOLTS WITH 00 RPM OR MORE T E : 0 VOLTS WITH IGNITION SW ON ND CHECK CONNECTOR T E NO CONNECT 0.5 VOLTS OR LESS WITH IGNITION SW ON ND CHECK CONNECTOR T E CONNECT /C E : 8 VOLTS WITH IGNITION SW ON /C SWITCH ON RSO, RSC E : 9 VOLTS (IGNITION SW ON) PIM E :.5.5 VOLTS (IGNITION SW ON) W E : 0 VOLTS (NO TROULE (CHECK ENGINE WRNING LIGHT OFF) ND ENGINE RUNNING) RESISTNCE T ECU CONNECTORS (DISCONNECT WIRING CONNECTOR FROM ECU) IDL E : INFINITY (THROTTLE VLVE OPEN) LESS THN 00 Ω (THROTTLE VLVE FULLY CLOSED) VT E : Ω (THROTTLE VLVE OPEN) Ω (THROTTLE VLVE FULLY CLOSED) VS E : Ω (MESURING PLTE FULLY CLOSED) 0 00 Ω (MESURING PLTE FULLY OPEN) TH E : Ω (INTKE IR TEMP. 0 C, 68 F) THW E : Ω (COOLNT TEMP. 80 C, 76 F) G,G G : 0 80 Ω NE G : 80 0 Ω RSC, RSO +, + : Ω 60

59 : PRTS LOCTION CODE SEE PGE CODE SEE PGE CODE SEE PGE 5 5 E 6 6 J F0 5 J 6 6 C 5 F 5 K 5 C 7 6 F7 7 O 5 C0 6 I 5 S 7 6 C 6 I 5 T 5 D 5 I 5 T 5 E 5 I 5 V 5 E 5 I 5 5 V 5 E 5 I 6 5 V 5 E 6 I 7 5 E 5 C 6 I 9 6 : RELY LOCKS CODE SEE PGE RELY LOCKS (RELY LOCK LOCTION) R/ NO. (RIGHT KICK PNEL) 5 R/ NO. 5 (ENGINE COMPRTMENT FRONT RIGHT) : JUNCTION LOCK ND WIRE HRNESS CONNECTOR CODE SEE PGE JUNCTION LOCK ND WIRE HRNESS (CONNECTOR LOCTION) D 8 COWL WIRE ND J/ NO. (LEFT KICK PNEL) E H 8 ENGINE ROOM MIN WIRE ND J/ NO. (LEFT KICK PNEL) 0 ENGINE ROOM MIN WIRE ND J/ NO. (NER THE TTERY) C 0 ENGINE WIRE ND J/ NO. (NER THE TTERY) D E 0 ENGINE ROOM MIN WIRE ND J/ NO. (NER THE TTERY) COWL WIRE ND J/ NO. (EHIND COMINTION METER) : CONNECTOR JOINING WIRE HRNESS ND WIRE HRNESS CODE SEE PGE JOINING WIRE HRNESS ND WIRE HRNESS (CONNECTOR LOCTION) E 8 ENGINE WIRE ND COWL WIRE (RER SIDE OF RIGHT FRONT FENDER) ES 8 ENGINE WIRE ND ENGINE ROOM NO. WIRE (NER THE DISTRIUTOR) IE IE 0 ENGINE ROOM MIN WIRE ND COWL WIRE (LEFT KICK PNEL) IF 0 FLOOR WIRE ND COWL WIRE (LEFT KICK PNEL) IG IG 0 ENGINE WIRE ND COWL WIRE (UNDER THE ENGINE ECU) IJ COWL WIRE ND /C NO. WIRE (EHIND THE GLOVE OX) P FLOOR WIRE ND LUGGGE ROOM WIRE (LEFT QURTER PNEL CENTER) : GROUND POINTS CODE SEE PGE GROUND POINTS LOCTION E 8 FRONT LEFT FENDER EC 8 INTKE MNIFOLD ID 0 LEFT KICK PNEL L CK PNEL CENTER : SPLICE POINTS CODE SEE PGE WIRE HRNESS WITH SPLICE POINTS CODE SEE PGE WIRE HRNESS WITH SPLICE POINTS E 8 ENGINE ROOM MIN WIRE I E 5 I 6 COWL WIRE E 7 8 ENGINE WIRE I 7 ENGINE WIRE E 9 I 8 COWL WIRE 6