Shows place of the Electronic Control Unit, Relays, Relay Block, and so on This area is carefully related to the device circuit.
You are watching: 1997 toyota camry spark plug wire diagram
ELECTRICAL WIRING ROUTING
Describes place of Parts Connectors, Splice points, Ground points, and so on This section is carefully concerned the device circuit.
Index of the system circuits.
Electrical circuits of each mechanism are shown from the power supply through ground points. Wiring connections and also their positions are displayed and classified by code according to the link method. (Refer to the area, "How to use this manual"). The "System Outline" and "Service Hints" beneficial for troubleshooting are likewise consisted of in this section.
Shows ground positions of all parts defined in this manual.
POWER SOURCE (Current Flow Chart)
Describes power circulation from the power supply to miscellaneous electric tons.
Describes the create of the connectors for the components showed up in this book. This section is very closely related to the mechanism circuit.
PART NUMBER OF CONNECTORS
Indicates the part number of the connectors used in this hands-on.
OVERALL ELECTRICAL WIRING DIAGRAM
Provides circuit diagrams showing the circuit connections.
This hands-on offers indevelopment on the electrical circuits mounted on vehicles by separating them right into a circuit for each device.
The actual wiring of each system circuit is displayed from the point wbelow the power source is got from the battery as much as each ground allude. (All circuit diagrams are displayed with the switches in the OFF position.)
When troubleshooting any trouble, initially understand also the procedure of the circuit wright here the difficulty was detected (watch System Circuit section), the power source supplying power to that circuit (view Power Source section), and the ground points (watch Ground Point section). See the System Outline to understand the circuit procedure.
When the circuit procedure is interpreted, start troubleshooting of the difficulty circuit to isolate the cause. Use Relay Location and Electrical Wiring Routing sections to uncover each component, junction block and wiring harness connectors, wiring harness and also wiring harness connectors and also ground points of each device circuit. Internal wiring for each junction block is also provided for much better expertise of link within a junction block.
Wiring regarded each device is indicated in each system circuit by arrows (from_, to_). When in its entirety connections are required, view the Overall Electrical Wiring Diagram at the finish of this hands-on.
The system shown below is an EXAMPLE ONLY. It is various to the actual circuit displayed in the SYSTEM CIRCUITS SECTION.
Indicates a Relay Block. No shading is offered and also only the Relay Block No. is displayed to differentiate it from the J/B
Example: Indicates Relay Block No.1 ( ) is offered to show different wiring and connector, etc. once the vehicle design, engine form, or specification is different.
Indicates associated system. Indicates the code for the (male and female) connectors which are provided to sign up with 2 wire harnesses. The connector code is composed of 2 alphabetical and one numerical characters.
Male ( ^ )
The first character of the connector code indicates the alphabetical code allocated to the wire harness which has the female connector, and the second mirrors that of the wire harness which has the male connector.
The third character shows a serial number offered to differentiate between the wire harness combinations in situations as soon as more than one of the exact same combination of wire harnesses exist (e.g. CH1 and also CH2).
Symbol ( ^ ) suggests the male terminal connector. Numbers outside connector codes show the pin numbers of both male and female connectors.
The code is the same as the code provided in components position.
No. and the connector code is presented next to it). Junction Blocks are shaded to clearly separate them from other components.
Example: 15(30) 3C suggests that it is inside Junction Block No.3
Wire colors are indicated by an alphabetical code.
B = Babsence W = White BR = Brown
V = Violet G = Green
Y = Yellow
L R P O
SB = Sky Blue LG = Light Environment-friendly GR = Gray
The first letter shows the basic wire color and the second letter suggests the color of the stripe.
Example: L - Y
L - Y (Blue) (Yellow)
: Indicates a shielded cable.
Indicates the pin number of the connector. The numbering mechanism is various for female and male connectors.
Numbered in various other from top left to reduced right
Numbered in various other from upper best to reduced left
Indicates the ground point. The code consists of the two characters: A letter and also number. The initially character of the code suggests the alphabetical code alsituated to the wire harness. The second character shows a serial number supplied to identify between the ground points in situations when more than one ground point exist on the same wire harness.
Current is applied at all times through the STOP fuse to TERMINAL 2 of the sheight lamp SW.
When the ignition SW is turned on, existing flows from the GAUGE fuse to TERMINAL 8 of the light faiattract sensor, and also also flows with the rear lights warning light to TERMINAL 4 of the light failure sensor.
Speak Light Dislink Warning
When the ignition SW is turned on and the brake pedal is pressed (Stop lamp SW on), if the sheight light circuit is open, the existing flowing from TERMINAL 7 of the light faiattract sensor to TERMINALS 1, 2 changes, so the light faiattract sensor detects the disconnection and the warning circuit of the light faitempt sensor is caused.
As a result, the current flows from TERMINAL 4 of the light failure sensor to TERMINAL 11 to GROUND and transforms the rear lights warning light on. By pushing the brake pedal, the present flowing to TERMINAL 8 of the light faitempt sensor keeps the warning circuit on and also holds the warning light on till the ignition SW is turned off.
O : Parts Location
O : Relay Blocks
Relay Blocks (Relay Block Location)
R/B No.1 (Instrument Panel Brace LH)
Junction Block and also Wire Harness (Connector Location)
Instrument Panel Wire and also J/B No.3 (Instrument Panel Brace LH)
Instrument Panel Wire and also Instrument Panel J/B (Lower Finish Panel)
%u25A1 : Connector Joining Wire Harness and Wire Harness
Joining Wire Harness and Wire Harness (Connector Location)
Engine Room Key Wire and also Instrument Panel Wire (Left Kick Panel)
Instrument Panel Wire and Floor Wire (Right Kick Panel)
: Ground Points
Ground Points Location
Under the Left Center Pillar
Back Panel Center
: Indicates reference pperiods showing the parts places in the mechanism circuit on the automobile.
Example : Code "H4" (Light Failure Sensor) is on web page 36 of the hand-operated.
* The initially character of the code suggests the alphabetical code allocated to the wire harness, and also the second character indicates the serial number of the parts connected to the wire harness.
Example : H 4
T"1--Serial number for the connected parts
-Code for the wire harness
: Indicates the recommendation web page reflecting the place on the auto of Relay Block Connectors in the mechanism circuit.
Example : Connector "1" is explained on page 18 of this hand-operated and also is set up on the left side of the instrument panel.
Example : Connector "3C" connects the Instrument Panel Wire and J/B No.3. It is defined on web page 22 of this hands-on, and also is mounted on the instrument panel left side.
: Indicates the reference web page describing the wiring harness and also wiring harness connector (the female wiring harness is presented initially, followed by the male wiring harness).
Example : Connector "CH1" connects the Engine Room Key Wire (female) and Instrument Panel Wire (male). It is explained on page 42 of this hand-operated, and is mounted on the left side kick panel.
Example : Ground point "H2" is described on web page 50 of this hand-operated and also is mounted on the earlier panel facility.
The ground points circuit diagram shows the relations from all major components to the corresponding ground points. When troubleshooting a faulty ground allude, checking the mechanism circuits which use a prevalent ground might aid you identify the trouble ground conveniently. The connection between ground points ( , and also oy presented below) deserve to likewise be checked this way.
I GROUND POINT
D43 Junction Connector 6 (Shielded)
A20 Headlamp Leveling Motor (LH)
D63 Throttle (L) Position SW
D60 Injection (EI> Pump Assembly
A10 Brake Fluid Level Warning SW
K5 Power Window (E> Master SW
D63 Throttle (L) Position SW
D60 Injection (EI> Pump Assembly
Headlamp Leveling Motor (RH) (RH E)
W - B
W - B
Turn Signal Lamp
W - B
W - B
W - B
W - B
Fog Lamp (E) (Front LH)
W - B
Fog Lamp (E) (Front RH)
Brake Fluid Level Warning SW
W - B ...W - B _j.W - B
W - B
Turn Signal Lamp
(E) (Front RH)
Power Window (E> Master SW
Option Connector (Vacuum)
Skid Control ECU
The device presented here is an EXAMPLE ONLY. It is different to the actual circuit shown in the SYSTEM CIRCUITS SECTION.
The "Current Flow Chart" area, explains which components each power resource (foffers, fusible links, and circuit breakers) transmits present to. In the Power Source circuit diagram, the problems as soon as battery power is supplied to each device are explained. Because all System Circuit diagrams begin from the power source, the power source mechanism should be completely understood.
J POWER SOURCE (Current Flow Chart)
The chart listed below mirrors the course by which existing flows from the battery to each electric resource (Fusible Link, Circuit Breaker, Fues, and so on.) and various other parts
Engine Room R/B
1.25B FL MAIN
H8 Ignition SW
W - R Battery
S 2 Starter
The mechanism shown here is an EXAMPLE ONLY It is different to the actual circuit displayed in the SYSTEM CIRCUITS SECTION.
BA1 I Black
: Junction Connector
Indicates a connector which is linked to a short terminal.
Junction connector in this manual incorporate a short terminal which is connected to a variety of wire harnesses. Almethods perdevelop inspection via the short terminal set up.
The first letter of the code is taken from the first letter of component, and also the numbers shows its order in parts which begin via the same letter.
Connectors not suggested are milky white in shade.
On Left : Female connector forms On Right : Male connector shapes Numbers indicate pin numbers.
PART NUMBER OF CONNECTORS
Turn Signal Lamp (Front RH)
Door Courtesy SW (Front LH)
Inlet Air Temp. Sensor
Front Seat Outer Belt (LH)
Air Flow Meter
Blower SW (Rear Heater)
A/C Pressure Sensor
Front Seat Outer Belt (RH)
Door Courtesy SW (Front RH)
Clearance Lamp (Front RH)
Cooling Fan ECU No.1
Cooling Fan ECU No.2
Headlamp Leveling Motor (RH)
Water Temp. Sensor (Radiator)
Brake Vacuum Warning SW
Fuel Filter Warning SW
Brake Fluid Level Warning SW
Door Control Relay (LH)
Windshield Washer Motor
Step Lamp (LH)
Airbag Sensor (Front RH)
: Part Name
Toyota Part Number are shown.
Not all of the above part numbers of the connector are establimelted for the supply.
To Ignition SW
(a) Establish problems in which voltage is present at the check suggest.
- Ignition SW and also SW 1 on
(b) Using a voltmeter, affix the negative cause a great ground point or negative battery terminal, and also the positive lead to the connector or component terminal.
This examine deserve to be done through a test light rather of a voltmeter.
CONTINUITY AND RESISTANCE CHECK
(a) Disaffix the battery terminal or wire so there is no voltage between the examine points.
(b) Contact the 2 leads of an ohmmeter to each of the check points.
Digital Type Analog Type
If the circuit has diodes, reverse the two leads and also inspect aobtain.
When contacting the negative bring about the diode positive side and the positive cause the negative side, there must be continuity.
When contacting the two leads in reverse, there must be no continuity.
(c) Use a volt/ohmmeter with high impedance (10 kQ/V minimum) for troubleshooting of the electric circuit.
FINDING A SHORT CIRCUIT
(a) Rerelocate the blvery own fusage and disaffix all tons of the fusage.
(b) Connect a test light in place of the fusage.
(c) Establish conditions in which the test light comes on.
- Ignition SW and also SW 1 on
Relay) and SW 2 off (or Disconnect SW 2)
(d) Disattach and reattach the connectors while watching the test light.
The brief lies in between the connector wright here the test light continues to be lit and the connector wbelow the light goes out.
(e) Find the exact area of the short by lightly shaking the difficulty wire alengthy the body.
(a) Do not open up the cover or the instance of the ECU unmuch less absolutely crucial. (If the IC terminals are touched, the IC may be damaged by static electrical energy.)
(b) When replacing the inner system (ECU part) of the digital meter, be mindful that no part of your body or clothing comes in contact through the terminals of leads from the IC, and so on. of the replacement component (spare part).
DISCONNECTION OF MALE AND FEMALE CONNECTORS
To pull acomponent the connectors, pull on the connector itself, not the wire harness.
HINT: Check to see what type of connector you are disconnecting before pulling apart.
HOW TO REPLACE TERMINAL
(via terminal retainer or second locking device)
1. PREPARE THE SPECIAL TOOL
HINT: To rerelocate the terminal from the connector, please construct and also use the distinct tool or prefer object shown on the left.
2. DISCONNECT CONNECTOR
3. DISENGAGE THE SECONDARY LOCKING DEVICE OR
(a) Locking gadget must be disinvolved before the terminal locking clip can be released and the terminal removed from the connector.
(b) Use a one-of-a-kind tool or the terminal pick to unlock the additional locking gadget or terminal retainer.
Do not remove the terminal retainer from connector body.
HINT : The needle insertion place varies according to the connector"s shape (number of terminals etc.), so check the position prior to inserting it.
Raise the terminal retainer as much as the short-term lock position.
Open the additional locking device.
For Waterproof Type Connector
HINT: Terminal retainer shade is various according to connector body.
Terminal Retainer : Connector Body Babsence or White : Gray Black or White : Dark Gray Gray or White : Black
Type wbelow terminal retainer is pulled up to the short-term lock position (Pull Type).
Insert the special tool right into the terminal retainer accessibility hole (^Mark) and also pull the terminal retainer as much as the temporary lock place.
HINT: The needle insertion position varies according to the connector"s form (Number of terminals etc.), so inspect the position before inserting it.
Type which cannot be pulled as far as Power Lock insert the tool straight right into the access hole of terminal retainer as displayed.
Push the terminal retainer down to the temporary lock position.
(c) Release the locking lug from terminal and pull the terminal out from rear.
INSTALL TERMINAL TO CONNECTOR
(a) Insert the terminal. HINT:
1. Make certain the terminal is positioned properly.
2. Insert the terminal till the locking lug locks firmly.
3. Insert the terminal with terminal retainer in the short-term lock position.
(b) Push the second locking device or terminal retainer in to the full lock position.
The adhering to abbreviations are provided in this manual.
= Air Conditioning
= Automatic Transaxle
= Anti-Lock Brake System
= Acoustic Control Induction System
= Active Control Engine Mount
= Controller Area Network
= Electronic Control Unit
= Electronic Spark Advance
= Electronic Throttle Control System
= Fusible Link
= Integrated Circuit
= Junction Block
= Liquid Crystal Display
= Manual Transaxle
= Relay Block
= Sequential Multiport Fuel Injection
= Supplemental Restraint System
= Traction Control
= Vehicle Stcapacity Control
= Vacuum Switching Valve
= Variable Valve Timing
= Variable Valve Timing-intelligent
* The titles given inside the components are the names of the terminals (terminal codes) and also are not treated as being abbreviations.
Stores chemical energy and also converts it right into electric power. Provides DC present for the auto"s various electrical circuits.
The point at which wiring attaches to the Body, thereby giving a rerevolve course for an electric circuit; without a ground, current cannot flow.
A tiny holding unit for short-term storage of electric voltage.
An electric resistance heating aspect.
HEADLIGHTS 1. SINGLE Current circulation causes a headlight FILAMENT filament to warm up and also emit light. A headlight might have actually either a single (1) filament or a twin (2) filament
2. DOUBLE FILAMENT
Basically a reusable fusage, a circuit breaker will heat and open up if as well a lot existing flows through it. Some systems automatically reset when cool, others have to be manually reset.
An electrical gadget which sounds a loud audible signal.
A semiconductor which enables present flow in only one direction.
Converts low-voltage DC present into high-voltage ignition present for firing the spark plugs.
A diode which enables current circulation in one direction but blocks reverse circulation just up to a particular voltage. Above that potential, it passes the excess voltage. This acts as an easy voltage regulator.
Current circulation with a filament reasons the filament to heat up and emit light.
The photodiode is a semiconductor which controls the existing circulation according to the amount of light.
LED (LIGHT EMITTING DIODE)
Upon present circulation, these diodes emit light without creating the warmth of a similar light.
Channels high-voltage existing from the ignition coil to the individual spark plugs.
Current flow activates a magnetic coil which causes a needle to move, thereby giving a loved one screen versus a background calibration.
A thin steel strip which burns via as soon as also much present flows through it, thereby stopping existing circulation and protecting a circuit from damages. FUSIBLE LINK (for Medium Current Fuse) a heavy-gauge wire placed in high
amperage circuits which burns with on overlots, thereby protecting the circuit. The numbers indicate the crosssection surchallenge location of the wires.
Current circulation activates one or many LED"s, LCD"s, or fluorescent screens, which carry out a family member or digital screen.
(for High Current Fuse or Fusible Link)
A power unit which converts electrical energy right into mechanical power, especially rotating motion.
Basically, an electrically operated Current flow with a small coil creates a magnetic field which either opens or closes an attached switch.
1. NORMALLY switch which might be commonly CLOSED closed (1) or open (2).
2. NORMALLY OPEN
An electromechanical device which creates sound waves from existing circulation.
1. NORMALLY OPEN
RELAY, DOUBLE THROW
A relay which passes present with one set of contacts or the other.
An electric component through a solved resistance, inserted in a circuit to mitigate voltage to a particular worth.
A resistor which offers 2 or even more various non adjusecure resistance worths.
Opens and closes circuits, thereby preventing (1) or allowing (2) present flow.
2. NORMALLY CLOSED
RESISTOR, VARIABLE or RHEOSTAT
A manageable resistor with a variable price of resistance. Also called a potentiometer or rheostat.
SWITCH, DOUBLE THROW
A switch which repeatedly passes existing with one collection of contacts or the other.
A key operated switch with numerous positions which enables various circuits, particularly the major ignition circuit, to come to be operational.
(Reed Switch Type)
A resistor which varies its resistance through temperature.
Uses magnetic impulses to open up and also close a switch to create a signal for activation of other components.
A solidstate gadget commonly offered as an electronic relay; stops or passes present depending upon the voltage used at "base".
SWITCH, WIPER PARK
Automatically returns wipers to the speak place once the wiper switch is turned off.
A solidstate gadget typically used as an electronic relay; stops or passes existing depending upon the voltage applied at "base".
Used to administer an unbroken connection within a junction block.
An electromagnetic coil which forms a magnetic field once present flows, to move a plunger, and so on.
Wires are constantly attracted as (1) NOT right lines on wiring
See more: What Are The Most Abundant Protein In The Body, Type I Collagen
Crossed wires (1) without a babsence dot at the junction are not joined; crossed wires (2) through a babsence dot or octagonal ( O ) mark at the junction are spliced (joined) relationships.