1999 TOYOTA CAMRY relay

1
234
4
B
15 CAMRY CNG
W
J12
JUNCTION
CONNE CT ORW
SRRR
B
R
2ACC
IG1 AM1
SFLR 4
SRRH SRLH
G
G±B
SRLR 40A
AM1
W± B
W± R
MTR± W J22
JUNCTION
CONNE CTOR
LG±B
W± L W±RR±GG± Y
1
23
4
L±B
W±R
R±B R± L
31
64
2
B W
3
R
3 1
GR
35
G
3
SFRH
G±W
LG±R
3
ABS SOL RELAYR± L
2
3
LG±R LG±R
SFRR 3
SRRR 3
B± Y
3ABS MOTOR RELAY LG±R
1K 2
R±Y
1B 1
G±BR±Y
1A
G±B
7A
G±B
R± L
26 B
R± L R±L
13 B
B±R
GR ± R B±R
GR
GR±L1K 1
GR
1J 9
W± L
W± B
1D 2
5
GR±L
1F
W±R
2FW
1B
B±G B± G
B±R
B±R B±R
B±Y
11 B GR±R
21 B
W± B
W± R12 I F1
SRRH
W± L12 12
C
6IJ2 D
7
1IJ2 C
2A C
B
8A B
9A
GN D GND3A B 24 5 B 8B IJ28
TC
W± B
1A
W± B
25 B 2B12 B
EA 1B A 6A 11A
2 12 A
1 15 B 14 B A10
1B
21 5B 3B 7B 4B 8BIK1 2
2B 6BABS
IK1 1
3AIB1 3 IB1 99B IG3 4
B 22 C
B 23
M D
1AB 10
4A C
2A
B
SFLH
R
G
J 3
JUNCTION
CONNECTOR
C1 2
ABS WARNI NG LI GHT
[COMB. METER]
I10
IGNITION SW
100A
AL T
,
B
BATTERY FUSIBLE LINK
BL OCKABS ACTUAT OR
FL MAIN
3. 0W
15A ECU±IG10A GAUGE
A 7
ABS SPEED SENSOR
FRONT RH
,
ABS ECUA 6
ABS SPEED SENSOR
FRONT L H
From Stop Light
SW< 8±4>A19
ABS SPEED
SENSOR
REAR LHA20
ABS SPEED
SENSOR
REAR RH
Power SourceAB S1 2
IG3 R±L
MR SR R+ I G1 WA TS TC D/G STP FL± FL+ FR± FR+
RR+ RR± RL+ RL ±
MT SRLHTS
SF LR14
SFLH SFRR4
SFRH
BS BM11
E TC D 1
DATA LINK
CONNECTOR 1
IG3 8 WB
11 16 WA
22
(
Short Pin)23R±L
D 2
DATA LINK
CONNECTOR 2
W± B
Fr om Airbag Sens or
Assembly< 14±4>
J 2
JUNCTI ON
CONNECTORB
B 510
A/ D AB
From Cruise Control
ECU< 13±2>
Fr om Cent er Airbag Sensor
Assembly< 14±4>
P± B
LG±R From Cruise Control
ECU< 13±2>
IFInstr ument panel
br ac e LH AE1
LGO
5IG3A C
EC BB
6IG3
BR BR BRA A BRBR
3
Intake manifold , F10 F 9 A B
A 5 A F1 4 F
A 4 , A14 A13 A B GR±R
1IJ1
IJ2 5 13 IJ2 11 IJ2 12 IJ2
LG±B
G±Y
W± R
R± B
J 9
JUNCTION
CONNECTOR
60A FL ABS
SRLR
Right radiator
s ide s uppor t
JUNCTION
CONNECTORB A J 6 J 7, J20
JUNCTION
CONNECTOR
E13
A
BR
BR

1
234
16 CAMRY CNG
2ACC
IG1 AM1 4
40A
AM1
1F 2F 1C7
1A1K 241B
1B 1
1J 71M31M51S7
IF Inst rument panel
brac e LH2 16 2 1
3 5
2K 10 2F1
1W 110A
HORN
7. 5A DOME
10A GAUGE
11K2A 1
2 1
100A
ALT 2
AC 1
10 5 6C I10
IGNITION SW
H 3
HORN
(
Hi g h)H 4
HORN
(
Low) 1 B±Y
B± R
SHORT PI N
U 1
UNLOCK WARNING SW
BATT ERY
J 9
JUNCTION
CONNE CTORHORN
RE LA Y
B±R W
B± R
B±R B±R
BB±GL±B
W± B
W± BW± B
2J 12
G±W
FL MAIN
3. 0W
G±W
G±B G±B B
Power SourceHorn
41S
2 1
BK AW± B R±Y
1D 2
D
7C
4A
1T 3R±W J 3
JUNCTI ON
CONNECTOR9
8 B
DR±L R±LR
Under the
left c ent er
pillar B±R
11 11D
CB
AA
13 A
L±W25A
DOORL±W
FUSI BLE LI NK BLOCKC A F 9 F11, FF1 4 , JUNCTION
CONNECTORB A J31 J32, SEAT BEL T WARNI NG
LIGHT[COMB. METER]C A C1 0 C1 2,
I12
INTEGRATION
RELAYA
B 5
BUCKLE SW LH
J34
JUNCTION
CONNECTORJ 1
JUNCTI ON
CONNE CT OR
C1 4
HORN S W
[COMB. SW]
See Light Auto
Turn Off System< 6±2>
K ey Reminder and S eat B elt W arning

1
234
18 CAMRY CNG11F2F
1AB± R
B±R
40A
AM1B±R
1B 11K 22ACC
IG1 AM1 4B±Y
L±B
10A
MIRROR±
HEATER
10A HEATER15A ECU±IG
40A DEF
30A
RDI
A30A
CDS
1T 5 1D 41J71R 31A6
2H 2
5IL1 ID15
8IB11L 11J12
1V 3
II Ri g ht k i ck
panelID Cowl side
panel LHInstrument
panel br ace
LH IF
B±R
L±B
20 ID1 20 IL11K 1 1B 4
2K 62B2
1 2
M 4
3 1
2
2 1
3 54 1
2 5
3
42F 2C 2 1J 13
1G 72 3
1 2
2EA1 1EA1
ENGI NE MAI N
RE L AY
1 2
5 3
4 1 1
1 G±W
11 2G 7 2F 2 2C 112G
3
5 2
11 2
M
W± B 11
B±R 11
EBLeft r adiator
side support W± B
B±R
W± B
W± BB±W
G±W
L±W L±W W±BW±R
B±RW± B W± B
B±R R
G± W
L
L
B±R
B
A
Y±G
W±B
11
A22
FAN NO. 2
RE LA Y
R 1
RA DI AT OR
FAN MOTOR
A 3
A/C SI NGLE
PRESSURE SWFA N NO. 3 RE LA Y
J30
JUNCTION
CONNECTORW 4
WATER TEMP.
SW NO. 1 From MG CLT
Relay< 19±2>
FAN NO. 1
RE LA Y
DEFOGGER
RELAY
AA AA
W±B J33
JUNCTION
CONNECTOR
J35
JUNCTION
CONNECTOR B±Y
B±YB±Y
B±YW±B
W±B W±BW± B
B±G 100A ALT
B± R B± R
B±R B±R
I10
IGNI TION SW
BATTERY FL MAIN
3. 0WFUSIBLE LI NK BLOCK
B± Y
B± R
Power Source Rear W indow Defogger and M irror Heater Radiator Fan and Condenser Fan
D
B±R B±R
2 1
W± B
1J 11To Diode
(
Idle±Up)
<2±8> B±Y
1 2W
AA
J 9
JUNCTI ON
CONNECTOR
W± B
A 1
A/C CONDENSER
FAN MOTOR
W± B3 54
L±B W±B
DIG
E
R 4
REAR WINDOW
DEFOGGER SW
B±R1
NOI SE F I LT ER
REAR WI NDOW
DEFOGGER
N 2
NOI SE F I LT ER
(
Rear Window
Def ogger)1
D F 9 F12A, FF14 , W± B
W± B B
R1 3
MI RROR HEATER LH
[ RE MOTE CONT ROL
MI RR O R L H]
R14
MI RROR HEAT ER RH
[REMOTE CONTROL
MIRROR RH]
11
5 5
W±R
W± B
2

1
234
1
19 CAMRY CNG
1
1F 2F 1E1
100A ALT 50A HTR1B 12K
5
3 1K
1
2 4
B±Y AM1 IG1ACC
2
I10
IGNITION SW
2
1
EBLeft r adiator
side support51
2 1
3 5
41
8 1
10A A/C
11
1 15
1 EB2
HT R REL A Y
2EB1
1 2
M1
L±R2C 9
MG CLT RELAY 10A HEATER
1W 231R1K 1
1L±B
6
HI M2 M1
LO OFF 2
3
IF Ins tr ument
panel br ac e
LH1345 3
FACE 21
B/L 87
FOOT65
F/D4 GN D FA C E B / L FOOT F/ D D EFF/D
DEF FOOT B/L
FACE
DEF 2
M
EC Intake
man i f ol d6IG3
OFF
ON10 I J2 9IJ2
D J12
JUNCTION
CONNECTOR
EB13
BR
D
To Engine Cont rol
Module< 2±10>BR± B
D
GND
To Engine Cont rol
Module< 2±10>R± W
A
IGAJ20
JUNCTI ON
CONNECTOR
7
B±G
6
B±R B±R
B± R
A
WW±B
A
B±W L±R
A
L±R L±W L±WW± B
B±WL±B W± BW± B L±B L±B
L±O L±R R±B W± B
1
L±WL
A
L±RB± L
A
L±O
L±B
3
B±W
4L±B
BR
L±B
BR BR
W± L
L±B
1A40A
AM1
BATTERYL±B
2
L±Y
L±R L±RL±B14
GB±W
L±R R±B
215
L±R R± B
12
BR
A12
A/C SW A15
AIR VENT MODE CONTROL SERVO MOTOR B 4
BLOWER SW
L±B
L±B
4
FL MAIN
3. 0W
W± BCONT ROL
CIRCUIT
Power SourceAir ConditioningF 9 F1 3, AE
F1 4,
FUSI BL E L I NK
BL OCKFB B H 7
HEATER CONTROL SW
B 3
BLOWER RESISTORJ12
JUNCTION
CONNECTOR
J30
JUNCTION
CONNECTOR
A 2
A/C MAGNETIC CLUTCH
AND LOCK SENSOR A 3
A/C DUAL PRESSURE SW
B 2
BLOWER MOTOR
W±B 2
1B±Y
B±W
J 9
JUNCTION
CONNECTOR
L±Y
To FAN NO. 3
Relay< 18±3> B± WIJ22
To Engine Contr ol
Module< 2±10> G
J 7
JUNCTION
CONNE CT OR
Fr om Engine Contr ol
Module< 2±10> W±L
B B
IJ27
To Engine
Cont rol Module
< 2±10>
A
B

A INTRODUCTION
This manual consists of the following 12 sections:
No.
SectionDescription
A
INDEXIndex of the contents of this manual.
A
INTRODUCTIONBrief explanation of each section.
BHOW TO USE THIS
MANUALInstructions on how to use this manual.
CTROUBLE±
SHOOTINGDescribes the basic inspection procedures for electrical circuits.
DABBREVIATIONSDefines the abbreviations used in this manual.
E
GLOSSARY OF
TERMS AND
SYMBOLS
Defines the symbols and functions of major parts.
FRELAY LOCATIONSShows position of the Electronic Control Unit, Relays, Relay Block, etc.
This section is closely related to the system circuit.
GELECTRICAL
WIRING ROUTINGDescribes position of Parts Connectors, Splice points, Ground points, etc.
This section is closely related to the system circuit.
INDEXIndex of the system circuits.
H
SYSTEM CIRCUITS
Electrical circuits of each system are shown from the power supply through ground
points. Wiring connections and their positions are shown and classified by code
according to the connection method. (Refer to the section, ºHow to use this manualº).
The ºSystem Outlineº and ºService Hintsº useful for troubleshooting are also contained
in this section.
IGROUND POINTSShows ground positions of all parts described in this manual.
J
OVERALL
ELECTRICAL
WIRING DIAGRAM
Provides circuit diagrams showing the circuit connections.
KPOWER SOURCE
(Current Flow Chart)Describes power distribution from the power supply to various electrical loads.
LPART NUMBER OF
CONNECTORSIndicates the part number of the connectors used in this manual.

HOW TO USE THIS MANUAL B
This manual provides information on the electrical circuits installed on vehicles by
dividing them into a circuit for each system.
The actual wiring of each system circuit is shown from the point where the power
source is received from the battery as far as each ground point. (All circuit
diagrams are shown with the switches in the OFF position.)
When troubleshooting any problem, first understand the operation of the circuit
where the problem was detected (see System Circuit section), the power source
supplying power to that circuit (see Power Source section), and the ground points
(see Ground 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 Wiring 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 Electrical
Wiring Diagram at the end of this manual.

B
[A]: System Title
[B]: Indicates a Relay Block. No shading is used and
only the Relay Block No. is shown to distinguish it
from the J/B
Example : Indicates Relay Block No.1
[C]: ( ) is used to indicate different wiring and
connector, etc. when the vehicle model, engine
type, or specification is different.
[D]: Indicates related system.
[E]: Indicates the wiring harness and wiring harness
connector. The wiring harness with male terminal is
shown with arrows (
).
Outside numerals are pin numbers.
Female Male ( )
The first letter of the code for each wiring harness
and wiring harness connector(s) indicates the
component's location, e.g, ºEº for the Engine
Compartment, ºIº for the Instrument Panel and
Surrounding area, and ºBº for the Body and
Surrounding area.
When more than one code has the first and second
letters in common, followed by numbers (e.g, IH1,
IH2), this indicates the same type of wiring harness
and wiring harness connector.
[F]: Represents a part (all parts are shown in sky blue).
The code is the same as the code used in parts
position.
[G]: Junction Block (The number in the circle is the J/B
No. and the connector code is shown beside it).
Junction Blocks are shaded to clearly separate
them from other parts.
3C indicates
that it is inside
Junction Block
No.3 Example:

[H]: When 2 parts both use one connector in common,
the parts connector name used in the wire routing
section is shown in square brackets [ ].[I]: Indicates the wiring color.
Wire colors are indicated by an alphabetical code.
B = Black W = White BR = Brown
L = Blue V = Violet SB = Sky Blue
R = Red O = Orange LG = Light Green
P = Pink Y = Yellow GR = Gray
G = Green
The first letter indicates the basic wire color and the
second letter indicates the color of the stripe.
Example: L ± Y
L
(Blue)Y
(Yellow)
[J]: Indicates a wiring Splice Point (Codes are ºEº for the
Engine Room, ºIº for the Instrument Panel, and ºBº
for the Body).
The Location of splice Point I 5 is indicated by the
shaded section.
[K]: Indicates a shielded cable.
[L]: 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 rightNumbered in order
from upper right to
lower left
Female Male
[M]: Indicates a ground point.
The first letter of the code for each ground point(s)
indicates the component's location, e.g, ºEº for the
Engine Compartment, ºIº for the Instrument Panel
and Surrounding area, and ºBº for the Body and
Surrounding area.
[N]: Page No.

H17GRAY
12X 4
2 1
X7 8
X11 X

X
3


61

2

13



X 4






X
3


6 C7 L4 R6 R7 S6
[X] [O]
[P]
[Q]
[R]
[S]
[T]
[U]
[V]
[W]
B HOW TO USE THIS MANUAL
Current is applied at all times through the STOP fuse to TERMINAL 2 of the stop light SW.
When the ignition SW is turned on, current flows from the GAUGE fuse to TERMINAL 8 of the light failure sensor, and also flows
through the rear lights warning light to TERMINAL 4 of the light failure sensor.
STOP LIGHT DISCONNECTION WARNING
When the ignition SW is turned on and the brake pedal is pressed (Stop light SW on), if the stop light circuit is open, the current
flowing from TERMINAL 7 of the light failure sensor to TERMINALS 1, 2 changes, so the light failure sensor detects the
disconnection and the warning circuit of the light failure sensor is activated.
As a result, the current flows from TERMINAL 4 of the light failure sensor to TERMINAL 11 to GROUND and turns the rear lights
warning light on. By pressing the brake pedal, the current flowing to TERMINAL 8 of the light failure sensor keeps the warning
circuit on and holds the warning light on until the ignition SW is turned off.
S6 STOP LIGHT SW
2±1 : Closed with the brake pedal depressed
L4 LIGHT FAILURE SENSOR
1, 2, 7±GROUND : Approx. 12 volts with the stop light SW on
4, 8±GROUND : Approx. 12 volts with the ignition SW at ON position
11±GROUND : Always continuity
: PARTS LOCATION
CodeSee PageCodeSee PageCodeSee Page
C734L436R737
H1736R637S635
: RELAY BLOCKS
CodeSee PageRelay Blocks (Relay Block Location)
118R/B No.1 (Instrument Panel Left)

@@@ @@@ @@@
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ÀÀÀ ÀÀÀ ÀÀÀ
: JUNCTION BLOCK AND WIRE HARNESS CONNECTOR
CodeSee PageJunction Block and Wire Harness (Connector Location)
IB20Instrument Panel Wire and Instrument Panel J/B (Lower Finish Panel)
3C22Instrument Panel Wire and J/B No.3 (Instrument Panel Left Side)
: CONNECTOR JOINING WIRE HARNESS AND WIRE HARNESS
CodeSee PageJoining Wire Harness and Wire Harness (Connector Location)
IE142Floor Wire and Instrument Panel Wire (Left Kick Panel)
BV150Luggage Room Wire and Floor Wire (Luggage Compartment Left)
: GROUND POINTS
CodeSee PageGround Points Location
BL50Under the Left Quarter Pillar
BO50Back Panel Center
: SPLICE POINTS
CodeSee PageWire Harness with Splice PointsCodeSee PageWire Harness with Splice Points
I544Cowl WireB1850Luggage Room Wire
SYSTEM OUTLINE
SERVICE HINTS