1999 TOYOTA CAMRY relay

KEY REMINDER AND SEAT BELT WARNING
2 1
12J 12 1D2
1T 3
1M 51S71S4
1J 71M 3DD
1W 1
IFBK
R±W
R L±B W± B
R±G W±B
R±L R±LFROM POWER SOURCE SYSTEM (
SEE PAGE 44)
10A
GAU GE7. 5A
DOME
SEAT BELT
WARNING LIGHT
[COMB. METER]JUNCTION
CONNECTOR
UNLOCK
WARNING SW
DOOR COURTESY
SW FRONT LH J 3
U 1
D 7
A
JUNCTION
CONNECTOR J34 A
JUNCTION
CONNECTOR J 9971
8 6 5 10C 7
A 4
BUZZER C C10 A , C12
2 1
R±Y W±B
BUCKLE
SW LH B 5 25A
DOOR
1D 1
B C
A A
A 13
J31
JUNCTION
CONNECTORB A, J32L±W L±W
I12
INTEGRATION RELAYA

Current always flows to TERMINAL 1 of the integration relay through the DOME fuse.
1. SEAT BELT WARNING SYSTEM
When the ignition SW is turned on, current flows from the GAUGE fuse to TERMINAL 7 of the integration relay. At the same
time, current flows to TERMINAL 9 of the relay from the GAUGE fuse through the seat belt warning light. This current
activates the relay and the current flowing through the warning light flows from TERMINAL 9 of the relay to TERMINAL 10 to
GROUND, causing the warning light to light up. A buckle SW off signal is input to TERMINAL 8 of the relay to TERMINAL 10
to GROUND, causing the warning light to light up. A buckle SW off signal is input to TERMINAL 8 of the relay, the current
flowing to TERMINAL 1 of the relay flows from TERMINAL 10 to GROUND and the seat belt warning buzzer sounds for
approx. 6 seconds. However, if the seat belt is put on during this period (While the buzzer is sounding), signal input to
TERMINAL 8 of the relay stops and the current flow from TERMINAL 1 of the relay to TERMINAL 10 to GROUND is cut,
causing the buzzer to stop.
2. KEY REMINDER SYSTEM
With the ignition key inserted in the key cylinder (Unlock warning SW on), the ignition SW still off and driver's door open
(Door courtesy SW on), when a signal is input to TERMINAL 6 of the integration relay, the relay operates, current flows from
TERMINAL 1 of the relay to TERMINAL 10 to GROUND and key reminder buzzer sounds.
B5 BUCKLE SW LH
1±2 : Closed with driver's seat belt in use
D7 DOOR COURTESY SW FRONT LH
1±GROUND : Closed with front LH door open
U1 UNLOCK WARNING SW
1±2 : Closed with ignition key in cylinder
I12 (A) INTEGRATION RELAY
10±GROUND : Always continuity
6±GROUND : Continuity with the front LH door open
5±GROUND : Continuity with the ignition key in cylinder
8±GROUND : Continuity with the driver's seat belt in use
1±GROUND : Always approx. 12 volts
(A)13±GROUND : Always approx. 12 volts
: PARTS LOCATION
CodeSee PageCodeSee PageCodeSee Page
B532I12A30J32B31
C10A30J331J3432
C12C30J931U131
D732J31A31
: JUNCTION BLOCK AND WIRE HARNESS CONNECTOR
CodeSee PageJunction Block and Wire Harness (Connector Location)
1D22Instrument Panel Wire and Instrument Panel J/B (Lower Finish Panel)
1J22Cowl Wire and Instrument Panel J/B (Lower Finish Panel)1M22Cowl Wire and Instrument Panel J/B (Lower Finish Panel)
1S22Floor Wire and Instrument Panel J/B (Lower Finish Panel)
1T22Instrument Panel Wire and Instrument Panel J/B (Lower Finish Panel)
1W22Cowl Wire and Instrument Panel J/B (Lower Finish Panel)
2J24Cowl Wire and Engine Room J/B No.2 (Engine Compartment Left)
: GROUND POINTS
CodeSee PageGround Points Location
IF36Instrument Panel Brace LH
BK40Under the Left Center Pillar
SYSTEM OUTLINE
SERVICE HINTS

REAR WINDOW DEFOGGER AND MIRROR HEATER
1R 31J13
ID II 1V 31G 7A A 10A
HEATER40A
DEF
DEFOGGER
RELAY
JUNCTION
CONNECTOR
FROM POWER SOURCE SYSTEM (
SEE PAGE 44)
W±B W± BB
W±B
13 25
IB1 8 2
IFID1 20 IL120 ID1 5IL15 10A
MIRROR±
HEATER
1T 51D4 1L 1 1J 12
3 A
A
A 45 A
A A
REAR WINDOW
DEFOGGER SW R 4 JUNCTION
CONNECTOR J30
JUNCTION
CONNECTORMIRROR HEATER RH
[REMOTE CONTROL MIRROR RH] MIRROR HEATER LH
[REMOTE CONTROL MIRROR LH]
JUNCTION
CONNECTOR J 9
L±B
L±B Y±G L±B
W±B
W± BW±B
W±B W±B
B±Y B±Y B±Y
B±Y
1
TIMER
CIRCUIT
REAR WINDOW
DEFOGGER
NOISE FILTER
(
REAR WINDOW DEFOGGER) N 211
2
1J 7
W±B
NOISE
FILTER W±B
AW±B
B
E IG D55 11
J35 J33
R14 R13

DEFOGGER RELAY
5±3 : Closed with the ignition SW at ON or ST position and the rear window defogger SW on
R4 REAR WINDOW DEFOGGER SW
4±GROUND : Approx. 12 volts with the ignition SW at ON or ST position
3±GROUND : Always continuity
R13, R14 MIRROR HEATER LH, RH [REMOTE CONTROL MIRROR LH, RH]
1±GROUND : Approx. 12 volts with the rear window defogger SW on
5±GROUND : Always continuity
: PARTS LOCATION
CodeSee PageCodeSee PageCodeSee Page
J931J3532R1333
J3031N233R1433
J3332R431
: JUNCTION BLOCK AND WIRE HARNESS CONNECTOR
CodeSee PageJunction Block and Wire Harness (Connector Location)
1D22Instrument Panel Wire and Instrument Panel J/B (Lower Finish Panel)1G22Instrument Panel Wire and Instrument Panel J/B (Lower Finish Panel)
1J
1L22Cowl Wire and Instrument Panel J/B (Lower Finish Panel)
1R
()
1T22Instrument Panel Wire and Instrument Panel J/B (Lower Finish Panel)
1V22Cowl Wire and Instrument Panel J/B (Lower Finish Panel)
: CONNECTOR JOINING WIRE HARNESS AND WIRE HARNESS
CodeSee PageJoining Wire Harness and Wire Harness (Connector Location)
IB136Floor Wire and Cowl Wire (Left Kick Panel)
ID136Front Door LH Wire and Instrument Panel Wire (Left Kick Panel)
IL138Front Door RH Wire and Instrument Panel Wire (Right Kick Panel)
: GROUND POINTS
CodeSee PageGround Points Location
ID36Cowl Side Panel LH
IF36Instrument Panel Brace LH
II36Right Kick Panel
SERVICE HINTS

5A
STARTER FROM POWER SOURCE SYSTEM (
SEE PAGE 44)
1J 3
IH1 5IC2 5 IE2 5IF117 IE23
IJ2 3B 2
B 5C10 A4C4C11 A3B7A12
EBB C
A B
IE1 6
11
IE1 7
2 1
IF
B±W Y±B Y±B
O O
R±W
R±L
P±L
Y±G P±L P±L W±B
Y±G
R±W R±W R±W
R±W W±B
B±W
PARK/NEUTRAL
POSITION SW P 1
OIL PRESSURE
SW O 1
WASHER LEVEL
WARNING SW W 1
JUNCTION
CONNECTOR J 1
BRAKE FLUID
LEVEL WARNING SW B 1
JUNCTION
CONNECTOR J 9
G±O
B
5
B 6
2B B
B
OI L
CRUISE
SEAT BELT
ABS
WASHER LEVEL
REAR LIGHTS
BRAKE
BULB
CHECK
RELAY
O/ D OFF
JUNCTION
CONNECTOR J22
P
N
A
TO CRUISE
CONTROL ECU
TO I NTEGRATION
RELAY
TO ABS ECU
TO LI GHT
FAI LURE
SENSOR
B±O
TO O/ D
MAIN SW
J 6
JUNCTION
CONNECTORB A, J 7
C10
COMBINATION METERB A, C11 C, C12
GR
IG211
IG210 B±W
GRGR
1
R±W
PARKING
BRAKE SW P 3

RADIATOR FAN AND CONDENSER FAN
40A
AM130A
CDS
1A 61K 1
15 2311
1115 23
4 11
111 13 4252K 6
2B 22F423 14
2F 22G1 30A
RDI
2 3
1 21 2
E 2 E 32C 12G72C22H2
1B 11K 2
EA1 1
EA1 2 F 1F2D1
A 1
EB1 2
B±G B±R
B±R
B±R
W±B W±BB±R W
B±Y B±R
L G± W
W±BL±W L±W W±B
W±BR G±W
B±R L
B±R B±W
W± BW±B
W± BW±RB±R G±W1
2
A 3
A/C SINGLE
PRESSURE SW W 4
WAT ER TEMP.
SW NO. 1
R 1
RADIATOR
FAN MOTOR
A/C CONDENSER
FAN MOTOR A 1
FUSIBLE LINK
BLOCKIGNITION SW I10
FAN
NO. 1
RELAY
ENGINE
MAIN
RELAY
FROM MG CLT
RELAY
FAN
NO. 3
RELAY
FAN NO. 2 RELAY
BATTERY 100A
ALT
FL MAIN
3. 0WF F14F12 , A F 9 D 24AM1ACC
IG1
1 22 1
, 15A
ECU±IG
W±B
M M

FAN MOTOR OPERATION
With the ignition SW turned on, the current through the ECU±IG fuse flows to the FAN NO.1 relay (Coil side), FAN NO.2 relay
(Coil side). furthermore, the current through the FAN NO.1 relay (Coil side) or the FAN NO.2 relay (Coil side) flows to
TERMINAL 3 of the A/C single pressure SW to TERMINAL 2 to TERMINAL 2 of the water temp. SW no.1 to TERMINAL 1 to
GROUND, causing the FAN NO.1 relay to turn off and the FAN NO.2 relay to turn on.
1. LOW SPEED OPERATION
When the ignition SW is turned on and the A/C system is activated, the A/C condenser fan motor and the radiator fan motor
rotates at low speed.
When the A/C system is activated, the current from MG CLT relay flows to the FAN NO.3 relay (Coil side) to GROUND,
causing the FAN NO.3 relay to turn on. As a result, the current through the CDS fuse flows to TERMINAL 2 of the A/C
condenser fan motor to TERMINAL 1 to TERMINAL 3 of the FAN NO.2 relay to TERMINAL 5 to TERMINAL 5 of the FAN
NO.3 relay to TERMINAL 3 to TERMINAL 2 of the radiator fan motor to TERMINAL 1 to GROUND.
2. HIGH SPEED OPERATION
Only when the A/C single pressure SW is turned off or the water temp. SW no.1 is turned off, the A/C condenser fan motor
and the radiator fan motor rotate at high speed.
When the A/C single pressure SW is turned off or the water temp. SW no.1 is turned off. the current from the RDI fuse flows
to the FAN NO.1 relay (Point side) to TERMINAL 2 of the radiator fan motor to TERMINAL 1 to GROUND. At the same time,
the current from the CDS fuse flows to TERMINAL 2 of the A/C condenser fan motor to TERMINAL 1 to TERMINAL 3 of the
FAN NO.2 relay to TERMINAL 4 to GROUND.
A3 A/C SINGLE PRESSURE SW
3±2 : Open above approx. 15.5 kgf/cm2
(220 psi, 1520 kpa)
Closed below approx. 12.5 kgf/cm2 (177 psi, 1225 kpa)
W4 WATER TEMP. SW NO.1
2±1 : Open above approx. 95°C (203° F)
: PARTS LOCATION
CodeSee PageCodeSee PageCodeSee Page
A128F12D28R129
A328F14F28W429
F9A28I1030
: RELAY BLOCKS
CodeSee PageRelay Blocks (Relay Block Location)
126Engine Room R/B No.1 (Engine Compartment Left)
: JUNCTION BLOCK AND WIRE HARNESS CONNECTOR
CodeSee PageJunction Block and Wire Harness (Connector Location)
1A
1B22Cowl Wire and Instrument Panel J/B (Lower Finish Panel)
1K
()
2B
2C
2F24Engine Room Main Wire and Engine Room J/B No.2 (Engine Compartment Left)
2G
gg(g)
2H
2K24Cowl Wire and Engine Room J/B No.2 (Engine Compartment Left)
: CONNECTOR JOINING WIRE HARNESS AND WIRE HARNESS
CodeSee PageJoining Wire Harness and Wire Harness (Connector Location)
EA134Engine Room Main Wire and Engine Room Main No.3 Wire (Radiator LH)
SYSTEM OUTLINE
SERVICE HINTS

AIR CONDITIONING
1 1
11 1
12
3584
IF EB215
4
23
1 HI M2 M11W 2
I 6L±B
B±W
L±B
B±WL±W W±B
W±BL±R W±B
L±W
10A
HEATER
1
HTR
RELAY
BLOWER RESISTOR
BLOWER
MOTOR
B±W
L±B
L±O
BLOWER SWOFF FROM POWER SOURCE SYSTEM (
SEE PAGE 44)
LO B 2B 3
B 412
1 1 EB131R 3
2C 92K 5
23 1511
11A
AAA
3
JUNCTION
CONNECTOR J 9JUNCTION
CONNECTOR J30 FUSIBLE
LINK BLOCK F13
L±R
L±B L±B
L±B L±B
B±WL±Y B±W
L±B
L±B L±B
L±RTO FAN NO. 3 RELAY MG CLT
RELAY
10A A/C
EB2 1EB12
L±R
W±B
L±B
W± B
W±BL±B W±BL±RL±Y B±WL±B
W±B
50A HTR
A
I 3 W±B 61 M