2000 TOYOTA CAMRY relay

3. AUTOMATIC LIGHT CONTROL OPERATION
When the daytime running light is operating and the Automatic control sensor detects a decrease in the ambient light (It
continues less than approx. 2500 lux over about 20 seconds, and it is less than 1000 lux.), the automatic light control
operation starts. At the same time, daytime running light relay (Main) is activated, so current flows from the ALT fuse to the
Taillight relay (Coil side) to TERMINAL TAIL of the daytime running light relay (Main), and the DRL NO.2 fuse to the DRL
NO.4 relay (Coil side) to TERMINAL H±ON of the daytime running light relay (Main), activating both the Taillight relay and the
DRL NO.4 relay, so that the taillights and headlights light up.
When the automatic light control sensor detects an increase in the ambient light (It continues more than approx. 1000 lux
over about 20 seconds, and it is more than approx. 2500 lux), the ignition SW is turned to off, the light control SW is turned to
HEAD position, and the automatic light control operation stops.
HEAD RELAY [ENGINE ROOM J/B NO.2]
1±2 : Closed with the light control SW at HEAD position or the dimmer SW at FLASH position
Closed with the engine running and the parking brake lever is released (Parking brake SW off)
TAILLIGHT RELAY [INSTRUMENT PANEL J/B]
5±3 : Closed with the light control SW at TAIL or HEAD position
D6 DAYTIME RUNNING LIGHT RELAY (MAIN)
2±GROUND : Approx. 12 volts with the ignition SW at ON position
5, 7,17±GROUND : Approx. 12 volts with the light control SW at HEAD position or the dimmer SW at FLASH position
Approx. 12 volts with the engine running and the parking brake lever is released
(Parking brake SW off)
6,15±GROUND : Always approx. 12 volts
8±GROUND : Continuity with the parking brake lever pulled up
11±GROUND :13.9±15.1 volts with the engine running at 2000 rpm 25°C (77°F)
12±GROUND : Approx. 12 volts with the high beam light up
13±GROUND : Always continuity
16±GROUND : Continuity with the dimmer SW at HIGH or FLASH position
18±GROUND : Continuity with the brake fluid level not enough
: PARTS LOCATION
CodeSee PageCodeSee PageCodeSee Page
A4030F6C26 (1MZ±FE)J131
B226 (1MZ±FE)F6C28 (5S±FE)J231B228 (5S±FE)F9F26 (1MZ±FE)J431
C9B30F9F28 (5S±FE)J531
C10C30G226 (1MZ±FE)J731
C1330G228 (5S±FE)J1131
D226 (1MZ±FE)H126 (1MZ±FE)J27A31D228 (5S±FE)H128 (5S±FE)J28B31
D630H226 (1MZ±FE)P331
F4A26 (1MZ±FE)H228 (5S±FE)F4A28 (5S±FE)I1730
SERVICE HINTS

HEADLIGHT (w/ DAYTIME RUNNING LIGHT)
: RELAY BLOCKS
CodeSee PageRelay Blocks (Relay Block Location)
224Engine Room R/B No.2 (Near the Battery)
: JUNCTION BLOCK AND WIRE HARNESS CONNECTOR
CodeSee PageJunction Block and Wire Harness (Connector Location)
1B20Cowl Wire and Instrument Panel J/B (Lower Finish Panel)1C20Cowl Wire and Instrument Panel J/B (Lower Finish Panel)
1D20Instrument Panel Wire and Instrument Panel J/B (Lower Finish Panel)
1J
1V20Cowl Wire and Instrument Panel J/B (Lower Finish Panel)
1W
()
2B22Engine Room Main Wire and Engine Room J/B No 2 (Engine Compartment Left)2G22Engine Room Main Wire and Engine Room J/B No.2 (Engine Compartment Left)
2J22Cowl Wire and Engine Room J/B No 2 (Engine Compartment Left)2K22Cowl 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)
EB136 (1MZ±FE)Cowl Wire and Engine Room Main Wire (Under the Engine Room J/B No 2)EB138 (5S±FE)Cowl Wire and Engine Room Main Wire (Under the Engine Room J/B No.2)
IG140Instrument Panel Wire and Cowl Wire (Lower Finish Panel)IG240Instrument Panel Wire and Cowl Wire (Lower Finish Panel)
: GROUND POINTS
CodeSee PageGround Points Location
EB36 (1MZ±FE)Left Radiator Side SupportEB38 (5S±FE)Left Radiator Side Support
IF40Left Kick Panel
IG40Instrument Panel Brace LH
: SPLICE POINTS
CodeSee PageWire Harness with Splice PointsCodeSee PageWire Harness with Splice Points
E336 (1MZ±FE)Cowl WireE338 (5S±FE)Cowl Wire

LIGHT AUTO TURN OFF
A 1C 1F1F2 E 37. 5A
DOME FROM POWER SOURCE SYSTEM (
SEE PAGE 50)
2J 12
1W 1 23 15
1C 6 1B 4
C 2
IG 1J 71J8
OFF
TAI L
HEAD
LIGHT
CONTROL SW
C 1C4
11S 7
16 A
6 10
AA A71 AB±G
B±R
B±RB
B±R
G± R G±R
R R±GR±Y W±BW±B
W±B
G
JUNCTION
CONNECTOR J11
JUNCTION
CONNECTOR J 7DOOR COURTESY SW
FRONT L H D12 JUNCTION
CONNECTOR J 2
COMBINATION SW C13 FUSIBLE LINK BLOCK
INTEGRATION RELAY B
TAILLIGHT
RELAY10A
GAU GE
BATTERY13 14
FL MA IN
3. 0L* 3 : TMC MADE
* 4 : TMMK MADE
100A
ALT
C F 4 A , F 6 F, F 9
I17 C * 1 : W/O DAYTIME RUNNING LIGHT
* 2 : W/ DAY TIME RUNNING LIGHT40A
MAIN
2 12B 3
32 41
2K 8
C 3B
B BB
H
R±BR
H±LP
R±B R±BR±B
JUNCTION
CONNECTOR J 1
HEAD
RELAY
JUNCTION
CONNECTOR J3 2
(
*1)
(
*2)
(
*2)
(
*2)
(
*1)B 19(
*4) A 6(
*3)
B 2(
*4) A 5(
*3)
B D 6 , A
DAYTIME RUNNING
LIGHT RELAY (
MAIN)
TA ILB 16
T
B 17
G± Y
G±R
(
*2 *4)
(
*2 *4)(
EXCEPT * 2 * 4)

With the ignition SW turned on, the current flows to TERMINAL 7 of the integration relay through GAUGE fuse.
Voltage is applied at all times to TERMINAL (C) 2 of the integration relay through the taillight relay coil side, and to
TERMINAL (C) 3 through the HEAD relay coil side (w/o daytime running light) or through the daytime running light relay
(Main) (w/ daytime running light).
1. NORMAL LIGHTING OPERATION

With the light control SW turned to TAIL position, a signal is input into TERMINAL (C) 1 of the integration relay. Due to this
signal, the current flowing to TERMINAL (C) 2 of the relay flows to TERMINAL (C) 1 to TERMINAL 14 of the light control SW
to TERMINAL 16 to GROUND, and taillight relay causes taillights to turn on.

With the light control SW turned to HEAD position, a signal is input into TERMINALS (C) 1 and (C) 4 of the integration relay.
Due to this signal, the current flowing to TERMINAL (C) 3 of the relay flows to TERMINAL (C) 4 to TERMINAL 13 of the light
control SW to TERMINAL 16 to GROUND in the headlight circuit, and causes taillight and HEAD relay to turn the lights on.
The taillight circuit is same as above.
2. LIGHT AUTO TURN OFF OPERATION
With light on and ignition SW turned off (Input signal goes to TERMINAL 7 of the relay), when the driver's door is opened
(Input signal goes to TERMINAL 6 of the relay), the relay operates and the current is cut off which flows from TERMINAL (C)
2 of the relay to TERMINAL (C) 1 In taillight circuit and from TERMINAL (C) 3 to TERMINAL (C) 4 in headlight circuit.
As a result, all lights are turned off automatically.
HEAD RELAY [ENGINE ROOM J/B NO.2]
2±1 : Closed with the light control SW at HEAD position or the dimmer SW at FLASH position
Closed with the engine running and the parking brake lever released (w/ daytime running light)
TAILLIGHT RELAY [INSTRUMENT PANEL J/B]
3±5 : Closed with the light control SW at TAIL or HEAD position
D12 DOOR COURTESY SW FRONT LH
1±GROUND : Continuity with the front LH door open
I17 (C)
INTEGRATION RELAY
7±GROUND : Approx. 12 volts with the ignition SW at ON position
6±GROUND : Continuity with the front LH door open
1±GROUND : Always approx. 12 volts
10±GROUND : Always continuity
(C) 2±GROUND : Always approx. 12 volts
(C) 3±GROUND : Always approx. 12 volts
(C) 4±GROUND : Continuity with the light control SW at HEAD position
(C) 1±GROUND : Continuity with the light control SW at TAIL or HEAD position
: PARTS LOCATION
CodeSee PageCodeSee PageCodeSee Page
C1330F6C26 (1MZ±FE)J231
D6A30F6C28 (5S±FE)J731D6B30F9F26 (1MZ±FE)J1131
D1232F9F28 (5S±FE)J3231
F4A26 (1MZ±FE)I17C30F4A28 (5S±FE)J131
SYSTEM OUTLINE
SERVICE HINTS

2 1
10 11
1111 1W 11F51S91G81M21M11F21H11 1F61S12 1G41S7 1J 7
A 8
B DA E A E
IN2 8IN26 2 1 126 10
R±W R±W R R R W± B
R±W
G±R
R±W R
R
R±Y
R
G± R
R±W
R±W
R±W
R±W
R±W
R±G
R±G R±G
R±G R±GR±W R±W
R±G R±W
E EINTEGRATION RELAYA
JUNCTION
CONNECTOR
I15
IGNITION KEY
CYLINDER LIGHTJUNCTION
CONNECTOR
OPEN DOOR
WARNING LIGHT
[COMB. METER]
DIODE
(
COURTESY) J16
C 9
D 7(
W/ FADE OUT)
(
W/O FADE OUT)
(
W/ FADE OUT)
(
W/O FADE OUT)
DOOR COURTESY SW
FRONT LH
DOOR COURTESY SW
FRONT RH DOOR COURTESY SW
REAR RH DOOR COURTESY SW
REAR LH D14
D15
D12
D13
* 1 : W/ MOON ROOF
* 2 : W/ O MOON ROOF
4
R2 1
DIODE
(
DOME) D10
AA D
A D
A DB 6(
*3)
(
*4) B , * 3 : W/O THEFT DETERRENT SYSTEM
* 4 : W/ THEFT DETERRENT SYSTEM
J3 3
JUNCTION
CONNECTORB A, J34
I18
J33

INTERIOR LIGHT
I18 (A), (B) INTEGRATION RELAY
1±GROUND : Always approx. 12 volts
4±GROUND : Continuity with the one of each door (Front LH, RH, rear LH and RH) open
6±GROUND : Continuity with the front LH door open
10±GROUND : Always continuity
D12, D13, D14, D15 DOOR COURTESY SW FRONT LH, RH, REAR LH, RH
1±GROUND : Closed with the door open
L6 LUGGAGE COMPARTMENT LIGHT SW
1±GROUND : Closed with the luggage compartment door open
: PARTS LOCATION
CodeSee PageCodeSee PageCodeSee Page
C930F4A28 (5S±FE)J33A31
C1632F6C26 (1MZ±FE)J34B31
D730F6C28 (5S±FE)L332
D1030I1530L532
D1232I18A30L632
D1332I18B30P533
D1432I1932V833
D1532J1131V933
F4A26 (1MZ±FE)J1631
: JUNCTION BLOCK AND WIRE HARNESS CONNECTOR
CodeSee PageJunction Block and Wire Harness (Connector Location)
1F20Roof Wire and Instrument Panel J/B (Lower Finish Panel)
1G20Instrument Panel Wire and Instrument Panel J/B (Lower Finish Panel)1H20Instrument Panel Wire and Instrument Panel J/B (Lower Finish Panel)
1J20Cowl Wire and Instrument Panel J/B (Lower Finish Panel)1M20Cowl Wire and Instrument Panel J/B (Lower Finish Panel)
1S20Floor Wire and Instrument Panel J/B (Lower Finish Panel)
1V20Cowl Wire and Instrument Panel J/B (Lower Finish Panel)1W20Cowl Wire and Instrument Panel J/B (Lower Finish Panel)
2A22Engine Room Main Wire and Engine Room J/B No.2 (Engine Compartment Left)
2J22Cowl 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)
IN242Floor No.2 Wire and Instrument Panel Wire (Right Kick Panel)
: GROUND POINTS
CodeSee PageGround Points Location
IE40Cowl Side Panel LH
IG40Instrument Panel Brace LH
BM44Roof Left
: SPLICE POINTS
CodeSee PageWire Harness with Splice PointsCodeSee PageWire Harness with Splice Points
B144Roof WireB344Roof Wire
B244Roof WireB544Floor Wire
SERVICE HINTS

ILLUMINATION
1B 41C61J4
IG1H 41V 61 2
3 4
7 6
2 1
1614 2G
B
G±R B± G
G
B
B
B B
TAILLIGHT
RELAY7. 5A
PANEL
INTEGRATION
RELAY
FL MAIN
3. 0W
BA TTERY
OFF
TAI L
HEAD
LIGHT
CONTROL
SW
G
I17 3 2 15
F 1
A 1100A ALT
2 6A BA B
B BB B B B B B B B
B ABABABA
A AAA A A
1J 8
1J 7 A
A E 3
F 2A
1 A
B±R B±R
B±R
G±R
COMBINATION SW C13
A
W±B
W± B W± B
J UNCTION
CONNECTOR J 7
JUNCTION
CONNECTOR J11
B
B BG
G G
G G
G G
G G
JUNCTION
CONNECTOR J 2
B
ASHTRAY ILLUMINATION A24BLOWER SW B 5A/C SW A14 CIGARETTE LIGHTER ILLUMINATION C 5REAR WINDOW
DEFOGGER S W R 5
G 1D 5
G
J13
JUNCTION CONNECTORB A, J14
J13
JUNCTION
CONNECTORB A, J14 17 16 G±R
(
*5)
G±Y
(
*5)
(
*6)
DAYTIME RUNNING
LIGHT RELAY (
MAIN) D 6
(
*4) (
*4)
(
*4)
(
*4)(
*4) (
*4) F 4
FUSIBLE LINK BLOCKF A, F 9
2 12A/C CONTROL ASSEMBLY A34
G
(
*3) B
(
*3)

ILLUMINATION
TAILLIGHT RELAY [INSTRUMENT PANEL J/B]
5±3 : Closed with the light control SW at TAIL or HEAD position
C13 COMBINATION SW
14±16 : Closed with the light control SW at TAIL or HEAD position
: PARTS LOCATION
CodeSee PageCodeSee PageCodeSee Page
A1430F9F28 (5S±FE)J17B31
A2430G330J30A31
A3430H730J31B31
B530I730O231
C530J231R2B31
C1030J531R3A31
C1330J731R4C31
D630J1131R531
F4A26 (1MZ±FE)J13A31R731F4A28 (5S±FE)J14B31
F9F26 (1MZ±FE)J16A31
: JUNCTION BLOCK AND WIRE HARNESS CONNECTOR
CodeSee PageJunction Block and Wire Harness (Connector Location)
1B20Cowl Wire and Instrument Panel J/B (Lower Finish Panel)1C20Cowl Wire and Instrument Panel J/B (Lower Finish Panel)
1D20Instrument Panel Wire and Instrument Panel J/B (Lower Finish Panel)1H20Instrument Panel Wire and Instrument Panel J/B (Lower Finish Panel)
1J20Cowl Wire and Instrument Panel J/B (Lower Finish Panel)1V20Cowl 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)
IH140Instrument Panel Wire and Instrument Panel No 2 Wire (Instrument Panel Brace RH)IH240Instrument Panel Wire and Instrument Panel No.2 Wire (Instrument Panel Brace RH)
: GROUND POINTS
CodeSee PageGround Points Location
IF40Left Kick Panel
IG40Instrument Panel Brace LH
: SPLICE POINTS
CodeSee PageWire Harness with Splice PointsCodeSee PageWire Harness with Splice Points
E336 (1MZ±FE)Cowl WireE338 (5S±FE)Cowl Wire
SERVICE HINTS