1994 TOYOTA CAMRY main relay

106
HEADLIGHT (FOR CANADA)
13
11 9 OFF
TA I L
HE AD
LOW
HIGH
FL AS H
LIGHT
CONTROL
SW DIMME R SW
COMBINATION SW
I5I7 I7
EF1 4
IE12 214 5 15
16 4
13
2W
B
W
R±B
G±R
R±B B
R±B
L±Y L±Y R±BG R±Y W±B
W±B W±B
R±YB B
BW W
INTEGRATION RELAY
DAYTIME RUNNING LIGHT RELAY
(
MAIN) FL MA IN
2. 0L
BATTERY
100A ALT
I13
D4 C12
FUSE BOX
I5
W±B
B 1A 1
C 2G±R
W±B W±B (
1MZ±FE)
(
5S±FE)B F10 , F10AC,F16
3A 93B 11
2G 72E1
2G 3
R±B
W
15A
ECU±B HEADLIGHT
RELAY 2H2
31 42
40A
MAIN

107
55 5
IG 11ED1 8
II1 4A 11 8 18 1332
2171
AEC16
DA YTIME
RUNNING LIGHT
RE LA Y NO. 2 W
B
WB
WBR±LW
W±B
R±LR R± R±L
G±R
R Y
R±W R±W
R±W R±W
R±Y R±Y
W±B W±B W±BTO GE NE RATOR
(
ALTERNATOR)
ºLº
FROM
COMBINATION METER
DAYTIME RUNNING
LIGHT RELAY(
MAIN)
JUNCTION
CONNE CTOR
PARKING
BRAKE SW PARKING
BRAKE SW
(
1MZ±FE)
D4
P3 P2
J1 (
5S±FE)
G±R
W±B
1B 81E 4
TA I LL I GHT
RE LA Y
23 151B 710A
GAUGE
L
3A 183A 17
3C 8 3D 83A 103C 18
1M 13A 12
1C 11
FROM POWER SOURCE
SYSTEM(
SEEPAGE64)

109
CURRENT FROM THE BATTERY IS ALWAYS FLOWING FROM THE FL MAIN " HEADLIGHT RELAY (COIL SIDE) " TERMINAL 5 OF THE
DAYTIME RUNNING LIGHT RELAY (MAIN) AND TERMINAL 14 OF THE DIMMER SW, HEADLIGHT RELAY (COIL SIDE) " TERMINAL 3 OF
THE INTEGRATION RELAY " TERMINAL 4 " TERMINAL 13 OF THE LIGHT CONTROL SW, FL MAIN " DAYTIME RUNNING LIGHT
RELAY NO. 2 (COIL SIDE) " TERMINAL 17 OF THE DAYTIME RUNNING LIGHT RELAY.
1. DAYTIME RUNNING LIGHT OPERATION
WHEN THE ENGINE IS STARTED, VOLTAGE GENERATED AT TERMINAL L OF THE GENERATOR (ALTERNATOR) IS APPLIED TO
TERMINAL 11 OF THE DAYTIME RUNNING LIGHT RELAY (MAIN).
IF THE PARKING BRAKE LEVER IS PULLED UP (PARKING BRAKE SW ON) AT THIS TIME, THE RELAY IS NOT ENERGIZED, SO THE
DAYTIME RUNNING LIGHT SYSTEM DOES NOT OPERATE. IF THE PARKING BRAKE LEVER IS RELEASED (PARKING BRAKE LEVER
SW OFF), THE SIGNAL IS INPUT TO TERMINAL 8 OF THE RELAY. THIS ACTIVATES THE RELAY ALSO, CURRENT FROM FL MAIN
FLOWES TO DAYTIME RUNNING LIGHT RELAY NO. 2 (POINT SIDE) " HEAD (UPR±LH) FUSE " TERMINAL 1 OF THE HEAD LH±HI "
TERMINAL 2 " TERMINAL 2 OF THE HEAD RH±HI " TERMINAL 1 " TERMINAL 4 OF THE DAYTIME RUNNING LIGHT RELAY NO. 3 "
TERMINAL 2 " TO GROUND, SO BOTH TAIL AND HEADLIGHT UP.
THIS IS HOW THE DAYTIME RUNNING LIGHT SYSTEM OPERATES. ONCE THE DAYTIME RUNNING LIGHT SYSTEM OPERATES AND
HEAD HAVE LIGHT UP, HEAD REMAIN ON EVEN IF THE PARKING BRAKE LEVER IS PULLED UP (PARKING BRAKE SW ON).
EVEN IF THE ENGINE STALLS WITH THE IGNITION SW ON AND THERE IS NO VOLTAGE FROM TERMINAL L OF THE GENERATOR
(ALTERNATOR), HEAD REMAIN ON. IF THE IGNITION SW IS THEN TURNED OFF, AND HEAD ARE TURNED OFF.
IF THE ENGINE IS STARTED WHILE THE PARKING BRAKE LEVER IS RELEASED (PARKING BRAKE SW OFF), THE DAYTIME RUNNING
LIGHT SYSTEM OPERATES AND TAIL, HEADLIGHT UP AS THE ENGINE STARTS.
2. HEADLIGHT OPERATION
*(WHEN THE LIGHT CONTROL SW AT THE HEAD POSITION)
WHEN THE LIGHT CONTROL SW IS SET TO HEAD POSITION, THE CURRENT FLOWING TO THE HEADLIGHT RELAY (COIL SIDE)
FLOWS TO TERMINAL 3 OF THE INTEGRATION RELAY " TERMINAL 4 " TERMINAL 13 OF THE LIGHT CONTROL SW " TERMINAL 11
" GROUND, TURNING THE HEADLIGHT RELAY ON.
THIS CAUSES THE CURRENT FLOWING TO THE HEADLIGHT RELAY (POINT SIDE) " DRL FUSE " DAYTIME RUNNING LIGHT RELAY
NO. 3 (COIL SIDE) AND DAYTIME RUNNING LIGHT RELAY NO. 4 (COIL SIDE) " GROUND, TURNING THE DAYTIME RUNNING LIGHT
RELAY NO. 3 AND NO. 4 ON. ALSO, CURRENT FROM THE HEADLIGHT RELAY (POINT SIDE) TO HEAD (LWR) FUSES " TERMINAL 1
OF THE HEADLIGHTS (LO) " TERMINAL 2 " GROUND, SO THE HEADLIGHTS (LO) LIGHT UP.
*(DIMMER SW AT FLASH POSITION)
WHEN THE DIMMER SW IS SET TO FLASH POSITION, CURRENT FLOWS FROM HEADLIGHT RELAY (COIL SIDE) " TERMINAL 14 OF
THE DIMMER SW " TERMINAL 9 " GROUND, TURNING THE HEADLIGHT RELAY ON. AT THE SAME TIME, SIGNALS ARE OUTPUT
FROM TERMINAL 12 AND TERMINAL 14 OF THE DIMMER SW TO TERMINAL 16 AND TERMINAL 5 OF THE DAYTIME RUNNING LIGHT
RELAY (MAIN), ACTIVATING THE DAYTIME RUNNING LIGHT RELAY (MAIN) AND ALSO THE DAYTIME RUNNING LIGHT RELAY NO. 2.
WHEN THE HEADLIGHT RELAY AND DAYTIME RUNNING LIGHT RELAY (MAIN) ARE ACTIVATED, THE HEADLIGHTS (LO AND HI) THEN
LIGHT UP.
*(DIMMER SW AT HIGH POSITION)
WHEN THE LIGHT CONTROL SW IS SET TO HEAD POSITION, A SIGNAL IS OUTPUT FROM TERMINAL 13 OF THE LIGHT CONTROL SW
" TERMINAL 4 OF THE INTEGRATION RELAY " TERMINAL 3 " TERMINAL 5 OF THE DAYTIME RUNNING LIGHT RELAY (MAIN).
WHEN THE DIMMER SW IS SET TO HIGH POSITION, A SIGNAL IS OUTPUT FROM TERMINAL 12 OF THE DIMMER SW TO TERMINAL 16
OF THE DAYTIME RUNNING LIGHT RELAY (MAIN). THESE SIGNALS ACTIVATE DAYTIME RUNNING LIGHT RELAY NO. 2, SO CURRENT
FLOWS FROM DAYTIME RUNNING LIGHT RELAY NO. 2 (POINT SIDE) " HEAD (UPR±LH) FUSE " TERMINAL 1 OF THE HEADLIGHT
LH±HI " TERMINAL 2 " DAYTIME RUNNING LIGHT RELAY NO. 4 (POINT SIDE) " GROUND, AND CURRENT ALSO SIMUTANEOUSLY
FLOWS FROM HEAD (UPR±RH) FUSE " DAYTIME RUNNING LIGHT RELAY NO. 3 (POINT SIDE) " TERMINAL 1 OF THE HEADLIGHT
RH±HI " TERMINAL 2 " DAYTIME RUNNING LIGHT RELAY NO. 4 (POINT SIDE), CAUSING THE HEADLIGHTS (HI SIDE) TO LIGHT UP.
D 4 DAYTIME RUNNING LIGHT RELAY (MAIN)
2±GROUND : APPROX. 12 VOLTS WITH THE IGNITION SW AT ON POSITION
15±GROUND : ALWAYS APPROX. 12 VOLTS
8±GROUND : CONTINUITY WITH THE PARKING BRAKE LEVER PULLED UP (PARKING BRAKE SW ON)
13±GROUND : ALWAYS CONTINUITY
SYSTEM OUTLINE
SERVICE HINTS

11 0
HEADLIGHT (FOR CANADA)
: PARTS LOCATION
CODESEE PAGECODESEE PAGECODESEE PAGE
C 932F16C28 (1MZ±FE), 30 (5S±FE)I1333
C1232H 128 (1MZ±FE), 30 (5S±FE)J 133
D 432H 228 (1MZ±FE), 30 (5S±FE)P 233
F10A28 (1MZ±FE), 30 (5S±FE)H 328 (1MZ±FE), 30 (5S±FE)P 333F10B28 (1MZ±FE), 30 (5S±FE)H 428 (1MZ±FE), 30 (5S±FE)
: JUNCTION BLOCK AND WIRE HARNESS CONNECTOR
CODESEE PAGEJUNCTION BLOCK AND WIRE HARNESS (CONNECTOR LOCATION)
1B
1C
1D20COWL WIRE AND J/B NO. 1 (INSTRUMENT PANEL LEFT)
1E
20COWL WIRE AND J/B NO. 1 (INSTRUMENT PANEL LEFT)
1M
2A22ENGINE ROOM MAIN WIRE AND J/B NO 2 (ENGINE COMPARTMENT LEFT)2E22ENGINE ROOM MAIN WIRE AND J/B NO. 2 (ENGINE COMPARTMENT LEFT)
2G22COWL WIRE AND J/B NO. 2 (ENGINE COMPARTMENT LEFT)
2H22ENGINE WIRE AND J/B NO. 2 (ENGINE COMPARTMENT LEFT)
3A
3B24COWL WIRE AND J/B NO 3 (BEHIND COMBINATION METER)3C24COWL WIRE AND J/B NO. 3 (BEHIND COMBINATION METER)
3D
: CONNECTOR JOINING WIRE HARNESS AND WIRE HARNESS
CODESEE PAGEJOINING WIRE HARNESS AND WIRE HARNESS (CONNECTOR LOCATION)
EB138 (1MZ±FE)ENGINE ROOM MAIN WIRE AND RELAY WIREEB140 (5S±FE)ENGINE ROOM MAIN WIRE AND RELAY WIRE
EC138 (1MZ±FE)ENGINE WIRE AND ENGINE ROOM MAIN WIREEC140 (5S±FE)ENGINE WIRE AND ENGINE ROOM MAIN WIRE
ED138 (1MZ±FE)COWL WIRE AND ENGINE ROOM MAIN WIREED140 (5S±FE)COWL WIRE AND ENGINE ROOM MAIN WIRE
EF138 (1MZ±FE)ENGINE WIRE AND COWL WIREEF140 (5S±FE)ENGINE WIRE AND COWL WIRE
II142COWL WIRE AND INSTRUMENT PANEL WIRE
: GROUND POINTS
CODESEE PAGEGROUND POINTS LOCATION
EB38 (1MZ±FE)FRONT LEFT FENDEREB40 (5S±FE)FRONT LEFT FENDER
IE42LEFT KICK PANEL
IG42INSTRUMENT PANEL BRACE LH
: SPLICE POINTS
CODESEE PAGEWIRE HARNESS WITH SPLICE POINTSCODESEE PAGEWIRE HARNESS WITH SPLICE POINTS
E338 (1MZ±FE)E 640 (5S±FE)E 340 (5S±FE)E738 (1MZ±FE)ENGINE ROOM MAIN WIRE
E438 (1MZ±FE)ENGINE ROOM MAIN WIREE 740 (5S±FE)
ENGINE ROOM MAIN WIRE
E 440 (5S±FE)
ENGINE ROOM MAIN WIRE
I 544COWL WIREE 638 (1MZ±FE)I 744COWL WIRE

11 2
LIGHT AUTO TURN OFF*1 : 1MZ±FE
*
2 : 5S±FE
1
IE IG OFF
TAIL
HE AD A 2A3
A 1A4
LIGHT
CONTROL SW
11213 7WB
G±R
R±B
R G
R±Y R±GB
B
W±B
W±B
10A
GAUGE
Q
Q S
R R
S
DOOR COURTESY SW
FRONT L H
100A ALT
BATTERY FL MAIN
2. 0L
W
FROM POWER SOURCE SYSTEM(
SEE PAGE 64)
FUSE B OX
D12COMBINATION SW C12 FROM POWER SOURCE SYSTE
(
SEE PAGE 64)
2X X X
X
1113
1
1
I13A
1234C12
B
F10
C F16A
F10 (
*1)
(
*2) EF1 1
B 1A 1
C 1(
*1)
(
*2)
B F1 0 , F1 0
AC,F16
BLACK
I13A
INTEGRATION RELAY1 D12
1M 1101H 26
1C 1
1
M1E 4
1B 8TAILLIGHT
RELAY 15
3 2
TO TAIL
FUSE2H 2
2G 72G2
HEADLIGHT
RELAY
20A
DOME
42
31
TO HEAD
FUSE

11 5
TURN SIGNAL FLASHER
(1) 2±GROUND : APPROX. 12 VOLTS WITH IGNITION SW ON OR HAZARD SW ON
(1) 1±GROUND : CHANGES FROM APPROX. 12 TO 0 VOLTS WITH IGNITION SW ON AND TURN SIGNAL SW LEFT OR RIGHT, OR
HAZARD SW ON
(1) 3±GROUND: ALWAYS CONTINUITY
: PARTS LOCATION
CODESEE PAGECODESEE PAGECODESEE PAGE
C 832F 828 (1MZ±FE), 30 (5S±FE)R 834 (S/D), 35 (C/P)
C1232H 733R1034 (S/D), 35 (C/P)
F 728 (1MZ±FE), 30 (5S±FE)J 133
: RELAY BLOCKS
CODESEE PAGERELAY BLOCKS (RELAY BLOCK LOCATION)
125R/B NO. 1 (LEFT KICK PANEL)
: JUNCTION BLOCK AND WIRE HARNESS CONNECTOR
CODESEE PAGEJUNCTION BLOCK AND WIRE HARNESS (CONNECTOR LOCATION)
1A20COWL WIRE AND J/B NO 1 (INSTRUMENT PANEL LEFT)1C20COWL WIRE AND J/B NO. 1 (INSTRUMENT PANEL LEFT)
1H20FLOOR NO. 1 WIRE J/B NO. 1 (INSTRUMENT PANEL LEFT)
1M20COWL WIRE AND J/B NO. 1 (INSTRUMENT PANEL LEFT)
2F22COWL WIRE AND J/B NO. 2 (ENGINE COMPARTMENT LEFT)
3C24COWL WIRE AND J/B NO 3 (BEHIND COMBINATION METER)3D24COWL WIRE AND J/B NO. 3 (BEHIND COMBINATION METER)
: CONNECTOR JOINING WIRE HARNESS AND WIRE HARNESS
CODESEE PAGEJOINING WIRE HARNESS AND WIRE HARNESS (CONNECTOR LOCATION)
ED138 (1MZ±FE)COWL WIRE AND ENGINE ROOM MAIN WIREED140 (5S±FE)COWL WIRE AND ENGINE ROOM MAIN WIRE
IJ142FLOOR NO. 1 WIRE AND COWL WIRE
BZ146 (S/D)LUGGAGE ROOM NO 1 WIRE AND FLOOR NO 1 WIREBZ148 (C/P)LUGGAGE ROOM NO. 1 WIRE AND FLOOR NO. 1 WIRE
: GROUND POINTS
CODESEE PAGEGROUND POINTS LOCATION
EA38 (1MZ±FE)FRONT RIGHT FENDEREA40 (5S±FE)FRONT RIGHT FENDER
EB38 (1MZ±FE)FRONT LEFT FENDEREB40 (5S±FE)FRONT LEFT FENDER
IE42LEFT KICK PANEL
IG42INSTRUMENT PANEL BRACE LH
BO46 (S/D)LEFT QUARTER PILLARBO48 (C/P)LEFT QUARTER PILLAR
: SPLICE POINTS
CODESEE PAGEWIRE HARNESS WITH SPLICE POINTSCODESEE PAGEWIRE HARNESS WITH SPLICE POINTS
I 744COWL WIREI1144COWL WIRE
SERVICE HINTS

11 9
TURN SIGNAL FLASHER
(1) 2±GROUND : APPROX. 12 VOLTS WITH IGNITION SW ON OR HAZARD SW ON
(1) 1±GROUND : CHANGES FROM APPROX. 12 TO 0 VOLTS WITH IGNITION SW ON AND TURN SIGNAL SW LEFT OR RIGHT,
OR HAZARD SW ON
(1) 3±GROUND: ALWAYS CONTINUITY
: PARTS LOCATION
CODESEE PAGECODESEE PAGECODESEE PAGE
C 832F 828 (1MZ±FE), 30 (5S±FE)J 536
C1232H 733R 836 (W/G)
F 728 (1MZ±FE), 30 (5S±FE)J 133R1036 (W/G)
: RELAY BLOCKS
CODESEE PAGERELAY BLOCKS (RELAY BLOCK LOCATION)
125R/B NO. 1 (LEFT KICK PANEL)
: JUNCTION BLOCK AND WIRE HARNESS CONNECTOR
CODESEE PAGEJUNCTION BLOCK AND WIRE HARNESS (CONNECTOR LOCATION)
1A20COWL WIRE AND J/B NO 1 (INSTRUMENT PANEL LEFT)1C20COWL WIRE AND J/B NO. 1 (INSTRUMENT PANEL LEFT)
1H20FLOOR NO. 1 WIRE J/B NO. 1 (INSTRUMENT PANEL LEFT)
1M20COWL WIRE AND J/B NO. 1 (INSTRUMENT PANEL LEFT)
2F22COWL WIRE AND J/B NO. 2 (ENGINE COMPARTMENT LEFT)
3C24COWL WIRE AND J/B NO 3 (BEHIND COMBINATION METER)3D24COWL WIRE AND J/B NO. 3 (BEHIND COMBINATION METER)
: CONNECTOR JOINING WIRE HARNESS AND WIRE HARNESS
CODESEE PAGEJOINING WIRE HARNESS AND WIRE HARNESS (CONNECTOR LOCATION)
ED138 (1MZ±FE)COWL WIRE AND ENGINE ROOM MAIN WIREED140 (5S±FE)COWL WIRE AND ENGINE ROOM MAIN WIRE
IJ142FLOOR NO. 1 WIRE AND COWL WIRE
Bb150 (W/G)LUGGAGE ROOM NO. 1 WIRE AND FLOOR NO. 1 WIRE
: GROUND POINTS
CODESEE PAGEGROUND POINTS LOCATION
EA38 (1MZ±FE)FRONT RIGHT FENDEREA40 (5S±FE)FRONT RIGHT FENDER
EB38 (1MZ±FE)FRONT LEFT FENDEREB40 (5S±FE)FRONT LEFT FENDER
IE42LEFT KICK PANEL
IG42INSTRUMENT PANEL BRACE LH
46 (S/D)
BL48 (C/P)UNDER THE LEFT QUARTER PILLARBL
50 (W/G)
UNDER THE LEFT QUARTER PILLAR
BQ50 (W/G)LOWER BACK PANEL CENTER
: SPLICE POINTS
CODESEE PAGEWIRE HARNESS WITH SPLICE POINTSCODESEE PAGEWIRE HARNESS WITH SPLICE POINTS
I 744COWL WIREI1144COWL WIRE
SERVICE HINTS

142
INTERIOR LIGHT (W/G w/o KEY ILLUMINATED ENTRY)
INTEGRATION RELAY
6±GROUND : APPROX. 12 VOLTS WITH DOOR CLOSED
0 VOLTS WITH EACH DOOR OPEN
D12, D13, D14, D15 DOOR COURTESY SW
1±GROUND : CLOSED WITH DOOR OPEN
L 4 LUGGAGE COMPARTMENT LIGHT SW
2±1 : CLOSED WITH LUGGAGE COMPARTMENT DOOR OPEN
: PARTS LOCATION
CODESEE PAGECODESEE PAGECODESEE PAGE
C 932D1436 (W/G)L 336 (W/G)
D 732D1536 (W/G)L 436 (W/G)
D 936 (W/G)I1133M 336 (W/G)
D1236 (W/G)I1436 (W/G)
D1336 (W/G)J 333
: JUNCTION BLOCK AND WIRE HARNESS CONNECTOR
CODESEE PAGEJUNCTION BLOCK AND WIRE HARNESS (CONNECTOR LOCATION)
1B20COWL WIRE AND J/B NO 1 (INSTRUMENT PANEL LEFT)1C20COWL WIRE AND J/B NO. 1 (INSTRUMENT PANEL LEFT)
1H20FLOOR NO. 1 WIRE J/B NO. 1 (INSTRUMENT PANEL LEFT)
1I20ROOF WIRE AND J/B NO. 1 (INSTRUMENT PANEL) TMC MADE1I20COWL WIRE AND J/B NO. 1 (INSTRUMENT PANEL) TMM MADE
1K20COWL WIRE AND J/B NO 1 (INSTRUMENT PANEL LEFT)1M20COWL WIRE AND J/B NO. 1 (INSTRUMENT PANEL LEFT)
2E22ENGINE ROOM MAIN WIRE AND J/B NO. 2 (ENGINE COMPARTMENT LEFT)
3A
3C24COWL WIRE AND J/B NO. 3 (BEHIND COMBINATION METER)
3D
24COWL WIRE AND J/B NO. 3 (BEHIND COMBINATION METER)
: CONNECTOR JOINING WIRE HARNESS AND WIRE HARNESS
CODESEE PAGEJOINING WIRE HARNESS AND WIRE HARNESS (CONNECTOR LOCATION)
IH142FRONT DOOR LH WIRE AND INSTRUMENT PANEL WIREIH242FRONT DOOR LH WIRE AND INSTRUMENT PANEL WIRE
II242INSTRUMENT PANEL WIRE AND COWL WIRE
IJ142FLOOR NO. 1 WIRE AND COWL WIRE
IT144FRONT DOOR RH WIRE AND INSTRUMENT PANEL WIREIT244FRONT DOOR RH WIRE AND INSTRUMENT PANEL WIRE
IU144FLOOR NO. 2 WIRE AND INSTRUMENT PANEL WIRE
IV144ROOF WIRE AND COWL WIRE
Bc250 (W/G)BACK DOOR NO 1 WIRE AND FLOOR NO 1 WIREBc350 (W/G)BACK DOOR NO. 1 WIRE AND FLOOR NO. 1 WIRE
Bd250 (W/G)BACK DOOR NO. 1 WIRE AND BACK DOOR NO. 2 WIRE
: GROUND POINTS
CODESEE PAGEGROUND POINTS LOCATION
IG42INSTRUMENT PANEL BRACE LH
BP50 (W/G)BACK PANEL CENTER
BR50 (W/G)BACK DOOR CENTER
: SPLICE POINTS
CODESEE PAGEWIRE HARNESS WITH SPLICE POINTSCODESEE PAGEWIRE HARNESS WITH SPLICE POINTS
I 844INSTRUMENT PANEL WIREB3550 (W/G)FLOOR NO. 1 WIRE
B3350 (W/G)ROOF WIREB3950 (W/G)BACK DOOR NO. 1 WIRE
SERVICE HINTS