1994 TOYOTA CAMRY Head

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 3
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 (A) 2 OF THE INTEGRATION RELAY THROUGH THE TAILLIGHT RELAY (COIL SIDE),
AND TO TERMINAL (A) 3 THROUGH THE HEADLIGHT RELAY (COIL SIDE).
1. NORMAL LIGHTING OPERATION
(TURN TAILLIGHT ON)
WITH LIGHT CONTROL SW TURNED TO TAILLIGHT POSITION, A SIGNAL IS INPUT INTO TERMINAL (A) 1 OF THE INTEGRATION
RELAY. ACCORDING TO THIS SIGNAL, THE CURRENT FLOWING TO TERMINAL (A) 2 OF THE RELAY FLOWS FROM TERMINAL (A) 1 "
TERMINAL 2 OF THE LIGHT CONTROL SW " TERMINAL 11 " TO GROUND AND TAILLIGHT RELAY CAUSES TAILLIGHT TO TURN ON.
(TURN HEADLIGHT ON)
WITH LIGHT CONTROL SW TURNED TO HEADLIGHT POSITION, A SIGNAL IS INPUT INTO TERMINALS (A) 1 AND (A) 4 OF THE
INTEGRATION RELAY. ACCORDING TO THIS SIGNAL, THE CURRENT FLOWING TO TERMINAL (A) 3 OF THE RELAY FLOWS TO
TERMINAL (A) 4 " TERMINAL 13 OF THE LIGHT CONTROL SW " TERMINAL 11 " TO GROUND IN THE HEADLIGHT CIRCUIT, AND
CAUSES TAILLIGHT AND HEADLIGHT RELAY TO TURN THE LIGHT ON. THE TAILLIGHT CIRCUIT IS SAME AS ABOVE.
2. LIGHT AUTO TURN OFF OPERATION
WITH LIGHTS ON AND IGNITION SW TURNED OFF (INPUT SIGNAL GOES TO TERMINAL 7 OF THE RELAY), WHEN DOOR ON DRIVER'S
SIDE IS OPENED (INPUT SIGNAL GOES TO TERMINAL 6 OF THE RELAY), THE RELAY OPERATES AND THE CURRENT IS CUT OFF
WHICH FLOWS FROM TERMINAL (A) 2 OF THE RELAY TO TERMINAL (A) 1 IN TAILLIGHT CIRCUIT AND FROM TERMINAL (A) 3 TO
TERMINAL (A) 4 IN HEADLIGHT CIRCUIT. AS A RESULT, ALL LIGHTS ARE TURNED OFF AUTOMATICALLY.
I13 INTEGRATION RELAY
7±GROUND : APPROX. 12 VOLTS WITH IGNITION SW AT ON POSITION
1±GROUND : ALWAYS APPROX. 12 VOLTS
(A)3±GROUND : APPROX. 12 VOLTS WITH LIGHT CONTROL SW AT OFF OR TAIL POSITION
(A)2±GROUND : APPROX. 12 VOLTS WITH LIGHT CONTROL SW AT OFF POSITION
6±GROUND : CONTINUITY WITH FRONT LH DOOR OPEN
(A)4±GROUND : CONTINUITY WITH LIGHT CONTROL SW AT HEAD POSITION
(A)1±GROUND : CONTINUITY WITH LIGHT CONTROL SW AT TAIL OR HEAD POSITION
10±GROUND : ALWAYS CONTINUITY
: PARTS LOCATION
CODESEE PAGECODESEE PAGECODESEE PAGE
C1232F10A28 (1MZ±FE), 30 (5S±FE)F16C28 (1MZ±FE), 30 (5S±FE)
D1234 (S/D), 35 (C/P), 36 (W/G)F10B28 (1MZ±FE), 30 (5S±FE)I13A33
: JUNCTION BLOCK AND WIRE HARNESS CONNECTOR
CODESEE PAGEJUNCTION BLOCK AND WIRE HARNESS (CONNECTOR LOCATION)
1B
1C20COWL WIRE AND J/B NO. 1 (INSTRUMENT PANEL LEFT)
1E
20COWL 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)
2G22COWL WIRE AND J/B NO. 2 (ENGINE COMPARTMENT LEFT)
2H22ENGINE WIRE AND J/B NO. 2 (ENGINE COMPARTMENT LEFT)
: CONNECTOR JOINING WIRE HARNESS AND WIRE HARNESS
CODESEE PAGEJOINING WIRE HARNESS AND WIRE HARNESS (CONNECTOR LOCATION)
EF138 (1MZ±FE)ENGINE WIRE AND COWL WIREEF140 (5S±FE)ENGINE WIRE AND COWL WIRE
: GROUND POINTS
CODESEE PAGEGROUND POINTS LOCATION
IE42LEFT KICK PANEL
IG42INSTRUMENT PANEL BRACE LH
SYSTEM OUTLINE
SERVICE HINTS

126
ILLUMINATION
IEI9
I9
I12 3 2
2 1
1 2
4 5
11 1
2 2 EF1 4
100A ALT
G
B
G±R
W±BBWW
G
G
G
GG G B
B
B B
B B
INTEGRATION
RELAY
COMBINATION SW FL MAI N
2. 0L
BATTERY
HAZARD SW
ASHTRAY
ILLUMINATION
CIGARETTE LIGHTER
ILLUMINATION
REAR WINDOW
DEFOGGER SW
OFF
TAIL
HEAD
LIGHT
CONTROL
SW
G GG
I13
C12
H7
A1 8
C5
R5
I12
TO CLOCK
G G
B 1A 1
C 1(
1MZ±FE)
(
5S±FE)B F10 , F10AC,F16
FUSE BOX
1E 41B81D14 TAILLIGHT
RELAY15A
TAIL
3 2 15
3D 5
3C4
3D 93C20 3C21 3D21 3D 20
3D 13C 11 3D11

128
ILLUMINATION
TAILLIGHT RELAY
5±3 : CLOSED WITH LIGHT CONTROL SW AT TAIL OR HEAD POSITION (WHEN LIGHT AUTO TURN OFF SYSTEM IS OFF)
CLOSED WITH ENGINE RUNNING AND PARKING BRAKE LEVER RELEASED (CANADA)
R 7 RHEOSTAT
3±2 : APPROX. 12 VOLTS WITH RHEOSTAT FULLY TURNED COUNTERCLOCKWISE AND 0 VOLTS WITH FULLY TURNED CLOCKWISE
: PARTS LOCATION
CODESEE PAGECODESEE PAGECODESEE PAGE
A12B32E 632J 233
A1832F10A28 (1MZ±FE), 30 (5S±FE)O 533
B6A32F10B28 (1MZ±FE), 30 (5S±FE)R 2C33B 6B32F16C28 (1MZ±FE), 30 (5S±FE)R 3A33
C 532G 333R 4B33
C 8A32G 433R 533
C 9B32H 733R 733
C1132H 8A33
C1232I1333
: JUNCTION BLOCK AND WIRE HARNESS CONNECTOR
CODESEE PAGEJUNCTION BLOCK AND WIRE HARNESS (CONNECTOR LOCATION)
1B
1D20COWL WIRE AND J/B NO 1 (INSTRUMENT PANEL LEFT)1E20COWL WIRE AND J/B NO. 1 (INSTRUMENT PANEL LEFT)
1L
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)
EF138 (1MZ±FE)ENGINE WIRE AND COWL WIREEF140 (5S±FE)ENGINE WIRE AND COWL WIRE
II242INSTRUMENT PANEL WIRE AND COWL WIRE
IM142INSTRUMENT PANEL WIRE AND CONSOLE BOX WIREIM242INSTRUMENT PANEL WIRE AND CONSOLE BOX WIRE
IN142INSTRUMENT PANEL WIRE AND SWITCH WIRE
: GROUND POINTS
CODESEE PAGEGROUND POINTS LOCATION
IE42LEFT KICK PANELIF42LEFT KICK PANEL
: SPLICE POINTS
CODESEE PAGEWIRE HARNESS WITH SPLICE POINTSCODESEE PAGEWIRE HARNESS WITH SPLICE POINTS
I 9I1644INSTRUMENT PANEL WIREI1244COWL WIREI1744INSTRUMENT PANEL WIRE
I14
44COWL WIRE
SERVICE HINTS

144
TAILLIGHT (S/D, C/P)
EF1 4
1
11 2
2
2 1
2 1
2 1
2 1
E4 E4 E4 E4 ED1 3
IE EB EA
LIGHT
CONTROL SW
OFF
TAIL
HEAD
G G G G G
G
G
G W±B
W±B
W±B
W±B W±B
W±BW±BGG±RW W B100A ALT
G
FL MAIN
2. 0L
BATTERYINTEGRATION
RELAY
COMBINATION SW
W±B
FRONT CLEARANCE
LIGHT LH
FRONT SIDE
MARKER LH
FRONT CLEARANCE
LIGHT RH
FRONT SIDE
MARKER RH
G
BZ112
G
I13
F3
F5
F4
F6C12
FUSE B OX
B 1A 1(
1MZ±FE)
(
5S±FE)
C 1B F1 0 , F1 0
AC,F16
E4 G
3D 43D 5
1E 41B8TAILLIGHT
RE LAY15A
TAIL
1H7 23 151D 14

146
TAILLIGHT (S/D, C/P)
WHEN THE LIGHT CONTROL SW IS TURNED TO TAIL OR HEAD POSITION, THE CURRENT FLOWS TO TERMINAL 3 OF THE LIGHT
FAILURE SENSOR THROUGH THE TAIL FUSE.
WHEN THE IGNITION SW IS TURNED ON, THE 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.
TAILLIGHT DISCONNECTION WARNING
WHEN THE IGNITION SW ON AND THE LIGHT CONTROL SW TURNED TO TAIL OR HEAD POSITION, IF THE TAILLIGHT CIRCUIT IS
OPEN, THE LIGHT FAILURE SENSOR DETECTS THE FAILURE BY THE CHANGE IN CURRENT FLOWING FROM TERMINAL 3 OF THE
LIGHT FAILURE SENSOR TO TERMINAL 9 AND THE WARNING CIRCUIT OF THE LIGHT FAILURE SENSOR IS ACTIVATED.
AS A RESULT, THE CURRENT FLOWS FLOM TERMINAL 4 OF THE LIGHT FAILURE SENSOR " TERMINAL 11 " GROUND AND TURNS
THE REAR LIGHT WARNING LIGHT ON, WHICH REMAINS ON UNTIL THE LIGHT CONTROL SW IS TURNED OFF.
TAILLIGHT RELAY
1±4 : CLOSED WITH LIGHT CONTROL SW AT TAIL OR HEAD POSITION
L 2 LIGHT FAILURE SENSOR
4, 8±GROUND : APPROX. 12 VOLTS WITH IGNITION SW AT ON POSITION
3±GROUND : APPROX 12 VOLTS WITH LIGHT CONTROL SW AT TAIL OR HEAD POSITION
11±GROUND : ALWAYS CONTINUITY
: PARTS LOCATION
CODESEE PAGECODESEE PAGECODESEE PAGE
C 932F 628 (1MZ±FE), 30 (5S±FE)L 134 (S/D), 35 (C/P)
C1232F10A28 (1MZ±FE), 30 (5S±FE)L 234 (S/D), 35 (C/P)
D 432F10B28 (1MZ±FE), 30 (5S±FE)R 834 (S/D), 35 (C/P)
F 328 (1MZ±FE), 30 (5S±FE)F16C28 (1MZ±FE), 30 (5S±FE)R 934 (S/D), 35 (C/P)
F 428 (1MZ±FE), 30 (5S±FE)I1333R1034 (S/D), 35 (C/P)
F 528 (1MZ±FE), 30 (5S±FE)J 133R1134 (S/D), 35 (C/P)
: JUNCTION BLOCK AND WIRE HARNESS CONNECTOR
CODESEE PAGEJUNCTION BLOCK AND WIRE HARNESS (CONNECTOR LOCATION)
1B
1D20COWL WIRE AND J/B NO. 1 (INSTRUMENT PANEL LEFT)
1E
20COWL WIRE AND J/B NO. 1 (INSTRUMENT PANEL LEFT)
1H20FLOOR NO. 1 WIRE J/B NO. 1 (INSTRUMENT PANEL LEFT)
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
EF138 (1MZ±FE)ENGINE WIRE AND COWL WIREEF140 (5S±FE)ENGINE WIRE AND COWL 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
Ba146 (S/D)FLOOR NO 1 WIRE AND LUGGAGE ROOM NO 2 WIREBa146 (S/D)FLOOR NO. 1 WIRE AND LUGGAGE ROOM NO. 2 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
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
SYSTEM OUTLINE
SERVICE HINTS

148
TAILLIGHT (W/G)
EF1 4
1
11 2
2
2 1
2 1
2 1
2 1
E4 E4 E4 E4 ED1 3
IE EB EA
LIGHT
CONTROL SW
OFF
TAIL
HEAD
G G G G G
G
G
G W±B
W±B
W±B
W±B W±B
W±BW±BGG±RW W B100A ALT
G G
FL MA I N
2. 0L
BATTERYINTEGRATION
RELAY
COMBINATION SW
W±B
FRONT CLEARANCE
LIGHT LH
FRONT SIDE
MARKER LH
FRONT CLEARANCE
LIGHT RH
FRONT SIDE
MARKER RH
G
I13
F3
F5
F4
F6C12
FUSE BOX
B 1A 1
C 1B F10 , F10AC,F16
(
1MZ±FE)
(
5S±FE)
E43D 43D 5
1E 41B8
1D 14 TA I LL I GHT
RE LA Y15A
TA I L
1H7 23 15

150
TAILLIGHT (W/G)
WHEN THE LIGHT CONTROL SW IS TURNED TO TAIL OR HEAD POSITION, THE CURRENT FLOWS TO TERMINAL 3 OF THE LIGHT
FAILURE SENSOR THROUGH THE TAIL FUSE.
WHEN THE IGNITION SW IS TURNED ON, THE 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.
TAILLIGHT DISCONNECTION WARNING
WITH THE IGNITION SW ON AND THE LIGHT CONTROL SW TURNED TO TAIL OR HEAD POSITION, IF THE TAILLIGHT CIRCUIT IS
OPEN, THE LIGHT FAILURE SENSOR DETECTS THE FAILURE BY THE CHANGE IN CURRENT FLOWING FROM TERMINAL 3 OF THE
LIGHT FAILURE SENSOR TO TERMINAL 9 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 " TERMINAL 11 " GROUND AND TURNS
THE REAR LIGHT WARNING LIGHT ON, WHICH REMAINS ON UNTIL THE LIGHT CONTROL SW IS TURNED OFF.
TAILLIGHT RELAY
3±5 : CLOSED WITH LIGHT CONTROL SW AT TAIL OR HEAD POSITION
L 2 LIGHT FAILURE SENSOR
4, 8±GROUND : APPROX. 12 VOLTS WITH IGNITION SW AT ON POSITION
3±GROUND : APPROX 12 VOLTS WITH LIGHT CONTROL SW AT TAIL OR HEAD POSITION
11±GROUND : ALWAYS CONTINUITY
: PARTS LOCATION
CODESEE PAGECODESEE PAGECODESEE PAGE
C 932F10A28 (1MZ±FE), 30 (5S±FE)L 136 (W/G)
C1232F10B28 (1MZ±FE), 30 (5S±FE)L 236 (W/G)
F 328 (1MZ±FE), 30 (5S±FE)F16C28 (1MZ±FE), 30 (5S±FE)R 836 (W/G)
F 428 (1MZ±FE), 30 (5S±FE)I1333R 936 (W/G)
F 528 (1MZ±FE), 30 (5S±FE)J 133R1036 (W/G)
F 628 (1MZ±FE), 30 (5S±FE)J 536 (W/G)R1136 (W/G)
: JUNCTION BLOCK AND WIRE HARNESS CONNECTOR
CODESEE PAGEJUNCTION BLOCK AND WIRE HARNESS (CONNECTOR LOCATION)
1B
1D20COWL WIRE AND J/B NO. 1 (INSTRUMENT PANEL LEFT)
1E
20COWL WIRE AND J/B NO. 1 (INSTRUMENT PANEL LEFT)
1H20FLOOR NO. 1 WIRE J/B NO. 1 (INSTRUMENT PANEL LEFT)
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
EF138 (1MZ±FE)ENGINE WIRE AND COWL WIREEF140 (5S±FE)ENGINE WIRE AND COWL WIRE
IJ142FLOOR NO. 1 WIRE AND COWL WIRE
Bb150 (W/G)LUGGAGE ROOM NO. 1 WIRE AND FLOOR NO. 1 WIRE
Bc250 (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
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
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
BR50 (W/G)BACK DOOR CENTER
SYSTEM OUTLINE
SERVICE HINTS