Page 64 TOYOTA CAMRY 1994 XV10 / 4.G Wiring Diagrams Workshop Manual

241
RADIATOR FAN AND CONDENSER FAN (5S±FE)
: PARTS LOCATION
CODESEE PAGECODESEE PAGECODESEE PAGE
A 130E 530 (5S±FE)
A 230 (5S±FE)R 130 (5S±FE)
: RELAY BLOCKS
CODESEE PAGERELAY BLOCKS (RELAY BLOCK LOCATION)
526R/B NO. 5 (ENGINE COMPARTMENT LEFT)
: JUNCTION BLOCK AND WIRE HARNESS CONNECTOR
CODESEE PAGEJUNCTION BLOCK AND WIRE HARNESS (CONNECTOR LOCATION)
1A20COWL WIRE AND J/B NO. 1 (INSTRUMENT PANEL LEFT)
2B22ENGINE ROOM MAIN WIRE AND J/B NO 2 (ENGINE COMPARTMENT LEFT)2E22ENGINE ROOM MAIN WIRE AND J/B NO. 2 (ENGINE COMPARTMENT LEFT)
3A24COWL WIRE AND J/B NO 3 (BEHIND COMBINATION METER)3C24COWL 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)
EA140 (5S±FE)ENGINE ROOM MAIN WIRE AND ENGINE ROOM NO. 3 WIRE
: GROUND POINTS
CODESEE PAGEGROUND POINTS LOCATION
EB40 (5S±FE)FRONT LEFT FENDER
: SPLICE POINTS
CODESEE PAGEWIRE HARNESS WITH SPLICE POINTSCODESEE PAGEWIRE HARNESS WITH SPLICE POINTS
E 540 (5S±FE)ENGINE ROOM MAIN WIRE

242
RADIATOR FAN AND CONDENSER FAN (5S±FE)
2B 12E82B32E6
55 55
55 55 2G 6
2E5
1 2EA1 1
M
1 2M
1 2
E5 5
EB EB
W±B W±B B±R B±R L±B
B±R
L
B W±B
W±R R WB±O B±R
W±B W±B
L
B±R
BW±BW±B
B±W
OM POWER SOURCE SYSTEM(
SEE PAGE 64)
30A
RDI FAN
24 13
4
FROM A/C
MAGNETIC
CLUTCH RELAY RADIATOR
FAN RELAY
RADIATOR
FAN RELAY
NO. 2
RADIATOR
FAN RELAY
NO. 3
A/C SINGLE
PRESSURE SW
WATER
TEMP. SW
(
FOR COOLING
FA N)RADIATOR
FAN MOTORA/C CONDE NSE R
FAN MOTOR A1
A2
R1
E532 51 15 23
3 2
EA1 2
1A 7FR
15A
ECU±IG
3A 153C 16
2B 40A
CDS FAN
3

244
ELECTRONICALLY CONTROLLED HYDRAULIC COOLING FAN (1MZ±FE)
1212
2 3EC1 8
ECEB I18
IP2 7
42 310 9 816 5
6 I18
B±R B±R W±R
LLB
L L±W L±W
L±W
L±R L±R W±BL±YY Y±LBR BR
E SOL+ SOL± TH± TH+ HPIGB TAC IDL FROM POWER SOURCE SYSTEM(
SEEPAGE64)
TO COMBINATION
METERFROM THROTTLE
POSITION SENSOR
FROM ENGINE CONTROL MODULE
(
ENGINE AND ELECTRONIC
CONTROLLED TRANSMISSION ECU)
SOLENOID VALVE
(
FOR HYDRAULIC MOTOR)
ENGINE COOLANT
TEMP. SENSOR
(
WATER TEMP. SENSOR)
(
FOR COOLING FAN)DATA LINK
CONNECTOR 1
(
CHECK
CONNECTOR)A/C SINGLE
PRESSURE SW COOLING FAN ECU C14
S1
E5D1 A2 OPT
3A 153C 16
1A 715A
ECU±IG

245
THE COOLING FAN ECU RECEIVES VARIOUS SIGNAL, I.E., THE ENGINE RPM SIGNAL FROM THE IGNITER, COOLANT TEMPERATURE
SIGNAL FROM THE ENGINE COOLANT TEMP. SENSOR (WATER TEMP. SENSOR), A/C REFRIGERANT PRESSURE SIGNAL FROM A/C
SINGLE PRESSURE SW.
THE COOLING FAN ECU JUDGES THE ENGINE BASED ON SIGNALS FROM ABOVE MENTION, DRIVES THE SOLENOID VALVE AND
CONTROLS THE SPEED OF THE COOLING FAN STEPLESSLY
FAIL±SAFE FUNCTION
WHEN THE MALFANCTION IS DETECTED BY THE ENGINE COOLANT TEMP. SENSOR (WATER TEMP. SENSOR) OR SOLENOID VALVE,
THE FAIL±SAFE FUNCTION OF THE COOLING FAN ECU JUDGES THE SITUATION TO ALLOWS THE COOLING SYSTEM TO CONTINUE
OPERATION.
A 2 A/C SINGLE PRESSURE SW
2±3 : OPEN ABOVE APPROX. 15.58KG/CM2 (221.2PSI, 1527KPA)
CLOSED BELOW APPROX. 12.56 KG/CM2
(178.4PSI, 1231KPA)
C14 COOLING FAN ECU
1±GROUND : APPROX. 12 VOLTS WITH THE IGNITION SW ON
9±10 :2.5 VOLTS AT 20°C (68°F) AND IGNITION SW ON
1.2 VOLTS AT 80°C (176°F) AND IGNITION SW ON
8± 4 :10±14 VOLTS AT A/C PRESSURE SW ON (OPEN)
0±3 VOLTS AT A/C PRESSURE SW OFF (CLOSE)
4±GROUND : ALWAYS CONTINUITY
E 5 ENGINE COOLANT TEMP. SENSOR (WATER TEMP. SENSOR) (FOR COOLING FAN)
1±2 :1.5K
AT 80°C (176°F)
0.7K
AT 11 0°C (230°F)
: PARTS LOCATION
CODESEE PAGECODESEE PAGECODESEE PAGE
A 228D 128S 129
C1432E 530
: JUNCTION BLOCK AND WIRE HARNESS CONNECTOR
CODESEE PAGEJUNCTION BLOCK AND WIRE HARNESS (CONNECTOR LOCATION)
1A20COWL WIRE AND J/B NO. 1 (INSTRUMENT PANEL LEFT)
3A24COWL WIRE AND J/B NO 3 (BEHIND COMBINATION METER)3C24COWL 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)
EC138 (1MZ±FE)ENGINE WIRE AND ENGINE ROOM MAIN WIRE
IP244ENGINE WIRE AND COWL WIRE
: GROUND POINTS
CODESEE PAGEGROUND POINTS LOCATION
EB38 (1MZ±FE)FRONT LEFT FENDER
EC38 (1MZ±FE)INTAKE MANIFOLD RH
: SPLICE POINTS
CODESEE PAGEWIRE HARNESS WITH SPLICE POINTSCODESEE PAGEWIRE HARNESS WITH SPLICE POINTS
I1844ENGINE WIRE
2312
534
6X8 91012
12 A2 C14S1 E5BROWN GRAY BLACKD1BLACK
6
XX X
XX X XX
X
SYSTEM OUTLINE
SERVICE HINTS

246
AIR CONDITIONING (PUSH CONTROL SW TYPE)
C
623 43
C 251
12 C
1
2
4
7
5 44
444
M
1 2
IK1 1IK13IK 1 2 4
I7 I7
I12
I13
I14
I13
IG HI M5 M4 M3 M2 M1 LO OFFBLOWER SW IK1 5
IK1 4I5
1
IIW±B R±L R±L
B
L±W
L±W
W±B
W±B W±B W±B W±BW±B L±B L±OB±W
L±BB±R BW±B W±B
L
R±L R±L
R±L
R±LR±L
W±B
W±B
W±B L±O
B±WFROM POWER 64)
BLOWER RESISTOR HE ATE R
RE LA Y 40A
HEA TER
JUNCTION
CONNECTOR
HEATER CONTROL SWB
R±L
R±L
R±L
W±B FROM POWER SOURCE SYSTEM(
SEE PAGE 64)
BLOWER MOTOR B4
B5
B6
H8 J1
1 4
W±B
B
I21
B
I14
B±W
1B 610A
GAUGE S OURCE SY STE M(
SEE PAGE

250
AIR CONDITIONING (PUSH CONTROL SW TYPE)
: PARTS LOCATION
CODESEE PAGECODESEE PAGECODESEE PAGE
A 228 (1MZ±FE), 30 (5S±FE)A1732H 833
A 328 (1MZ±FE), 30 (5S±FE)B 432I 230 (5S±FE)
A1032B 532J 133
A1132B 632
A1632C1432
: RELAY BLOCKS
CODESEE PAGERELAY BLOCKS (RELAY BLOCK LOCATION)
425R/B NO. 4 (RIGHT KICK PANEL)
526R/B NO. 5 (ENGINE COMPARTMENT LEFT)
: JUNCTION BLOCK AND WIRE HARNESS CONNECTOR
CODESEE PAGEJUNCTION BLOCK AND WIRE HARNESS (CONNECTOR LOCATION)
1B20COWL WIRE AND J/B NO 1 (INSTRUMENT PANEL LEFT)1D20COWL WIRE AND J/B NO. 1 (INSTRUMENT PANEL LEFT)
: CONNECTOR JOINING WIRE HARNESS AND WIRE HARNESS
CODESEE PAGEJOINING WIRE HARNESS AND WIRE HARNESS (CONNECTOR LOCATION)
EC138 (1MZ±FE)ENGINE WIRE AND ENGINE ROOM MAIN WIREEC140 (5S±FE)ENGINE WIRE AND ENGINE ROOM MAIN WIRE
IK142COWL WIRE AND A/C SUB WIRE
IL142COWL WIRE AND SERVO MOTOR SUB WIRE
IP144ENGINE WIRE AND COWL WIREIP344ENGINE WIRE AND COWL WIRE
IR144ENGINE ROOM MAIN WIRE AND COWL WIRE
: GROUND POINTS
CODESEE PAGEGROUND POINTS LOCATION
IG42INSTRUMENT PANEL BRACE LH
II42RIGHT KICK PANEL
: SPLICE POINTS
CODESEE PAGEWIRE HARNESS WITH SPLICE POINTSCODESEE PAGEWIRE HARNESS WITH SPLICE POINTS
E638 (1MZ±FE)ENGINE ROOM MAIN WIREI12E 640 (5S±FE)ENGINE ROOM MAIN WIREI1344COWL WIREI 544COWL WIREI1444COWL WIRE
I 744COWL WIREI19

252
AIR CONDITIONING (LEVER CONTROL SW TYPE)
4 4
44 4
M
M
1
5 4 3 2 7 2 613
3584
145678 6 CC
I7
I12 I13
I14
I13
IG II251
2
43
IL1 7IL11
IL1 2IL1 3
IL1 4IL1 5 1 I5
IL1 6
1 HI M2 M1B
A 4
CONTROL
CIRCUIT
I14R±L R±L R±L
R±L
W±B W±B
W±B
W±BB R±L
B
B±WR±L
L
R±L
W±B W±B
R±Y
B±Y
L±B
R
G±W B±WL±W W±B
W±B W±B W±BW±B
L±O
L±B
L±R
L
L±WYL GBB W±B
L±W
40A
HEA TER
4
R±L
HEATER
RELAYJUNCTION
CONNECTOR
AIR VENT MODE CONTROL SERVO MOTOR
BLOWER RESISTOR
BLOWER
MOTOR
B±W
L±O
L±B
BLOWER SWAIR VENT MODE
CONTROL SW OFF FROM POWER SOURCE SYSTEM(
SEE PAGE 64)
DEF
F/D
FOOT
B/L
FACE
DEF
F/D
FOOT
B/L
FACE
FACE B/L FOOT F/D DE F LO B4B5
B6H8 A17 J1
IK1 1IK13IK12IK14 I21
B
1B 610A
GAUGE

254
AIR CONDITIONING (LEVER CONTROL SW TYPE)
CURRENT ALWAYS FLOWS FROM THE HEATER FUSE TO TERMINAL 5 OF THE HEATER RELAY. WHEN THE IGNITION SW IS TURNED
ON, CURRENT FLOWS FROM GAUGE FUSE TO TERMINAL 2 OF THE AIR VENT MODE CONTROL SERVO MOTOR AND A/C MAGNETIC
CLUTCH RELAY (COIL SIDE) " TERMINAL 12 OF THE A/C AMPLIFIER, TERMINAL 1 OF THE A/C DUAL PRESSURE SW " TERMINAL 4
" TERMINAL 2 OF THE A/C AMPLIFIER, HEATER RELAY (COIL SIDE) " TERMINAL 3 OF THE BLOWER SW.
1. OPERATION OF AIR VENT MODE CONTROL SERVO MOTOR
WHEN THE DAMPER IS IN FACE POSITION AND THE BI±LEVEL OF THE AIR VENT MODE CONTROL SW IS THEN TURNED ON,
CURRENT FLOWS FROM TERMINAL 7 OF THE AIR VENT MODE CONTROL SW " TERMINAL 5 OF THE AIR VENT MODE CONTROL
SERVO MOTOR SO THAT A SIGNAL THAT THE GROUND CIRCUIT IS ACTIVATED IS INPUT TO TERMINAL ªBº OF THE CONTROL
CIRCUIT INSIDE THE AIR VENT MODE CONTROL SERVO MOTOR. SIMULTANEOUSLY, A SIGNAL THAT THE GROUND CIRCUIT IS NOT
ACTIVATED IS INPUT TO TERMINAL ªAº OF THE CONTROL CIRCUIT INSIDE THE SERVO MOTOR. THESE TWO SIGNALS ACTIVATE
THE CONTROL CIRCUIT SO THAT CURRENT FROM THE GAUGE FUSE TO THE SERVO MOTOR, CAUSING THE SERVO MOTOR TO
OPERATE AND THE DAMPER TO MOVE TO BI±LEVEL POSITION. WHEN THE DAMPER REACHES BI±LEVEL POSITION. A GROUND
CUT SIGNAL IS INPUT TO TERMINAL ªBº OF THE CONTROL CIRCUIT, THE CONTROL CIRCUIT OPERATES, THE SERVO MOTOR
STOPS ROTATING AND THE DAMPER STOPS AT BI±LEVEL.
WHEN ANOTHER MODE POSITION IS SWITCHED TO, INPUT OF SIGNALS TO TERMINAL ªAº AND TERMINAL ªBº OF THE CONTROL
CIRCUIT THAT GROUND IS NOT MADE (AS EXPLAINED ABOVE) ACTIVATES THE CONTROL CIRCUIT AND MOVES THE SERVO
MOTOR TO THE DESIRED POSITION.
2. AIR CONDITIONING OPERATION
WHEN THE BLOWER SW IS ON, CURRENT FLOWS THE GAUGE FUSE " HEATER RELAY (COIL SIDE) " TERMINAL 3 OF THE
BLOWER SW " TERMINAL 1 " GROUND, ACTIVATING THE HEATER RELAY. THIS CAUSES CURRENT TO FLOW FROM THE HEATER
FUSE TO THE HEATER RELAY (POINT SIDE) " A/C FUSE " TERMINAL 2 OF THE A/C SW. IF THE A/C SW IS THEN TURNED ON AT
THIS TIME. A SIGNAL IS INPUT TO THE A/C AMPLIFIER. THIS ACTIVATES THE A/C AMPLIFER AND A/C MAGNETIC CLUTCH RELAY SO
THAT CURRENT FLOWS FROM THE GAUGE FUSE TO THE A/C MAGNETIC CLUTCH RELAY (POINT SIDE) " A/C MAGNETIC CLUTCH.
CAUSING THE COMPRESSOR TO OPERATE. THE VSV (FOR A/C IDLE±UP) IS TURNED ON SIMULTANEOUSLY TO PREVENT A
DECREASE IN ENGINE SPEED DUE TO A/C OPERATION.
HEATER RELAY
(4)5± (4)4 : CLOSED WITH THE IGNITION SW ON AND BLOWER SW ON
A/C MAGNETIC CLUTCH RELAY
(5)5± (5)3 : CLOSED WITH THE IGNITION SW ON AND BLOWER SW ON AND A/C SW ON
A 2 A/C DUAL PRESSURE SW
1±4 : OPEN WITH PRESSURE 2.1 KG/CM (30 PSI, 206 KPA) OR ABOVE 27 KG/CM (384 PSI, 2646 KPA)
B 5 BLOWER RESISTOR
6±1 : APPROX. 3.17 W
6±3 : APPROX. 1.38 W
2±6 : APPROX. 0.38 W
: PARTS LOCATION
CODESEE PAGECODESEE PAGECODESEE PAGE
A 228 (1MZ±FE), 30 (5S±FE)A1732H 833
A 328 (1MZ±FE), 30 (5S±FE)B 432I 230 (5S±FE)
A1032B 532J 133
A1132B 632
A1232C1432
: RELAY BLOCKS
CODESEE PAGERELAY BLOCKS (RELAY BLOCK LOCATION)
425R/B NO. 4 (RIGHT KICK PANEL)
526R/B NO. 5 (ENGINE COMPARTMENT LEFT)
: JUNCTION BLOCK AND WIRE HARNESS CONNECTOR
CODESEE PAGEJUNCTION BLOCK AND WIRE HARNESS (CONNECTOR LOCATION)
1B20COWL WIRE AND J/B NO 1 (INSTRUMENT PANEL LEFT)1D20COWL WIRE AND J/B NO. 1 (INSTRUMENT PANEL LEFT)
SYSTEM OUTLINE
SERVICE HINTS

255
: CONNECTOR JOINING WIRE HARNESS AND WIRE HARNESS
CODESEE PAGEJOINING WIRE HARNESS AND WIRE HARNESS (CONNECTOR LOCATION)
EC138 (1MZ±FE)ENGINE WIRE AND ENGINE ROOM MAIN WIREEC140 (5S±FE)ENGINE WIRE AND ENGINE ROOM MAIN WIRE
IK142COWL WIRE AND A/C SUB WIRE
IL142COWL WIRE AND SERVO MOTOR SUB WIRE
IP144ENGINE WIRE AND COWL WIREIP344ENGINE WIRE AND COWL WIRE
IR144ENGINE ROOM MAIN WIRE AND COWL WIRE
: GROUND POINTS
CODESEE PAGEGROUND POINTS LOCATION
IG42INSTRUMENT PANEL BRACE LH
II42RIGHT KICK PANEL
: SPLICE POINTS
CODESEE PAGEWIRE HARNESS WITH SPLICE POINTSCODESEE PAGEWIRE HARNESS WITH SPLICE POINTS
E638 (1MZ±FE)ENGINE ROOM MAIN WIREI13E 640 (5S±FE)ENGINE ROOM MAIN WIREI1444COWL WIRE
I 544COWL WIREI19
44COWL WIRE
I 744COWL WIRE

260
GROUND POINT* 2 : TMM MADE *
1:TMCMADE
: PARTS LOCATION
CODESEE PAGECODESEE PAGECODESEE PAGE
J 133J 536 (W/G)
J 233J 733
: RELAY BLOCKS
CODESEE PAGERELAY BLOCKS (RELAY BLOCK LOCATION)
125R/B NO. 1 (LEFT KICK PANEL)
425R/B NO. 4 (RIGHT KICK PANEL)
526R/B NO. 5 (ENGINE COMPARTMENT LEFT)
626R/B NO. 6 (BEHIND GLOVE BOX)
727R/B NO. 7 (NEAR THE BATTERY)
: JUNCTION BLOCK AND WIRE HARNESS CONNECTOR
CODESEE PAGEJUNCTION BLOCK AND WIRE HARNESS (CONNECTOR LOCATION)
1C
1F20COWL WIRE AND J/B NO. 1 (INSTRUMENT PANEL LEFT)
1G
20COWL WIRE AND J/B NO. 1 (INSTRUMENT PANEL LEFT)
1I20 (*1)ROOF WIRE AND J/B NO. 1 (INSTRUMENT PANEL) TMC MADE1I20 (*2)COWL WIRE AND J/B NO. 1 (INSTRUMENT PANEL) TMM MADE
1M20COWL WIRE AND J/B NO. 1 (INSTRUMENT PANEL LEFT)
2B22ENGINE ROOM MAIN WIRE AND J/B NO 2 (ENGINE COMPARTMENT LEFT)2E22ENGINE ROOM MAIN WIRE AND J/B NO. 2 (ENGINE COMPARTMENT LEFT)
2F22COWL 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)
EA138 (1MZ±FE)ENGINE ROOM MAIN WIRE AND ENGINE ROOM NO. 3 WIRE
EB138 (1MZ±FE)ENGINE ROOM MAIN WIRE AND RELAY WIREEB140 (5S±FE)ENGINE ROOM MAIN WIRE AND RELAY WIRE
IH242FRONT DOOR LH WIRE AND INSTRUMENT PANEL WIRE
IJ142FLOOR NO. 1 WIRE AND COWL WIRE
IK142COWL WIRE AND A/C SUB WIRE
IL142COWL WIRE AND SERVO MOTOR SUB WIRE
IM242INSTRUMENT PANEL WIRE AND CONSOLE BOX WIRE
IO142FLOOR NO. 1 WIRE AND SEAT WIRE
IP344ENGINE WIRE AND COWL WIRE
IQ144ENGINE WIRE AND INSTRUMENT PANEL WIRE
IT144FRONT DOOR RH WIRE AND INSTRUMENT PANEL WIRE
IV144ROOF WIRE AND COWL WIRE
IV244ROOF WIRE AND COWL WIRE MADE IN USA
46 (S/D)
BX148 (C/P)FUEL GAUGE WIRE AND FLOOR NO. 1 WIREBX1
50 (W/G)
FUEL GAUGE WIRE AND FLOOR NO. 1 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 WIREBa148 (C/P)FLOOR NO. 1 WIRE AND LUGGAGE ROOM NO. 2 WIRE
Bb150 (W/G)LUGGAGE ROOM NO. 1 WIRE AND FLOOR NO. 1 WIRE
Bc150 (W/G)BACK DOOR NO. 1 WIRE AND FLOOR NO. 1 WIRE
Bd350 (W/G)BACK DOOR NO. 1 WIRE AND BACK DOOR NO. 2 WIRE