Cooling system TOYOTA CAMRY 1994 XV10 / 4.G Wiring Diagrams Workshop Manual

56
POWER SOURCE (Current Flow Chart)
*Page Nos. of
Related Systems
Parts
Code or
Location
CB or Fuse
Location
* These are the page numbers of the first page on which the related system is shown.
The part indicated is located somewhere in the system, not necessarily on the page indicated here.


D25 E9E8 130
134
138
140130
138160 80 220126
198
20480
Door Courtesy SW Front LH
Door Key Cylinder Light and SW
Engine Control Module (Engine
and Electronic Controlled
Transmission ECU) (A/T) (1MZ±FE)
40A AM1
15A CIG/RADIO
40A DEFOG
15A ECU±1G
10A GAUGE
7.5A IGN
10A MIR±HTR
30A POWER
7.5A SRS
15A STOP
15A TAIL
7.5A TURN
20A WIPER
30A AM2
7.5A ALT±S
30A CDS FAN
20A DOME
15A ECU±B
15A EFI
10A HAZ
15A HEAD (LWR±LH)
15A HEAD (LWR±RH)
15A HEAD (UPR±LH)
15A HEAD (UPR±RH)
15A HEAD LH
15A HEAD RH
10A HORN
40A MAIN
7.5A OBD
10A STARTER
10A A/C
40A HEATER
7.5A DRL
100A ALT
60A ABSE7 E6 E5 E3 E2
D24 D23 D22 D21 D20 D19 D18
D17 D16 D15 D14 D13 D12130
138
140130
134
138
140130
134
138
140160 160 160 160 160 160198
220220 242 80
90
98
19880
Engine Control Module (Engine
and Electronic Controlled
Transmission ECU) (A/T) (5S±FE) Engine Control Module (Engine
and Electronic Controlled
Transmission ECU) Engine Controlled
Transmission Pattern
Select SW Engine Coolant Temp. Sensor
(Water Temp. Sensor) (for
Cooling Fan) (1MZ±FE) Electronic Controlled Transmission
Solenoid (5S±FE) Electronic Controlled Transmission
Solenoid Diode (for Tension Reducer) (C/P) Date Ling Connector 3 Door Lock Motor Rear RH
(EX. C/P) Door Lock Motor Rear LH
(EX. C/P) Door Courtesy SW Front RH
Door Courtesy SW Rear LH
Door Courtesy SW Rear RH
Door Key Lck and Unlock SW LH
(Ex. C/P)
Door Key Lck and Unlock SW RH
(Ex. C/P)
Door Lock Control SW RH
Door Lock Motor and Door Unlock
Detection SW Front LH
Door Lock Motor and Door Unlock
Detection SW Front RH
[LOCATION](1)
(7): J/B No. 1 (See page 20)
: R/B No. 7 (See page )(2)
(8): J/B No. 2 (See page 19)
: Fuse Box (F10, F17 See
on page )(3): R/B No. 1 (See page 23)
2022
25
27
28 29

199
3
3C
28D 6 C 1
234I6
I18 I18
C
D B 20 A32 B7B1B22
C 5D 6D 3
D 112 1
BRG±OR±L L±R R±L
L±R BR BR
GR±B G±W
G± OL±R B±Y L±WG
BR
BR
R±L R±L
L±R L±RL±R
G±O THW IDL VTA VCP E2
L±W
L±WII2 4
R±L ENGINE COOLANT TEMP.
SENSOR(
EFI WATER
TEMP. SENSOR)
FROM
CRUISE CONTROL ECU
THROTTLE POSITION
SENSORFROM POWER SOURCE SYSTEM(
SEE PAGE 64)
JUNCTION
CONNECTOR
POWER
NORMAL ELECTRONIC CONTROLLED
TRANSMISSION
PATTERN SELECT SW
TE 2 TE1OD2
E1 TE 2 TE1
DA TA LINK CONNECTOR 1
(
CHECK CONNECTOR)JUNCTION
CONNECTOR D 12
SPEED
IP3 11 IP314 5124
G±B
G
23
1 VEHICLE SPEED
SENSOR
(
SPEED SENSOR)
LGP
R±L SP1
COMBINATION
METER
V5C8 T1
J3
E6E4
J1
D1I18II1 6
L±R TO
COMBINATION
METERL±R
IN1 6IN13
R±L
B E7 ,E8
AC,E9
ENGINE CONTROL MODULE(
ENGINE AND ELECTRONIC CONTROLLED TRANSMISSION ECU)
FROM
COOLING FAN ECU
L
D ,E10
IP 1 1
G± W
V±Y V±Y
AA
JUNCTION
CONNECTOR J7
BR
1K 81D6
3D 223D 10
10A
GAUGE

236
COMBINATION METER
AB
IJ1 5IJ111 IJ118
BX1 3 BX1 2 BX1 1 IP3 2
IP3 6
IP1 8IP 3 11 IP314
IP3 5
IP3 161
ED1 A 4
A 8A7A6A 5A12 B 11 B7B10 C 8C7C 4
123
23
4
1 I9
I9 C C
6 FROM POWER SOURCE SYSTEM(
SEE PAGE 64)
R±L
R±L R±L R±L
BRY±L Y±R
BR BR BR Y±L Y±R Y±R
Y±L
BR
BR BR
B Y±G
BY±G
B
P
LG GG±B
G±B G±B
R±W
Y±B Y±BV±Y
R±L JUNCTION
CONNECTOR
BR
BR
FROM E NGINE CONTROL MODULE
(
E NGINE A ND E LE CTRONIC CONTROLLED
TRANSMISSION ECU)(
A/T)
FROM E NGINE CONTROL MODULE
(
ENGINE ECU)(
M/T)
FROM CRUISE CONTROL ECU
SPEEDFUEL
FUEL
WATER TEMP.
TA CHO
ABS
SEAT BELT
OIL
FUEL SENDER
WATER TEMP.
SENDER
IGNITER
VEHICLE SPEED
SENSOR
(
SPEED SENSOR)
TO AB S ECU
TO INTEGRATION
RELAY
OIL P RES SURE
SW
J2
B
W2
I2
V5
O1F1 5C
COMBINATION METER C8 ,C9 , C10
TO BACK±UP LIGHT SW(
M/T)
TO PARK/NEUTRAL POSITION SW
(
NEUTRAL START SW)(
A/T)
TO GENERA TOR(
ALTERNATOR) R±L
R±L
I18 6
TA C
COOLING FAN
ECU C14
BR
B
B JUNCTION CONNECTOR J7
(
*6) (
*6)
(
*7)A
A
(
*7)
(
*6)
1B 6 1D 610A
GAUGE
3D 13
3D 12
1D 121D 13
3C 133C 12

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

25±2 (TMC Made)
26±2 (TMM Made)
ABS
(Anti±Lock Brake System)Air ConditioningAuto AntennaBack±Up LightBack Door Lock
(w/o Power Window)ChargingCombination MeterCruise ControlDoor LockElectric Tension Reducer
Engine ControlIlluminationInterior LightLight Auto Turn OffMoon RoofPower SeatPower SourcePower WindowRadiator Fan and
Condenser FanRadio and Player
36±76±2 (1MZ±FE)
7±2 (5S±FE)19±124±233±122±32±422±4 (W/G)6±7 (1MZ±FE)
7±7 (5S±FE)35±1(Lever Con±
trol SW Type)
36±1(Push Con±
trol SW Type)27±3 (W/G)28±3 (S/D,C/P)
Front Wiper and WasherHeadlight
Rear Window DefoggerRear Wiper and WasherRemote Control MirrorSRS (Supplemental
Restraint System)Shift LockStarting and IgnitionTurn Signal and Hazard
Warning LightUnlock and Seat Belt
Warning
34±3 (5S±FE)21±38±3 (for USA)
10±1 (for Canada)20±21~36±134±211±1 (S/D, C/P w/ Key
Illuminated Entry)
12±1 (W/G w/ Key
Illuminated Entry)
13±1 (S/D, C/P w/o Key
Illuminated Entry)
14±1 (W/G w/o Key
Illuminated Entry)18±418±23±1 (1MZ±FE)
4±1 (5S±FE A/T and
California M/T)
5±1 (5S±FE Ex. A/T
and California M/T)15±2
23±323±234±19±3 (S/D, C/P)
18±2 (W/G)1±2 (1MZ±FE)
2±2 (5S±FE)8±1 (W/G)
9±1 (S/D, C/P)
Taillight
24±4 (W/G)
28±1 (S/D,C/P)22±220±116±1 (S/D, C/P)
17±1 (W/G)
Stop Light
SYSTEM INDEX
21±129±1(S/D, C/P 6 Speaker)
30±1(W/G 8 Speaker)
31±1(S/D, C/P 4 Speaker)
32±2(W/G 6 Speaker)
264
Horn
Cigarette Lighter and
ClockElectrical Controlled
Transmission and
A/T Indicator
27±2 (1MZ±FE)
Electrically Controlled
Hydraulic Cooling Fan
1994 Model (Location No. 1 to 36)
OVERALL ELECTRICAL WIRING DIAGRAM