1994 TOYOTA CAMRY AC system

228
RADIO AND PLAYER (S/D, C/P 4 SPEAKER)
B
B 8B9B4B3
B 5 B 1 B 6 B 2 B 7A2A6A1A3
IH1 8IH113 IG18IG118 IG17IG117 IT24IT29
111 1222 2II2 9 II2 3
AB
B A
IHIU1 10 IU1 9
R R R
L±R L±YP±L B±R
GRP±L B±R BR
P
V
B
Y
R
W
LG
L L LGWRY B V P BR
FROM POWER SOURCE SYSTEM
E FL+ FL± RL+ RL± RR+ RR± FR+ FR±ANT ANP B ACC
L±R
RADIO AND PLAYER JUNCTION
CONNECTOR TO AUTO ANTENNA MOTOR
AND RELAY
FRONT DOOR
SPEAKER LHREAR SPEAKER
LHREAR SPEAKER
RHFRONT DOOR
SPEAKER RH F1 0
R12 R13 F11J3
R3 , R4A
1K 121C 1
1L 915A
CIG/RA DIO (
SEE PAGE 64)2G 220A
DOME

230
RADIO AND PLAYER (W/G 8 SPEAKER)
A
B 10 A7
B 6 B 2 B 7
IM2 2IM26
1
12
2 II2 9 II2 3
AB
B A
IH
R R R
L±R L±Y
GR BR
P
V V P P
VBR
FROM POWE R SOURCE
EFL+ FL±BACC
L±R JUNCTION
CONNECTOR
FRONT DOOR
SPEAKER LH FRONT TWEETER
(
SPEAKER)
LH
F1 1 F1 3
J3
S8 ,S9B
STEREO COMPONENT AMPLIFIER
IH1 8IH113
V P
IM2 7A 3A9A10 A11 A12 A4A6A5A14 A13 4311 12135761514
IM2 4IM23
L±Y
GR
(
SHIELDED) (
SHIELDED)
(
SHIELDED)
B ACC GND SGND BEE P MUTE FR FL RR RL
B
W
BR
W
R
BR
B
L
G
Y
ANTIG1 9
8
B±R B±R
TO AUTO ANTENNA MOTOR
AND RELAY
RADIO AND PLAYER R2
I15 B ACC GND SGND BEE P MUTE FR FL RR RL
A 11
AMP
R
AMP
I15 IM2 9
RRP±L
TO AUTO ANTENN
AND RELAY
IM2 8
B±R
B 9 B 8
IM1 2IM16
IG1 8IG118
Bc3 10 Bc34
Bd1 4Bd11
B
Y B
Y B
Y B
Y
Bc3 1 Bc3 5RL+ RL±
D
EDE
DE
1122
B
YB
Y
B B
YY
JUNCTION
CONNECTOR J5
R14
REAR TWEETER
(
SPEAKER)
LHR12
REAR SPEAKER
LH
1L 915A
CIG/RADIO SYSTEM(
SEE PAGE 64)
A MOTOR
1K 121C 1
2G 220A
DOME

234
RADIO AND PLAYER (W/G 6 SPEAKER)
B
B 8B9 B 4B3
B 6 B 2 B 7A 2A6
IH1 8IH113IG1 8IG118
11 22 II2 9 II2 3
AB
B A
IHIU1 10 IU1 9
R R R
L±R L±Y
P±L B±R GR
P±L B±R BR
P
V
B
Y Y B V P BR
FROM POWER SOURCE SYSTEM(
SEE PAGE 64)
EFL+ FL±RL+ RL± ANT ANP BACC
L±R
RADIO A ND P LAY ERJUNCTION
CONNECTORTO AUTO ANTENNA MOTOR
AND RELAY
FRONT DOOR
SPEAKER LHREAR SPEAKER
LH F1 1
R12 J3
R3 , R4A
12
REAR TWEETER
(
SPEAKER)
LH R14Bc3 10 Bc34
Bd1 4Bd11 Bc3 5Bc31DE DDE
B
Y Y B
Y BY B
Y B
EJUNCTION
CONNE CTOR J5
2G 21L9 20A
DOME15A
CIG/RADIO
1K 121C 1

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

237
*
1 : W/O A/T INDICATOR LIGHT
* 2 : W/ A/T INDICATOR LIGHT
*
3 : MALFUNCTION INDICATOR LAMP
(
CHECK ENGINE WARNING LIGHT)
*7 : 5S±FE *
6 : 1MZ±FE * 5 : TMM MADE
*
4:TMCMADE
AB
C
COMBINATION METER1
IEIF 2 1B 15 B3B9B13
B 12B 8B14 C 1 C 3 A 9A 10C 2
II1 4
11B DE 18 A
FB E D
8 A
FAFROM POWER SOURCE SYSTEM(
SEE PAGE 64)
B±W
R±Y
R±GW±R Y±G B±W
B±O G± L
G±R
R±Y R±Y W±BG±RG± L
±B W±B
R±W R±W
R±W
G±O
Y
B±Y
R±BB±YY G±O R±Y
R±Y
R±W 10A
STARTER
TO LIGHT FAILURE
SENSOR
FROM º HEAD RHº FUSE
FROM º HEAD(
UP R±RH)
ºFUSE
(
CA NADA) (
USA) CRUISE
(
*3)
BRAKE
BULB
CHECK
RE AR LIGHT
O/D OFF
CHARGE
SRS
HIGH BEAM
PKB BRK
TOO/DMAINSW
TO GENERATOR(
ALTERNATOR)
TO CENTER AIRBAG
SENSOR ASSEMBLY
TO DIMMER SW
[COMB. SW] TO CRUISE CONTROL ECU
TO E NGINE CONTROL MODULE
(
ENGINE AND ELECTRONIC CONTROLLED
TRANSMISSION ECU)(
A/T)
TO E NGINE CONTROL MODULE
(
ENGINE ECU)(
M/T)
BRAKE FLUID
LEVEL SWJUNCTION
CONNECTOR
JUNCTION
CONNE CTOR
DAYTIME RUNNING
LIGHT RELAY
(
MAIN) PARKING
BRAKE SW
PARKING
BRAKE SW(
EX. 1MZ±FE A/T)
(
1MZ±FE A/T)
JUNCTION
CONNECTOR
JUNCTION
CONNECTOR (
USA)
(
CANA DA) C8 ,C9 , C10
J2
J2 B2
P3
P2 D4
J2
J3(
*1) (
*1)
(
USA)
II1 2
I6
G±O
G±O G±O
(
*2) FROM A/T
INDICATOR LIGHT
W±B
(
CA NADA)(
*5) (
*5)
O
(
*4)O
(
*4)
4
3B 203C 2
1D 31F3 7. 5A
IGN7. 5A
SRS
3B 19 3D19 3B 83D18
3D 83C8 3A 10
1M 51C 8
W

238
COMBINATION METER* 1 : W/O A/T INDICATOR
AB
A 11 A2A1
A 3
C13 B5 B 16
IGB 4
G
R R RG±B G±YL±R
R±YW±BB B
W±B W±B
GG
FROM ELECTRONIC
CONTROLLED
TRANSMISSION PATT
SELECT SW
FROM HA ZA RD S W(
TR)
FROM HA ZA RD S W(
TL) METER
ILLUMINATION
POWER
TURN RH
TURN LH
OPEN DOOR TO RHEOSTAT
TO DOOR COURTESY SW
COMBINATION METER C8 ,C9 ,C10AI13 II16
TO E NGINE CONTROL
MODULE(
ENGINE AN
ELECTRONIC CONTRO
TRANSMISSION ECU)
L±R
L±R L±R
(
*1)
(
*1)
2G 220A
DOME
G
15A
TA IL
1D 14
3C 4
3D 5
3D 203D 9
1C 5
3A 161C 1
3C 14
1D10
1D11
1L 83C183D 6 1D 2
1M 11C 11
FROM POWER SOURCE SYSTEM(
SEE PAGE 64)
ERN
D
LLED

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

243
FAN MOTOR OPERATION
WITH THE IGNITION SW IS TURNED ON, CURRENT FLOWS FROM ECU±IG FUSE TO RADIATOR FAN RELAY NO. 1 (COIL SIDE) AND
RADIATOR FAN RELAY NO. 2 (COIL SIDE) " TERMINAL 2 OF THE A/C SINGLE PRESSURE SW " TERMINAL 3 " TERMINAL 2 OF THE
WATER TEMP. SW " TERMINAL 1 " GROUND, AND RADIATOR FAN RELAY NO. 1 AND NO. 2 ARE TURNED ON.
*RADIATOR FAN MOTOR OPERATION
WHEN THE IGNITION SW IS TURNED ON, RADIATOR FAN RELAY NO. 1 IS TURNED ON. IF AT THIS TIME THE ENGINE COOLANT
TEMPERATURE IS APPROX. 90°C (194°F) OR HIGHER, THE WATER TEMP. SW IS TURNED OFF, RADIATOR FAN RELAY NO. 1 IS
TURNED OFF.
AS A RESULT, CURRENT FROM THE RDI FAN FUSE TO RADIATOR FAN RELAY NO. 1 (POINT SIDE) " TERMINAL 2 OF THE
RADIATOR FAN MOTOR " TERMINAL 1 " GROUND, THUS ACTIVATING THE ROTATION OF THE RADIATOR FAN MOTOR.
*LOW SPEED OPERATION
WHEN THE IGNITION SW IS TURNED ON AND THE A/C ACTIVATED, RADIATOR FAN RELAY NO. 1 AND RADIATOR FAN RELAY NO. 2
ARE TURNED ON, CURRENT FLOWS FROM A/C MAGNETIC CLUTCH RELAY (POINT SIDE) TO RADIATOR FAN RELAY NO. 3 (COIL
SIDE) " GROUND, AND RADIATOR FAN RELAY NO. 3 IS TURNED ON.
AS A RESULT, CURRENT FLOWS FROM CDS FAN FUSE TO TERMINAL 2 OF THE A/C CONDENSER FAN MOTOR " TERMINAL 1 "
RADIAOTR FAN RELAY NO. 2 (POINT SIDE) " RADIATOR FAN RELAY NO. 3 (POINT SIDE) " TERMINAL 2 OF THE RADIATOR FAN
MOTOR " TERMINAL 1 " GROUND, FLOWING TO EACH FAN MOTOR IN SERIES, CAUSING THE FAN TO AT LOW SPEED.
*HIGH SPEED OPERATION OF THE FAN MOTOR DUARING A/C OPERATION
WHEN THE A/C OPERATION, THE REFRIGERRANT PRESSURE BECOME HIGHER THAN OR DINARY LEVEL (APPROX. 15.58 KG/CM
2
(221.2 PSI, 1527 KPA)) THE A/C SINGLE PRESSURE SW IS TURNED OFF. AS A RESULT, RADIATOR FAN RELAY NO. 1 AND RADIATOR
FAN RELAY NO. 2 ARE TURNED OFF, AND CURRENT FLOWS FROM RDI FUSE TO RADIATOR FAN RELAY NO. 1 (POINT SIDE) "
TERMINAL 2 OF THE RADIATOR FAN MOTOR " TERMINAL 1 " GROUND, AND CURRENT FLOWS FROM CDS FAN FUSE TO
TERMINAL 2 OF THE A/C CONDENSER FAN MOTOR " TERMINAL 1 " RADIATOR FAN RELAY NO. 2 (POINT SIDE) " GROUND, AND
TO EACH FAN MOTOR IN PARALLEL, THUS CAUSING THE FAN MOTORS OPERATE HIGH SPEED.
NOTE THAT, BECAUSE THE CURRENT FLOWS IN THE SAME MENNER EVEN IF THE ENGINE COOLANT TEMPERATURE IS APPROX.
90°C (194°F) OR HIGHER, THE FAN MOTOR OPERATE AT HIGH SPEED.
A 2 A/C SINGLE PRESSURE SW
2±3 : OPEN ABOVE APPROX. 15.58 KG/CM2 (221.2 PSI, 1527 KPA)
CLOSE BELOW APPROX. 15.56 KG/CM2 (178.4 PSI, 1231 KPA)
2 1
2 1 A1R1 BLACKGRAY
12E5 A2BLACK
23
SYSTEM OUTLINE
SERVICE HINTS