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

218
ABS (ANTI±LOCK BRAKE SYSTEM) (TMM MADE)
THIS SYSTEM CONTROLS THE RESPECTIVE BRAKE FLUID PRESSURES ACTING ON THE DISC BRAKE CYLINDERS OF THE RIGHT
FRONT WHEEL, LEFT FRONT WHEEL AND REAR WHEELS WHEN THE BRAKES ARE APPLIED IN A PANIC STOP SO THAT THE
WHEELS DO NOT LOCK. THIS RESULTS IN IMPROVED DIRECTIONAL STABILITY AND STEERABILITY DURING PANIC BRAKEING.
1. INPUT SIGNALS
(1) SPEED SENSOR SIGNAL
THE SPEED OF THE WHEELS IS DETECTED AND INPUT TO TERMINALS FL+, FR+, RL+ AND RR+ OF THE ABS ECU.
(2) STOP LIGHT SW SIGNAL
A SIGNAL IS INPUT TO TERMINAL STP OF THE ABS ECU WHEN BRAKE PEDAL IS OPERATED.
2. SYSTEM OPERATION
DURING SUDDEN BRAKEING THE ABS ECU, WHICH HAS SIGNALS INPUT FROM EACH SENSOR, CONTROLS THE CURRENT
FLOWING TO THE SOLENOID INSIDE THE ACTUATOR AND LETS THE HYDRAULIC PRESSURE ACTING ON EACH WHEEL CYLINDER
ESCAPE TO THE RESERVOIR. THE PUMP INSIDE THE ACTUATOR IS ALSO OPERATING AT THIS TIME AND IT RETURNS THE BRAKE
FLUID FROM THE RESERVOIR TO THE MASTER CYLINDER, THUS PREVENTING LOCKING OF THE VEHICLE WHEELS.
IF THE ECU JUDGES THAT THE HYDRAULIC PRESSURE ACTING ON THE WHEEL CYLINDER IS INSUFFICIENT, THE CURRENT
ACTING ON THE SOLENOID IS CONTROLLED AND THE HYDRAULIC PRESSURE IS INCREASED. HOLDING OF THE HYDRAULIC
PRESSURE IS ALSO CONTROLLED BY THE ECU, BY THE SAME METHOD AS ABOVE. BY REPEATED PRESSURE REDUCTION,
HOLDING AND INCREASE ARE REPLATED TO MAINTAIN VEHICLE STABILITY AND TO IMPROVE STEERBILITY DURING SUDDEN
BRAKING.
A 8, A 9 ABS SPEED SENSOR FRONT LH, RH
1±2 : 0.8 K±1.3 KW
A19, A20 ABS SPEED SENSOR REAR LH, RH
1±2 : 1.1 K±1.5 KW
A 4(A), A 5(B) ABS ECU
(CONNECT THE ECU CONNECTORS)
(A)12±GROUND : APPROX. 12 VOLTS WITH IGNITION SW AT ON POSITION AND DATA LINK CONNECTOR 1 (CHECK CONNECTOR)
TS±EI NOT CONNECTED
(A)15±GROUND : APPROX. 12 VOLTS WITH IGNITION SW AT ON POSITION AND DATA LINK CONNECTOR 1 (CHECK CONNECTOR)
TS±EI NOT CONNECTED
(B) 4±GROUND : ALWAYS CONTINUITY
(B) 2±GROUND : APPROX. 12 VOLTS WITH IGNITION SW AT ON POSITION
(A) 9±GROUND : APPROX. 12 VOLTS WITH BRAKE PEDAL DEPRESSED
(B) 1±GROUND : ALWAYS APPROX. 12 VOLTS
SYSTEM OUTLINE
SERVICE HINTS

ABS ( ANTI – LOCK BRAKE SYSTEM) (TMM MADE)
-Memo
37

220
ELECTRIC TENSION REDUCER
1 2
1 2 1 2
1 2IS 1 3
BLTE NSI ON
RE DUCER
SOLENOID LHTENSION
REDUCER
SOLENOID RH
BUCKLE
SW LHBUCKLE
SW RH FROM POWE
R
GB±RB±R W±B
B7,B8 B10T3 T2B±R
B±R
IJ1 1
B±R
2 1
R±Y
D25
DIODE
(
FOR TENSION REDUCER)
W±B
15A
ECU±IG R SOURCE SYSTEM(
SEE PAGE 64)
1A 7
3A14
3D 53C 16

224
AUTO ANTENNA (W/G)*
1 : 8 SPEAKER
* 2 : 6 SPEAKER
W±B
AUTO ANTENNA MOTOR
AND RELAY
BL A2 1
M 145786 256431
RR R
3
8
1OFF
B±R
L±R
RADIO A ND P LAY ER(
*1)
RADIO S W
PLAYER
SW ON
B±R
P±L
II2 9 II2 13
IG1 1IG12
IG1 9IG110IM28
3
8
9OFF RADIO S W
PLAYER
SW ON 9
BB B
L±RB±R
L±R B±R
L±R
GR
W P±L B±R L±R B±R
P±L B±RGR RB±R ACC
JUNCTION
CONNE CTORSTEREO COMPONENT
AMPLIFIER
RADIO A ND P LAY ER(
*2)
(
*2) (
*2)
(
*1) (
*1)
J3S8
R2
R3
L±Y
Y
R±G
B
R±W
W±B
23
LBW±B IM2 9
C C
JUNCTION
CONNECTOR J5
1H 61C 1
2G 21L11L9 FROM POWER SOURCE SYSTEM(
SEE PAGE 64)
15A
ECU±IG15A
CIG/RA DIO 20A
DOME

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