1994 TOYOTA CAMRY brake sensor

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

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

256
GROUND POINT*3 :W/POWERWINDOW *
2:TMMMADE * 1 : TMC MADE
* 6 : AIR CONDITIONING(
LEVER CONTROL SW TYPE) *
5 : AIR CONDITIONING(
PUSH CONTROL SW TYPE) * 4 : W/O POWER WINDOW
LIGHT CONTROL SW
[COMB. SW]
KEY INTERLOCK
SOLENOID
WIPER AND WASHER SW
[COMB. SW]
RE AR WINDOW
DEFOGGER SW
CLOCK
CIGARETTE LIGHTER
BRAKE FLUID LEVEL
SW
TURN SIGNAL FLASHER
MOON ROOF
CONTROL RELAY
MOON ROOF MOTOR
MOON ROOF LIMIT SW
RADIO AND PLAYER
STEREO COMPONENT
AMPLIFIERBLOWER RESISTOR
A/C AMPLIFIER HEATER CONTROL SW
(
PUSH CONTROL SW
TYPE)
OR AIR VENT
MODE CONTROL SW
(
LEVER CONTROL SW
TYPE) BLOWER SW
STARTER RELAY
COMBINATION METER
CIRCUIT OPENING
RELAY
DAYTIME RUNNING
LIGHT RELAY(
MAIN)
CRUISE CONTROL ECU
CRUISE CONTROL SW
[COMB. SW]
HEATER RELAY I7
I7
I7
I7
I7
I13I13 I13 I13 I12
IH IG II2F
4 1
IM27F FI5
I5 W±B
W±B
W±B
W±B
W±B
W±B
W±B
W±B
W±B
W±B
W±B
W±B
W±B
W±B
BR
BR BRW±B W±BW±B
W±B
W±B W±BW±B
W±B
W±B
W±B
W±B
W±B W±B
W±B
W±B W±B
W±B W±B
W±B W±BW±BW±B W±B W±B W±B
W±B
W±BW±B
W±B
VANI TY LIGHT LHAIR VENT MODE CONTROL
SERVO MOTOR
W±B
W±B W±B W±B JUNCTION
CONNE CTOR J1
DIMMER SW
[COMB. SW]
IL17 IK 14
W±B
W±B
CENTER AIRBAG SENSOR
ASSEMBLY(
E2)6
VANITY LIGHT RHW±B W±B
W±B
W±B
MOON ROOF CONTROL SW
AND PERSONAL LI GHT
(
W/ CD PL AYER)(
CANADA)
(
W/O CD PLAYER)IE
W±BIV 2 IV1
(
W/G)(
S /D, C/P) (
*1)W±B W±B
(
*2)
(
*2)
B5:S/D
B21 : C/P
B32 : W/G
B4:S/D
B21 : C/P
B31 : W/G
BK : S/D, C/P
BP : W/G
6 6 W±B
I5
W±B
DA TA LINK
CONNE CTOR 3
F W±B
B4:S/D
B30 : W/G
B20 : C/PI7:*5
I14 : * 6
1 HIGH BEAM INDICATOR
LIGHT [COMB. METER]
CRUISE CONTROL
CLUCH SW W±B
NOISE FILTER
POWER MAIN RELAY
INTEGRATION RELAY
UNLOCK WARNING SW
[IGNITION SW] 1C11
W±B W±B
CENTER AIRBAG SENSOR
ASSEMBLY(
E1)
1G4
1F1
1M1
1I6 1F2
1M 51C 8
3C
3D6
3A13
3A12
3B5
3C 186
3B14DEFOGGER RELAY 1C10

1
234
25 CAMRY
4ACC
IG1
ST1
IG2
ST2 AM1 2
AM2
3EF17EC1 3EC1
8IP3 3IP1 3A 1A
6
B
5B 1B 4A 2A
1CSR23 A
MR24 A
R±4A
D/ G5A
TC15 B
TS13 B
W
13 ASFL
1ASF R
26 ASRR
14 ASRL
18 AAST
6AMT
15 AGND
2AGND
22 AFL±
9AFL +
10 AFSS 1G 9
3C 17
3C 13 3D 17 3D16
3C 3
2IR2 1E 1
1A
SFR4A
SF L3A
SRR6A
SRL2A
AST5A
MT
4B +B S
1B GN D
3B +BM
EA6IR2 7IR2 5IR21G 32H2
3C 16 3B11 1B 61A72G3
3C 15 3B2
12
3C
19
3C4
B6
A
3AFR±
16 AFR+
1BRL±
9BRL +
7BRSS
16 BRR±
8BRR+ 14 B
PKB 25 A
BAT 12 A
IG1 6B
STP1IR2 4IR2
12IJ1 19IJ1 6IJ1 5IS1 6IS14IS1
M C
C
G± W G±B W± L
W± B
W±B
W± R
L±W
G±W
L±R
G±R
R
R±W
W± B
G
R
BR
B
W
G
R
BR
BR
B
W Y BRR G R G W± B W± R
W
GR±L
W± R GR±GWW±LW±LB±Y W WW
GR±RG± W
R±L
GR±R
LG±R
G±W
R± G LG±R LG±R
G±B R±YR± G LG±RY±B Y± B
R±L
B± R
L±Y
R±WL±Y B± R B± R
L±Y BR BR W± B
G±B
W±B W± LB±Y
B
B± Y
B G±B
From Stop
Light SW
<8±2><9±2>
To Data
Link
Connec tor 1
(
Che ck
Connec tor)
<3±3> To Da ta
Link
Connect or 2
(
TDCL)
< 3±2>
<4±5><5±4> From Data Link Connec tor 1
(
Check Connec tor)
< 3±3>
To Data Link
Connec tor 2
(
TDCL)
<3±2>
< 4±6> < 5±4>
To Parking Brake
SW< 33±3>
15A
ECU± B 15A
ECU±I G 10A
GA UGE
Front right
f ender 40A
AM1
60A ABS
100A ALT
FUSE BOX
I12
IGNITION SW
J3
JUNCTION
CONNECTOR
FL MAIN
2. 0L
BATTERY
W± B(
SHI ELDED)(
SHI EL DED)(
SHIELDED)(
SHI EL DED)
(
SHI EL DED) (
SHIELDED)BR
112 2221 1
A8
ABS SPEED
SENSOR FRONT LHA9
ABS SPEED
SENSOR FRONT RHA1 9
ABS SPEED
SENSOR REAR L HA20
ABS SPEED
SENSOR REAR RH
123
4562 1
34 ABGRAY BLACKABS ACTUATOR 2B 4B
7
3C
ABA BS WARNI NG LI GHT
[COMB. METER]W±L
GR A YC
C
R±L
J1
JUNCTION
CONNECTOR
16 11 10 9 8 5 4 3 2 1 1213146 7 15 109 8 7 6 5 4 3 2 1 1 2Fro m Data
Link
Connec tor 1
(
Ch eck
Connec tor)
< 3±3> < 4±7>
<5±3>
15
1A6
1M G±W WIP3 3
Power Source ABS(
Anti±Lock Brake System)(
TMC Made)
W± B
B*1 : 1 MZ± FE
*2 : 5S±FE
B
ABS RELAY
ABS ACTUATORABS ECUABS WARNING LIGHT
[COMB. METER]
11 A
1B 1A
1D
1E
W W± L
(
*1)
(
*2)
B(
*2)
F10 A , F16 C ,B(
*2) (
*1)
F17 E,
D
A6 A , A7 B
A4 A , A5 BA13 A , A14 BC9 A ,C10 B
A5 A4ABS REL AY
12
34AGRAY
1
4
5 2
3
6 BGRAY A6 A7
C9 C10BLUE16 ABS ECU
B ADARKGRAY
DARK GRAY 12
34567891011 12 13
14 15
16 17 18 19 20 21 22 2324 25 26
12345678
9 101112131415A13
A14
D F18E F17C F16B (
*2)
F1 0A (
*1)
F1 0FUSE BOX
1 1
1 1
,F18
v

OVERALL ELECTRICAL WIRING DIAGRAM
1
234
26 C AM R Y
4ACC
IG1
ST 1
IG2
ST 2 AM1 2
AM2
1G 9
3D 17 3D16
1E 1
3EF1 7EC11 2
W W± L
W W± L
B±Y
I12
IGNITION SW
FUSE BOX 40A
AM1
60A ABS
100A ALT BFL MAIN
2. 0L
BATTERY3C 178IP3 3IP1
2IR2
To Data Link
Connec tor 2(
TDCL)
< 3±2> < 4±5> < 5±4>C CY± B Y± B
LG±R LG±R LG±R
12 IR13EC1
R± G
R± Y R± GFr om Dat a Link
Connector 1
(
Chec k Connector)
<3±3><4±7><5±3>
12A 15A 3B 1A 1B9A 2B
11A 5A 13A 7A 4B 4A 2A 6A 14A3IP3
4IR23C 133C 3
12
3C
G±B G±B G± B G±BG±W R± G LG±R
To Data Link
Connec tor 2
(
TDCL)
< 3±3> < 4±5> < 5±4>
19 IR13C 73C 191A 151M 6
G±W G±W G±W G±W
Fr om Stop Light
SW< 8±2> < 9±2>
1IR23C 153C 161A 7
4
B6
A1G 3
1B 6B± R B± R B± RR±L B±Y
CC
J1
JUNCTION
CONNECTOR R± L G±B15A
ECU±IG 10A
GAUGE
ABS WARNING LIGHT
[COMB. METER]
J3
JUNCTION
CONNECTOR W±L
+B S TC TS L P W I G S TP
RR± RR+ RL ± RL+ GN D FL ± FL+ FR± FR+ABS ACTUATOR AND ECU
20 IR1 13 IR1
12 IJ1 19 IJ1
12
R
G G R
GR
8IR2 3IR2
5IS1 6IS1
12
W
B B W
Y±BY
6IJ1 5IR2
6IR2 7IR2
21 21
EA4IS1
G R B
B
R
G
W±B W±B
W± B
W± B
A20
ABS SPEED
S ENSOR RE AR RH A1 9
ABS SPEED
SE NS OR RE A R L H A8
ABS SPEED
SENSOR FRONT L H A9
ABS SPEED
SENSOR FRONT RH
(
*3)(
*3) (
*3) (
*3)(
*3)(
*3) (
*3) (
*3)(
*3)
10 9 8 7 6 5 4 3 2 1BGRAY ABLUE ABS WARNING LIGHT
[COMB. METER]2 1
34BBLACKABLACK ABS ACTUATOR AND ECU
P o w e r S o urce ABS(
Anti Lock Brake System)(
TMM Made)
*3: SHIELDED
Front right
f ender
From Data Link
Connec tor 1
(
Check Connec tor)
<3±3> R± L
12345678
9 101112131415
F17 E , F1 8 D F10 A ,C ,B 1B 1A
1D
1C 1E
(
*2)
(
*1)
WW W
(
*2)
(
*1)
(
*2)
W
(
*2)
A4
A5
C1 0C9
16 11 10 9 8 5 4 3 2 1 12131467 15C9 A , C10 B
A4 A ,A5 B*2: 5S±FE *1 : 1MZ± FE
11
11 A (
*1)
F1 0 B(
*2)
F10 CF16
E F1 7 DF18 FUSE BOX ,F16
To Data Link
Connec tor 1
(
Check Connec tor)
<3±3>

1
234
33 CAM RY
4ACC
IG1
ST1
IG2
ST2 AM1 2
AM2
1G 91G 3
1E 11B 6
3EF1
3D 6
1C 113C 1813 B 2C 1A 2A 11 A 16 B 4B 9B 6B 4A15 B
8A 7A 6A 8C 7C 11B 5A 4C 7B 9A 3C 12B14 1C 3A 10 A 5B 8B 3B
5IJ1 11IJ1 18IJ1
1 BX1 2 BX1 3 BX1 1 6 I P3 6 I P3 8 I P1 2IP3 11IP31D 13
3D 13
3D 121D 12
3A 10
F
F
EDIE1M 1
IG 11 4II13B 33C8 2
A 1
1C 8
1M 5 123 32
1B±Y
R± L R± L
BR
R±LR± Y
R± W
R± WV± Y
W± B W±B W±BR± W R± W R± W W±B W± B W± B R± Y R± YP LG
B(
*3) Y±GBR BR Y±L Y± R Y± R
Y± L
BR
BR BR BR BR
Y±G
B G± B
BY± L Y±R BWW
BR
I12
IGNI TION SW
100A ALT
BATTERY
10A
GAUGE
2 1
F1 5
FUEL SENDER V5
VEHICLE
SPEED SENSOR
(
SPEED SENSOR)
FUEL
FUEL
WATER
TEMP.
TACHO
ABS
SEAT BELT
CRUI SE
(
*5)
OIL
BRAKE
BULB
CHE CK See ABS Sy st e m
<25±3><26±3>
See Unloc k and
Seat Belt
War ning Sy stem
< 34±2>
Se e Cr ui se
Co nt r o l Sys t em
< 24±3>
See En gi ne
Con t r o l S ys t em
<3±3><4±4><5±4>
B2
BRAKE FLUID
LEVEL SW J2
JUNCTION
CONNECTOR
P3
PARKI NG
BRAKE SWJ2
JUNCTION
CONNECTOR
REAR LIGHT FUSE BOX
From Daytime Running
Light Relay< 10±2>
From ABS ECU< 25±4>
P2
PARKING
BRAKE SW See Stop Light
System
< 8±1> < 9±1>See Char ging
System< 2±4>
See Int erior Light
Sys tem< 10±3> < 11±2>
<13±2><14±4>
To O/D Main SW
< 6±5> < 7±5>O/D OFF
CHARGE
OPEN DOOR
METER
ILLUMINATION
POWER
TURN RH
TURN LH
SRS
HIGH BEAM Se e SRS Sy st em
< 23±3>
See Headlight System
< 8±4> < 10±3> O1
OI L P RE SS U RE SW
10 B
5IP3
1Y±B Y±B
See Headlight Syst em
<8±4><10±3> Se e SRS Sy st e m
< 23±3>See Turn Signal and
Hazard Warning Light
Syst em< 9±4> < 18±4> From Elect ronic Contr olled
Transmiss ion Patt ern
Select SW<6±4><7±4> See Illumination
System< 15±2> See Inter ior Light
System< 10±3> < 11±2>
< 13±2> < 14±4> See Char ging
System< 2±4>
Fr om º STARTERº
Fuse< 1±2> < 2±2> Fr om Engine Control Module
(
Engine and Electr onic
Cont rolled Transmission ECU)
<3±6><4±6><6±3><7±2>
Fr om Engine Control Module
(
Engine ECU)
<5±4>J1
JUNCTION
CONNECTOR
FL MAIN
2. 0L
13 9 8 7 6 5 4 3 2 1101112
16 11 10 9 8 5 4 3 2 112131467 1510 9 8 7 6 5 4 3 2 1
BAC
GRAY BLUE
COMBI NATI ON METERCOMBINATION METER
B *3: 5S±FE *2 : 1MZ± FE *1 : Canada
40A
AM1
(
US A)
Intake manifold
LHLeft kick
panel
See Illumination
System< 15±2>13 A
L±R
(
*4) (
*4) (
*4)
*4 : w/o A/T Indicator
D D
G±O G± O
(
*4) (
*4)
J2
JUNCTION
CONNECTOR
C
C
12 A
GIP3 14SPEED R± L
6
1D
22
3D
10
3BR±L
V±Y
B±W
*5 : Malfunction Indicator
Lamp(
Check Engine)
(
*4)
(
*4) (
*2) BR
(
*2)
A
ABR
(
*3)
Fr om Engine Cont rol
Module(
Engine and
Electr onic Controlled
Tr ans mis sion ECU)
<3±6>From Igniter
< 2±3>
B(
*2)
Power
SourceC o mb in a tio n M e te r
W
A
A
J7
JUNCTION
CONNECTOR
1
W2
WATER TEMP. SENDER
1B 1A
1C
F10 A , F16 C,B
C9C8
C8 A ,C10 C,C9 BC10
A (
1 MZ± FE)
F10FUSE BOX
1 C F1 61
Ins trument panel
brace LHB (
5S±FE)
F10FUSE BOX (
*2)
(
*3)3D10
V±Y
Fr om Cr uise
Control ECU< 24±2>
3D 83B12
R± W
R± Y
From Cruis e Contr ol
ECU< 24±3>