1991 LEXUS SC400 relay

220
COMBINATION METER*1 : W/ TRACTION CONTROL
* 2 : W/O TRACTION CONTROL
2
1
3D
4 3A
6 1E
11
1B5
IK1
12 IK1 11 IK1 13 IK114
IK2
10
OPEN DOOR
RE AR LIGHT
BRAKE
ECT POWER P
R
N
D
C
11 A
17
C
12 A 1A2A 3A4
A
12 B 8
1 2
2 1
EA
10A
DOME
G±O
W±B
W±B
RR
R
G±O
B
GR
R±B
L
G±W
G±W L
R±B
GR
V±R
R±W
V±R
R±W
B
W±B R±W FROM
NEUTRAL START SW
(
A/T )
CLUTCH S TART SW (
M/T )
FROM A/T INDICATOR SW
FROM POWER SOURCE SYSTEM
(
SEE PAGE 56 )
DIODE
(
FOR PARKING
BRAKE )
PARKING
BRAKE SW
COMBINATION METER
P3 D2
C12
,C13 , C1 4
ABC
2
B
4
G±O
FROM ECT PATTERN
SELECT SW
COOLANT LEVEL
TO INTEGRATION
RELAY
BU1
9 B
11
TO LIGHT FAILURE
SENSOR V±G V±G
V±R IE1
1
IG1 20
A
13
R±WI7
I4
2 1
B
DIODE
(
FOR B RAK E
FLUID LEVEL SW )
D1
IG1
19
3E
2
3C
2
R±W
1BRAKE FLUID
LEVEL SW B1 (*2 ) B
IK2
23
R±W R±W
R±W R±W
( CANADA )
(
USA )
R±W
R±W
( USA )
B
(CA NADA )
( *1 )
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221
1E
19 1E 14
1H
11 1H 7
IK1
16 IK1 17
2
L
LH
TURN
A
5A 16 B 17 B16
C
23
1 IK2
5 IK2
4
SEAT BELT
ABS
TRAC
TRAC OFF
A
19 A 7B15 B 5B1
W±B
LG±R W
V
LG±R
TO ABS AND
TRACTION ECU
(
IND )
TO ABS AND
TRACTION ECU
( WT ) G
W G±Y
G±B
G±B G±Y WG
R±W
FROM
A/T INDICATOR SW
OIL PRESSURE SW RH
Y±B
O2
COMBINATION METER C12 , C 1 3
,C14
ABC
I23
WW
TO TDCL (
TRC )
IK 2
9
Y±B
I22
L±Y
IO1
7
L±Y
I23
L
L±Y
TO ENGINE AND
ECT ECU
(
W ) L±Y
TO CHAK
CONNECTOR (
W )
L
TO ABS AND
TRACTION ECU
(
WA ) L
TO CHECK
CONNECTOR (
LP )
IK2
2
L
W
1E
1
SEAT BELT WARNING
RELAY [INTEGRATION RELAY] CHECK ENGINE
B
3
L±Y
IK1
20
FROM TURN
SIGNAL FLASHER
3D
10
3A2
3A 1
W±B
G±O
OIL
G±O
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222
COMBINATION METER
O/D OFF
CRUISE CONTROL
3A
10 3A 9
3C
1
IG1
5 1I
3
A
5
G±O
G±O
G±O
C
5C 4C3C2
413
A
20 A 18
3C
43B 4
3D
63D 53D5
3F
4
3E
1
IG1
15
TO ENGINE AND
ECT ECU (
OD2 )
TO CRUISE
CONTROL
ECU
(
PI )
TO TDCL
( A/D )
TO O/D MAIN SW TO TDCL (
ECT )
RHEOSTAT
2 87
G± O
G±O
G±O
FROM POWER SOURCE SYSTEM(
SEE PAGE 56 )
7. 5A
PANEL (CANADA )
( CANADA )
(
USA )
I16
INTEGRATION
RELAY
COMBINATION METER C12 , C 1 3 , C1 4 ABC
Y±B
BR
Y±V L±B
L
G±O
Y±B
Y±B
Y±B
W±B
W±B 12
GR±R
GR±R
GR±R
GR±R WASHER
B
9
IE 1
10 IG1
18
1
EB
W1
WASHER LEVEL SW P±L
P±L
P±L
W±B
3H 1
G±O
TO A/T INDICATOR LIGHT
( FOR SHIFT LEVER )
ILLUMINATION I8
L
L
TO A/C AND AUDIO
ILLUMINATION
A
2 R9
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223
COMBINATION METER
B 1 BRAKE FLUID LEVEL SW
1±2 : CLOSED WITH FLOAT DOWN
P 3 PARKING BRAKE SW
1±GROUND : CLOSED WITH PARKING BRAKE LEVER PULLED UP
O 2 OIL PRESSURE SW
1±GROUND : CLOSED WITH OIL PRESSURE BELOW APPROX. 0.2 KG/CM2 (2.8 PSI, 20 KPA)
W 3 WATER TEMP. SENDER
1±GROUND : APPROX. 226
(50 °C, 122 °F)
APPROX. 25
(11 5 °C, 239 °F)
E 6 ENGINE OIL LEVEL WARNING SW
1±2 : CLOSED WITH FLOAT UP AND ENGINE OIL TEMP. AT BELOW APPROX. 55°C ( 131 °F)
OPEN WITH FLOAT DOWN AND ENGINE OIL TEMP. AT BELOW APPROX. 60°C ( 140 °F)
F18(A) FUEL SENDER
2±3 : APPROX. 3
AT FUEL FULL
APPROX. 11 0
AT FUEL EMPTY
C14 (C) COMBINATION METER
1±GROUND : APPROX. 12 VOLTS WITH IGNITION SW AT ON POSITION
12±GROUND : APPROX. 12 VOLTS WITH IGNITION SW AT ST POSITION AND SHIFT LEVER AT P OR N RANGE
10±GROUND : ALWAYS CONTINUITY
22±GROUND : ALWAYS CONTINUITY
11±GROUND : ALWAYS APPROX. 12 VOLTS
: PARTS LOCATION
CODESEE PAGECODESEE PAGECODESEE PAGE
A1026E 626R 929
B 126F17B30S 327
C12A28F18A30S22B29
C13B28I 227S23A29
C14C28I16A29T1529
D 128O 227W 127
D 228P 329W 327
: RELAY BLOCKS
CODESEE PAGERELAY BLOCKS (RELAY BLOCK LOCATION)
219ENGINE COMPARTMENT LEFT
: JUNCTION BLOCK AND WIRE HARNESS CONNECTOR
CODESEE PAGEJUNCTION BLOCK AND WIRE HARNESS (CONNECTOR LOCATION)
1B20ENGINE ROOM MAIN WIRE
IE20INSTRUMENT PANEL WIRE
1G20COWL NO. 2 WIRE
1H
1I20COWL WIRE1J20COWL WIRE
1K
3A
3B
3C
3D22INSTRUMENT PANEL WIRE
3E
3F
3H
SERVICE HINTS
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29
Position of Parts in Instrument Panel
H 7 Hazard SW S 10 Shift Lock ECUS 11 Step Light
I 14 Ignition Key Cylinder Light S 12 Stop Light SW
I 15 Ignition SW, Unlock Warning SW and Key Inter Lock Solenoid S 22 Short Connector
I 16 Integration Relay S 23 Short Connector S 24 Seat Heater SW (for M/T)
K 3 Kick Down SW T 6 TDCL (Total Diagnostic Communication Link)
L 1 Luggage Compartment Door Open SW T 7 Telescopic Position Sensor T 8 Theft Deterrent and Door Lock Control ECU
N 4 Noise Filter (for A/C System) T 9 Theft Deterrent and Door Lock Control ECU T 10 Tilt and Power Telescopic ECU
O 5 O/D Main SW T 11 Tilt and Power Telescopic ECU T 12 Traction Cut SW and Seat Heater SW (for A/T)
P 2 PPS ECU T 13 Traction ECU (for A/T)
P 3 Parking Brake SW T 14 Traction ECU (for A/T) T 15 Trip SW and Theft Deterrent Indicator Light
R 2 Radio and Player
R 3 Radio and Player W 6 Water Temp. Sensor (for A/C System)
R 4 Radio and Player (w/ CD Player) W 7 Wireless Door Lock Main SW
R 5 Radio and Player (w/o CD Player)
R 6 Radio and Player (w/o CD Player)
R 7 Remote Control Mirror ECU
R 8 Remote Control Mirror ECU
R 9 Rheostat
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30
ELECTRICAL WIRING ROUTING
Position of Parts in Body
A 30 ABS Speed Sensor Rear LH D 10 Door Lock Motor, Door Unlock Detection SW and
A 31 ABS Speed Sensor Rear RH Door Open Detection SW LH
A 32 Auto Antenna Motor and Relay D 11 Door Lock Motor, Door Unlock Detection SW andDoor Open Detection SW RH
C 20 CD Automatic Changer D 12 Driving Position Memory and Return SW
C 21 CD Automatic Changer
C 22 Choke Coil F 11 Front Door Speaker LH F 12 Front Door Speaker RH
D 4 DAY/NIGHT Shift SW F 14 Fuel Lid Opener Solenoid
D 5 Door Courtesy Light LH F 15 Fuel Pump
D 6 Door Courtesy Light RH F 16 Fuel Pump ECU
D 7 Door Key Lock and Unlock SW LH F 17 Fuel Sender
D 8 Door Key Lock and Unlock SW RH F 18 Fuel Sender
D 9 Door Lock Control SW RH H 8 High Mount Stop Light (w/o Rear Spoiler)
H 9 High Mount Stop Light (w/ Rear Spoiler)
L 2 Licence Plate Light
L 3 Light Failure Sensor
L 4 Luggage Compartment Door Opener Motor
L 5 Luggage Compartment Key Unlock SW
L 6 Luggage Compartment Light SW
L 7 Luggage Compartment Light
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31
Position of Parts in Body
M 1 Mobilephone R 16 Remote Control Mirror LH
M 2 Moon Roof Control Relay R 17 Remote Control Mirror RH
M 3 Moon Roof Control SW R 18 Remote Control Mirror SW
M 4 Moon Roof Motor and Limit SWS 13 Stereo Power Amplifier
O 8 Oxygen Sensor Sub (for California) S 14 Stereo Power Amplifier
P 4 Power Window Control SW RH T 16 Telephone Transceiver and Speaker Relay
P 5 Power Window Master SW and Door Lock Control SW LH T 17 Telephone Transceiver and Speaker Relay
P 6 Power Window Motor LH T 18 Tension Reducer Solenoid LH
P 7 Power Window Motor RH T 19 Tension Reducer Solenoid RH
P 20 Personal Light V 5 Vanity Light LH
R 10 Rear Combination Light LH V 6 Vanity Light RH
R 11 Rear Combination Light RH
R 12 Rear Speaker LH W 8 Wireless Door Lock ECU
R 13 Rear Speaker RH W 9 Woofer Speaker
R 14 Rear Window Defogger (+) W 10 Woofer Speaker Amplifier
R 15 Rear Window Defogger (±)
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102
CORNERING LIGHT
1I
21I 1
55
55
4
4
4 LH
RH
IF EA
OFF
TAIL
HEAD
1K
5
1J
1 IE 1
17 IE1 18
1 2 1
2
E4
4 2
25
10 118
1 13
13 3
12
5
13
6 W±G
R±L
G±W G±R
G±R
R±Y
R±GP±Y R±L
R±G P±Y
W±B W±B R±G
W±B
W±B
W±B R±Y
( CANA DA ) (
USA )
FROM POWER SOURCE SYSTEM
(
SEEPAGE56 )
20A
TURN
CORNERING LIGHT
RELAY
FROM HEADLIGHT
RE LA Y
CORNERING LIGHT SW
[COMB. SW]
COMBINATION
SW
CORNERING LIGHT INTEGRATION
RELAY INTEGRATION
RELAY
LIGHT
CONTROL SW
DIODE
C16
I16 I16
C15C6 C7
LH RH
( USA )
(
CA NA DA )
A
B
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