LEXUS SC400 1991 Service Repair Manual

204
AUTO ANTENNA
Bc1
9Bc1 24 Bc1 23 Bc1 8 C
C
D
D
M
3614 11912134
2
1
4
5
8
6
3
78 10
5
2 7
+B IG ACC ANT+B AMP+B ANTB ANTA GND
UP DOWN S VCC SIG SGND
L±YY
R±G
BR
R±W L±B
L±GW±B
IC
SENSOR +
± P±G
P±L
Y±R
L±W
W±B
W±B
8
9
10 4
P±L
P±G
L±Y
B±R
GR
P±GP±L
Y±R
L±W
P±G
P±L
Y±R
L±W
RADIO AND TAPE RLAYER
AUTO ANTENNA MOTOR AND RELAY A3 2
B
G
R
L
B±Y
FROM POWER SOURCE SYSTEM
(
SEE PAGE 56 )
12 1 2
3
AUTO ANTENNA CONTROL RELAY
AUTO ANTENNA MOTOR
BM
2
7
1C
61E 10 C
3
A 3
A 8
A 1
B
10
B4
BV1
7
BV1
18
BV1
4
BV1
19
Bc1
10
Bc2
1 IE 1
2
IG2
3
IQ2
11
BV2
7 BV1 2IQ1
3
I31
L±Y
L±Y
L±Y
L±Y
L±Y
GR
GR
GR
GR
GR
GR R2 ,R4 ,R5
D
BAC
(
W/ CD PLAYER )
( W/O CD PLAYER )
8
A
B
A32
20A
RADIO
NO. 1 15A
ECU±IG
7. 5A
RADIO
NO. 2 GR
( W/O CD PLAYER )
( W/ CD PLAYER )
GR
( W/ CD PLAYER )
(W/O CD PLAYER )
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4
XXXX10 4
XXXX10
BDB
R2 R2
A32
12 3
45678 A
A32
13
8X A
R4
3
89
C
R5
X23 456
7891011121314
205
A32 AUTO ANTENNA MOTOR AND RELAY
3±GROUND : ALWAYS APPROX. 12 VOLTS
6±GROUND : APPROX. 12 VOLTS WITH IGNITION SW AT ON POSITION
8±GROUND : APPROX. 12 VOLTS WITH IGNITION SW AT ACC OR ON POSITION
7±GROUND : ALWAYS CONTINUITY
R 4(A), R 5(C) RADIO AND PLAYER
(A) 3, (C) 3±GROUND : APPROX. 12 VOLTS WITH IGNITION SW AT ACC OR ON POSITION
: PARTS LOCATION
CODESEE PAGECODESEE PAGECODESEE PAGE
A32A30R2A29 (W/ CD PLAYER)R 4B29 (W/ CD PLAYER)A32B30R 2D29 (W/O CD PLAYER)R 5C29 (W/O CD PLAYER)
: 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)
1C20FLOOR WIRE
1E20INSTRUMENT PANEL WIRE
: CONNECTOR JOINING WIRE HARNESS AND WIRE HARNESS
CODESEE PAGEJOINING WIRE HARNESS AND WIRE HARNESS (CONNECTOR LOCATION)
IE136ENGINE ROOM MAIN WIRE AND COWL WIRE (R/B NO. 4)
IG236INSTRUMENT PANEL WIRE AND COWL WIRE (R/B NO. 5)
IQ138INSTRUMENT PANEL WIRE AND CONSOLE BOX WIRE (UNDER THE INSTRUMENT PANEL CENTER)IQ238INSTRUMENT PANEL WIRE AND CONSOLE BOX WIRE (UNDER THE INSTRUMENT PANEL CENTER)
BV140FLOOR NO 3 WIRE AND CONSOLE BOX WIRE (UNDER THE INSTRUMENT PANEL CENTER)BV240FLOOR NO. 3 WIRE AND CONSOLE BOX WIRE (UNDER THE INSTRUMENT PANEL CENTER)
Bc140FLOOR NO 3 WIRE AND FLOOR WIRE (UNDER THE LEFT SIDE OF REAR SEAT CUSHION)Bc240FLOOR NO. 3 WIRE AND FLOOR WIRE (UNDER THE LEFT SIDE OF REAR SEAT CUSHION)
: GROUND POINTS
CODESEE PAGEGROUND POINTS LOCATION
BM40BACK PANEL CENTER
: SPLICE POINTS
CODESEE PAGEWIRE HARNESS WITH SPLICE POINTSCODESEE PAGEWIRE HARNESS WITH SPLICE POINTS
I3138CONSOLE BOX WIRE
SERVICE HINTS
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101
BACK±UP LIGHT
1H
12
IJ110
IK111
BU18
B15
B15BM
YY R±B R±B R±B R±B
W±B
R±B
W±B
W±B
44
55
10A
GAUGE
R±B
W±B
BACK±UP
LIGHT SW
BACK±UP LIGHT
[REAR COMB. LIGHT]
LH RH
R10 R11
FROM POWER SOURCE SYSTEM
(
SEE PAGE 56 )
4
9 R10, R11
GRAY B6 , N1
BA
X4
5
A
N1
12 B
B6 GRAY B
AAB 92 41
(A/T )
( M/T )
N 1 BACK±UP LIGHT SW
4±9 : CLOSED WITH SHIFT LEVER IN R POSITION
: PARTS LOCATION
CODESEE PAGECODESEE PAGECODESEE PAGE
B 6B26R1031
N 1A27R1131
: JUNCTION BLOCK AND WIRE HARNESS CONNECTOR
CODESEE PAGEJUNCTION BLOCK AND WIRE HARNESS (CONNECTOR LOCATION)
1H20COWL WIRE
: CONNECTOR JOINING WIRE HARNESS AND WIRE HARNESS
CODESEE PAGEJOINING WIRE HARNESS AND WIRE HARNESS (CONNECTOR LOCATION)
IJ136ENGINE WIRE AND COWL WIRE (RIGHT KICK PANEL)
IK136ENGINE WIRE AND INSTRUMENT PANEL WIRE (RIGHT KICK PANEL)
BU140FLOOR WIRE AND INSTRUMENT PANEL WIRE (LEFT KICK PANEL)
: GROUND POINTS
CODESEE PAGEGROUND POINTS LOCATION
BM40BACK PANEL CENTER
: SPLICE POINTS
CODESEE PAGEWIRE HARNESS WITH SPLICE POINTSCODESEE PAGEWIRE HARNESS WITH SPLICE POINTS
B1540FLOOR MAIN WIRE
SERVICE HINTS
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206
CELLULAR MOBILE TELEPHONE
21C6
A
A
A AB
BS1
4
Bc1
4Bc2 8Bc115 Bc2 7Bc1 6
AA
Bc1
18 B
8
2 2
PWR
PWR 11
R L±R L±R R±W
A
B
A
TAF+ RAF+ D1 6
8
7 3
8
7
2
5 D1
RAF±
RAF+
TA F±
TAF+
PH±
PH+
GND 5
16
4
24
6
1
14
15
17
3
11 16 2727 3 910
15A
TEL
15A
ECU±IG
FROM POWER SOURCE SYSTEM
(
SEE PAGE 56 )
B±RW±L
R R
G±B
IG
+B
GR±W
BRG G
B B
W
(
SHIELDED )
W±B
( SHIELDED )
W
( SHIELDED )
R±L
L±O
R±L
(
SHIELDED )
W
(
SHIELDED )
(
SHIELDED )
W±B
BR W
L±O
BR
V
G
TELEPHONE TRANSCEIVER AND SPEAKER RELAY
TELEPHONE
MICROPHONE
[COMB. SW] MOBILEPHONE M1
C16 T16 ,
T17
AB
MIC+ GND
W
EB BT1
20 BT1 19 TELEPHONE TRANSCEIVER
BS1
8
W±L
6 1
B35B8
I3 I8:USA
I26 : CANADA B36 B34 B35
BR BR BR
B36 B34 B35BR
BR
BR±W
BR±W
BR±W
BR±W
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207
Bc1
17 Bc1 5Bc116 Bc1 19 Bc 1 20 Bc24Bc23
BBA BAA B
B
BCC
12 18 23 10 5 3 9
4
10
451 1
6
5 22 25 19 6 2 1
D3 GND3 GND2 MUTE RLI+ RLI± RLO+
RLO±
D3 GND2 GND1 TEL+ TEL± SP±CUT
GND AUD+ AUD± SP+
SP±
188 4512 5
12
415
Y±B
L
B
W±B B±R B±YL±B
V
LG
LL LG
V
L
LG
V
B±R B±Y
L±B
B
Y
O
B B BR
R±B BR
R±B
TLMT FR+ FR±
MOBILEPHONE RADIO AND PLAYER
TELEPHONE TRANSCEIVER AND SPEAKER RELAY T16
,T17
M1 R4,
R5 ,R
6
A
B
B
D2 3 4
D2
11
6
R
L±Y
L±Y
Y
G±WR±W
L±W
B±W
SPEAKER RELAY
L
BV1
10 BV2 2BV21
(
W/O CD PLAYER )
(
W/O CD PLAYER )
( W/ CD PLAYER )
( W/ CD PLAYER )
15
STEREO POWER
AMPLIFIER
LG L
FR+ FR±
S14
1
2
IP1
10
IP1 1 BT1
5
BT1 6
L
LG
LG L LG
L
FRONT DOOR
SPEAKER RH
F1 2
TELEPHONE TRANSCEIVER
A
3
(
W/ CD PLAYER )
(
W/O CD PLAYER )
A
BC
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208
CELLULAR MOBILE TELEPHONE
T16 (A) TELEPHONE TRANSCEIVER AND SPEAKER RELAY
(A) 9±GROUND : ALWAYS APPROX. 12 VOLTS
(A) 10±GROUND : APPROX. 12 VOLTS WITH IGNITION SW AT ACC OR ON POSITION
(A) 11±GROUND : ALWAYS CONTINUITY
: PARTS LOCATION
CODESEE PAGECODESEE PAGECODESEE PAGE
C1628R 4A29 (W/ CD PLAYER)S1431
F1230R 5B29 (W/O CD PLAYER)T16A31
M 131R 6C29 (W/O CD PLAYER)T17B31
: 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)
1C20FLOOR WIRE
: CONNECTOR JOINING WIRE HARNESS AND WIRE HARNESS
CODESEE PAGEJOINING WIRE HARNESS AND WIRE HARNESS (CONNECTOR LOCATION)
IP138FRONT DOOR RH WIRE AND COWL WIRE (RIGHT KICK PANEL)
BS140ENGINE ROOM MAIN WIRE AND FLOOR WIRE (LEFT KICK PANEL)
BT140FLOOR WIRE AND COWL WIRE (LEFT KICK PANEL)
BV140FLOOR NO 3 WIRE AND CONSOLE BOX WIRE (UNDER THE INSTRUMENT PANEL CENTER)BV240FLOOR NO. 3 WIRE AND CONSOLE BOX WIRE (UNDER THE INSTRUMENT PANEL CENTER)
Bc140FLOOR NO 3 WIRE AND COWL WIRE (UNDER THE LEFT SIDE OF REAR SEAT CUSHIONBc240FLOOR NO. 3 WIRE AND COWL WIRE (UNDER THE LEFT SIDE OF REAR SEAT CUSHION
: GROUND POINTS
CODESEE PAGEGROUND POINTS LOCATION
EB34FRONT SIDE OF LEFT FENDER
: SPLICE POINTS
CODESEE PAGEWIRE HARNESS WITH SPLICE POINTSCODESEE PAGEWIRE HARNESS WITH SPLICE POINTS
I 338COWL WIREB3440FLOOR MAIN WIREI 838COWL WIREB3540FLOOR MAIN WIRE
I 2638ENGINE ROOM MAIN WIREB3640FLOOR NO. 3 WIRE
B 840FLOOR MAIN WIRE
SERVICE HINTS
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60
CHARGING
1E
81H 52
3D
2 2
3D
1
IG3
1 IJ2
13 EB2 2
IJ1
5
A
A
A
231
LIG S B 1B
IC REGULATOR
6
11
57 1412
15
WB W B
W
B±O
Y±G
Y±G
Y±G
Y±G
Y±G B±Y W
B B±Y
W B±Y
W
B
FUSE B LOCK
BATTERY 7. 5A
IGN
7. 5A
ENGINE 7. 5A
ALT
SENCING
CHARGE W ARNING
LIG HT
[COMB . METER]
120A ALT
60A MAIN
A1 0 ,A11
A
B
ALTERNATOR
F9
C12
FROM POWER SOURCE SYSTEM
(
SEE PAGE 56 )
Y±G
TO INTE GRATION
RELAY
( CANADA )
I14
Y±G
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61
A10(A) ALTERNATOR
(A) 1±GROUND : 13.9±15.1 VOLTS WITH ENGINE RUNNING AT 2000 RPM AND 25°C ( 77°F)
13.5±14.3 VOLTS WITH ENGINE RUNNING AT 5000 RPM AND 11 5°C ( 239 °F)
(A) 2±GROUND : 0±4 VOLTS WITH IGNITION SW AT ON POSITION AND ENGINE NOT RUNNING
: PARTS LOCATION
CODESEE PAGECODESEE PAGECODESEE PAGE
A10A26C1228
A11B26F 926
: 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)
1E20INSTRUMENT PANEL WIRE
1H20COWL WIRE
3D22INSTRUMENT PANEL WIRE
: CONNECTOR JOINING WIRE HARNESS AND WIRE HARNESS
CODESEE PAGEJOINING WIRE HARNESS AND WIRE HARNESS (CONNECTOR LOCATION)
EB234ENGINE WIRE AND ENGINE ROOM MAIN WIRE (FRONT SIDE OF R/B NO 2)EB234ENGINE WIRE AND ENGINE ROOM MAIN WIRE (FRONT SIDE OF R/B NO.2)
IG338INSTRUMENT PANEL WIRE AND COWL WIRE (RIGHT KICK PANEL)
IJ136ENGINE WIRE AND COWL WIRE (RIGHT KICK PANEL)IJ236ENGINE WIRE AND COWL WIRE (RIGHT KICK PANEL)
: SPLICE POINTS
CODESEE PAGEWIRE HARNESS WITH SPLICE POINTSCODESEE PAGEWIRE HARNESS WITH SPLICE POINTS
I1438COWL WIRE
X X
14 15 6 5
7
1
23 1
B
A
A10 A11 C12 F 9 BLACK BLACK
SERVICE HINTS
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169
CIGARETTE LIGHTER
1E
2
3A5
3F5
3F8
1E18
3A 1
1J1
IF
FROM POWER SOUR CE SYSTEM
(
SEE PAGE 56 )
15A
CIG
CIGARETTE
LIGHTER C11
L±R L±R
W±B W±B
W±B
4 2
C11 CIGARETTE LIGHTER
2±GROUND : APPROX. 12 VOLTS WITH IGNITION SW AT ACC OR ON POSITION
4±GROUND : ALWAYS CONTINUITY
: PARTS LOCATION
CODESEE PAGECODESEE PAGECODESEE PAGE
C1128
: JUNCTION BLOCK AND WIRE HARNESS CONNECTOR
CODESEE PAGEJUNCTION BLOCK AND WIRE HARNESS (CONNECTOR LOCATION)
1E20INSTRUMENT PANEL WIRE
1J20COWL WIRE
3A23INSTRUMENT PANEL WIRE3F23INSTRUMENT PANEL WIRE
: GROUND POINTS
CODESEE PAGEGROUND POINTS LOCATION
IF36LEFT KICK PANEL
2
4
C11
BLUE
SERVICE HINTS
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218COMBINATION METER
1E
81E 13
1E
12 1H 12
1J
1
3D
23A 3
3D
13D 11
1E
4
1G
9
1K
12
1E18 3D
13 3A
4
IG1
8BU1 4BU110 BU1 3
IG3
1 IK1
8
IK1
9IK2 24
IJ 1
5 1
IF BK
A
14 A 11 C 1
A
15 A 10 B 6A 8C8C 7C 9
C
21 C 22
132
L±R
FROM POWER SOURCE SYSTEM
(
SEE PAGE 56 )
4
Y
W±B W±B
B±O
W±R
YYY
Y±G Y±G Y±G Y±G B±Y
R
Y±B
B±W B±Y
B
Y±G
BR±B
BR
Y±G
B
B±Y
B±W Y±B
W±B B±Y
B±Y
W±B W±B
10A
GAUGE
15A
ECU±B
7. 5A
IGN
FUEL SENDER
IGNITER NO. 1 WATER TEMP.
SENDER
A
1A 2A 3
B
1 COMBINATION METER
TO CENTE R AIRB AG
SENSOR ASSEMBLY
TA CH
C12 , C1 3 , C 14
F1 7 ,
F18
I2 W3
ABC
B A SPEED SENSOR NO. 1
CHARGE
AIRBAG
HIGH BEAM
FUEL
FUEL
WATER. TEMP TACHO
S3
VCC OUT GND
2
B
7
R±W
15A
HEAD (
RH )
( FOR USA )
HEAD
( RH±LWR )
( FOR
CA NADA )
3B
2
B±Y
B±Y
TO CHECK CONNECTOR
( E/G )
3E
10
B±Y
TO CHECK CONNECTOR
( RM )
IK1
23
R
(
CANADA )
(USA )
TO DIMMER SW
[COMB. SW] R±W
IG1
9
IG1+ R
L±R
IK1
7
2 L
ALTERNAOR BR
IE1
12
R±W
IJ1
10
A1 0
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