Page 3849 of 4087

234
AUTOMATIC AIR CONDITIONER
: CONNECTOR JOINING WIRE HARNESS AND WIRE HARNESS
CODESEE PAGEJOINING WIRE HARNESS AND WIRE HARNESS (CONNECTOR LOCATION)
EB134ENGINE WIRE AND ENGINE ROOM MAIN WIRE (FRONT SIDE OF R/B NO. 2)
IE136ENGINE ROOM MAIN WIRE AND COWL WIRE (R/B NO. 4)
IE236ENGINE ROOM MAIN WIRE AND COWL WIRE (BEHIND GLOVE BOX)
IG136INSTRUMENT PANEL WIRE AND COWL WIRE (R/B NO. 5)
II136ENGINE WIRE AND A/C WIRE (BEHIND GLOVE BOX)
IJ236ENGINE WIRE AND COWL WIRE (RIGHT KICK PANEL)
IK136ENGINE WIRE AND INSTRUMENT PANEL WIRE (RIGHT KICK PANEL)
IN138ENGINE ROOM MAIN WIRE AND A/C WIRE (BEHIND GLOVE BOX)
IQ138INSTRUMENT PANEL WIRE AND CONSOLE BOX WIRE (UNDER THE INSTRUMENT PANEL CENTER)
IR138CONSOLE BOX WIRE AND A/C SUB WIRE (BEHIND GLOVE BOX)IR238CONSOLE BOX WIRE AND A/C SUB WIRE (BEHIND GLOVE BOX)
: GROUND POINTS
CODESEE PAGEGROUND POINTS LOCATION
EA34FRONT SIDE OF RIGHT FENDER
EB34FRONT SIDE OF LEFT FENDER
ED34REAR SIDE OF INTAKE MANIFOLD
IF36LEFT KICK PANEL
IJ36RIGHT KICK PANEL
: SPLICE POINTS
CODESEE PAGEWIRE HARNESS WITH SPLICE POINTSCODESEE PAGEWIRE HARNESS WITH SPLICE POINTS
E1134ENGINE ROOM MAIN WIREI2838CONSOLE BOX WIREE1834ENGINE WIREI2938CONSOLE BOX WIRE
I2738A/C WIREI3238ENGINE WIRE
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Page 3850 of 4087
235
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Page 3851 of 4087
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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Page 3852 of 4087

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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Page 3853 of 4087
![LEXUS SC400 1991 Service Repair Manual
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 S LEXUS SC400 1991 Service Repair Manual
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 S](/manual-img/36/57051/w960_57051-3852.png)
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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Page 3854 of 4087
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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Page 3855 of 4087
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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Page 3856 of 4087

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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