1991 LEXUS SC400 light

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Page 4016 of 4087

LEXUS SC400 1991  Service Repair Manual 
158
POWER SEAT (w/ DRIVING POSITION MEMORY)
CURRENT IS ALWAYS APPLIED FROM THE DOME FUSE TO  TERMINAL SYSB  OF THE POWER SEAT ECU, FROM  DOOR FUSE TO
TERMINAL +B  OF THE POWER SEAT ECU AND FROM  STOP

Page 4017 of 4087

LEXUS SC400 1991  Service Repair Manual 
159
RETURN OPERATION
WHEN THE SEAT BACK IS RAISED UP FROM THE WALK±IN POSITION AND RETURNED TO THE UPRIGHT LOCK POSITION,
RECLINING LIMIT SWITCH NO. 1 OPERATES AND A SIGNAL IS INPUT TO TERMINAL RRSW

Page 4021 of 4087

LEXUS SC400 1991  Service Repair Manual 
165
1H
12
PRND 2 L
146578 9
B B BB BAA B AA A
2 1M
2 1 M
2
1
VC MSW E ASW TIS TIM+ TIM± VC TES E TEM+ TEM± Y
BR
R±W
GR
R±B
L
G±W G
W
R±W
BR
R±W BR R±W
V±Y
BR
V±W
P±L
R±B R±L
Y±R
L±B
L

Page 4042 of 4087

LEXUS SC400 1991  Service Repair Manual 
212
RADIO AND PLAYER (w/ CD PLAYER)
BV3
5BV3 4BV315 BV3 11 BV314 BV3 13 BV3 1BV38BV3 12 BV310 BV3 3BV32BV316 Bc1 25
I31 I31
I31
B16 B16
B25
D
3D 8D9D10 D 1D6D 11 D2D7D 4D5D12
A
1A 3A2A 6B1B 5B 8B2B6B

Page 4051 of 4087

LEXUS SC400 1991  Service Repair Manual 
188
SHIFT LOCK
1E
21E 17 1I 10
7 8 SHIFT LOCK
CONTROL SW
SHIFT LOCK
SOLENOID
TIMER
3
2 4
5
1
P1
±P
P2
SLS±
SLS+
1 2
IF 15A
CIG
15A
ECU±IG 15A
STOP
KEY INTERLOCK
SOLENOID
[IGNITION SW] STOP LIGHT
S

Page 4052 of 4087

LEXUS SC400 1991  Service Repair Manual 
189
WHEN THE IGNITION SW IS TURNED TO ACC POSITION THE CURRENT FROM THE  CIG FUSE FLOWS TO  TERMINAL 1 OF THE SHIFT
LOCK ECU, IN THE  ON POSITION, THE CURRENT FROM THE  ECU±IG FUSE FLOWS TO  TERMINA

Page 4056 of 4087

LEXUS SC400 1991  Service Repair Manual 
180
SRS AIRBAG
1G
10 1G 6
1G
11E 13
10 11
IK1
10 IK1 23
IK 1
1
4
+SL
5±SL
3+SR
2±SR
11D+
10D±
13E1
8E2
3E1
3E1
7
IG2 14
ACC 6
+B
12AB 4
TC 11
TC 5
AB
121212 7. 5A
IGN
15A
CIG 15A
ECU±B
FROM ENGIN

Page 4063 of 4087

LEXUS SC400 1991  Service Repair Manual 
98
STOP LIGHT
1I
10
1C
21E 12
3D
13
1C
10 1H
1 3A
4
1 2
B10 B15
+
±
+
±
BM BL
B15 B14
Bd1
2 Bc1
11
Bd1
1
Bc1
7
7
84
33 4 1
11
1
2
55 1 2
W±B W±B W±B G±W
G±W
W
G±W
G±W
G±W
Y
V±G Y
Y
Y
G±W