1991 LEXUS SC400 remote control

164POWER TILT AND POWER TELESCOPIC
1H
15 1K 13 2
1H
10 1B
5
AAB
B±R
L±W
RR
30A
POWER 15A
ECU±IG10A
DOME
4118 +B I G ECU ± B TILT AND POWER TELESCOPIC ECU
FROM POWER SOURCE SYSTEM
(
SEE PAGE 56 )
BA,T11
T10
1
1
A
7B 10 B 1B9B 8B 3B12 B 11
IF IH
I5
I5
B27
BT1
12 BT1 11
BT1
13 IF2 13 IF119 IF1 13 IF212
Ba1
9Ba1 4
1H
13
1J
1 9
10
18
178 3214
B9
1D
10 BU1
6
GN D UWSW SO
SI ECU±E M1 M2 MRY
BR±B
W±B
B W
Y
W±B
W±B
BR±B
BR±B
BR±B
B
W
B
W
BR±B
BR±B
BR±B
BR BR±B
P
R
R±Y
R±Y R P
BR±B
W±B
W±B
SSR±
SO SI
UNLOCK WARNING SW
[IGNITION SW]
POWER SEAT ECU
DRIV ING POSITION MEMORY
AND RETURN SW
(
SHIELDED )
(
SHIELDED )
(
SHIELDED )
NO. 1
NO. 2SET
P11
I15
D12
Ba1
13 2
B8
I3
BR±B
W
BR±B16
SI
REMOTE CONTROL
MIRROR ECU R7
W
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166POWER TILT AND POWER TELESCOPIC
THIS SYSTEM OPERATES WITH BOTH THE TILT FUNCTION AND TELESCOPIC FUNCTION DRIVEN AUTOMATICALLY BY THE MOTOR
AND CONTROLLED BY THE ECU. THE STEERING CAN BE ADJUSTED STEPLESSLY FORWARD AND BACK, AND UP AND DOWN, TO
PROVIDE THE MOST SUITABLE STEERING POSITION FOR EASY DRIVING, WITH AUTOMATIC MOVEMENT OF THE STEERING TO A
POSITION WHICH FACILITATES GETTING IN AND OUT OF THE VEHICLE.
THE DRIVER CAN HAVE THE MOST APPROPRIATE DRIVING POSITION MEMORIZED BY OPERATING THE POWER SEAT AND REMOTE
CONTROL MIRROR TOGETHER WITH THE TILT AND POWER TELESCOPIC STEERING.
CURRENT IS ALWAYS APPLIED THROUGH THE
POWER FUSE TO TERMINAL +B OF THE TILT AND POWER TELESCOPIC ECU AND
THROUGH THE DOME FUSE TO TERMINAL BATT OF TILT AND POWER TELESCOPIC ECU.
WITH THE IGNITION SW TURNED ON, THE CURRENT FLOWS FROM ECU±IG FUSE TO TERMINAL IG AND FROM GAUGE FUSE TO
TERMINAL 9 OF A/T INDICATOR SW.
1. MANUAL TILT OPERATION
WHEN THE IGNITION KEY IS INSERTED INTO THE IGNITION KEY CYLINDER (UNLOCK WARNING SW ON), A SIGNAL IS INPUT TO
TERMINAL UWSW OF TILT AND POWER TELESCOPIC ECU. IF THE MANUAL SW IS PUSHED TO THE ªTILT UPº SIDE, CURRENT
FLOWS FROM TERMINAL VC OF TILT AND POWER TELESCOPIC ECU TO TERMINAL MSW OF TILT AND POWER TELESCOPIC ECU
PASSING THROUGH THE MANUAL SW. (THE ECU DETECTS THE MANUAL SW POSITION BY THE VOLUME OF CURRENT.)
AS A RESULT, TILT AND POWER TELESCOPIC ECU OPERATES AND THE CURRENT TO TERMINAL +B OF ECU FLOWS FROM
TERMINAL TIM+ " TERMINAL 1 OF COMB. SW " TERMINAL 2 OF TILT CONTROL MOTOR " TERMINAL 1 " TERMINAL 10 OF COMB.
SW "TERMINAL TIM± OF TILT AND POWER TELESCOPIC ECU " TERMINAL GND2 "GROUND , AND THE TILT UP FUNCTION
OPERATES AS LONG AS THE MANUAL SW IS PUSHED TO THE ªTILT UPº SIDE.
FOR ªTILT DOWNº OPERATION, WHEN THE MANUAL SW IS PUSHED TO THE DOWN SIDE, THE CURRENT FLOWING FROM ECU TO
MOTOR FLOWS TO TERMINAL TIM± OF TILT AND POWER TELESCOPIC ECU "TERMINAL 10 OF COMB. SW "TERMINAL 1 OF TILT
CONTROL MOTOR "TERMINAL 2 "TERMINAL 1 OF COMB. SW "TERMINAL TIM+ OF TILT AND POWER TELESCOPIC ECU, SO THE
MOTOR ROTATES IN THE REVERSE DIRECTION TO TILT UP OPERATION, AND TILT DOWN OPERATION OCCURS ONLY WHILE THE
MANUAL SW IS BEING PUSHED.
2. MANUAL TELESCOPIC OPERATION
WHEN THE IGNITION KEY IS INSERTED INTO THE IGNITION KEY CYLINDER (UNLOCK WARNING SW ON), A SIGNAL IS INPUT TO
TERMINAL UWSW OF TILT AND TELESCOPIC ECU. WHEN THE MANUAL SW IS PUSHED TOWARD ªTELESCOPIC SHORTº SIDE,
CURRENT FLOWS FROM TERMINAL VC OF TILT AND POWER TELESCOPIC ECU TO TERMINAL MSW OF TILT AND POWER
TELESCOPIC ECU THROUGH THE MANUAL SW.
AS A RESULT, THE TILT AND POWER TELESCOPIC ECU OPERATES AND THE CURRENT TO TERMINAL +B OF TILT AND POWER
TELESCOPIC ECU FLOWS FROM TERMINAL TEM+ OF TILT AND POWER TELESCOPIC ECU "TERMINAL 1 OF COMB. SW "
TERMINAL 2 OF TELESCOPIC CONTROL MOTOR "TERMINAL 1 "TERMINAL 4 OF COMB. SW "TERMINAL TEM± OF TILT AND
POWER TELESCOPIC ECU " TERMINAL GND2 "GROUND , AND ªTELESCOPIC SHORTº OPERATION OCCURS AS LONG AS THE
MANUAL SW IS PUSHED THE TO ªTELESCOPIC SHORTº SIDE.
FOR ªTELESCOPIC LONGº OPERATION, WHEN THE MANUAL SW IS PUSHED TO THE TELESCOPIC LONG SIDE, CURRENT FLOWING
FROM TILT AND POWER TELESCOPIC ECU TO THE MOTOR FLOWS THROUGH TERMINAL TEM± OF TILT AND POWER TELESCOPIC
ECU " TERMINAL 4 OF COMB. SW "TERMINAL 1 OF TELESCOPIC CONTROL MOTOR "TERMINAL 2 " TERMINAL 1 OF COMB. SW
" TERMINAL TEM+ OF TILT AND POWER TELESCOPIC ECU "TERMINAL GND2 "GROUND .
AS A RESULT, THE MOTOR ROTATES IN REVERSE TO THE TELESCOPIC SHORT MODE AND TELESCOPIC LONG OPERATION
OCCURS AS LONG AS THE MANUAL SW IS PUSHED TO THE ªTELESCOPIC LONGº SIDE.
3. AUTO AWAY OPERATION
WHEN THE IGNITION SW IS TURNED FROM ON TO OFF, THE CURRENT STOPS FLOWING FROM ECU±IG TO TERMINAL IG OF TILT
AND POWER TELESCOPIC ECU AND IS INPUT AS A SIGNAL THAT THE IGNITION SW IS OFF. WHEN THE AUTO SW IS TURNED ON, AN
ªAUTO SW ONº SIGNAL IS INPUT TO TERMINAL ASW OF TILT AND POWER TELESCOPIC ECU.
IF THE IGNITION KEY IS REMOVED FROM THE IGNITION KEY CYLINDER (UNLOCK WARNING SW OFF) AT THIS TIME, A SIGNAL IS
INPUT FROM TERMINAL UWSW OF TILT AND POWER TELESCOPIC ECU. ALSO, THE TILT POSITION SENSOR (COMB. SW) INPUTS
INTO TERMINAL TIS OF THE TILT AND TELESCOPIC ECU A SIGNAL OF THE STEERING TILT POSITION JUST BEFORE THE IGNITION
SW (FOR UNLOCK WARNING) IS TURNED FROM ON TO OFF.
AS A RESULT, THE TILT AND POWER TELESCOPIC ECU OPERATES AND THE CURRENT TO TERMINAL +B OF TILT AND POWER
TELESCOPIC FLOWS FROM TERMINAL TIM+ OF TILT AND POWER TELESCOPIC ECU "TERMINAL 1 OF COMB. SW "TERMINAL 2
OF TILT CONTROL MOTOR "TERMINAL 1 "TERMINAL 10 OF COMB. SW "TERMINAL TIM± OF TILT AND POWER TELESCOPIC ECU
" TERMINAL GND2 "GROUND , CAUSING THE MOTOR TO ROTATE SO THAT ªTILT UPº OPERATION OCCURS AUTOMATICALLY.
AT THE SAME TIME, THE CURRENT FROM TERMINAL +B OF TILT AND POWER TELESCOPIC ECU TO TERMINAL TEM+ FLOWS FROM
TERMINAL 1 OF COMB. SW "TERMINAL 2 OF TELESCOPIC CONTROL MOTOR "TERMINAL 1 "TERMINAL 4 OF COMB. SW "
TERMINAL TEM± OF TILT AND POWER TELESCOPIC ECU "TERMINAL GND2 "GROUND , CAUSING THE MOTOR TO ROTATE SO
THAT TELESCOPIC SHORT OPERATION OCCURS ON AUTO AND WITH TILT UP OPERATION OCCURRING SIMULTANEOUSLY ON
AUTO, AUTO AWAY OPERATION OCCURS.
SYSTEM OUTLINE
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170
REMOTE CONTROL MIRROR (w/ DRIVING POSITION MEMORY)
1H
31H 8
9 8 10 15 14 12 5 13 6 3 1 2 74
3126549 IF1
3IF1 4IF2 9IF11IF118 IF1 2IF110 IP2 3IP116 IP2 1IP22IP19IP113 IP1 12
MM M
M
MV MH M+ VSRL VCL HSRL E1 E1 HSRR VCR VSRR M+ MH MV
9456213
B±W
R±G
W± RGR
BR±Y
BR±B
O
L±G
R±G
G±Y
B±W
B±W L±W
R±G G
LG±R LG
LG±B B±W B±W
L±W
R±GG± Y
BR±Y
BR±B
O
L±G
R±G
G± Y
L±W R±G
G
LG±R LG
LG±B
ACC +B
MVL MHL M+L VSRL HSRL E1 HSRR VC VSRR M+R MHR MVR REMOTE CONTROL MI RROR ECU
7. 5A
RADIO NO. 2
15A
ECU±B
REMOTE CONTROL MIRROR LH REMOTE CONTROL MIRROR RH FROM POWER SOURCE
SYSTEM(
SEE PAGE 56 )
I11
I11
R17
R16 R7
,
R8
B±W B
A
A
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171
310
LH RH
29
LH RH
812
LEFT
RIGHT
UP
DOWN
SE LE C T S W OPERATI ON SW
REMOTE CONTROL MIRROR SW
IG 214
3
1
2
6
4
5
11 16
IF119
IF1
13
IF2
12 Ba1
4Ba1 9
BR±B
W± B
W±B
W
WB Y±B
LG
Y±R
LG±B
P±BGR
FROM POWER SEAT ECU (
SI )
FROM POWER SEAT ECU (
SO )
M1
M2
MRY
SI
SO
ECUE
DSW SI
GND SWO2 SWO1 SWO4 SWI1 SWI2
SWO3
TI LT AND POWER TELESCOPI C ECU DRIVING POSITION
MEMORY AND
RE TURN SW
NO. 1
NO. 2
SET
RE MOTE CONTROL MIRROR E CUB
A
R18
T10 D12
R7 ,
R8 EB
IF1
17 IF2 20 IF1 16 IF28IF1 20 IF219
Y±B
L±R
Y±R
LG±B
P±BGR
A B
IF 3 6
1D
10
1D
8
1J
1
1I
16 I5 B9
I4
IF213
BT1
13
BT1
12
Ba113
BU1
6
IH
BT1
11 B27
BR±B BR±B
BR±B B
WW
B
W± B
R±B
BR±B
WB
R±Y R
R
R±Y
BR±B
BR R±W
W±B
W±B
W
BR±B
BR±B
BR±B
PP
289111123 3 BR±B
BR±B
BR±B
DOOR OPEN DETECTION SW LH
D10
(
SHIELDED )
(
SHIELDED )
(
SHIELDED )
BR±B
I3
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172
REMOTE CONTROL MIRROR (w/ DRIVING POSITION MEMORY)
CURRENT IS ALWAYS APPLIED TO TERMINAL +B OF REMOTE CONTROL MIRROR ECU THROUGH THE ECU±B FUSE.
WHEN THE IGNITION SW IS TURNED TO ON OR ACC POSITION, THE CURRENT FLOWS TO TERMINAL ACC OF THE REMOTE
CONTROL MIRROR ECU THROUGH THE RADIO NO. 2 FUSE.
REMOTE CONTROL MIRROR OPERATION
WHEN THE IGNITION SW IS TURNED TO ON OR ACC POSITION, THE REMOTE CONTROL MIRROR ECU OPERATES. WHEN THE
SELECT SW OF THE REMOTE CONTROL MIRROR SW IS MOVED TO THE LH POSITION AND THE OPERATION SW IS MOVED TO
ªLEFTº SIDE, A SIGNAL IS INPUT FROM TERMINAL SWO2 OF REMOTE CONTROL MIRROR ECU TO TERMINAL 2 OF REMOTE
CONTROL MIRROR SW " TERMINAL 12 "TERMINAL SWI2 OF ECU.
AS A RESULT, THE CURRENT TO TERMINAL +B OF ECU FLOWS FROM TERMINAL MHL OF ECU "TERMINAL 1 OF REMOTE
CONTROL MIRROR LH " MOTOR " TERMINAL 2 "TERMINAL M+L OF ECU "TERMINAL GND "GROUND , ROTATING THE MOTOR
TO ADJUST THE ANGLE OF THE LEFT SIDE OF THE OUTER MIRROR (DRIVER'S).
TO CHANGE THE ANGLE OF THE RIGHT SIDE OF THE MIRROR, THE OPERATION SW OF THE REMOTE CONTROL MIRROR SW IS
MOVED TO THE ªRIGHTº SIDE.
THEN, A SIGNAL IS INPUT FROM TERMINAL SWO2 OF REMOTE CONTROL MIRROR ECU " TERMINAL 2 OF REMOTE CONTROL
MIRROR SW " TERMINAL 8 "TERMINAL SWI1 OF ECU. AS A RESULT, THE CURRENT TO TERMINAL +B OF REMOTE CONTROL
MIRROR ECU FLOWS FROM TERMINAL M+L OF ECU " TERMINAL 2 OF REMOTE CONTROL MIRROR " MOTOR " TERMINAL 1 "
TERMINAL MHL OF ECU " TERMINAL GND " GROUND, CAUSING THE ANGLE OF THE OUTER MIRROR (DRIVER'S) TO CHANGE ON
THE RIGHT SIDE.
THE MOVEMENT TO OTHER POSITIONS OCCURS SIMILARLY, SO ONLY THE CURRENT FLOW TO EACH MOTOR IS SHOWN:
SELECT SW RH POSITION, OPERATION SW LEFT POSITION
TERMINAL +B OF REMOTE CONTROL MIRROR ECU "TERMINAL MHR "TERMINAL 1 OF REMOTE CONTROL MIRROR " MOTOR "
TERMINAL 2 "TERMINAL M+R OF ECU "TERMINAL GND "GROUND .
SELECT SW RH POSITION, OPERATION SW RIGHT POSITION
TERMINAL +B OF REMOTE CONTROL MIRROR ECU "TERMINAL M+R "TERMINAL 2 OF REMOTE CONTROL MIRROR " MOTOR "
TERMINAL 1 "TERMINAL MHR OF ECU " TERMINAL GND "GROUND .
SELECT SW LH POSITION, OPERATION SW UP POSITION
TERMINAL +B OF REMOTE CONTROL MIRROR ECU " TERMINAL MVL " TERMINAL 3 OF REMOTE CONTROL MIRROR " MOTOR "
TERMINAL 2 "TERMINAL M+L OF ECU "TERMINAL GND "GROUND .
SELECT SW LH POSITION, OPERATION SW DOWN POSITION
TERMINAL +B OF REMOTE CONTROL MIRROR ECU "TERMINAL M+L "TERMINAL 2 OF REMOTE CONTROL MIRROR " MOTOR "
TERMINAL 3 "TERMINAL MVL OF ECU " TERMINAL GND "GROUND .
SELECT SW RH POSITION, OPERATION SW UP POSITION
TERMINAL +B OF REMOTE CONTROL MIRROR "TERMINAL MVR "TERMINAL 3 OF REMOTE CONTROL MIRROR " MOTOR "
TERMINAL 2 "TERMINAL M+R OF ECU "TERMINAL GND "GROUND .
SELECT SW RH POSITION, OPERATION SW DOWN POSITION
TERMINAL +B OF REMOTE CONTROL MIRROR "TERMINAL M+R "TERMINAL 2 OF REMOTE CONTROL MIRROR " MOTOR "
TERMINAL 3 "TERMINAL MVR OF ECU " TERMINAL GND "GROUND .
THE NUMBER OF TURNS OF EACH MOTOR (AMOUNT OF MOVEMENT OF EACH PART OF THE MIRROR) IS DETECTED BY THE
POSITION SENSORS AND INPUT TO THE ECU, MAKING IT POSSIBLE TO PERFORM MEMORY AND RETURN FUNCTIONS FOR THE
MIRROR POSITION USING THE DRIVING POSITION MEMORY AND RETURN SWITCH.
SYSTEM OUTLINE
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173
D10 DOOR LOCK MOTOR, DOOR UNLOCK DETECTION SW AND DOOR OPEN DETECTION SW LH
3±6 : CLOSED WITH FRONT DOOR LH OPEN
D12 DRIVING POSITION MEMORY AND RETURN SW
4±3 : CLOSED WITH SET SW ON
2±3 : CLOSED WITH MEMORY NO. 1 SW ON
1±3 : CLOSED WITH MEMORY NO. 2 SW ON
R18 REMOTE CONTROL MIRROR SW 2±12: CONTINUITY WITH SELECT SW AT LH POSITION AND OPERATION SW AT LEFT POSITION
2±8: CONTINUITY WITH SELECT SW AT LH POSITION AND OPERATION SW AT RIGHT POSITION
9±12: CONTINUITY WITH SELECT SW AT RH POSITION AND OPERATION SW AT LEFT POSITION
9±8: CONTINUITY WITH SELECT SW AT RH POSITION AND OPERATION SW AT RIGHT POSITION
3±12: CONTINUITY WITH SELECT SW AT LH POSITION AND OPERATION SW AT UP OPERATION
3±8: CONTINUITY WITH SELECT SW AT LH POSITION AND OPERATION SW AT DOWN POSITION
10±12: CONTINUITY WITH SELECT SW AT RH POSITION AND OPERATION SW AT UP POSITION
10±8: CONTINUITY WITH SELECT SW AT RH POSITION AND OPERATION SW AT DOWN POSITION
R 7 REMOTE CONTROL MIRROR ECU
4±GROUND : ALWAYS APPROX. 12 VOLTS
7±GROUND : APPROX. 12 VOLTS WITH IGNITION SW AT ACC OR ON POSITION
11±GROUND : ALWAYS CONTINUITY 9±GROUND : APPROX. 12 VOLTS WITH REMOTE CONTROL MIRROR LH AT UP OPERATION
8±GROUND : APPROX. 12 VOLTS WITH REMOTE CONTROL MIRROR LH AT LEFT OPERATION
13±GROUND : APPROX. 5 VOLTS
12±GROUND : ALWAYS CONTINUITY 2±GROUND : APPROX. 12 VOLTS WITH REMOTE CONTROL MIRROR RH AT UP OPERATION
1±GROUND : APPROX. 12 VOLTS WITH REMOTE CONTROL MIRROR RH AT LEFT OPERATION
: PARTS LOCATION
CODESEE PAGECODESEE PAGECODESEE PAGE
D1030R 8B29R1831
D1230R1631T1029
R 7A29R1731
: JUNCTION BLOCK AND WIRE HARNESS CONNECTOR
CODESEE PAGEJUNCTION BLOCK AND WIRE HARNESS (CONNECTOR LOCATION)
1D20FRONT DOOR LH WIRE
1H
1I20COWL WIRE
1J
: CONNECTOR JOINING WIRE HARNESS AND WIRE HARNESS
CODESEE PAGEJOINING WIRE HARNESS AND WIRE HARNESS (CONNECTOR LOCATION)
IF136FRONT DOOR LH WIRE AND COWL WIRE (LEFT KICK PANEL)IF236FRONT DOOR LH WIRE AND COWL WIRE (LEFT KICK PANEL)
IP138FRONT DOOR RH WIRE AND COWL WIRE (RIGHT KICK PANEL)IP238FRONT DOOR RH WIRE AND COWL WIRE (RIGHT KICK PANEL)
BT140FLOOR WIRE AND COWL WIRE (LEFT KICK PANEL)
BU140FLOOR WIRE AND INSTRUMENT PANEL WIRE (LEFT KICK PANEL)
Ba142FLOOR WIRE AND FRONT SEAT LH WIRE (UNDER THE FRONT LH SEAT)
: GROUND POINTS
CODESEE PAGEGROUND POINTS LOCATION
IF36LEFT KICK PANEL
IG36INSTRUMENT PANEL BRACE LH
IH36UNDER THE ASHTRAY LH
: SPLICE POINTS
CODESEE PAGEWIRE HARNESS WITH SPLICE POINTSCODESEE PAGEWIRE HARNESS WITH SPLICE POINTS
I 3I1138COWL WIRE
I 438COWL WIREB 940FLOOR MAIN WIRE
I 5B2746FRONT SEAT LH WIRE
SERVICE HINTS
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174
REMOTE CONTROL MIRROR (w/ DRIVING POSITION MEMORY)
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175
REMOTE CONTROL MIRRORS (w/o DRIVING POSITION MEMORY)
1D
11
MM MM
132
2
3
1
12
92 103 118
IF2
20 IF2 9
1J
1 1D
10
IP1
13 IP1 12 IP1 9 LG±R
W±B W±B
W±B
LG±R
LG±R
LG±R LG±R
LG±R
R±Y
R±Y R±Y
LG
LG±B LG±B LG LG
LG±B LG
BR±B
LG±B
BR±B BR±B
LH RH LH RH
LEFT
RIGHT
UP
DOWN
LEFT
UP
RIGHT
DOWN
SELECT SW OPERATION SW
REMOTE
CONTROL
MIRROR LH REMOTE
CONTROL
MIRROR RH
GR
7. 5A
RADIO NO. 2
REMOTE CONTROL MIRROR SW
B32
R18
R17
R16 FROM POWER SOURCE SYSTEM
(
SEE PAGE 56 )
IF2
8
IF
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