air filter LEXUS SC300 1991 Service Manual PDF

Page 7 of 11
AIR CONDITIONING EVAPORATOR ODOR ± AC001±97 September 12, 1997
LS 4001. Removal of parts.
('93±'94) (a) Remove the undercover.
NOTE:
Remove the front of ªAº clips.
Pull down the three ªBº clip areas
of the Undercover to remove.
(b) Remove the lamp.
(c) Remove the (2) wing nuts and the plate on the bottom of the cooling unit.
CAUTION:
The plate and wing nuts will be reused.
(d) Remove the (2) filters from the cooling unit.
2. Clean the Evaporator Follow the general procedures given on
page 2.
NOTE:
Location for the insertion of spray
nozzle is indicated by the red arrow
in the illustration.
WhereEverybodyKnowsYourName

AIR CONDITIONING EVAPORATOR ODOR ± AC001±97 September 12, 1997
LS 4003. Reinstallation of parts.
('93±'94)
(Continued) (a) Insert the (2) filters into the cooling
unit as shown in the illustration.
NOTE:
Insert a clean air filter with it's knob
facing downwards, then slide it forward
and install the second filter in the same
manner.
(b) Assemble the rubber insulator on the plate.
CAUTION:
To prevent the cooling unit from leaking
water, pull the three rubber projections
from the other side of the plate to make
sure that the rubber insulator seals
properly against the plate.
(c) Install the plate on the cooling unit and secure with the (2) wing nuts.
CAUTION:
To prevent water leaks, verify that the
cooling unit and plate are fully secure
before tightening the wing nuts.
NOTE:
Before installing the plate on the
cooling unit, coat the rubber insulator
with water for easier assembly.
(d) Reinstall the lamp.
(e) Reassemble the Undercover.
Page 8 of 11
WhereEverybodyKnowsYourName

Page 9 of 11
AIR CONDITIONING EVAPORATOR ODOR ± AC001±97 September 12, 1997
SC 3001. Removal of parts.
SC 400 (a) Remove two clips using the clip
remover then remove the undercover.
NOTE:
Pull down the clip areas (4 places) of
the Undercover to remove.
(b) Remove the (2) wing nuts and the plate on the bottom of the cooling unit.
CAUTION:
The plate and wing nuts will be reused.
(c) Remove the (2) filters from the cooling unit.
2. Clean the Evaporator Follow the general procedures given on
page 2.
NOTE:
Location for the insertion of spray
nozzle is indicated by the red arrow
in the illustration.
WhereEverybodyKnowsYourName

AIR CONDITIONING EVAPORATOR ODOR ± AC001±97 September 12, 1997
SC 3003. Reinstallation of parts.
SC 400
(Continued) (a) Insert the (2) filters into the cooling
unit as shown in the illustration.
NOTE:
Insert a clean air filter with it's knob
facing downwards, then slide it forward
and install the second filter in the same
manner.
(b) Assemble the rubber insulator on the plate.
CAUTION:
To prevent the cooling unit from leaking
water, pull the three rubber projections
from the other side of the plate to make
sure that the rubber insulator seals
properly against the plate.
(c) Install the plate on the cooling unit and secure with the (2) wing nuts.
CAUTION:
To prevent water leaks, verify that the
cooling unit and plate are fully secure
before tightening the wing nuts.
NOTE:
Before installing the plate on the
cooling unit, coat the rubber insulator
with water for easier assembly.
(d) Reassemble the Undercover.
Page 10 of 11
WhereEverybodyKnowsYourName

229
FRESH RECIRC
21
II1
7IE1 13
IQ1
13
IR2
5IR1 2IR11IG1 16 IR1 3 I27
B±Y
R±Y L±RL±Y
L±W
Y
B±R R±L
R±L
BR
B±YG±RLG
GR BR
R± Y
B±Y
R±Y
R±Y
GR
A
8A 7A9B 2A4C6A 3C 5C4A 10 B 23 B11
GR
R±Y
G
G±R B±Y
R±G
L±R L±Y
L±W
Y
B± R
VSV
(
FOR WATER VALVE )
AIR INLET CONTROL
SERVO MOTOR A33
V4
62 5 3 1
BR±W
A1 2 , A 1 3 ,A1 4
A/C CONTROL ASSEMBLY CABM
BLR LV HR A/C IN MGC IG+ WV MREC MFRS RDFGR TPI ST
LG
G±R
BR±W
2 1
NOISE FILTER
( FOR A/C SYSTEM )
N4
R±G R±L
IQ 1
16 IR1 6 Y±G
BR
Y± GBR BR
WhereEverybodyKnowsYourName

236
GROUND POINT
FRONT TURN SIGNAL
LIGHT LH
ENGINE HOOD
COURTESY SW
TRACTION PUMP AND
MOTOR
HEATER RELAY
ABS ACTUATOR RELAY
TELEPHONE
TRANSCEIVER
AND SPEAKER RELAY
ENGINE OIL LEVEL
WARNING SW
COMBINATION METER
(E1 )
EFI ECU
TRACTION ECU
CHECK CONNECTOR
(
E1 ) CORNERING LIGHT LH
FRONT SIDE MAKER
LIGHT LH
BRAKE FLUID LEVEL
SW
FRONT CLEARANCE
LIGHT LH
FRONT SIDE MAKER
LIGHT RH
FRONT CLEARANCE
LIGHT RH
ABS ACTUATOR
FRONT TURN SIGNAL
LIGHT RH
CRUISE CONTROL
ACTUATOR
OXYGEN SENSOR SUB
(
FOR USA SPEC. )
TDCL (
E1 )
WASHER LEVEL SW EFI MAIN RELAY
CORNERING LIGHT RH
A/C PRESSURE SW
(HI GH PRESSURE )
AIR FLOW METER POWER STERRI NG
PRESSURE SW
NOISE FI LTER
(
FOR IGNI TION SYSTEM ) E4
E10
E12 2
2
BS1 4 E4
E7
E1 E5
EB EA I23
I33
E1 6
I32
E20
E20
E20
IK2 24
ED EC IK1
1 BY1
5
W±B
W±B
W±B
W±B
W±B
W±B
W±B
W±B
W± B W±B
W±B
W±B
W±B
W±B
W±B
W±B
W±B
W±B
W±B
W±B
W±B BR
BR
W±B BR
BR
BR
W±B BR
BR±B BR BR
BR
BR
W± B
W± B
W± B
W± B
W± B
W± B
W± B
W±B
W±B
BR
BR
BR
BR BR
BR
BR
W±B
BR BR
BR
( EO1 )
( E11 )
( E1 )
( EO2 )
I27BR
(
S1 )
( E1 )
NOISE FILTER (
FOR
IGNITION SYSTEM )W±B
W/ TRACTION SYSTEM
NOI SE FILTER
(
FOR DEFOGGER SYSTEM )
W±B
W±B
WhereEverybodyKnowsYourName

567 8
22 LEXUS SC300(
Cont ' d )
12
II1
7
II1 2 IR2
5
IR2 4
IR2
IR1
IR1
IR1
IR1
IR2
IR2
IR2
IR2 1J
82
1E
22
5
1B
3A 3A
3A
3E
3H 3G 3B
3G
11
1E
IQ1
IQ1 IQ1 IQ1 IQ1 IQ1 II1
5
IR2
IR1
IR1
IR1
IN1
4
EB1
12 IR1
13
IR1
IR1 5
IQ117
IQ1 6
IQ1 21 12 31
IQ1 16
D
D
D
D
D
D
C
D D
D
E
E
D
IR1
4
D
C
C
D
D
E
IQ1
D
E C
D
C
E
E
E
D
D D D
D D
IQ1
C E
D
IR1
IR2
5IN11E
18
1J
1
EA IF
POWER
VOLUME AUTO
BCD SW
(Room Temp.
Contr ol SW )
M
EIR1
M
W
P± L
R±L
L±W
G± Y
G± R[ R±L
R± W
BR±W G±W BR
R±Y V
W±G BR
G± Y
Y
B±R R± G
B±Y
B±R Y
G±O V±R
V±W
L±W
BR±W G±W BR
R±Y V
L±Y
G± Y Y
B±R P± L
P
GR
G±R G Y±L
Y±G L±Y
LG±R
Y± R
L
W
L±B
Y± B P±B
W± B R
L±R
R± Y B
L±R L±O
B
R± Y L±R R
W± B P±B
L±B Y±L W
L
Y±G
LG±R
L±Y
Y±R Y± L BR
BR
BR
BR
BR
BR±W
BR
BR±W
BR±W BRBR±W
Y± GBRW
Y± L
P± B
W± B
R
BR±W
G±W BR
R±Y V
W±G BR
G± Y
Y
B±R P± L
P±B
P± B
BR
GR
BR
LG
R±L
R±L
B± Y B±Y
R± L B±Y
P± L
W
L±R
L±W
BR±W BR
BR±W
BR±W
GRBR
G±R
BR L±G
L±G
W±B
W±B W±B R
L±R
BR± W
BR
L±W
BR
BR± W
11
12
13
14
351 2 2
4
5
6
7
8
9
3
4
4
2
1
6
1
1
W/ V
MGCIGN
RDFGR ACC+B
E
DI N
MDEF
LP
MFACE TC
TPM
TW
TE
ST
TR
IG+
SET5
SET4
SET3
SET2
SET1
SAUTO
HR
S5
TP
SG
MC
MH
A/ CI N
LCKIN
LV
BL R
DOUT
TAM
TPI
MR EC
MF RS
4 5
23
8
17
8 7 3 2
16
15
14
13
12
4
9
18
22
20 3
2
7 11 9
10 25 5 8
8
1
2
3
3
2
1 9 9
5
18
8 6
10 6
8 10 1 9 13
5 9 6 7 1 15 10 15
1 4 3
127
11
7
Automatic Air Conditioner
3 1 6 5
13 3 3 5
5
12
6 19 IR2
10
DEF FACE
A3
A/C PRESSURE SW
V4
VSV(
for Water Valve )
A15
A/C CONTROL
SW AND
RADIO SW
To TDCL< 2 ±4 >
A1
A/C AMBIENT
TEMP. SENSOR
A3 3
AI R INLET CONTROL
SERVO MOTOR
To Engine and ECT ECU
<2±7>
From I gniter
< 1±5>
From Defogger
Relay< 15±3>
To TDCL< 2±4>
From Rheostat < 5±7> < 6±7> A28
AIR VENT MODE
CONTROL SERVO
MOTOR
W6
WATER TEMP. SENSOR
(
for A/C System )
A16
A/C EVAPORATOR
TEMP. SENSOR
A20
A/C SOLAR SENSOR
A19
A/C ROOM TEMP. SENSOR 15A
CIG
10A
DOME
A12 , A13 , A14
ECD
A/ C CONTROL ASSEMBLY
II1 II1
1
4
BR
G±Y
7
BR
RECIRC FRESH
3H
12 IK110
To Check Connec tor
< 2±3>BR BR
P±B P±B
Fr ont side
of right
fender Lef t kic k panel
1
2
R±LN4
NOI SE FILTER C
3
E
6
WhereEverybodyKnowsYourName