Lexus ES300 (1997 year). Manual — part 447
–
DIAGNOSTICS
AIR CONDITIONING SYSTEM
DI–565
717
1997 LEXUS ES300 (RM511U)
3
Check harness and connector between A/C control assembly and air mix control
servomotor (See page
NG
Repair or replace harness or connector.
OK
Chek and replace A/C control assembly
(See page
).
I00360
From HEATER Fuse
A/C Control Assembly
IG
AIF
AIR
GND
26
A13
6
A13
7
A13
14
A13
L–Y
R
Air Inlet Control Servomotor
6
7
II
W–B
J/C
J15
A
A
W–B
J/C
DI–566
–
DIAGNOSTICS
AIR CONDITIONING SYSTEM
718
1997 LEXUS ES300 (RM511U)
DTC
42
Air Inlet Control Servomotor Circuit
CIRCUIT DESCRIPTION
The air inlet control servomotor is controlle by the A/C control assembly and moves the air inlet damper to
the desired position.
DTC No.
Detection Item
Trouble Area
42
Air inlet damper position sensor value does not change even if
A/C control assembly operates air inlet control servomotor.
Air inlet damper position sensor.
Harness or connector between air inlet control servomotor
and A/C control assembly.
A/C control assembly.
WIRING DIAGRAM
DI0DI–01
AC3023
I00358
REC
FRS
1
2
1
2
–
DIAGNOSTICS
AIR CONDITIONING SYSTEM
DI–567
719
1997 LEXUS ES300 (RM511U)
INSPECTION PROCEDURE
1
Actuator check.
PREPARATION:
(a)
Remove glove box to see and check the air inlet damper
operation.
(b)
Set to the actuator check mode (See page
).
(c)
Press the DEF switch and change it to step operation.
CHECK:
Press the DEF switch and check the operation air inlet damper.
OK:
Display Code
Air Inlet Damper
0 – 2
FRS
3
REC/FRS
4 – 9
REC
OK
Proceed to next circuit inspection shown on
matrix chart (See page
NG
2
Check air inlet control servomotor.
PREPARATION:
Remove air inlet control servomotor (See page
).
CHECK:
Connect positive (+) lead to terminal 2 and negative (–) lead to
terminal 1.
OK:
The lever moves smoothly to REC position.
CHECK:
Connect negative (–) lead to terminal 2 and positive (+) lead to
terminal 1.
OK:
The lever moves smoothly to FRS position.
NG
Replace air inlet control servomotor assembly.
OK
DI–568
–
DIAGNOSTICS
AIR CONDITIONING SYSTEM
720
1997 LEXUS ES300 (RM511U)
3
Check harness and connector between A/C control assembly and air inlet con-
trol servomotor. (See page
).
NG
Repair or replace harness or connector.
OK
Check and replace A/C control assembly.
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