Service Manuals, User Guides, Schematic Diagrams or docs for : . Car Manuals Toyota Sienna 1998-2003 Approved FSM 05 acsy cidtc41
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DI-736
DIAGNOSTICS - AIR CONDITIONING SYSTEM
DI3FI-06
DTC 41 Front Air Mix Damper Control Servomotor
Circuit
CIRCUIT DESCRIPTION
The front air mix damper control servomotor is controlled by the A/C control assembly and moves the air mix
damper to the desired position.
DTC No. Detection Item Trouble Area
S Front air mix damper control servomotor.
Air mix damper position sensor value does not change even if S Front air mix damper position sensor.
41 A/C control assembly operates air mix damper control servo- S Harness or connector between front air mix control servomo-
motor. tor and A/C cotrol assembly
S A/C cotrol assembly
WIRING DIAGRAM
Driver Side J/B No. 1 J/B No. 3 A/C cotrol assembly
R-Y 1 HEATER 3 9 20 10
R-L 3C
1K 1R 3C A25 IG
Engine Room J/B No. 2
2 AM1 2 2
1 W
1K 2 1 1B 2L 2D
F8 FL Block W
FL MAIN ALT INP
I12
Ignition Switch B-L
W-L A32
Air Mix Control Servomotor 7
4 IG1 AM1 2 4
MH A23 MH
V-G
6
Battery MC 5 A23 MC
GR-V
I21112
2001 SIENNA (RM787U)
Author : Date : 890
DI-737
DIAGNOSTICS - AIR CONDITIONING SYSTEM
INSPECTION PROCEDURE
1 Actuator check
PREPARATION:
(a) Warm up the engine.
(b) Set to the actuator check mode (See page DI-689 ).
(c) Press the DEF switch and change it to step operation.
CHECK:
Press the DEF switch and check the operation of the air mix damper and the condition of the blower.
OK:
Display Code Air Mix Damper Condition
0-3 0 % (Fully closed) Cool air comes out
4-5 50 %
6-9 100 % (Fully opened) Warm air comes out
OK Proceed to next circuit inspection shown on
problem symptoms table (See page DI-697 ).
NG
2001 SIENNA (RM787U)
Author : Date : 891
DI-738
DIAGNOSTICS - AIR CONDITIONING SYSTEM
2 Check front air mix damper control servomotor.
PREPARATION:
Remove front air mix damper control servomotor (See page
5 4
AC-90 ).
CHECK:
Connect positive (+) lead to terminal 4 and negative (-) lead to
terminal 5.
CHECK:
Connect positive (+) lead to terminal 5 and negative (-) lead to
(+) (-)
To "COOL" terminal 4.
5 4 OK:
The lever turns smoothly to "COOL" side.
OK:
The lever turns smoothly to "WARM" side.
(+) (-)
To "WARM"
NG Replace front air mix damper control servomo-
tor assembly.
I21006
OK
3 Check harness and connector between A/C cotrol assembly and front air mix
damper control servomotor assembly (See page IN-31 ).
NG Repair or replace harness or connector.
OK
Check and replace A/C cotrol assembly.
2001 SIENNA (RM787U)
Author : Date : 892
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