Does your vehicle have manual or automatic climate control ? You system is stuck in floor an defrost mode ?
Item
Part Number
Description
1
18A318
Vacuum control motor-floor/defrost door
2
-
Defrost air flow
3
18A478
Floor/defrost door
4
18476
Heater core
5
19860
Evaporator core
6
19805
Blower motor
7
-
Outside air inlet
8
19A813
Air inlet door
9
18A318
Vacuum control motor-air inlet door
10
-
Recirculated air inlet
11
18B545
Temperature blend door
12
18A559
Panel door
13
-
Panel air flow
14
18A318
Vacuum control motor-panel door
15
-
Floor air flow
16
-
Vacuum from the engine intake manifold
17
19A563
A/C vacuum check valve
18
19A566
Vacuum reservoir tank and bracket
19
19980
EATC control
Pull the control panel an check for vacuum
Item
Part Number
Description
1
White
Air inlet door
2
Yellow
Floor/defrost door
3
Red
Floor door
4
Blue
Panel door
5
Black
Source vacuum
6
-
Not used
VACUUM APPLICATIONS CHART-ELECTRONIC AUTOMATIC TEMPERATURE CONTROL
Switch Port
Vacuum Harness Hose Color
Func- tion
Manual Override Selector Buttons
OFF
MAX A/C
NORM A/C
VENT
FLOOR
FLOOR/ DEF
DEF
1
White
Air inlet
2
Yellow
Floor/ panel (partial)
3
Red
Full floor
4
Blue
Panel
5
Black
Source
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