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Climate Control System: Notes

WARNING: This page is about a different car, the 2006 Ford Pickup, 2006 Ford F550 Super Duty, 2006 Ford F450 Super Duty, and 2006 Ford Cab & Chassis. However, it is still accessible from the selected car via links, so may be relevant.
SPECIAL TOOL DESCRIPTION

G04644835
 Worldwide Diagnostic System (WDS)
Vehicle Communication Module (VCM) with appropriate adapters, or equivalent scan tool
G04644836
 R-134a Manifold Gauge Set
176-R032A or equivalent
G04644837
 Connector, Refrigerant Pressure Line
412-093 (T94P-19623-E)
G04644838
 Set, A/C Fittings
412-DS028 (D93L-19703-B) or equivalent
G04644839
 Refrigerant Leak Detector
216-00001 or equivalent
G04644840
 Pressure Tester
014-R1072 or equivalent
G04644841
 Fluke 77 III Automotive Meter
105-R0056 or equivalent

Vacuum Schematic - Manual A/C 

Fig 1: Identifying Vacuum Schematic - Manual A/C Components
G04644842Courtesy of FORD MOTOR CO.

Function Selector Switch Vacuum Connector End View 

Fig 2: Identifying Function Selector Switch Vacuum Connector End View
G04644843Courtesy of FORD MOTOR CO.
VACUUM APPLICATION CHART - MANUAL A/C

Switch Port Color Function Function Selector Switch Position
MAX A/C A/C PANEL OFF PNL/FLR FLOOR FLR/DEF DEF
1 White Recirc/Fresh and Heater Control Valve V NV NV V NV NV NV NV
2 Yellow Panel/Floor NV NV NV V NV V NV NV
3 Black Vacuum Source V V V V V V V V
5 Blue Panel/Floor NV NV NV V V V V NV
6 Red Panel/Defrost V V V NV V NV NV NV
V = Vacuum
NV= No Vacuum

Vacuum Schematic-EATC 

Fig 3: Identifying Vacuum Schematic - EATC Components
G04644844Courtesy of FORD MOTOR CO.

ATC Solenoid and Manifold Vacuum Connector End View 

Fig 4: Identifying ATC Solenoid And Manifold Vacuum Connector End View Components
G04644845Courtesy of FORD MOTOR CO.
VACUUM APPLICATION CHART - EATC

Port Color Function Manual Override Buttons
OFF PANEL PNL/FLR FLR FLR/DEF DEF
0 Black Vacuum Source V V V V V V
1 White Air Inlet(1) V V/NV V/NV V/NV V/NV NV
2 Yellow Panel/Floor V NV NV V NV NV
3 Blue Panel/Floor V NV V V V NV
4 Red Panel/Defrost NV V V NV NV NV
5 Gray Heater Control Valve(2) V V/NV V/NV V/NV V/NV V/NV
(1) The EATC system may be manually set to enable or disable the recirculation of cabin air by pressing the RECIRCULATION manual override button in all manual override modes except DEFROST.
(2) The automatic temperature control solenoid and manifold will supply vacuum and close the heater control valve depending on the EATC module settings and ambient conditions in any setting except OFF.
V = Vacuum
NV= No Vacuum
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