Ford Mustang (1999-2004) Service Manual: Climate Control System (Diagnosis and Testing)

Refer to Wiring Diagrams Cell 54 , Air Conditioner/Heater for schematic and connector information.

Special Tool(s)

Connector, Refrigerant Pressure Line 412-093 (T94P-19623-E)
Set, A/C Fittings 412-DS028 (014-00333, D93L- 19703-B) or equivalent
Vacuum Pump Kit 416-D002 (D95L-7559-A) or equivalent
Breakout Box, EEC-V Control System 418-049 (014-00950, T94L-50- EEC-V)
Worldwide Diagnostic System (WDS) 418-F224, New Generation STAR (NGS) Tester 418-F052, or equivalent diagnostic tool
Pressure Test Kit 014-R1072 or equivalent
77 III Automotive Meter 105-R0056 or equivalent
R-134a Manifold Gauge Set 176-R032A or equivalent
Refrigerant Leak Detector 216-00001 or equivalent

Vacuum Schematic-Manual Climate Control System

Vacuum Schematic-Manual Climate Control System

 

Vacuum Schematic-Manual Climate Control System

Vacuum Schematic-Manual Climate Control System

Function Selector Switch Vacuum Connector

Function Selector Switch Vacuum Connector

 

Function Selector Switch Vacuum Connector

Function Selector Switch Vacuum Application Chart

Function Selector Switch Vacuum Application Chart

V=Vacuum

NV=No Vacuum

System Air Flow Description
MAX A/C When MAX A/C is selected: The air inlet door vacuum control motor is at full vacuum, closing off outside air and admitting only recirculated air. The panel/defrost door vacuum cont ...

Inspection and Verification
1. Verify the customer's concern by operating the climate control system to duplicate the condition. 2. Inspect to determine if one of the following mechanical or electrical concerns apply: Visu ...

Other materials:

Component Tests
Ball Joint Inspection 1. Raise and support the vehicle. 2. Prior to performing any inspection of the ball joints, inspect the wheel bearings. 3. Position a safety stand beneath the front suspension lower arm (3079) to be tested. 4. While an assistant pul ...

Fuel System (Description and Operation)
Component Location   WARNING: Do not smoke or carry lighted tobacco or open flame of any type when working on or near any fuel-related components. Highly flammable mixtures are always present and may be ignited, resulting in possible personal injury ...

Parking Brake Cable Tension Release
1. CAUTION: If any component in the parking brake system requires repair or if the rear axle housing (4010) is removed, the cable tension must be released. Place the parking brake control (2780) in the released position. 2. Remove the console. 3. W ...