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:

Principles of Operation
NOTE: Battery power and ground must be remove before disconnecting the GEM connectors to avoid setting false codes. Power Locks Operation The power locks feature allows the customer to lock and unlock the doors via momentary switches located on t ...

General information
WARNING: Extended idling at high engine speeds can produce very high temperatures in the engine and exhaust system, creating the risk of fire or other damage. WARNING: Do not park, idle, or drive your vehicle on dry grass or other dry ground cover. The emissio ...

Shift Patterns
Upshifts Transmission upshifting is controlled by the powertrain control module (PCM). The PCM receives inputs from various engine or vehicle sensors and driver demands to control shift scheduling, shift feel and torque converter clutch (TCC) opera ...