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:

Pinpoint Tests
PINPOINT TEST A: THE SPEED CONTROL IS INOPERATIVE Test Step Result / Action to Take A1 CHECK THE SPEED CONTROL SERVO VOLTAGE AND GROUND YesGO to A3 . No GO to A2 . Key in OFF position. Disconnect: Speed Control Servo C122. ...

Inspection and Verification
1. The interior lighting system is a generic electronic module (GEM) controlled system. 2. Verify the customer concern by operating the interior lighting system. 3. Visually inspect for the following obvious signs of mechanical and electrical damage. ...

Wheel Bearing Check
1. WARNING: The electrical power to the air suspension system must be shut off prior to hoisting, jacking or towing an air suspension vehicle. This can be accomplished by turning off the air suspension switch. Failure to do so can result in unexpected infla ...