Ford Mustang (1999-2004) Service Manual: Communications Network (Diagnosis and Testing)

Refer to Wiring Diagrams Cell 14 , Multiplex Communication Network for schematic and connector information.

Special Tool(s)

73 Digital Multimeter or equivalent 105-R0051
Worldwide Diagnostic System (WDS) 418-F224, New Generation STAR (NGS) Tester 418-F052, or equivalent diagnostic tool
Module Communications Network
General Specifications Communications Network Module Communications Network   ...

Principles of Operation
The vehicle has two module communications networks. The standard corporate protocol (SCP) which is an unshielded twisted pair cable (data bus plus, Circuit 914 [TN/OG] and data bus minus, Circuit ...

Other materials:

Pinpoint Tests
PINPOINT TEST A: THE ENGINE DOES NOT CRANK AND THE RELAY DOES CLICK Test Step Result / Action to Take A1 CHECK THE VOLTAGE TO THE STARTER RELAY YesGO to A2 . No REPAIR circuit 1050 (LG/VT) for an open. TEST the system for normal operation. ...

General operating tips
Manual Climate Control • To reduce fog build-up on the windshield during humid weather, select Defrost. You can also improve clearing by increasing the temperature and fan speed. • To reduce humidity build-up inside the vehicle, do not drive with the syste ...

Preliminary Inspection
The following items must be checked prior to beginning the diagnostic procedures: Know and Understand the Concern In order to correctly diagnose a concern, first understand the customer complaint or condition. Customer contact may be required in ord ...