Charging System - 5.0L 32V Ti-VCT — 2016 workshop reference 4034

Generator C102B Inline C1046

Does battery voltage change more than 0.5 volt?

Yes	INSPECT and REPAIR any corrosion in the generator B+ circuit or positive battery cable connections.
No	GO to A7

A7 CHECK THE VOLTAGE DROP IN THE VEHICLE GROUNDS

Connect Generator C102B. Start the engine. With the engine running at idle, headlamps on and heater blower on high, measure:

Positive Lead	Measurement / Action	Negative Lead
Generator case Charging System - 5.0L 32V Ti-VCT — original illustration 1, reference 4034Original colors & callouts · Select to enlarge		Charging System - 5.0L 32V Ti-VCT — original illustration 2, reference 4034Original colors & callouts · Select to enlarge

Positive Lead

Measurement /

Action

Negative Lead

Generator case

Charging System - 5.0L 32V Ti-VCT — original illustration 1, reference 4034Original colors & callouts · Select to enlarge

Charging System - 5.0L 32V Ti-VCT — original illustration 2, reference 4034Original colors & callouts · Select to enlarge

Is the voltage drop less than 0.5 volt?

Yes	GO to A8
No	INSPECT and REPAIR the engine ground, generator ground or the battery ground for corrosion.

A8 CHECK THE GENERATOR OUTPUT

Increase the engine rpm until the generator starts to generate output. With the engine running, measure and record:

Positive Lead	Measurement / Action	Negative Lead
		Ground

Charging System - 5.0L 32V Ti-VCT — original illustration 3, reference 4034Original colors & callouts · Select to enlarge

Is the voltage above 15.2 volts?

Yes	INSTALL a new generator. REFER to: Generator - 5.0L 32V Ti-VCT (414-02 Generator and Regulator, Removal and Installation).
No	GO to A9

A9 MONITOR THE GENERATOR COMMAND (GENCMD), GENERATOR MONITOR (GENMON) AND GENERATOR VOLTAGE DESIRED (GENVDSD) PIDS

Source reference 4034

2016 Mustang workshop publication supplied to Mustang Atlas. Original technical text and illustrations; HTML formatting by Mustang Atlas. Source page numbering is retained for traceability. Follow the configuration, revision, warnings, and cross-references in the material. About this edition.