Section 49 (Charging System - Generators & Regulators): Description
WARNING: This page is about a different car, the 2004 Ford Focus, 2003 Ford Focus, and 2002 Ford Focus. However, it is still accessible from the selected car via links, so may be relevant.
System consists of generator, integral voltage regulator, battery, warning indicator, related fuses and wiring. Warning indicator illuminates with ignition on, engine off as a bulb-check. The Powertrain Control Module (PCM) simultaneously controls and monitors generator output. The PCM is able to increase idle speed when current consumption is high or the battery is discharged. To minimize engine load when starting, PCM prevents generator output until the engine has started and progressively increases generator output.