Charging System - Generators & Regulators: Description

All models use a Nippondenso generator. Generator consists of a rotor, stator, rectifiers, front and rear covers and drive pulley. On 3.3 and 3.8L engines, generator uses a decoupler pulley. Decoupler pulley is a one-way clutch type pulley, which is designed to help reduce belt tension fluctuation, fatigue loads, noise and has a low sensitivity to electrical load. It is a non-servicable, non-lubricated pulley. If found faulty decoupler pulley must be replaced as an assembly. On all engines, generator is serviced as a complete unit only. Voltage regulation is controlled by Powertrain Control Module (PCM). Electronic Voltage Regulator (EVR) is not a separate component, but a circuit located within PCM. If EVR circuit is defective, PCM must be replaced.