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ELECTRICAL SYSTEM TESTING

The electrical system is an important component in the overall operation of your vehicle. Think about it, the electrical system powers the defroster, cruise control, headlights, power windows, power seats, computer, switches, wipers, interior lighting, etc… 2 important parts in the electrical system are the alternator and the starter.

Alternator

The alternator consists of a spinning set of electrical windings called a rotor, a stationary set of windings called a stator, a rectifier assembly, a set of brushes to maintain electrical contact with the rotor, and a pulley. All of these parts except the pulley are contained in an aluminum housing. Today’s alternators use compact, electronic voltage regulators that may be housed inside the alternator or the voltage regulator function may be handled by the vehicle’s power train control module (PCM).

Purpose: The alternator generates direct current for recharging the battery and for powering vehicle electrical loads.

Starter

The starter consists of an electric motor that powers a starter drive-a special pinion gear designed to engage with the ring gear of the flywheel or torque converter. Many of today’s starters also use a gear reduction to increase the torque output of the starter. The starter is usually mounted to the rear of the engine or the front of the transmission housing.

Purpose: The starter cranks the engine when the ignition switch is turned to the start position. The starter drive uses an overrunning clutch that freewheels if the engine starts while the starter is still engaged, reducing the likelihood of damage to the starter drive and ring gear.

STS Tire & Auto Centers provide the following electrical system services to keep your vehicle running safely & keep you on the road:

• Electrical System Testing

• Alternator Replacement

• Starter Replacemen