All about Ford Mondeo

Charging system - general information and precautions
Engine electrical systems / Charging system - general information and precautions

General information
The charging system includes the alternator, an internal voltage regulator, a nocharge (or ignition) warning light, the battery, and the wiring between all the components. The charging system supplies electrical power for the ignition system, the lights, the radio, etc. The alternator is driven by the auxiliary drivebelt at the front (righthand end) of the engine.

The purpose of the voltage regulator is to limit the alternators voltage to a preset value.

This prevents power surges, circuit overloads, etc., during peak voltage output.

The charging system doesnt ordinarily require periodic maintenance. However, the drivebelt, battery and wires and connections should be inspected at the intervals outlined in Chapter 1.

The dashboard warning light should come on when the ignition key is turned to positions II or III, then should go off immediately the engine starts. If it remains on, or if it comes on while the engine is running, there is a malfunction in the charging system (see Section 11). If the light does not come on when the ignition key is turned, and the bulb is sound (see Chapter 12), there is a fault in the alternator.

Be very careful when making electrical circuit connections to a vehicle equipped with an alternator, and note the following: (a) When reconnecting wires to the alternator from the battery, be sure to note the polarity.

(b) Before using arc-welding equipment to repair any part of the vehicle, disconnect the wires from the alternator and the battery terminals.

(c) Never start the engine with a battery charger connected.

(d) Always disconnect both battery leads before using a battery charger.

(e) The alternator is driven by an engine drivebelt which could cause serious injury if your hand, hair or clothes become entangled in it with the engine running.

(f) Because the alternator is connected directly to the battery, it could arc or cause a fire if overloaded or shorted-out.

(g) Wrap a plastic bag over the alternator, and secure it with rubber bands, before steam-cleaning or pressure-washing the engine.

(h) Never disconnect the alternator terminals while the engine is running.

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