Checking the regulated voltage (check the voltage regulator (2.4 L))

This test determines whether the electronic voltage regulator controls the output voltage of the generator.

Preparing for inspection

Before starting the test, perform the checks listed below.

Verify that your car battery is fully charged. The procedure for checking the battery, see "Battery."

Check the tension of the alternator drive belt.

Turn the ignition switch to ?�OFF?�.

Disconnect the (-) battery terminals.

Connect a digital voltmeter between the terminal ?�S (L)?� generator and "weight".

Connect (+) wire of the voltmeter to the ?�S (L)?� generator, then (-) lead of the voltmeter to a suitable "weight" (to the body) or to the (-) terminal of the battery.

Disconnect the output wire from the terminal "B" of the generator.

Connect an ammeter (DC, with a range of 0-100 A) in series between the output of the "B" and the generator disconnected output wire.

Connect the (-) lead of the ammeter to the disconnected output wire.

Connect the tachometer control in accordance with the instructions of the manufacturer of the device. Connect the (-) terminals of the battery (Fig. 7.21).

The verification procedure

Turn the ignition key to ?�ON?� position and make sure that the voltmeter coincide with the specified voltage.

If the meter reads 0, then either there is a break between terminal ?�S (L)?� generator and (+) terminal of the battery or fuse burned out.

Start the engine. Turn off all lights and electrical accessories.

Set the engine speed of about 2500 ^min -1. Read the voltmeter when the alternator current is 10 A or less.

Analysis of the results

If the voltmeter reads the standard value regulated voltage shown in the table, then the voltage regulator is defective. If the voltmeter does not correspond to the range of nominal values, or faulty voltage regulator, or generator.

Once validated, gradually lower the revolution of the crankshaft of the engine to idle speed, then turn the ignition switch to ?�OFF?�.

Disconnect the (-) battery terminals.

Disconnect the ammeter, voltmeter and check the tachometer.

Connect the output wire to the conclusion "B" of the generator.

Attach the wire to the (-) terminal of the battery.