Study 4 of Engine Charging System

= Now we Study the Regulated Voltage test=
= The purpose of this test is to check that the electronic voltage regulator control voltage correctly.
Preparation:

1. Prior to test, check the following items and correct as necessary.
   Check that battery installed on the vehicle is fully charged. The battery checking method is described in the section inspect “Battery”.
   Check the alternator drive belt tension. the belt tension check method is described in the section “Inspect drive belt”
2. Turn ignition switch to off.
3. Disconnect the battery ground cable.
4. Connect the digital voltmeter between the “B” terminal of the alternator and ground. Connect the (+) lead of the voltmeter to the “B” terminal of the alternator. Connect the (-) lead to the good ground or the battery (-) terminal.
5. Disconnect the alternator output wire from the alternator “B” terminal.
6. Connect the DC ammeter (0 to 15A) in series between the “B” terminal and disconnected output wire. Connect the (-) lead wire of the ammeter to the disconnected output wire.
7. Attach the engine tachometer and connect the battery ground cable.

Read more Study 3