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CHARGING SYSTEM EEA -21 REGULATED VOLTAGE TEST The purpose of this test is to check that the electronic volt- PREPARATION 1. Prior to the test, check the following items and correct 2. Turn ignition switch to "OFF". 3. Disconnect the battery ground cable. 4. Connect a digital voltmeter between the "B" terminal of the alternator and ground. Connect the (+) lead 5. Disconnect the alternator output wire from the alter- 6. Connect a DC ammeter (0 to 150A) in series between 7. Attach the engine tachometer and connect the battery Voltmeter Ammeter Check engine L Ioad S or DUMMY EBRF020A TEST 1. Turn on the ignition switch and check to see that the Voltage: Battery voltage If it reads 0V, there is an open circuit in the wire be- 2. Start the engine. Keep all lights and accessories off. 3. Run the engine at a speed of about 2,500 rpm and RESULT 1. If the voltmeter reading agrees with the value listed in REGULATING VOLTAGE TABLE Voltage regulator ambient temperature C ( F) Regulating voltage (V) -20 (-4) 20 (68) 60 (140) 14.2 ~ 15.4 2. Upon completion of the test, reduce the engine speed 3. Disconnect the battery ground cable. 4. Remove the voltmeter and ammeter and the engine 5. Connect the alternator output wire to the alternator 6. Connect the battery ground cable. |