WorksheetsAlternator part 2
Total questions: 11
Worksheet time: 6mins
What should be done before attempting any charging system tests?
A 20 minute road test
Ensure the battery is fully charged and passes testing
Remove the belt and spin the alternator by hand
Replace the alternator, as it is the most likely cause of charging system issues
What controls the amount of current that flows from the alternator to the battery?
(TWO ANSWERS)
The voltage regulator
The rectifier
The battery's condition and state of charge
The amperage control module
The two circuits in a charging system that should be tested prior to replacing parts are:
(TWO ANSWERS)
The field circuit
The output circuit
The rectifier power source
The alternator speed sensor circuit
An alternator has high resistance in the cable from the battery to the alternator output terminal.
What would be the customer complaint/issue?
A no-start/no-crank, but runs ok all day after being boosted
An overcharged battery causing sulfur smell and smoke
Poor charging performance and battery light on
All of the above
When checking voltage drop from the battery negative post to the alternator housing/case, what should the meter read?
12 volts
6 volts
less than 0.3 volts
Depends on the charging system configuration
A customer complains that his 2021 Chevrolet 1500 charging voltage will drop to 12 when on the highway.
When you bring it in your bay, you verify that it is indeed at 12 volts
What is the next step?
Test the high current circuits
Test the field circuit with a meter as per the service information
Follow the pinpoint test step by step
This could be normal operation. Turn on loads such as headlights and defroster, and see if the voltage increases.
What component does the work in a rectifier?
Transistors
Capacitors
A rotor speed sensor
Diodes
A visual inspection of the charging system should include:
Ensuring the belt is tight and in good condition
Ensuring there is no corrosion on cable ends
Checking the alternator housing for possible physical damage, water damage, etc
All of the above
How does a regulator control voltage output?
By opening and closing the output circuit
By switching the field circuit on and off
By controlling the speed of the alternator
Any of the above
Where is the field coil located in a starter?
In the stator
In the regulator
In the rotor
Any of the above
How many stator windings are in a typical alternator?
1
2
3
6
