Questions and Answers
Starter motors operate on the principle that _____
The armature rotates from a strong magnetic field toward a weaker magnetic field
Technician A says that a defective solenoid can cause a starter whine. Technician B says that a defective starter drive can cause a starter whining noise. Which technician is correct?
The neutral safety switch is located _____
Between the ignition switch and the starter solenoid
The brushes are used to transfer electrical power between _____
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The faster a starter motor rotates _____
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Normal cranking speed of the engine is about _____
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The starter motor can produce up to ________ horsepower.
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Which starting system component uses a small amount of current to control a large amount of current?
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Technician A says that the starter control circuit includes the ignition switch, neutral safety (clutch) switch, and solenoid. Technician B says that the power circuit includes the battery, battery cables, solenoid, and starter motor. Who is right?
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Which safety device is used on vehicles with manual transmissions?
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Most remote start systems will shut off the engine after ________ minutes unless reset by the remote fob.
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How many brushes are typically used in the automotive starter?
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Which brushes are not insulated?
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The overrunning clutch accomplishes which of the following?
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On a vehicle with computer controlled starting, some key operated systems, and most push-button-to-start systems use the PCM to crank the engine. The ignition switch start position or the push-to-start button is used as _________ signal to the PCM.
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Study Notes
Starter Motors and Operation
- Starter motors work by rotating the armature from a strong magnetic field to a weaker magnetic field.
- Normal cranking speed for an engine is approximately 200 RPM.
- Starter motors can generate up to 8 horsepower.
Troubleshooting and Technician Insights
- A defective starter drive can cause a whining noise, confirming Technician B's correctness.
- Both Technician A and Technician B are accurate regarding the control and power circuits involved in the starter system.
Components and Circuitry
- The neutral safety switch is positioned between the ignition switch and the starter solenoid.
- The starter solenoid acts as a relay, using a small current to control a larger current.
- The starter control circuit encompasses the ignition switch, neutral safety switch (or clutch switch), and solenoid.
Key Electrical Elements
- Brushes in starter motors transfer electrical power between field coils and the armature; typically, four brushes are employed, with ground brushes being uninsulated.
Safety Mechanisms
- The clutch safety switch is a critical safety device for manual transmission vehicles.
- Remote start systems generally shut off the engine after 10 minutes unless reset with the remote fob.
Mechanical Features
- The overrunning clutch protects the starter motor by preventing excessive spinning.
- The ignition switch's start position or push-to-start button serves as an input signal to the PCM (Powertrain Control Module) in vehicles with computer-controlled starting systems.
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Description
This quiz covers the essentials of starter motors, their operation, and troubleshooting techniques. It delves into the circuitry involved and key electrical components associated with starter systems. Understanding these concepts is crucial for anyone working in automotive technology.
