Exam 18: Starting and Motor Systems

A vehicle is being diagnosed for a "no crank" problem. When the ignition switch is turned to the start position, a clicking [buzzing] noise is heard at the starter but the engine does not crank over. Technician A says the problem could be a weak battery. Technician B says the problem could be an open in the hold-in winding. Who is correct?

The starter safety switch on a vehicle with an automatic transmission is typically located on the transmission housing.

The two main components of the armature are the armature windings and the _____.

Why must parts cleaning solvent be avoided when cleaning the starter motor?

An engine cranks slowly. Technician A says a possible cause of the problem is low resistance in the starter circuit connections. Technician B says a possible cause is an open in the starter field coil circuit. Who is correct?

Cranking problems can be created if oversize battery cables are installed.

Permanent magnet starting motors use strong magnets surrounded by field coils to produce extra turning torque.

While discussing armature testing, Technician A says to test for shorts, place the armature in a growler and hold a thin metal blade parallel to the armature. Technician B says an ohmmeter can be used to test for shorts. Who is correct?

The part of the armature that the brushes ride on is called the ____________________.

Technician A says a starter no-load test is conducted with the starter in a bench vise. Technician B says the battery must have a minimum voltage of 9.6 volts during the test. Who is correct?

The starting system has two separate electrical circuits: the starter circuit and the ____________________ circuit.

Describe how to perform a cranking voltage test.

The field coils in the starter motor are connected in ______.

On a vehicle equipped with a starter relay, there are two positive battery cables. One connects the battery positive battery terminal to the relay. The second cable connects the battery to the ____________________ terminal.

A vehicle that has a low cranking RPM is being diagnosed. After checking the battery a cranking voltage test measures 9.1 volts at the starter solenoid terminal. What should be done next?

If a ground circuit test reveals a voltage drop of more than 0.2 volt, the problem may be a ______.

Technician A says the starter circuit carries high current from the battery to the starter motor. Technician B says the control circuit is a low current circuit that sends current from the ignition switch to the starter relay or solenoid. Who is correct?

The starter motor converts electric current into torque or twisting force through the interaction of magnetic fields.

The starter drive ____________________ gear teeth mesh with the flywheel ring gear teeth.

The device that prevents the engine from turning the armature of the starter motor is the ______.