PM motors used in power windows, mirrors, and seats can be reversed by ________.
A) Reversing the polarity of the current to the motor
B) Sending current to a reversed field coil
C) Using a relay and a two-way clutch
D) Using a reverse relay circuit
Question 2
When checking the operation of a rear-window defogger with a voltmeter ________.
A) The voltmeter should be set to read AC volts
B) Voltage should be available anytime at the power side of the grid because the control circuit just completes the ground side of the heater grid circuit
C) The voltmeter should read close to battery voltage anywhere along the grid
D) The voltmeter should indicate decreasing voltage when grid is tested across width of glass
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To reverse the direction of operation, the polarity of the current through the motor is reversed.
This is what was found when removing an air filter from a vehicle that had a lack-of-power concern. ...
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