Diagnosis and Troubleshooting of Automotive Electrical, Electronic, and Computer Systems 6th Edition by James Halderman

تمرين 6

When checking the operation of a rear window defogger with a voltmeter, _______.
A) The voltmeter should be set to read AC volts
B) The voltmeter should read close to battery voltage anywhere along the grid
C) 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
D) The voltmeter should indicate decreasing voltage when the grid is tested across the width of the glass