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Technician A is performing a full circuit check of the starter motor using the voltage drop testing method. His voltmeter’s negative lead is secured to the battery’s negative terminal. His positive meter lead is in contact with the starter case. When the key is placed in the “start” position by a helper, the meter is reading 11.98 volts. What is the MOST LIKELY fault in this circuit?

There is an open circuit in the positive starter cable.

There is excessive resistance in the ground side of the circuit.

The starter motor is not "on" and the test reading is invalid.
The reading is normal. There is no problem with the circuit.