A voltage drop test is being performed. With the red lead placed on the ground terminal at the PCM and the black lead placed on the negative post of the battery, the meter reads 0.165 volt with the ignition key turned on, but the engine not running. Based on this reading, what is indicated?
A) The reference voltage to the sensors is low.
B) The computer is faulty.
C) The computer's ground circuit has excessive resistance.
D) This is a normal condition; it does not require any service.

Question

Quizplus · Accepted Answer

The voltage drop of 0.165 volt indicates excessive resistance in the computer's ground circuit. A good ground circuit should have a very low voltage drop, close to zero, indicating minimal resistance.

A Voltage Drop Test Is Being Performed