Question

1. view the electrical diagram above. the engine’s cooling fan motor operates whenever the ignition is switched on, even when the engine is cold. which of the following would cause this continuous fan motor operation?

a. excessive resistance at point a of the system.

b. an open at point b in the system.

c. a short to ground at point c in the system.

d. an open at point d of the system.

Explanation:

To determine the cause of continuous fan motor operation, we analyze each option:

• Option A: Excessive resistance at point A would likely impede current flow, not cause continuous operation.
• Option B: An open at point B would break the circuit, stopping the fan, not causing continuous operation.
• Option C: A short to ground at point C would bypass any normal control (like a temperature - based switch), allowing current to flow to the fan motor whenever the ignition is on, which matches the continuous operation described.
• Option D: An open at point D would break the circuit, stopping the fan.

Answer:

C. A short to ground at point C in the system.