Question

The oil pressure light on a vehlole dashboard stays on whenever the engine is running. The oil pressure has been checked with a mechanical gauge and it is within specifications. Technician A says that the circuit between the indicator light and the pressure switch could be grounded. Technician B says that an open in the pressure switch Itself could be the cause. Who Is right?

A. Technician A only
B. Technician B only
C. Both A and B
D. Neither A or B

Answer 1

Both Technician A, who suspects a grounded circuit, and Technician B, suspecting an open in the pressure switch, are correct. Either issue could result in the oil pressure light remaining lit on the dashboard.

Step-by-step explanation:

The question is about diagnosing why the oil pressure light on a vehicle's dashboard remains illuminated while the engine is running, despite the actual oil pressure being within specifications according to a mechanical gauge.

Technician A suggests that the issue could be due to the circuit between the indicator light and the pressure switch being grounded. This scenario would cause the short circuit and lead the light to stay on incorrectly. On the other hand, Technician B believes that an open circuit within the pressure switch itself might be the cause, which would also result in the light staying on as the switch would fail to close and turn the light off even when the oil pressure is normal.

Therefore, the correct answer is C. Both Technician A and B are right as either a grounded circuit or an open in the pressure switch could be responsible for the oil pressure light remaining on.