Technician A says electronically controlled systems may use sensor inputs to control the center differential for front-rear torque bias. Technician B says the Porsche PTM system uses an electronically controlled motor in the transfer case. Who is correct?
The composite vehicle is running poorly. The technician has recorded the following data: Engine Idle Speed700 RPMMass Air Flow sensor0.7 voltsMAP sensor2.1 volts Technician A says a faulty MAP sensor is the cause. Technician B says the Mass Air Flow sensor is defective. Who is right?
While discussing the numbering of HO2S sensors, Technician A says they are identified by their position in relation to the number 1 cylinder and their location relative to the converters. Technician B says HO2S sensors on the same side of the vehicle as the number 1 cylinder have a 1 prefix, and sensors mounted downstream from the converter have a 1 suffix. Who is correct?
A vehicle vibrates at highway speed. Technician A says that water in the tire(s) could be the cause. Technician B says that an out-of-round tire could be the cause. Which technician is correct?
Technician A says grounding out a plug wire to a cylinder with a cracked piston will can increase the noise. Technician B says a rod knock will become quieter as its cylinder is grounded. Who is correct?
A P0117 DTC is being discussed. Technician A says that the ECT sensor could be internally shorted to ground. Technician B says that the signal wire could be open. Which technician is correct?
Two technicians are discussing why the brake lines are coiled near the master cylinder on many vehicles. Technician A says that these coils help prevent moisture from flowing from the master cylinder to the calipers. Technician B says that they help prevent cracks that could be caused by vibrations. Which technician is correct?