Technician A says that engine vacuum is used to operate some emissions control devices. Technician B says that an EGR valve may be operated by engine vacuum. Who is correct?
A. A only
B. B only
C. Both A and B
D. Neither A nor B
Answer: C
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When a EST fails to validate a handshake with a module what is the first step the technician should perform?
A. Check the functionality of the EST and the connection cables. B. Reboot the PCM and attempt the handshake again. C. Start a databus diagnostic routine. D. Remove the module and diagnose.
?What is the name of the shiny area where the rings rub against the cylinder wall?
What will be an ideal response?
If f(ø) = cosø + jsinø, show that f(ø) = e^jø.
What will be an ideal response?
Two technicians are discussing non-indicator type ball joint inspection. Technician A says that the vehicle should be on the ground with the ball joints loaded, then checked for free play. Technician B says the ball joints should be unloaded before checking for free play. Which technician is correct?
A) Technician A only B) Technician B only C) Both technicians D) Neither technician