Technician A says that desired rail pressure in a DD-Series ACRS fuel system is calculated by the MCM. Technician B says that actual rail pressure in a DD-Series ACRS fuel system is signaled to the MCM by the rail pressure sensor. Who is correct?
A) Technician A only
B) Technician B only
C) Both A and B
D) Neither A nor B

Question

Quizplus · Accepted Answer

Both statements are correct. The desired rail pressure in a DD-Series ACRS (Amplified Common Rail System) fuel system is indeed calculated by the MCM (Motor Control Module), and the actual rail pressure is monitored and signaled to the MCM by the rail pressure sensor. This allows the system to adjust the fuel injection for optimal performance.

Technician a Says That Desired Rail Pressure in a DD-Series