Technician A says that ACRS pressure during injection should be roughly equivalent to the rail pressure in all modes of operation. Technician B says that HADI injection pressure is managed by the motor control module (MCM). 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

Technician B is correct because HADI (High-pressure Accumulator Direct Injection) injection pressure is indeed managed by the Motor Control Module (MCM), which adjusts the pressure based on various engine operating conditions. Technician A's statement about ACRS (Amplified Common Rail System) pressure being equivalent to the rail pressure in all modes of operation is not accurate, as ACRS pressure can vary depending on the demand and operating conditions.

Technician a Says That ACRS Pressure During Injection Should Be