What level of tach reference information is required in order for the PCM to properly control an SFI fuel management system?
A) Level one information indicating that "a pair of cylinders`pistons is approaching TDC"
B) Level two information indicating "which pair of cylinders`pistons is approaching TDC"
C) Level three information indicating "which cylinder of the piston pair approaching TDC is on the compression stroke"
D) None of this information is required in order for the PCM to control a SFI fuel management system.

Question

Quizplus · Accepted Answer

Level three information is required for the PCM to properly control an SFI (Sequential Fuel Injection) system, as it needs to know which specific cylinder is on the compression stroke to time the fuel injection accurately.

What Level of Tach Reference Information Is Required in Order