Fuel Cutoff Control

During deceleration with the throttle valve closed, current to the injectors is cut off to improve fuel economy at engine speeds over 1,000 rpm (min^-1 ). Fuel cutoff control also occurs when the engine speed exceeds 6,900 rpm (min^-1 ) (K20Z3: 8,200 rpm (min^-1 )), regardless of the position of the throttle valve, to protect the engine from over-revving. When the vehicle is stopped, the ECM/PCM cuts the fuel at engine speeds over 5,000 rpm (min^-1 ) (K20Z3:7,700 rpm (min^-1 )). Engine speed of fuel cut is lower on a cold engine.