Starter Motor Cranking

STARTER MOTOR CRANKING
As soon as the engine starts to rotate and the control module receives signals from the crankshaft position sensor, the fuel pump relay operates so that all valves open simultaneously and remain open for a length of time which is dependent on temperature. This takes place only once, i.e. during the first injection, and it is done to achieve shorter starting times. After this initial injection of fuel the system changes to sequential injection.