DTC P0200: Injector Control Circuit: Description

The injector system on both the DOHC and SOHC engines utilize Sequential Fuel Injection (SFI). The PCM independently controls each fuel injector through a driver circuit, in accordance with intake valve opening. The driver circuit is internally located in the PCM, providing the ground for each injector. The length and time an injector is held open (grounded by PCM) is calculated based on engine speed, load and valve location from the crankshaft position sensor. DTC is used when PCM cannot distinguish which injector circuit has failed or type of fault that occurred (open, short to ground or short to voltage) with circuit because length of time condition existed was to short.