Circuit Description

PCM enables an injector on intake stroke of each cylinder Ignition voltage is supplied directly to fuel injectors. PCM controls each injector by grounding control circuit via an internal switch called a driver. The driver supplies ground for component being controlled and is equipped with a fault line which is monitored by the PCM. If PCM detects that injector control circuit voltage is other than what is expected, PCM will set. Conditions for setting DTC:

• Engine speed greater than 400 RPM.
• System voltage is greater than 6 volts, but less than 18 volts.
• PCM detects wrong voltage potential on any injector driver circuit for 5 seconds.