CTS V6-3.2L VIN N (2003)
Fuel Injector: Testing and Inspection
Fuel Injector Coil Test
CIRCUIT DESCRIPTION
The control module enables the appropriate fuel injector on the intake stroke for each cylinder. Ignition voltage is supplied directly to the fuel
injectors. The control module controls each fuel injector by grounding the control circuit via a solid state device called a driver. A fuel injector coil
winding resistance that is too high, or low, will affect engine driveability. A fuel injector control circuit DTC may not set, but a misfire may be
apparent. The fuel injector coil windings are affected by temperature. The resistance of the fuel injector coil windings will increase as the temperature
of the fuel injector increases.
DIAGNOSTIC AIDS
Diagnostic Aids Part 1
