Fuel Injector Circuit Diagnosis
FUEL INJECTOR CIRCUIT DIAGNOSISCIRCUIT DESCRIPTION
The control module enables the appropriate fuel injector pulse for each cylinder. Ignition voltage is supplied to the fuel injectors The control module controls each fuel injector by grounding the control circuit via a solid state device called a driver.
DIAGNOSTIC AIDS
- Monitoring the fuel injector circuit status with a scan tool, while moving the fuel injector harness, may help isolate an intermittent condition.
- Performing the Fuel Injector Coil Test may help isolate an intermittent condition. Refer to Fuel Injector Coil Test. Component Tests and General Diagnostics
- For an intermittent condition, refer to Intermittent Conditions. Diagnostic Strategies
TEST
Steps 1-8:
Steps 9-14:
