Fuel Injector Circuit Diagnosis

Fuel Injector Circuit Diagnosis

Circuit 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 Diagnosis (w/CH47976) Fuel Injector Diagnosis (w/J39021 or w/Tech 2). Fuel Injector Diagnosis (w/CH47976) Fuel Injector Diagnosis (w/J39021 or w/Tech 2)
* For an intermittent condition, Refer to Intermittent Conditions. Intermittent Conditions

Test

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