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Home >> Chevrolet >> 2002 >> Blazer 4D Utility, 4WD, Part Time >> Repair and Diagnosis >> External Pages >> Different car >> Section 413 (Engine Controls - Self Diagnostics - 8.1L) >> Diagnostic Tests >> DTC P0200: Fuel Injector Control Circuit >> Test Description

Test Description

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The numbers below refer to the step numbers in the diagnostic procedure.

  1. 4

    This step tests for voltage at the fuel injector harness connector. The INJ fuse supplies power to the coil side of the fuel injector harness connector. If the B+ supply circuit is indicated.

  2. 5

    This step verifies that the PCM is able to control the fuel injector. If the lamp blinks, then the PCM and wiring are OK.

  3. 6

    This step tests if a ground is constantly being applied to the fuel injector.

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