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Home >> Chevrolet >> 2002 >> Blazer 4D Utility, 4WD, Part Time >> Repair and Diagnosis >> External Pages >> Different car >> Section 103 (Engine Controls Self-Diagnostics - 2.2L) >> Diagnostic Tests >> DTC P0201-P0204: Injector Control Circuit >> Test Description

Test Description

WARNING: This page is about a different car, the 2002 Pontiac Sunfire, 2002 Pontiac Grand Am, 2002 Oldsmobile Alero, and 2002 Chevrolet Cavalier. However, it is still accessible from the selected car via links, so may be relevant.

The number below refer to the step number on the diagnostic procedure.

  1. 4

    This step tests for voltage at the fuel injector harness connector. The F/P-INJR fuse supplies power to the coil side of the fuel injector harness connector. If the fuse is open, a short to ground on the ignition 1 voltage supply circuit of the fuel injector is indicated.

  2. 5

    This step verifies that the PCM is able to control the fuel injector. If the test light flashes, the PCM and the wiring are okay.

  3. 6

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

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