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Home >> Chevrolet >> 2002 >> Blazer 4D Utility, 4WD, Part Time >> Repair and Diagnosis >> External Pages >> Different car >> Section 335 (Engine Controls - Self-Diagnostics - 3.0L) >> Diagnostic Tests >> DTC P0201-206: Injector Control Circuit >> Test Description

Test Description

WARNING: This page is about a different car, the 2003 Saturn Vue. However, it is still accessible from the selected car via links, so may be relevant.

The numbers below refers to the step numbers on the diagnostic procedures.

  1. 2 -  This step verifies that the condition is present.
  2. 4 -  This step verifies that the ECM is able to control the fuel injector. If the test light flashes, the ECM and the wiring are okay.
  3. 5 -  This step isolates the circuit between the multi-way connector and the ECM. An open on the fuel injector control circuit will not allow the test light to flash.
  4. 7 -  This step inspects for fuel injector harness damage between the multi-way connector and the intake plenum. Careful inspection may isolate the condition before removal of the intake plenum.
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