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Home >> Chevrolet >> 2002 >> Blazer 4D Utility, 4WD, Part Time >> Repair and Diagnosis >> External Pages >> Different car >> Section 421 (Engine Control System Self-Diagnostics - 3.8L) >> Diagnostic Tests >> DTC P0650: Malfunction Indicator Light Control Circuit >> Test Description

Test Description

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The number below refers to the step number in the diagnostic procedures.

  1. 5

    This step tests for a short to ground in the MIL control circuit. With the Powertrain Control Module (PCM) disconnected and the ignition ON, the MIL should be OFF.

  2. 6

    This step tests for a short to voltage on the MIL control circuit. With the fuse removed, there should be no voltage on the MIL control circuit.
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