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Home >> GMC >> 2003 >> Jimmy 2D Utility, Part Time, Standard >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - Self-Diagnostics - 4.3L >> Diagnostic Tests >> DTC P0650: Mil Control Circuit >> Test Description

Test Description

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

  1. 5 -  This step tests for a short to ground in the MIL control circuit. With the 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.