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Home >> GMC >> 2006 >> Sierra 1500 HD, RWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 1645 (Engine Control System & Fuel System - 4.8L, 5.3L, 6.0L, 6.2L - DTC P0300 To DTC P1175) >> DTC P0650 >> Circuit/System Verification

Circuit/System Verification

WARNING: This page is about a different car, the 2010 GMC Sierra, 2010 GMC Cab & Chassis Sierra, 2010 Chevrolet Silverado, and 2010 Chevrolet Cab & Chassis Silverado. However, it is still accessible from the selected car via links, so may be relevant.
  1. Ignition ON, command the MIL ON and OFF with a scan tool. The MIL should turn ON and OFF as commanded.
  2. Engine idling, command the MIL ON and OFF with a scan tool while observing the following control circuit status parameters:
    • MIL Ckt Short Gnd Test Status
    • MIL Ckt Open Test Status
    • MIL Ckt Short Volts Test Status

      Each parameter should display OK or Not Run.

  3. Operate the vehicle within the Conditions for Running the DTC. You may also operate the vehicle within the conditions that you observed from the Freeze Frame/Failure Records data.
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