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Home >> GMC >> 2008 >> Yukon Base, 4.8 C >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 4 (Hybrid Engine Control System) >> Diagnostic Information and Procedures >> DTC P0563 >> Circuit/System Testing

Circuit/System Testing

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  1. Engine ON, the scan tool Control Module Voltage parameter should display less than 14.5 volts.
    • If the voltage is not less than the specified value, test the Ignition Voltage circuit for a short to a voltage source greater than the specified value.
    • If the voltage is within the specified range, replace the PIM.
  2. Inspect for an external condition that may have caused a high -12 V circuit condition such as a battery charger.
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