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Home >> Cadillac >> 2012 >> Escalade EXT >> Repair and Diagnosis >> External Pages >> Different car >> Section 1220 (Hybrid Engine Control System) >> Diagnostic Information and Procedures >> DTC P0563 >> Circuit/System Testing
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Circuit/System Testing

WARNING: This page is about a different car, the 2008 GMC Yukon and 2008 Chevrolet Tahoe. However, it is still accessible from the selected car via links, so may be relevant.
  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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