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Home >> Pontiac >> 2007 >> G5 Base, Automatic >> Repair and Diagnosis >> Electrical >> Charging Systems >> Battery, Charging System And Starting System >> Diagnostic Information and Procedures >> DTC P0563 >> Circuit/System Verification
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Circuit/System Verification

  1. If the DTC is history, refer to Charging System Test .
  2. Start the engine, record the voltage at the battery terminals. Observe the Ignition 1 Signal parameter in the ECM/PCM data list. Voltages should not differ by more than 1 volt.
    • If more than 1 volt, replace the ECM/PCM.
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