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Home >> Pontiac >> 2008 >> Grand Prix Base >> Repair and Diagnosis >> Electrical >> Charging Systems >> Battery, Charging System And Starting System >> Diagnostic Information and Procedures >> DTC P0562 >> Circuit/System Testing

Circuit/System Testing

  1. Verify P0562 DTC is set as current.
  2. Engine running, measure the voltage at the battery terminals and compare it with the Ignition 1 Signal parameter. The battery and Ignition 1 signal readings do not differ more than 2 volts.
    • If greater than the specified value, test the Ignition 1 circuit X1 terminal 19 and ground circuit X2 terminal 73 for an open/high resistance.
  3. If the circuits test normal, replace the ECM.
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