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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 P0560 >> Circuit/System Testing

Circuit/System Testing

  1. Measure the voltage at the battery terminals and compare it with the scan tool PCM Ignition 1 signal parameter. Verify that battery and Ignition 1 signal readings do not differ more than 2.0 volts
    • If greater than the specified value, test the Ignition 1 circuit X1 terminal 19 and ground circuit X2 terminal 73 of the PCM for an open/high resistance. If the circuits test normal replace the PCM.
  2. Go to Charging System Test .
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