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Home >> Cadillac >> 2012 >> Escalade EXT >> Repair and Diagnosis >> External Pages >> Different car >> Section 875 (Battery, Charging System And Starting System) >> Diagnostic Information and Procedures >> DTC P0562 >> Circuit/System Testing
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Circuit/System Testing

WARNING: This page is about a different car, the 2007 GMC Sierra and 2007 Chevrolet Silverado. However, it is still accessible from the selected car via links, so may be relevant.
  1. Measure the voltage at the battery terminals and compare it with the Ignition 1 Signal parameter in the ECM data list. Verify that battery and Ignition 1 signal readings do not differ more than 1 volt.
    • If greater than 1 volt test the Ignition 1, ground circuits of the ECM for open/high resistance or replace the ECM.
  2. Go to Charging System Test .
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