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Home >> Chevrolet >> 2002 >> Blazer 4D Utility, 4WD, Part Time >> Repair and Diagnosis >> External Pages >> Different car >> Section 1912 (Battery, Charging System And Starting System) >> Diagnostic Information and Procedures >> DTC P0622 >> Circuit/System Verification

Circuit/System Verification

WARNING: This page is about a different car, the 2009 Saturn Vue. However, it is still accessible from the selected car via links, so may be relevant.
  1. Ignition ON, engine OFF, observe the scan tool ECM GEN-F Terminal Signal parameter. The reading should be less than 5%.
  2. Engine running, observe the scan tool ECM GEN-F Terminal Signal parameter. The reading should be greater than 5%.
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