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Home >> Hummer >> 2009 >> H2 4D Utility Pickup >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls And Fuel - 6.2L - DTC P0010 To DTC P0232 >> DTC P0230 >> Circuit/System Verification

Circuit/System Verification

With the ignition ON, engine OFF, command the fuel pump ON and OFF several times using the scan tool output control function. You should either hear or feel the fuel pump with each command.