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Home >> Chevrolet >> 2006 >> Impala Police, 3.5 K >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System - 3.5L - DTC P0010 To DTC P0420 >> DTC P0230 >> Circuit/System Verification

Circuit/System Verification

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