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Home >> Chevrolet >> 2006 >> Impala LTZ >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 12 (Engine Control System - 5.3L - DTC P1682 To DTC P3401) >> DTC P1682 >> Circuit/System Verification

Circuit/System Verification

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With the key ON, engine OFF, monitor the ignition 1 signal parameter with a scan tool. The ignition 1 signal parameter should display battery voltage.