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Home >> Pontiac >> 2005 >> Grand Prix GXP >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - 5.3L - DTC P1682 To P3449) >> DTC P1682: Ignition 1 Switch Circuit 2 >> Circuit/System Verification

Circuit/System Verification

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.

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