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Home >> Chevrolet >> 2009 >> TrailBlazer 4.2 S, RWD >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System & Fuel System - 4.2L - DTC P0366 T0 DTC P2544 >> DTC P1682 >> Conditions for Setting the DTC

Conditions for Setting the DTC

The ignition 1 voltage of the ignition main relay is more than 3 volts different than the ignition 1 voltage of the powertrain relay for more than 2 seconds.