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Home >> Chevrolet >> 2002 >> Blazer 4D Utility, 4WD, Part Time >> Repair and Diagnosis >> External Pages >> Different car >> Section 1442 (Engine Control System - Diagnosis - 4.2L (DTC P0507 To DTC P2176)) >> Diagnosis Information & Procedures >> DTC P1682 >> Circuit Description

Circuit Description

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The throttle actuator control (TAC) system uses an ignition voltage supply separate from the powertrain control module (PCM) supply. If the PCM detects a voltage difference between the two circuits, this diagnostic trouble code (DTC) will set.

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