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Home >> Chevrolet >> 2002 >> Blazer 4D Utility, 4WD, Part Time >> Repair and Diagnosis >> External Pages >> Different car >> Section 84 (Engine Control System Self-Diagnostics - 3.1L Engine) >> Diagnostic Tests >> DTC P0601-P0607, P1600, P1621, P1627, P1680, P1681 Or P1683: Control Module Read Only Memory >> Circuit Description

Circuit Description

WARNING: This page is about a different car, the 2002 Pontiac Grand Prix, 2002 Chevrolet Malibu, and 2002 Buick Century. However, it is still accessible from the selected car via links, so may be relevant.

This diagnostic test applies to internal microprocessor integrity conditions within the control module. This diagnostic test also addresses if the control module is not programmed.

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