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Home >> Chevrolet >> 1998 >> Camaro Base, 2D Convertible, Standard >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System - Tests W/Codes - 3.8L >> Diagnostic Trouble Codes >> DTC P1653 - Fuel Level Output Control Circuit >> Circuit Description
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Circuit Description

Output Driver Modules (ODM) are used by PCM to turn on current-driven devices needed to control various engine and transaxle functions. Each ODM can control up to 7 outputs, including fuel level gauge circuit, by supplying ground to device PCM is commanding on. ODMs can diagnose each circuit individually. If ODM detects an improper voltage level, DTC is set.

Conditions for setting DTC: