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Home >> Chevrolet >> 2000 >> Lumina >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls Self-Diagnostics - 3.1L >> Diagnostic Tests >> DTC P1663: Change Oil Light Control Circuit >> Circuit Description

Circuit Description

Output Driver Modules (ODMs) are used by Powertrain Control Module (PCM) to turn on current-driven devices that are needed to control various engine and transaxle functions. Each ODM can control up to 7 separate outputs by grounding the device that PCM is commanding on. ODMs can diagnose each output circuit individually.