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Home >> GMC >> 2003 >> Safari Van Cargo, AWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 367 (Engine Controls Self-Diagnostics - 3.1L Engine) >> Diagnostic Tests >> DTC P1650: Pcm Output "B" Circuit >> Circuit Description

Circuit Description

WARNING: This page is about a different car, the 2003 Pontiac Grand Prix, 2003 Chevrolet Malibu, and 2003 Buick Century. However, it is still accessible from the selected car via links, so may be relevant.

The Output Driver Modules (ODM) are chips that are inside the Powertrain Control Module (PCM). The ODMs provide grounded outputs that control devices. Each output has an internal feedback circuit that connects to the PCM microprocessor. The ODM 2 determines if the voltage or the current may cause damage to the PCM. The PCM monitors voltage through the battery input. Any incorrect current on a circuit to the ODM will cause the ODM to report this DTC.