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Home >> Saturn >> 2006 >> Relay 3.9 1, FWD >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 6 (Engine Controls - 3.5L - DTC P0496 To DTC U0107) >> DTC P1640, P1650, or P1660 >> Circuit/System Description

Circuit/System Description

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The output driver module (ODM) is a control chip inside of the powertrain control module (PCM). The PCM contains multiple ODMs. ODMs provide grounded output control of devices. Each ODM output has an internal feedback circuit that connects to the PCM microprocessor. The PCM monitors voltage through the ignition 1 voltage circuit. Excessive voltage or current may cause damage to the PCM.