Circuit Description

Output driver modules (ODMs) are used by PCM in order to turn on many of the current-driven devices that are needed to control various engine and transmission functions. Each ODM is capable of controlling up to 7 separate outputs by applying ground to the device which PCM is commanding on. ODMs have the capability of diagnosing each output circuit individually.

DTC will set when an improper voltage level has been detected on the output circuit which controls the cooling fan relay No. 1 with ignition is on and for at least 30 seconds.