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Home >> Mercury >> 2008 >> Milan Base, 2.3 Z, Automatic >> Repair and Diagnosis >> External Pages >> Different car >> Section 1409 (Automatic Transmission - AISIN Aw21) >> Diagnostic Tests >> Diagnostics >> Self Diagnosis Function >> Notes

Self Diagnosis Function: Notes

WARNING: This page is about a different car, the 2009 Mercury Milan, 2009 Lincoln MKZ, and 2009 Ford Fusion. However, it is still accessible from the selected car via links, so may be relevant.

The Transmission Control Module (TCM) monitors the communication status of each sensor, electronic component and the PCM. If any malfunction should occur, the TCM function warns the driver and stores the malfunction as a diagnosis code.