Transmission Control Switch Test
WARNING: This page does not describe the selected car, but rather 30 other vehicles, including the 2004 Mercury Sable, 2004 Mercury Mountaineer, 2004 Mercury Monterey, 2004 Mercury Marauder, and 2004 Mercury Grand Marquis. However, it is still accessible from the selected car via links, so may be relevant.
This tests the ability of the Electronic EC system to detect a change of state in the transmission control switch (TCS). Switch MUST briefly be cycled on all vehicles equipped with TCS input. This is done during KOER On-Demand Self-Test.