Transmission Control (O/D OFF) Switch Test
WARNING: This page is about a different car, the 2002 Mazda B4000, 2002 Mazda B3000, and 2002 Mazda B2300. However, it is still accessible from the selected car via links, so may be relevant.
This tests the ability of the PCM to identify a state of change in the O/D OFF switch. The switch must briefly be cycled on all vehicles with an O/D OFF switch. This test is performed during the KOER self-test.