Transmission Control Switch Circuit [09/2020 - ]: Description
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The transmission control switch detects when the shift lever is moved to M.
Using the transmission control switch, when the shift lever is in M, it is possible to select between 1st and 8th gears (M1 to M8).
Moving the shift lever to "+" once selects the next higher gear, and moving the shift lever to "-" once selects the next lower gear.