TCM backup functions

If one or more components or sensors malfunction, the TCM -J217- activates corresponding substitute functions or backup programs. This ensures that the automatic transmission operates without damage or effect to the operation or quality of the shifting.

If certain malfunctions occur and the TCM is active, the transmission range engaged at that moment is maintained. As soon as the driving situation permits, the TCM activates the "mechanical backup with active control module" mode while ensuring transmission security.