Safety functions of the Transmission Control Module (TCM)
If critical malfunctions occur while driving, the transmission will continue to operate in an emergency running mode. If a malfunction occurs while the selector lever is in position "D," "3" or "2," the 3rd gear emergency running mode is activated.
If a malfunction occurs while the selector lever is in position "1," "P," "N" or "R" the emergency running mode for that stage is activated.
If the engine is started again in the emergency running mode and the malfunction occurs when the selector lever is in position "D", "3" or "2" then 3rd gear is activated hydraulically, until the malfunction is repaired.
If there are malfunctions that result in emergency running, the transmission remains in the emergency running mode until the ignition is switched off.
If there are malfunctions that result in emergency running, the transmission remains in the emergency running mode until the ignition is switched OFF.