Transmission control module

A vehicle comprising:

• a plurality of sensors each configured to output a signal at least partially representative of a speed of at least one of a first transmission input shaft, a second transmission input shaft, a transmission output shaft, and an engine;
• and
• a transmission control module in communication with the plurality of sensors and configured to identify at least one of the plurality of sensors as a failed sensor and another of the plurality of sensors as a working sensor, wherein the transmission control module is configured to estimate the signal of the failed sensor based on a predetermined relationship between an expected signal from the failed sensor and the signal received from the working sensor and substitute the signal from the failed sensor with the expected signal,
• wherein the transmission control module is configured to independently process signals from the plurality of sensors along a primary processing path and a secondary processing path, wherein the transmission control module is configured to determine whether the primary processing path has failed by comparing at least one of the signals processed along the primary processing path to at least one of the signals processed along the secondary processing path.

A method comprising:

• measuring a speed of at least one of a first transmission input shaft, a second transmission input shaft, a transmission output shaft, and an engine with at least one of a plurality of sensors;
• generating a signal representative of each of the speeds measured;
• receiving each of the signals at a transmission control module;
• identifying, at the transmission control module, at least one of the plurality of sensors as a failed sensor and at least one of the plurality of sensors as a working sensor;
• estimating, at the transmission control module, the signal of the failed sensor based on a predetermined relationship between an expected signal from the failed sensor and the signal received from the working sensor;
• and
• substituting the signal from the failed sensor with the expected signal.