Which sensor provides input to the Automated Manual Transmission (AMT) electronic control unit for deciding gear shifts?
Vehicle speed sensor
An Automated Manual Transmission relies on an electronic control unit that must know the vehicle's operating condition before it commands a gear change.
The most important input for that decision is how fast the vehicle is travelling, which tells the control unit whether to shift up or down.
The vehicle speed sensor supplies this road-speed signal, and the control unit combines it with throttle position to select the correct gear and time the shift.
The clutch position sensor only reports how far the clutch is engaged during a shift, so it monitors execution rather than deciding which gear to choose.
The oxygen sensor measures exhaust gas oxygen for the fuel-air mixture control and has nothing to do with gear selection.
A fuel injector is an actuator that delivers fuel, not a sensor, so it provides no input signal for shift decisions.
Hence, the answer is Vehicle speed sensor.
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