- Engine load; signal from MAF sensor (mass air flow).
- Accelerator pedal position and related request; APP sensor signal (accelerator pedal position).
- Engine temperature; signal from the coolant temperature sensor.
- Engine speed; signal from CKP sensor (crankshaft position).
- Movement speed; signal from the engine control unit based on the signals from the ABS module (anti-lock braking system) via high-speed CAN bus (data transfer protocol).
Using these signals, the engine control unit applies a special algorithm to monitor torque and power requests from the driver in the current gear to determine if that torque and power can be achieved in the next gear in order to reduce fuel consumption without undue stress on the engine.
The signal from the steering angle sensor is used to prevent the shift indicator from turning on when the vehicle is moving in a corner.
Linear Clutch Sensor:
A linear clutch sensor is part of the system "Stop/Start" and is used to reset the indicator each time the gear is changed. For more information, see the chapter: Starting system (303-06C Starting system - 2.2L Duratorq - Td4, Vehicles built from 03/2009, Description and function).
The two clutch position sensors present, located on the clutch pedal housing and providing signals to various vehicle systems, are also used by the shift indicator to check for signal plausibility.
NOTE: The shift indicator does not work if the system has "Stop/Start" a malfunction has occurred.
For more information, see the chapter: Starting system (303-06C Starting system - 2.2L Duratorq - Td4, Vehicles built from 03/2009, Description and function).
Comments on this article