9-5 Sedan (9600) L4-2.3L Turbo (B235) (2000)
Tachometer: Description and Operation
Tachometer
The main instrument unit is fitted with and electronic tachometer. Trionic sends continuous information on the engine speed to the bus.
The tachometer is supplied with current and controlled from the main instrument unit control module. When engine speed is below 1100 rpm (around
idling speed) the display is "damped' to give a more stable reading.
Diagnostics
The function has its own diagnostics in the sending system.