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Home >> Saab >> 2001 >> 9-3 Base, 4D Hatchback, Automatic >> Repair and Diagnosis >> Accessories & Equipment >> Gauges & Instrument Panels >> Main Instrument Panel, Petrol >> Technical description >> Turbo gauge, Trionic T7

Turbo gauge, Trionic T7

The main instrument unit has an electronic turbo gauge.

This gauge is supplied with current and controlled by the main instrument unit's control module.

The value shown by the turbo gauge needle is based on the following information: Trionic T7 calculates the air mass in mg/combustion and converts it to a value between 0 and 255. Trionic sends this information to the bus as a bus message "Turbo gauge", the value of which corresponds quite well with the engine torque.

The main instrument unit uses this value for the turbo needle, which is used to inform the driver of the load under which the engine is working.

Fig 1: Identifying Communication Diagram - Turbo Gauge
G03502682Courtesy of SAAB-SCANIA OF AMERICA, INC.
Fig 2: Identifying Communication Circuit Diagram - Turbo Gauge
G03502683Courtesy of SAAB-SCANIA OF AMERICA, INC.