SHIFT UP indicator lamp

Fig 1: Identifying Communication Diagram - SHIFT UP Indicator Lamp

Courtesy of SAAB-SCANIA OF AMERICA, INC.

Fig 2: Identifying Communication Circuit Diagram - SHIFT UP Indicator Lamp

Courtesy of SAAB-SCANIA OF AMERICA, INC.

To achieve low fuel consumption, the SHIFT UP indicator lamp in the main instrument unit comes on when a higher gear should be engaged (certain markets).

The lamp is powered from the main instrument unit and is grounded by the main instrument unit control module. Trionic T7 sends continuous bus information SHIFT-UP, unit ON/OFF.

With SHIFT-UP on, the control module grounds the output for the lamp to turn it on.

After shifting up, Trionic T7 will change the status of the information to SHIFT-UP OFF and the lamp will go out.