Level switch, brake fluid (42): Connection

Fig 1: Identifying Level Switch, Brake Fluid

Courtesy of SAAB-SCANIA OF AMERICA, INC.

Sensor pin 1 is connected to BCM pin A 34. Sensor pin 2 is grounded in grounding point G 31 via crimp J12. When the brake fluid level is low, the float sinks, whereby the ring magnet actuates the reed element which in turn completes the circuit.

The control module input is digital; voltage above 2V is determined to be an open circuit and lower than 2V is determined to be closed.

See BUS AND DIAGNOSTICS COMMUNICATION .

Fig 2: Identifying Communication Diagram Of Level Switch

Courtesy of SAAB-SCANIA OF AMERICA, INC.