Position sensor, sixth bow raised, (578u): Connection

WARNING: This page is about a different car, the 2011 Saab 9-3 and 2010 Saab 9-3. However, it is still accessible from the selected car via links, so may be relevant.

CONNECTOR PIN DESCRIPTION

Pin No.	Signal type	Description
2	Power supply B+	From the control module, STC
3	Signal output	Sixth bow not raised (unaffected sensor) = 2.4-3.4 V Sixth bow raised (affected sensor) = 0.4-1.2 V

Fig 1: Position Sensor - Communication Diagram

Courtesy of SAAB-SCANIA OF AMERICA, INC.

The sensor is connected to the STC control module with two leads. The sensor is energized with B+ on pin 2 and gives information to the STC control module on pin 3.

The sensor is affected by the cylinder piston. The sensor is affected when the piston is in its upper position and the sixth bow is raised.

Diagram

Fig 2: Position Sensor - Circuit Diagram

Courtesy of SAAB-SCANIA OF AMERICA, INC.