Gear-shift position sensor

WARNING: This page does not describe the selected car, but rather 8 other vehicles, including the 2006 Volvo S80, 2005 Volvo S80, 2004 Volvo S80, 2003 Volvo S80, and 2002 Volvo S80. However, it is still accessible from the selected car via links, so may be relevant.

Fig 1: Gear-Shift Position Sensor

Courtesy of VOLVO CARS OF NORTH AMERICA.

The gear-shift position sensor is located inside the transmission housing. It contains a Park / Neutral position (PNP) switch and switches which inform the transmission control module (TCM) about which gear is selected and whether back-up (reverse) gear is selected so that the reversing lamps are lit. The gear-shift position sensor is a position switch which is grounded via the chassis. The combination of pins A, B, C and PA indicate the current gear selector position (see the table in Fig 2). The trailing contacts can either be closed or open. The gear-shift position sensor is not available as a replacement part.

There are diagnostics for the gear-shift position sensor.

Fig 2: Table For Gear-Shift Position Sensor

Courtesy of VOLVO CARS OF NORTH AMERICA.

Table for the gear-shift position sensor

The value indicates the position of the gear-shift position sensor (A, B, C and PA), see the table in Fig 2.

• = High signal (open)

- = Low signal (grounded)