XC70 L5-2.5L Turbo VIN 59 B5254T2 (2003)
The gear-shift position sensor is mounted on the top of the transmission housing, on the gear shift linkage rod. The gear selector contains a Park/
Neutral position (PNP) switch and connectors which inform the transmission control module (TCM) about which gear is selected and if the back-up
gear is selected so that the reversing lamps can be lit. The gearshift position sensor is a position switch which is supplied via +15. A number of trailing
contacts supply power to the sensor outputs. The combination of pins A, B, C and PA indicate the current gear selector position (see the table). The
trailing contacts can either be closed or open.
There are diagnostics for the gear-shift position sensor.
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.
+ = High signal (open)
- =Low signal (grounded)
Gear selector module (GSM)
The gear selector assembly is in the tunnel console. It is mechanically connected to the transmission by a cable which moves the gear valve in the
transmission control system. The gear selector module (GSM) is positioned on the top panel of the gear selector assembly. The gear selector module
(GSM) uses serial communication to communicate with the transmission control module (TCM) to light the gear position indicator. The indication
occurs via LEDs in the top panel.