General

General





Warning! SIPS Airbag Read warning text for SIPS Airbag SIPS Airbag.

The power seat is available as a factory-fitted option. It can be installed instead of the standard seat on both driver and passenger positions.
The power seat has three memory buttons for storing three different seat positions.
1992-1995 cars have an earlier type of on-board diagnostic (OBD) system.
From 1996 models onward, an improved on-board diagnostic (OBD) system has been introduced.
Volvo Scan Tool (ST), Serial communication and text display explains how to use the improved on-board diagnostic (OBD) system. See also Diagnostic functions Diagnostic Functions.

Note! When replacing the control module with a new module always check that the new control module has P/N 9174904 (left seat) or 9174905 (right seat). The earlier type of control module has a different type of diagnostics. The older versions operate correctly with the different seat functions, but their diagnostic system cannot communicate with the Volvo Scan Tool (ST).

The control module located under the seat cushion operates four different motors in all. Three of the motors are located under the seat, the fourth is located in the backrest.
The control module with memory receives information on the seat position from signals from four position sensors. These are potentiometers driven by a worm gear on the output shaft of each motor.