Control Module

WARNING: This page does not describe the selected car, but rather 8 other vehicles, including the 2013 Volvo C70, 2012 Volvo C70, 2011 Volvo C70, 2010 Volvo C70, and 2009 Volvo C70. However, it is still accessible from the selected car via links, so may be relevant.

Fig 1: Identifying Left Power Seat Module (PSL)

Courtesy of VOLVO CARS CORPORATION

The power seat module, left (PSL) and power seat module, right (PSR) manage the functions for:

seat operation
storage of memory positions (seat positions only).

The control modules are located on the outside of the front seats and are integrated in the control panel. The side panels must be detached to replace the control modules.

The power seat module, left (PSL) and power seat module, right (PSR) communicate with both directly connected components and with other control modules via CAN communication.

The control modules check carried out activations and input and output signals via an integrated diagnostic system. A diagnostic trouble code (DTC) is stored in certain cases if the control modules detect a fault.

Any diagnostic trouble codes (DTCs) are stored in the control modules memory. The data can be read off using VIDA (Volvo scan tool).

A simple way to check that the power seat module, left (PSL) and power seat module, right (PSR) are supplied with power and grounded is to move the seat.

If the voltage is below 8.5 V or above 16.0 V, the power seat module, left (PSL) and power seat module, right (PSR) will not function. If the voltage increases to above 9.0 V or falls below 15.5 V, the control module will function again.

For further information, see SIGNALS .