System Overview

System Overview

Control module







The task of the power seat module is to manage the following functions:
- Seat maneuvering.
- Storage of memory positions (seat positions only).

The control module is under the seat on the driver's side. The seat must be removed in order to replace the control module.

The power seat module is directly connected to components and to other control modules via CAN communication.

The control module checks activations and input and output signals through an integrated diagnostic system A diagnostic trouble code (DTC) is stored in certain cases if the control module detects a fault.

Diagnostic trouble codes (DTC) are stored in the control module memory. The data can be read off using the diagnostic tool.

A simple way to check that the power seat module (4/52) is 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 will not function. If the voltage increases to 9.0 V or falls to 15.5 V the control module will function again.

For information, also see Signal specifications.

Signals
The table below summarizes input and output signals to and from the power seat module (4/52). The signal types are divided into directly connected signals, serial communication and Control area network (CAN) communication. The illustration below displays the same information with the Volvo part numbers.