LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Volvo >> 2011 >> S40 T-5 R-Design >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control Module (ECM) Fault Tracing - General Information (544 Body) >> Fault Tracing >> Construction Of The Network >> General Information
July 1: So it begins. Don't worry, this is not in the correct legal jurisdiction!

General Information

The network is made up of a number of control modules (sometimes called nodes)which are connected to each other serially via two communication cables. Each control module is supplied with power and grounded individually and receives messages /commands via the two communication cables. In both networks (high and low speed sides) the control modules are serially connected. In the event of an open-circuit those control modules beyond the open-circuit will not be able to communicate with other parts of the network.