Volvo Workshop Manuals
V50 L5-2.4L VIN 39 B5244S7 (2005)
Relays and Modules > Relays and Modules - Accessories and Optional Equipment > Communications Control Module > Component Information > Testing and Inspection > Initial Inspection and Diagnostic Overview > Page 299
For communication problems with control units onthe high-speed network, check communication cables between diagnostic outlet #6/ #14 and
For communication problems with control units onthe low-speed network, check communication cables between diagnostic outlet #3/#11 and
Also check the communication cables for the low and high-speed net between the central electronic module (CEM) and the other connected
Check that the control module's voltage feed and ground connection are trouble-free.
Caution! If none of the above checks help, try reading out diagnostic trouble codes in the central electronic module (CEM). Done via VIDA
VCT2000 and cable harness
Connect VCT2000 to the vehicle so that it is supplied with voltage. Test VCT2000 by selecting the system's self-test and VCT Test in the VIDA
If no malfunctions were found after troubleshooting according to above, try with a new cable harness and/or new VCT2000.
If no malfunctions were found after troubleshooting according to above, try performing a complete system reset of VIDA.
Checking wiring and terminals See: Testing and Inspection/Component Tests and General Diagnostics/Checking Wiring and Terminals
Continue - Fault-tracing information
Checking communication errors, car model V70 (00-), V70 XC (01-) / XC70, S60, S80 and XC90
Hint: Test the communication with another corresponding vehicle to decide if the malfunction is in the vehicle or in VIDA/VCT/cable harness. If the
Hint: For current information about each circuit and signals, see wiring diagram and signal description for each system.
Different speed on the CAN-communication can lead to problems
Volvo's vehicles have different speed of communication on the high-speed part of the CAN-network (HS-CAN), depending on model year.
Model year -2004 communicates with 250 kbit/s.
Model year 2005- communicates with 500 kbit/s.
Due to this, it is very important to specify correct vehicle profile before any communication is started with the vehicle's HS-CAN. This is normally done
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