Volvo Workshop Manuals
XC70 L5-2.5L Turbo VIN 59 B5254T2 (2003)
Powertrain Management > Computers and Control Systems > Information Bus > Component Information > Testing and Inspection > Initial Inspection and Diagnostic Overview > Page 4347
Information Bus: Symptom Related Diagnostic Procedures
No diagnostic trouble codes are displayed.
Short circuit between bus wires
Contact resistance and oxidation.
No indicators are working
Central locking does not work
Interior lighting does not work.
Checking For A Short-Circuit In the CAN Bus System, Low Speed Network
Checking for a short-circuit in the CAN bus system, low speed network
Checking for a short-circuit
Disconnect the upper electronic module from the bus cable (disconnect the connector from the control module).
Note! Take care that you measure directly at the connector so that it is not damaged.
If the resistance is 0 ohms between the terminals, there short-circuit somewhere in the bus system.
To connect the breakout box to the upper electronic module, see Connecting the breakout box See: Body and Frame/Body Control
For further information about the connectors and bus cable, see the wiring diagram.
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