Audi Q7: Fuel Supply

 Cooling Output, Checking

Special tools and workshop equipment required Vehicle Diagnostic Tester with the "Guided Fault Finding" function and the corresponding connection lines. Refer to Workshop Equipment. A standard thermometer (for temperature measurement; if necessary, a thermometer with two measuring probes for

 CAN-Bus Terminal Resistance, Checking

General Description The Engine Control Module -J623- communicates with other CAN-Bus capable control modules. The control modules are connected by two data bus wires which are twisted together (CAN_High and CAN_Low), and exchange information (messages). Missing information on the CAN-bus is reco