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1、Welcome to “CAN-bus Vectra-C” Welcome to “CAN-bus Vectra-C” Please be so kind to switch OFF your mobile phone Jeroen SmetsersJeroen Smetsers Service Training Specialist / Developer CAN-bus Vectra-C Subjects covered: Introduction to CAN-bus Physical properties of the CAN-busses The CAN-bus protocol N
2、etwork topology Functional systems Diagnosis Programming 1. Introduction to CAN-bus1. Introduction to CAN-bus 01.02 S1 01.02 S2 01.02 S3 01.03 S1 01.03 S2 01.03 S3 CAN-bus communicationHuman vocal communication Bus-protocolLanguage with grammar Data frameSentences Data fieldsWords Bits 0/1Letters 2.
3、 Physical properties of the CAN-busses 2. Physical properties of the CAN-busses 02.01 S1 High-Speed Bus HSCAN Used forPowertrain and chassis systems Bus ProtocolGMLAN Transmission rate500 kbit/s Wire techniqueDual-wire Transmission of one frame lastsApprox. 0.25 ms Wake-up methodVoltage supply K-lin
4、e 15 TopologyLinear Bus cut-off resistors120 resistance at each end of the chain Max. number of control units16 (15 + tester) Max. cable lengths25 m cumulative length in vehicle plus 5 m to tester 02.01 S2 Mid-Speed Bus MSCAN Used forEntertainment/info. Systems and ECC Bus ProtocolIVLAN Transmission
5、 rate95.24 kbit/s Wire techniqueDual-wire Transmission of one frame lastsApprox. 1.25 ms Wake-up methodVoltage supply K-line 15 TopologyLinear Bus cut-off resistors120 resistance at each end of the chain Max. number of control units16 (15 + tester) Max. cable lengths25 m cumulative length in vehicle
6、 plus 5 m to tester 02.01 S3 Low-Speed Bus LSCAN Used forBody and comfort systems (lighting, electric windows, windscreen wipers, etc.) Bus ProtocolGMLAN Transmission rate33.3 kbit/s or 83.3 kbit/s for programming Wire techniqueSingle-wire Transmission of one frame lastsApprox. 3.5 ms Wake-up method
7、High level voltage (12 Volts) TopologyLinear Bus cut-off resistors9.09 k or 3.9 k in each control unit Max. number of control units32 (31 + tester) Max. cable lengths55 m cumulative length in vehicle plus 5 m to tester 02.01 S4 CAN-LCAN-H 02.01 S5 1.44 V 2.52 V B 2.52 V 3.48 V A 02.01 S1 02.01 S2 02
8、.01 S6 3.96 V A 02.01 S3 9.09 k : UEC PAS AHS/PHS SDM SLM TPMS TID/GID 3.9 k : IPC BCM DDM PDM CIM DSM SRM REC TerminalSignalTerminalSignal 1CAN-H (LSCAN)9- 2-10- 3CAN-H (MSCAN)11CAN-L (MSCAN) 431, ground12KW 82 (Navigation, GPS unit and car phone radios) 531, ground13- 6CAN-H (HSCAN)14CAN-L (HSCAN)
9、 7-15- 8KW 2000 (Basic radios + Telematic unit) 1630, 12V supply 3. The CAN-bus protocol3. The CAN-bus protocol 03.01 S1 CAN-bus communicationHuman vocal communication Bus protocolLanguage with grammar Data frameSentences Data fieldsWords Bits 0/1Letters 03.01 S2 03.02 S1 HSCAN $0=False Data Diction
10、ary Look up the identifiers of the Column Switch Activations frame in the Low Speed Data Dictionary. Which module transmits this frame? Which module(s) use(s) this frame (receivers)? How many signals are contained in the frame? What events will trigger the Turn Switch Activation signal to be sent? W
11、hat different values can the Turn Switch Activation Signal have? Does the UEC receive and use the Turn Switch Activation Signal? Does the UEC receive and use other information from the Column Switch Activations frame? Data Dictionary Look up the identifiers of the Column Switch Activations frame in
12、the Low Speed Data Dictionary. ID: $175 Which module transmits this frame? CIM Which module(s) use(s) this frame (receivers)? BCM, DIS, DSM, REC, UEC How many signals are contained in the frame? 13 What events will trigger the Turn Switch Activation signal to be sent? Any change in the signal will t
13、rigger the frame to be sent. If the signal does not change, it will never be sent. What different values can the Turn Switch Activation Signal have? No Activation, Left, Right Does the UEC receive and use the Turn Switch Activation Signal? Yes Does the UEC receive and use other information from the
14、Column Switch Activations frame? Yes Data Dictionary Look up the identifiers of the Airbag and Seat Belt Info frame in the Low Speed Data Dictionary. Which module transmits this frame? Which module(s) use(s) this frame (receivers)? How many signals are contained in the frame? What events will trigge
15、r the Airbag Deployed signal (frame) to be sent? What different values can the Airbag Deployed Signal have? Does the REC receive and use the Airbag Deployed Signal? Does the REC receive and use other information from the Airbag and Seat Belt Info frame? Data Dictionary Look up the identifiers of the
16、 Airbag and Seat Belt Info frame in the Low Speed Data Dictionary. ID: $090 Which module transmits this frame? SDM Which module(s) use(s) this frame (receivers)? BCM, CIM, DIS, IPC, REC, UEC How many signals are contained in the frame? 5 What events will trigger the Airbag Deployed signal (frame) to
17、 be sent? It is send periodically only. What different values can the Airbag Deployed Signal have? True, False Does the REC receive and use the Airbag Deployed Signal? Yes Does the REC receive and use other information from the Airbag and Seat Belt Info frame? No Data Dictionary Look up the identifi
18、ers of the Sun Roof Information frame in the Low Speed Data Dictionary. Which module transmits this frame? Which module(s) use(s) this frame (receivers)? How many signals are contained in the frame? What events will trigger the Sun Roof Position signal (frame) to be sent? What different values can t
19、he Sun Roof Position Signal have? Does the DDM receive and use the Sun Roof Position Signal? Does the DDM receive and use other information from the Sun Roof Position frame? Data Dictionary Look up the identifiers of the Sun Roof Information frame in the Low Speed Data Dictionary. ID: $450 Which mod
20、ule transmits this frame? SRM Which module(s) use(s) this frame (receivers)? DIS How many signals are contained in the frame? 4 What events trigger the Sun Roof Position signal (frame) to be sent? It will be sent periodically, when the position changes 5% or when the roof reaches the top or bottom p
21、osition. What different values can the Sun Roof Position Signal have? 0-100% Does the DDM receive and use the Sun Roof Position Signal? No Does the DDM receive and use other information from the Sun Roof Position frame? No Data Dictionary Look up the identifier of the Engine Speed and Pedal Position
22、 frame in the High Speed Data Dictionary. Which module transmits this frame? Which module(s) use(s) this frame (receivers)? How many signals are contained in the frame? What events will trigger the Engine Speed signal (frame) to be sent? What different values can the Engine Speed Signal have? Does t
23、he EHPS receive and use the Engine Speed Signal Signal? Does the EHPS receive and use other information from the Engine Speed and Pedal Position frame? Data Dictionary Look up the identifier of the Engine Speed and Pedal Position frame in the High Speed Data Dictionary. ID: $110 Which module transmi
24、ts this frame? ECM Which module(s) use(s) this frame (receivers)? ABS/TCS, CIM, EPS, IPN, TCM How many signals are contained in the frame? 10 What events will trigger the Engine Speed signal (frame) to be sent? It will be sent periodically, i.e. every 10ms. What different values can the Engine Speed Signal have? 0-16383.8 rpm Does the EHPS receive and use the Engine Speed Signal Signal? Yes Does the EHPS receive and use other information from the Engine Speed and Pedal Position frame? Yes