The CAN-LIN-BUS test stand was provided by the Volkswagens AG from original construction units VW-Golf 5 (PQ35). Special value was put with the conception on a close-to-reality representation of the components and their connections, so that original documents and connection diagrams of the Volkswagens AG can be used.

The lighting system is only one subsystem from the system VW-Golf and the individual subsystems over the CAN data lines information exchanges there and information divides, emerges also with the actually intact system lighting system error messages in the error memory, which refers to missing information from other controllers, e.g. the engine equipment. That is didactically desired in this case, since so on the one hand the cross-linking of the lighting system with the other systems of the vehicle becomes clear and an extension of the lighting system with other vehicle systems over the CAN bus is possible on the other hand at any time.

In the course of the production Golf changes at electrical system are made factory-installed again and again, i.e. that the vehicles of different model years differ, one cannot rely thus on the fact that the line colours indicated in the circuit diagrams agree with those in the vehicle and/or at the lighting wall. It would not be to be simplified possible in principle the lines, that would be however to the one practical and on the other hand is also questionable it whether the user the available the documents (e.g. ERWIN) agree with the version of the plant. In this case it is more meaningful and practical to orient itself at the pin designations of the patch cords. Both in the circuit diagrams and also are indicated at the plugs. Thus the looked for lines can be assigned free of doubts.

For the connections between the original components no standardized patch cords (e.g. Sub-D-plugs) are used, but the original connections. While handling these plugs it is to be made certain that many types have a bolting device, which is to be opened with the loosening of the patch cord. With the release plugs and clutch must be seized, in no case may on the lines be pulled in each case, since otherwise easily the pins from the plugs tear. By the assembly of the components on a raster plate will all lines and patch cords accessible, it can thus as at the vehicle measurements of the pins of the plugs be accomplished.

CAN – basic level Golf V

1. Headlight combination
2. Auxiliary brake light
3. License plate light
4. Combination instrument
5. Fog headlight
6. Rear fog lamp
7. Electrical system controller
8. Wiper engine
9. CAN function box
10. Steering column controller with control elements
11. Gateway equipment
12. Back light combination
13. Control elements lighting
14. Back-up light
15. Connectors for additional lighting units or measuring points 

CAN function box

The CAN function box is the central interface of the lighting conditions. By the box the current supply and the connection are made from components and extensions. For the fault-tracing the analysis of CAN and LIN bus signals can be attached diagnose units and CAN Dongle.

• The current supply for the system and for the individual components is made by the plugs at the left side (2).
• As voltage supply will a stabilized power supply unit with 12 or 13.8 V of DC voltage and a sufficient power output (at least 200 Watts) recommended, alternatively can also a starting battery be used.
• The current supply can be controlled over two diodes, and the clamp 15 can be switched over a rocker switch to the CAN function box (5).
• The components and extensions are connected by 25-pin patch cords (1) (and plugs for voltage supply) with the system.
• The connection with diagnose units is made by the 16-polige patch cord according to VW standard.
• CAN and LIN penalty as well as the k-line are individually led out over 7 pin Sub D sockets and can be queried with a CAN and/or a LIN Dongle (4). 
  

Possibilities for employment

• Connect from CAN bus components by D-Sub 25 P
• Connect from Lin bus components by D-Sub 25 P
• Connect from K Line components by D-Sub 25 P
• Connections for CAN OE/CAN Dongle for all busses
• CAN drive
• CAN comfort
• CAN combi
• CAN diagnosis
• CAN infotainment
• LIN comfort
• LIN electrical system
• K Line
• Inserted ISO diagnosis socket fully occupies inclusive K LINE
• Suitable to describing, diagnosis, coding the components
• Distribute voltage supply over earthing contact sockets 4 mm and D-Sub 25 P
• Adjustable KL 15 e.g. for describes EDC or Simos controller
• LED display of the status KL 15 and KL 30

Connection overview

• 6 components by D-Sub 25 P
• 8 x Dub 9 P for CAN OE/CAN Dongle
• 4 x earth front
• 4 x KL 15 front
• 4 x KL 30 front
• 2 x earth side view
• 2 x KL 15 side view
• 2 x KL 30 side view 
   

As recommendable accessories among other things fully functional driver door simulation board with real components, a trailer module, a measuring box and an error switching box for the simulation of the eight CAN errors according to DIN can be offered. In addition to this, also under offer the supplementing accessories - The PCAN Explorer - a Software tool for the monitoring of CAN data traffic and PCAN-USB ISO - For the simple binding in CAN networks of the specification 2.0A and 2.0B with a maximum Baud rate of 1 MBit/s. The USB to CAN converter is suitable for the employment at laptops and Notebooks.