| Checking convenience data bus |
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| If the connector has been detached from a control unit connected to the convenience data bus and the ignition is switched on, this may result in a fault entry in the other control units connected to the data bus system. The same applies if, for example, the power supply is interrupted by removing a fuse. |
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| The control unit in the dash panel insert -J285- forms the interface between the two data bus systems. It is also the dominant control unit in the convenience data bus, into which those control units which are linked to the convenience data bus in the vehicle concerned (depending on features) are entered by way of the adaption function. → Electrical System; Repair group 01 |
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