Example 1:

The codes stored in the DTC memories enable you to establish that Control Module 1 has no connection to Control Modules 2 and 3.

Fig 1: Malfunction Messages In CAN Bus System - Example 1

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Fig 2: CAN Bus System Schematic - Example 1

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• Switch the ignition off.
• Disconnect the control modules connected via the bus lines and check whether one of the bus lines has a breakage.