02830

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02830 - Control Circuit for CAN Isolator for Driver Assistance Systems

02830 - Control Circuit for CAN Isolator for Driver Assistance Systems: Electrical Fault in Circuit

Possible Causes

  • Supply Voltage insufficient
  • Control Module Coding incorrect

Possible Solutions

  • Check Control Module Power Supply
  • Check CAN-Gateway Coding (see Vehicle specific Diagnostic Procedures).
  • Check CAN-Databus Powertrain Cut-Off Relay (J788)
    • Check Measuring Value Blocks (MVB)
    • Perform Output Test and check for an audible noise while the Relay is being actuated.

Special Notes

  • When found in VW Passat (3C): CAN-Gateway, check Measuring Value Block (MVB) 002.3 while cycling the Ignition. It should change between active and passive.
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