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Home >> VinFast >> 2023 >> VF9 Plus >> Repair and Diagnosis (Single Page) >> Steering >> Electronic Steering >> Power Steering System Diagnosis (1 Of 2) >> DTC U1818-83: Driving Mode - Value Of Signal Protection Calculation Incorrect >> VinFast DTC Guided Repair Instruction >> Repair Instruction

Repair Instruction

Repair Actions

  1. Check for communication faults with MHU/VCU from other ECU's and investigate faults with MHU/VCU.
  2. If fault returns, check for communication faults from the Chassis CAN Communication BUS linking EPS1 and MHU/VCU and investigate faults with Chassis CAN Communication BUS.
  3. If fault returns, check electrical circuits between EPS1 and MHU/VCU, repair if faulty and clear DTC.
  4. If fault returns, replace MHU/VCU and clear DTC.
  5. If fault returns, replace EPS and clear DTC.