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Home >> VinFast >> 2023 >> VF9 Eco >> Repair and Diagnosis >> Body & Frame >> Towing Systems >> Trailer Module Diagnosis >> DTC U0447-83: Invalid Data Received From Serial Data Gateway (XGW) - Value Of Signal Protection Calculation Incorrect >> VinFast DTC Guided Repair Instruction >> Operating Conditions
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Operating Conditions

Enable Criteria Ignition ON.
Battery Voltage is between 9V and 16V.
DTC U300004 (Trailer Module System Failure) is not set.
DTC U117488 (Body CAN - Bus Off) is not set.
DTC U014687 (XGW Missing Message) is not set
Failure Criteria Checksum calculation is not correct for XGW message:
  1. EDS_OutPut_FR (0x1F8) or
  2. EDS_Output_RR (0x1F9) or
  3. IDB_STATUS (0x20D) or
  4. IC_SENSOR (0x2CA) or
  5. MHU_FOTA_STATUS (0x432)
Failure/Mature Time Immediate
Pass Criteria Checksum calculation is correct for XGW message:
  1. EDS_OutPut_FR (0x1F8) and
  2. EDS_Output_RR (0x1F9) and
  3. IDB_STATUS (0x20D) and
  4. IC_SENSOR (0x2CA) and
  5. MHU_FOTA_STATUS (0x432)
Pass/De-mature Time 1000 ms
Failure Aging 40 Ignition Cycles
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