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Home >> VinFast >> 2023 >> VF9 Eco >> Repair and Diagnosis >> Body & Frame >> Towing Systems >> Trailer Module Diagnosis >> DTC U0447-82: Invalid Data Received From Serial Data Gateway Module (XGW) - Alive/Sequence Counter Incorrect/Not Updated >> 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.
DTC U044783 (XGW Invalid Signal Protection) is not set.
Failure Criteria Alive counter is not updated 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 Alice counter is properly updated 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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