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Home >> VinFast >> 2023 >> VF9 Eco >> Repair and Diagnosis >> Body & Frame >> Towing Systems >> Trailer Module Diagnosis >> DTC U0146-87: Lost Communication With Serial Data Gateway Module (XGW) - Missing Message >> 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.
Failure Criteria 10 x message cycle time (10 x period according to CAN DBC matrix) with no message received.
  1. EDS_OutPut_FR (0x1F8) and
  2. EDS_Output_RR (0x1F9) and
  3. IDB_STATUS (0x20D) and
  4. IC_SENSOR (0x2CA) and
  5. MHU_DATE_TIME (0x2F8) and
  6. MHU_FOTA_STATUS (0x432)
Failure/Mature Time
  1. 0x1F8 (200 ms)
  2. 0x1F9 (200 ms)
  3. 0x20D (200 ms)
  4. 0x2CA (1000 ms)
  5. 0x2F8 (10000 ms)
  6. 0x432 (5000 ms)
Pass Criteria All XGW messages are received:
  1. EDS_OutPut_FR (0x1F8) and
  2. EDS_Output_RR (0x1F9) and
  3. IDB_STATUS (0x20D) and
  4. IC_SENSOR (0x2CA) and
  5. MHU_DATE_TIME (0x2F8) and
  6. MHU_FOTA_STATUS (0x432)
Pass/De-mature Time 1000 ms
Failure Aging 40 Ignition Cycles
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