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Home >> VinFast >> 2023 >> VF8 Plus >> Repair and Diagnosis >> Body & Frame >> Seats >> Driver Power Seat Module Diagnosis >> DTC U0146-87: Lost Communication With Serial Data Gateway Module "A" - Missing Message >> VinFast DTC Guided Repair Instruction >> Operating Conditions
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Operating Conditions

Enable Criteria
  1. Ignition ON
  2. Currently no CAN BUS OFF fault
Failure Criteria Monitored message IDB_STATUS (0x20D) or
MHU_SEAT_CONTROL (0x40C) is timeout for Mature Time consecutively more than 5 times, lost communication can be confirmed.
Failure/Mature Time 200 ms (0x20D)
1000 ms (0x40C)
Pass Criteria Monitored message is received correctly more than 5 times in a row.
Pass/De-mature Time 100 ms
Failure Aging 30 Ignition cycles
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