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Home >> VinFast >> 2023 >> VF9 Eco >> Repair and Diagnosis >> Body & Frame >> Towing Systems >> Trailer Module Diagnosis >> DTC U0422-82: Invalid Data Received From Body Control Module (BCM) - 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 U014087 (BCM Missing Message) is not set.
DTC U042283 (BCM Invalid Signal Protection) is not set.
Failure Criteria Alive counter is not updated properly for BCM message:
  1. BCM_LIGHT (0x106) or
  2. BCM_SwitchSts (0x109 or
  3. BCM_VOLTAGE (0x10A) or
  4. BCM_CLAMP_STAT (0x112).
Failure/Mature Time Immediate
Pass Criteria Alive counter is properly updated for BCM message
  1. BCM_LIGHT (0x106) and
  2. BCM_SwitchSts (0x109 and
  3. BCM_VOLTAGE (0x10A) and
  4. BCM_CLAMP_STAT (0x112))
Pass/De-mature Time 1000 ms
Failure Aging 40 Ignition Cycles
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