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Home >> VinFast >> 2023 >> VF8 Eco >> Repair and Diagnosis (Single Page) >> Accessories & Equipment >> Entertainment Systems >> Multimedia System Diagnosis (1 Of 2) >> DTC U0422-83: Invalid Data Received from Body Control Module - Value of Signal Protection Calculation Incorrect >> VinFast DTC Guided Repair Instruction >> Operating Conditions
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Operating Conditions

Enable Criteria
  1. Ignition ON
  2. The system battery voltage is between 9V and 16V
Failure Criteria ANY ONE of the following checksum signals is not equal to the expected value according to CAN specification:
BCM_LOGICAL_CLAMP_0x102.CHKSM_BCM_LOGICAL_CLAMP
BCM_STAT_DOOR_FLAP_0x105.CHKSM_BCM_STAT_DOOR_FLAP
BCM_LIGHT_0x106.CHKSM_BCM_LIGHT
BCM_VOLTAGE_0x10A.CHKSM_BCM_VOLTAGE
BCM_CLAMP_STAT_0x112.CHKSM_BCM_CLAMP_STAT
BCM_ODO_0x319.CRC_BCM_ODO
Failure/Mature Time Immediate
Pass Criteria ALL of the following checksum signals are equal to the expected value according to CAN specification:
BCM_LOGICAL_CLAMP_0x102.CHKSM_BCM_LOGICAL_CLAMP
BCM_STAT_DOOR_FLAP_0x105.CHKSM_BCM_STAT_DOOR_FLAP
BCM_LIGHT_0x106.CHKSM_BCM_LIGHT
BCM_VOLTAGE_0x10A.CHKSM_BCM_VOLTAGE
BCM_CLAMP_STAT_0x112.CHKSM_BCM_CLAMP_STAT
BCM_ODO_0x319.CRC_BCM_ODO
Pass/De-mature Time Immediate
Failure Aging 100 Ignition Cycles