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Home >> VinFast >> 2023 >> VF9 Eco >> Repair and Diagnosis (Single Page) >> Accessories & Equipment >> Entertainment Systems >> Multimedia System Diagnosis (2 Of 2) >> DTC U040F-83: Invalid Data Received From Redundant Control Unit 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:
RCU_WarnMsg (0x4A7). CHSKM_RCU_WarnMsg
Failure/Mature Time Immediate
Pass Criteria ALL of the following checksum signals are equal to the expected value according to CAN specification: RCU_WarnMsg (0x4A7). CHSKM_RCU_WarnMsg
Pass/De-mature Time Immediate
Failure Aging 100 Ignition Cycles
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