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Home >> VinFast >> 2023 >> VF9 Plus >> Repair and Diagnosis (Single Page) >> Hybrid/Electric Powertrain >> Electric Motor Systems >> Front/Rear Drive Motor Control Diagnosis (1 Of 2) >> DTC U0122-87: Lost Communication With Vehicle Dynamics Control Module - Missing Message >> VinFast DTC Guided Repair Instruction >> Operating Conditions

Operating Conditions

Enable Criteria Ignition ON
Failure Criteria VCU 0x229 message not received
10xmessage cycle time (10*20 ms)
  1. Lost Communication with Vehicle Dynamics Control Module - Missing Message
  2. Level2 Functional Safety Monitoring Communication timeout with VCU - General Electric Failure
Failure/Mature Time 200 ms
Pass Criteria VCU 0x229 message received
1 2 General Electric Failure
Pass/De-mature Time 200 ms
Failure Aging 40 Ignition cycles.
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