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Home >> VinFast >> 2023 >> VF9 Plus >> Repair and Diagnosis (Single Page) >> Steering >> Electronic Steering >> Power Steering System Diagnosis (2 Of 2) >> DTC U0146-87: Lost Communication With Serial Data Gateway Module (XGW) - Missing Message >> VinFast DTC Guided Repair Instruction >> Operating Conditions

Operating Conditions

Enable Criteria
  1. 3000 ms after IGN ON
  2. do not enter over range (Battery voltage is between 9V to 16V)
  3. after over range, go in to normal range (Battery voltage is between 9V to 16V) at least Restart (=500 ms) time
  4. Communication Control Diag.Service = enableRxAndTx or enableRxAndDisableTx
  5. ControlDTC Disable Diag.Service = On
  6. Vehicle CAN bus is normal (not Bus Off)
Failure Criteria
  1. Detection of related CCU TEMP PRESSURE (0x302) Message Missing
  2. Detection of related BCM_VOLTAGE (0x10A) Message Missing
  3. Detection of related IC_MILEAGE (0x331) Message Missing
Failure/Mature Time
  1. 5000 ms (+-10%)
  2. 2500 ms (+-10%)
  3. 500 ms (+-10%)
Pass Criteria
  1. CCU TEMP PRESSURE (0x302) Message received normally.
  2. BCM_VOLTAGE (0x10A) Message received normally.
  3. IC MILEAGE (0x331) Message received normally.
Pass/De-mature Time Immediately
Failure Aging 40 Ignition cycles