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Home >> VinFast >> 2023 >> VF9 Plus >> Repair and Diagnosis (Single Page) >> Hybrid/Electric Powertrain >> Testing and Diagnosis >> Vehicle Control Diagnosis (03 Of 10) >> DTC P1021-81: Acoustic Vehicle Alerting System (AVAS) Control Module "A" - Invalid Serial Data Received >> VinFast DTC Guided Repair Instruction >> Operating Conditions

Operating Conditions

Enable Criteria Ignition is active.
Failure Criteria PTC temperature sensor fault status (Interface: HV_PTC_TempSens_Flt [0x16] on LIN1) == 1 "Temperature sensor fault active".
Failure/Mature Time 10000ms
Pass Criteria PTC temperature sensor fault (Interface: HV_PTC_TempSens_Flt [0x16] on LIN1) == 0 "NO temperature sensor fault detected".
Pass/De-mature Time 20000ms
Failure Aging 40 driving cycles without failure