LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> VinFast >> 2023 >> VF8 Eco >> Repair and Diagnosis (Single Page) >> Accessories & Equipment >> Communication Devices >> Communication Gateway Diagnosis (1 Of 2) >> DTC U1630-81: Invalid Data Received from Multi-Function Switch Control Module - Invalid Serial Data Received >> VinFast DTC Guided Repair Instruction >> Operating Conditions
April 5, 2026: LEMON Manuals is launched! Read the announcement.

Operating Conditions

Enable Criteria Ignition On for 2s
Failure Criteria At least one MFS's signals
MFS_SourseControl, MFS_UpControl, MFS_DownControl, MFS_LeftControl, MFS_RightControl, MFS_OK_Control, MFS_LDWControl, MFS_CruiseOn_Off, MFS_CruiseSpeedIncrease, MFS_CruiseSpeedDecrease, MFS_CruiseGapIncrease, MFS_CruiseGapDecrease, MFS_TelephoneCall_EndCall, MFS_VoiceRecognitionOn_Off, MFS_MUTE_MIC, MFS_SONG_U, MFS_SONG_D, MFS_VOL_U, MFS_VOL_D received with Signal Invalid value.
Failure/Mature Time 500 ms
Pass Criteria All MFS's signals MFS_SourseControl, MFS_UpControl, MFS_DownControl, MFS_LeftControl, MFS_RightControl, MFS_OK_Control, MFS_LDWControl, MFS_CruiseOn_Off, MFS_CruiseSpeedIncrease, MFS_CruiseSpeedDecrease, MFS_CruiseGapIncrease, MFS_CruiseGapDecrease, MFS_TelephoneCall_EndCall, MFS_VoiceRecognitionOn_Off, MFS_MUTE_MIC, MFS_SONG_U, MFS_SONG_D, MFS_VOL_U, MFS_VOL_D received with valid value.
Pass/De-mature Time 0 ms
Failure Aging 20 Ignition Cycles