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Home >> VinFast >> 2023 >> VF8 Plus >> Repair and Diagnosis (Single Page) >> Hybrid/Electric Powertrain >> Testing and Diagnosis >> Vehicle Control Diagnosis (9 Of 10) >> DTC U091A-00: Drive Motor Control Module "B" Error Level 4 & Active Short Circuit >> VinFast DTC Guided Repair Instruction >> Operating Conditions

Operating Conditions

Enable Criteria Ignition is active AND Wheel drive mode is AWD or FWD
Failure Criteria Rear EDS error level (Interface: EDS_FailGrade_ERR_RWD [0x439] on PT CAN) == 4 AND Rear EDS IGBT state (Interface: EDS_IGBTState_RWD [0x239] on PT CAN) == 1 "Up Bridge ASC" or 2 "Down Bridge ASC".
Failure/Mature Time 100 ms
Pass Criteria Rear EDS error level (Interface: EDS_FailGrade_ERR_RWD [0x439] on PT CAN)! = 4 OR Rear EDS IGBT state (Interface: EDS_IGBTState_RWD [0x239] on PT CAN) == 1 "Up Bridge ASC" or 2 "Down Bridge ASC".
Pass/De-mature Time 200 ms
Failure Aging 40 driving cycles without failure