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You don't understand. The engine control unit is most likely defective. Power transistors burn out. Check each phase of this block, as I wrote earlier. There should be half the voltage on each phase. If the voltage is different, repair of the control unit or a new unit is required.
Thank you for the replying!! I disassemble the engine motor and reassemble in other forklift and operates properly but sounds subnormal. No sound from bearing, no error code dislay
Most likely, one of the engine phases is faulty. Measure the voltage between the negative "-" of the battery and the phase on the engine. The voltage should be half the battery voltage.
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