Inner components
1
Controller housing
2
Power MOSFET / IGBT stage
3
DC-link capacitors
4
Microcontroller
5
Gate driver circuit
6
Current sensors
7
Voltage sensing circuit
8
Signal conditioning circuits
9
Throttle input circuit
10
Hall sensor interface
11
Communication interface
12
3-phase U/V/W output
13
Heat sink
14
Power connectors
15
Signal connectors
Diagnostic tips
1
Check battery input voltage and polarity.
2
Check U, V and W phase outputs and resistance.
3
Inspect MOSFETs for short circuit or abnormal resistance.
4
Check Hall sensor and throttle signals.
5
Check controller fault codes and communication.
6
Inspect connectors for loose pins, corrosion or overheating.
7
Ensure proper heat dissipation and mounting.
