Faulty Generator Motor
Generator Motor harness is open or shorted
Generator Motor circuit poor electrical connection
Faulty Motor Power Inverter (MPI) Module
Faulty Motor Control Module (Generator)
Engine Light ON (or Service Engine Soon Warning Light)
An open in the gate drive-wire, an OFF failure of the Motor Power Inverter (MPI) Module (generator), an open in the three-phase line, an open in the generator motor power cable, or an open in the generator motor coil causes a deviation from the target torque value of the generator motor. The motor control module (generator) detects these system failures by monitoring each phase current change.
Occurrence of open in the gate drive-wire, the motor power cable line, or the MPI module (generator) OFF failure causes decrease in inflow or outflow of the current of the failed phase (inflow decreases in the event of High side open and outflow decreases in the event of Low side open) causing distortion of the current from the other two phases. As a result, the deviation between the target phase current and actual phase current increases significantly. Malfunction is detected according to deviation of the phase current.