LEMON Manuals: Even more car manuals for everyone
Home >> Lexus >> 2009 >> LS 600hL >> Repair and Diagnosis >> Hybrid/Electric Powertrain >> Testing and Diagnosis >> Hybrid Vehicle Control (Diagnostic Codes (P0A7A-324 - P1557-887)) >> Hybrid Control System >> DTC P0A90-251: Drive Motor "A" Performance >> Description

DTC P0A90-251: Drive Motor "A" Performance: Description

When three-phase alternating current flows through the three-phase windings of the stator coil, a rotating magnetic field is generated in MG2. The system controls the rotation of the magnetic field in accordance with the rotating position and speed of the rotor. As a result, the permanent magnets provided in the rotor are pulled in the direction of rotation, generating torque. The generated torque is almost proportional to the amount of current. The system controls MG2 speed by regulating the frequency of the alternating current. Furthermore, the system properly controls the rotating magnetic field and the angle of the rotor magnets in order to generate high torque in an efficient manner, even at high speeds.

Fig 1: Identifying Drive Motor Components
GTY145158Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
DTC No. INF Code DTC Detection Condition Trouble Area
P0A90 251 Motor magnetic force deterioration or same phase short circuit
  • Hybrid vehicle transmission assembly
  • Inverter with converter assembly