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Home >> Lexus >> 2023 >> RC F Base >> Repair and Diagnosis >> External Pages >> Different car >> Section 17 (Torque Vectoring Differential System - Diagnostic Codes) >> Torque Vectoring Differential System >> DTC C2A0A: RH Inverter Circuit; DTC C2A0B: LH Inverter Circuit [09/2014 - 01/2023] >> Description
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DTC C2A0A: RH Inverter Circuit; DTC C2A0B: LH Inverter Circuit [09/2014 - 01/2023]: Description

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When a three-phase AC current flows though the three-phase coil of the stator, a rotating magnetic field is generated in the TVD motor. The torque vectoring differential system rotates the magnetic field by switching the transistors in the ECU on and off according to the angle and rotational speed of the rotor. The voltage of each phase (U, V and W) and operation of the transistors is monitored. A DTC is stored when a malfunction is detected in the TVD motor drive circuit.

DTC No. Detection Item DTC Detection Condition Trouble Area Warning Indicate
C2A0A RH Inverter Circuit Diagnosis Condition:
  • PIG power source voltage is 10 V or more.

Abnormal condition:
  • Open or short in the TVD motor drive circuit

Malfunction Time:
  • 0.5 seconds or more

Trip logic:
  • 1 trip detection logic
  • Torque vectoring differential ECU assembly
  • Torque transfer module motor sub-assembly (RH side)
  • Wire harness or connector
  • Master Warning Light: Comes on
  • Multi-information Display Error Message: Comes on
C2A0B LH Inverter Circuit Diagnosis Condition:
  • PIG power source voltage is 10 V or more.

Abnormal condition:
  • Open or short in the TVD motor drive circuit

Malfunction Time:
  • 0.5 seconds or more

Trip logic:
  • 1 trip detection logic
  • Torque vectoring differential ECU assembly
  • Torque transfer module motor sub-assembly (LH side)
  • Wire harness or connector
  • Master Warning Light: Comes on
  • Multi-information Display Error Message: Comes on