DTC P0A78-272 Drive Motor "A" Inverter Performance: Description
WARNING: This page is about a different car, the 2006 Lexus RX 400h. However, it is still accessible from the selected car via links, so may be relevant.
The inverter switches the power transistor on and off based on a driving signal sent from the MG ECU, in order to change the direction of the current that flows into the Generator. The inverter also regulates the duration of the switching time through PWM (Pulse Width Modulation) control, in order to control the voltage applied to the Generator.
DTC DETECTION TROUBLE CONDITION
| DTC No. | INF Code | DTC Detection Condition | Trouble Area |
|---|---|---|---|
| P0A78 | 272 | Abnormality in the motor PWM circuit | w/ converter inverter assembly (MG ECU) |