DTC P0A78-121: Drive Motor "A" Inverter Performance [11/2015 - 11/2016]: Description

For a description of the inverter.

If a malfunction occurs in the motor inverter or generator inverter, the MG ECU detects it and transmits this information to the power management control ECU.

HINT:

The term "drive motor A" indicates the motor (MG2).

DTC No.	Detection Item	DTC Detection Condition	Trouble Area	MIL	Warning Indicate
P0A78-121	Drive Motor "A" Inverter Performance	Motor inverter overvoltage signal detected (overvoltage due to system malfunction): Overvoltage is detected after boosting. A malfunction is detected in any of the motor components (motor inverter, motor, MG ECU, etc.). (1 trip detection logic)	Hybrid battery junction block assembly Inverter with converter assembly Service plug grip (EV battery fuse) Hybrid vehicle transaxle assembly Rear traction motor with transaxle assembly No. 6 floor wire Extension wire assembly Power management control ECU PCU fuse Wire harness or connector	Comes on	Master Warning Light: Comes on

RELATED DATA LIST

DTC No.	Data List
P0A78-121	VH-Voltage after Boosting