DTC P0A78-503: Drive Motor "A" Inverter Performance [02/2014 - 11/2016]: Description
For a description of the inverter.
Refer to DESCRIPTION
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 |
|---|---|---|---|---|---|
| P0A78-503 | Drive Motor "A" Inverter Performance | Motor inverter overvoltage signal detected (overvoltage due to MG ECU malfunction): Overvoltage is detected after boosting.* (1 trip detection logic) |
|
Comes on | Master Warning Light: Comes on |
*: The MG ECU, which is built into the inverter with converter assembly, is suspected to be the main cause of the malfunction.
RELATED DATA LIST
| DTC No. | Data List |
|---|---|
| P0A78-503 | VH-Voltage after Boosting |