DTC P0A78-505: Drive Motor "A" Inverter Performance; DTC P0A78-806: Drive Motor "A" Inverter Performance [02/2014 - 11/2016]: Description
For a description of the inverter.
Refer to DESCRIPTION
If the motor inverter overheats, has a circuit malfunction or internal short, the inverter transmits this information to the MG ECU via the motor inverter fail signal line. If an abnormal amount of current flows through the motor inverter, the MG ECU detects it and sends a signal to inform the power management control ECU of the malfunction.
HINT:
The term "drive motor A" indicates the motor (MG2).
| DTC No. | Detection Item | DTC Detection Condition | Trouble Area | MIL | Warning Indicate |
|---|---|---|---|---|---|
| P0A78-505 | Drive Motor "A" Inverter Performance | Motor inverter fail signal detected (overcurrent due to MG ECU malfunction)* (1 trip detection logic) |
Inverter with converter assembly | Comes on | Master Warning Light: Comes on |
| P0A78-806 | Drive Motor "A" Inverter Performance | Abnormal motor (MG2) current value detected (MG ECU malfunction)* (1 trip detection logic) |
Inverter with converter assembly | 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.