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DTC P0A78-120: 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, generator inverter or rear motor inverter, the MG ECU detects it and transmits this information to the power management control ECU.

DTC No. Detection Item DTC Detection Condition Trouble Area MIL Warning Indicate
P0A78-120 Drive Motor "A" Inverter Performance Rear motor inverter overvoltage signal detected (overvoltage (rear transaxle malfunction)):
Overvoltage is detected after boosting.*
(1 trip detection logic)
  • Inverter with converter assembly
  • Rear traction motor with transaxle assembly
  • Wire harness or connector
Comes on Master Warning Light:
Comes on

*: The rear traction motor with transaxle assembly is suspected to be the main cause of the malfunction.

RELATED DATA LIST

DTC No. Data List
P0A78-120 VH-Voltage after Boosting