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Home >> Toyota >> 2016 >> Highlander Hybrid Limited >> Repair and Diagnosis >> Hybrid/Electric Powertrain >> Testing and Diagnosis >> Hybrid Control System (2GR-FXE) - Diagnostic Codes (6 Of 7) >> Hybrid Control System >> DTC P0A78-586: Drive Motor "A" Inverter Performance [02/2014 - 11/2016] >> Description

DTC P0A78-586: Drive Motor "A" Inverter Performance [02/2014 - 11/2016]: Description

For a description of the inverter.

Refer to DESCRIPTION 

The signal line from the inverter voltage (VH) sensor is connected to the MG ECU, which is built into the inverter with converter assembly. If P0A78-586 is output, replace the inverter with converter assembly.

HINT: 

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

DTC No. Detection Item DTC Detection Condition Trouble Area MIL Warning Indicate
P0A78-586 Drive Motor "A" Inverter Performance Inverter voltage (VH) sensor performance malfunction:
Difference between "VH-Voltage after Boosting" and "VL-Voltage before Boosting" is large and difference between "VH-Voltage after Boosting" and "Power Resource VB" is large.
(1 trip detection logic)
Inverter with converter assembly Comes on Master Warning Light:
Comes on
RELATED DATA LIST

DTC No. Data List
P0A78-586
  • VL-Voltage before Boosting
  • VH-Voltage after Boosting
  • Power Resource VB
  • Boost Ratio