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Home >> Scion >> 2014 >> iQ EV >> Repair and Diagnosis >> Hybrid/Electric Powertrain >> Testing and Diagnosis >> Hybrid Control System (Diagnostic Codes P0516-769 - P0A90-251) (Electric) >> Hybrid Control System >> DTC P0A78-506: Drive Motor "A" Inverter Performance; DTC P0A78-808: Drive Motor "A" Inverter Performance >> Description

DTC P0A78-506: Drive Motor "A" Inverter Performance; DTC P0A78-808: Drive Motor "A" Inverter Performance: Description

Refer to the description for DTC P0A78-266. Refer to DESCRIPTION .

If the motor inverter overheats, has a circuit malfunction, or has an 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.

DTC No. INF Code DTC Detection Condition Trouble Area
P0A78 506 Motor inverter fail signal detection (overcurrent due to EV transaxle assembly malfunction)
  • Wire harness or connector
  • Inverter with converter assembly
  • EV transaxle with motor assembly
P0A78 808 Abnormal motor current value detection (EV transaxle with motor assembly malfunction)