DTC    P0A78-586    Drive Motor "A" Inverter Performance

for Preparation Click here


DESCRIPTION

Refer to the description for DTC P0A78-266 (Click here).
The signal line from the inverter voltage (VH) sensor is connected to the MG ECU inside the inverter with converter assembly. If P0A78-586 is output, replace the inverter with converter assembly.

DTC No.
INF Code
DTC Detection Condition
Trouble Area
P0A78
586
Inverter voltage (VH) sensor performance problem
Inverter with converter assembly

INSPECTION PROCEDURE

1.CHECK DTC OUTPUT (HYBRID CONTROL)

  1. Connect the intelligent tester to the DLC3.

  1. Turn the power switch on (IG).

  1. Enter the following menus: Powertrain / Hybrid Control / DTC.

  1. Check if DTCs are output.

    Result:
    Result
    		Proceed to
    P0A78-586 only is output.
    		A
    DTCs shown in Table 1 are output simultaneously.
    		B
    DTCs shown in Table 2 are output simultaneously.
    		C


    Table 1 
    DTC No.
    		Relevant Diagnosis
    P0A1A-151, 155, 156, 658, 659
    		Generator Control Module
    P0A1B-164, 193, 512, 661, 786
    		Drive Motor "A" Control Module
    P0A1D-148
    		Hybrid Powertrain Control Module
    P0A78-266, 267
    		Drive Motor "A" Inverter Performance
    P0A94-589, 590
    		DC/DC Converter Performance
    P2511-149
    		ECM/PCM Power Relay Sensor Circuit Intermittent
    P3004-132
    		Power Cable Malfunction
    P324E-788
    		MG-ECU Power Relay Intermittent Circuit
    U0110 (all INF codes)*1
    		Lost Communication with Drive Motor Control Module

    Table 2 
    DTC No.
    		Relevant Diagnosis
    P0AFC-123
    		Hybrid Battery Pack Sensor Module
    P0B3D-123
    		Hybrid Battery Voltage Sensor "A" Circuit Low
    P0B42-123
    		Hybrid Battery Voltage Sensor "B" Circuit Low
    P0B47-123
    		Hybrid Battery Voltage Sensor "C" Circuit Low
    P0B4C-123
    		Hybrid Battery Voltage Sensor "D" Circuit Low
    P0B51-123
    		Hybrid Battery Voltage Sensor "E" Circuit Low
    P0B56-123
    		Hybrid Battery Voltage Sensor "F" Circuit Low
    P0B5B-123
    		Hybrid Battery Voltage Sensor "G" Circuit Low
    P0B60-123
    		Hybrid Battery Voltage Sensor "H" Circuit Low
    P0B65-123
    		Hybrid Battery Voltage Sensor "I" Circuit Low
    P0B6A-123
    		Hybrid Battery Voltage Sensor "J" Circuit Low
    P0B6F-123
    		Hybrid Battery Voltage Sensor "K" Circuit Low
    P0B74-123
    		Hybrid Battery Voltage Sensor "L" Circuit Low
    P0B79-123
    		Hybrid Battery Voltage Sensor "M" Circuit Low
    P0B7E-123
    		Hybrid Battery Voltage Sensor "N" Circuit Low
    P0B83-123
    		Hybrid Battery Voltage Sensor "O" Circuit Low
    P308A-123
    		Hybrid Battery Voltage Sensor All Circuits Low

    HINT:
    1. *1: If any INF codes are output for this DTC, refer to the corresponding diagnostic procedure.
    2. P0A78-586 may be output due to a malfunction which causes the DTCs in the table above to be output. In this case, first troubleshoot the output DTCs in the table above. Then, perform a reproduction test to check that no DTCs are output.

  1. Turn the power switch off.



B
GO TO DTC CHART (HYBRID CONTROL SYSTEM) (Click here)

C
GO TO DTC CHART (HYBRID BATTERY SYSTEM) (Click here)
A

REPLACE INVERTER WITH CONVERTER ASSEMBLY (Click here)