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DTC    P0A7A-517    Generator Inverter Performance

DTC    P0A7A-809    Generator Inverter Performance

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DESCRIPTION

For a description of the inverter, (Click here).
If the generator inverter overheats, has a circuit malfunction, or has an internal short, the inverter transmits this information to the MG ECU via the generator inverter fail signal line.
If an abnormal amount of current flows through the generator inverter, the MG ECU detects it and sends a signal to inform the power management control ECU (HV CPU) of the malfunction.

DTC No.
INF Code
DTC Detection Condition
Trouble Area
P0A7A
517
Generator inverter fail signal detection (overcurrent due to MG ECU malfunction)
Inverter with converter assembly
P0A7A
809
Abnormal generator current value detection (MG ECU malfunction)

INSPECTION PROCEDURE

CAUTION:
  1. Before inspecting the high-voltage system or disconnecting the low voltage connector of the inverter with converter assembly, take safety precautions such as wearing insulated gloves and removing the service plug grip to prevent electrical shocks. After removing the service plug grip, put it in your pocket to prevent other technicians from accidentally reconnecting it while you are working on the high-voltage system.
  2. After disconnecting the service plug grip, wait for at least 10 minutes before touching any of the high-voltage connectors or terminals. After waiting for 10 minutes, check the voltage at the terminals in the inspection point in the inverter with converter assembly. The voltage should be 0 V before beginning work.

HINT:
Waiting for at least 10 minutes is required to discharge the high-voltage capacitor inside the inverter with converter assembly.

1.CHECK DTC OUTPUT (HV)

  1. Connect the intelligent tester to the DLC3.

  1. Turn the power switch on (IG).

  1. Enter the following menus: Powertrain / Hybrid Control / Trouble Codes.

  1. Check if DTCs are output.

    Result:
    Result
    		Proceed to
    P0A7A-203 is not output
    		A
    P0A7A-203 is also output
    		B

    NOTICE:
    1. If P0A7A-203 is output, troubleshoot it first. After completing the troubleshooting for P0A7A-203, return to perform troubleshooting for this DTC.
    2. Parts repaired or replaced during troubleshooting for P0A7A-203 do not need to be re-inspected in this diagnosis procedure.

  1. Turn the power switch off.



B
GO TO DTC CHART (Click here)
A


2.CHECK DTC OUTPUT (HV)

  1. Connect the intelligent tester to the DLC3.

  1. Turn the power switch on (IG).

  1. Enter the following menus: Powertrain / Hybrid Control / Trouble Codes.

  1. Check if DTCs are output.

    HINT:
    1. If P0A7A-203 was not output in step 1 of this diagnosis procedure, check Table 1 below.
    2. If P0A7A-203 was output in step 1 of this diagnosis procedure, repair that DTC first, then check Table 2 below.

    Result:
    Result
    		Proceed to
    P0A7A-517 or 809 only is output.
    		A
    Any of the following DTCs are also output.
    		B


    Table 1 
    DTC No.
    		Relevant Diagnosis
    P0A1A (all INF codes)*1
    		Generator Control Module
    P0A1B (all INF codes)*1
    		Drive Motor "A" Control Module
    P0A1D (all INF codes)*1
    		Hybrid Powertrain Control Module
    P0A3F-243
    		Drive Motor "A" Position Sensor Circuit
    P0A40-500
    		Drive Motor "A" Position Sensor Circuit Range/Performance
    P0A41-245
    		Drive Motor "A" Position Sensor Circuit Low
    P0A4B-253
    		Generator Position Sensor Circuit
    P0A4C-513
    		Generator Position Sensor Circuit Range/Performance
    P0A4D-255
    		Generator Position Sensor Circuit Low
    P0A60 (all INF codes)*1
    		Drive Motor "A" Phase V Current
    P0A63 (all INF codes)*1
    		Drive Motor "A" Phase W Current
    P0A72 (all INF codes)*1
    		Generator Phase V Current
    P0A75 (all INF codes)*1
    		Generator Phase W Current
    P0A78-266, 267, 586
    		Drive Motor "A" Inverter Performance
    P0A94-585, 587, 589, 590
    		DC/DC Converter Performance
    P0C76-523
    		Hybrid Battery System Discharge Time Too Long

    Table 2 
    DTC No.
    		Relevant Diagnosis
    P0A1A (all INF codes)*1
    		Generator Control Module
    P0A1B (all INF codes)*1
    		Drive Motor "A" Control Module
    P0A1D (all INF codes)*1
    		Hybrid Powertrain Control Module
    P0A3F-243
    		Drive Motor "A" Position Sensor Circuit
    P0A40-500
    		Drive Motor "A" Position Sensor Circuit Range/Performance
    P0A41-245
    		Drive Motor "A" Position Sensor Circuit Low
    P0A4B-253
    		Generator Position Sensor Circuit
    P0A4C-513
    		Generator Position Sensor Circuit Range/Performance
    P0A4D-255
    		Generator Position Sensor Circuit Low
    P0A60 (all INF codes)*1
    		Drive Motor "A" Phase V Current
    P0A63 (all INF codes)*1
    		Drive Motor "A" Phase W Current
    P0A72-333
    		Generator Phase V Current
    P0A75-341
    		Generator Phase W Current
    P0A78-266, 267, 586
    		Drive Motor "A" Inverter Performance
    P0A94-585, 587, 589, 590
    		DC/DC Converter Performance
    P0C76-523
    		Hybrid Battery System Discharge Time Too Long

    HINT:
    1. *1: If any INF codes are output for this DTC, refer to the corresponding diagnostic procedure.
    2. P0A7A-517 or P0A7A-809 may be set due to a malfunction which also causes DTCs in the preceding table to be set. In this case, first troubleshoot the output DTCs in the preceding table. Then, perform a test to attempt to reproduce the problems, and check that no DTCs are output.

  1. Turn the power switch off.



B
GO TO DTC CHART (Click here)
A


3.CHECK CONNECTOR CONNECTION CONDITION (INVERTER WITH CONVERTER ASSEMBLY CONNECTOR)
A214648

CAUTION:
Be sure to wear insulated gloves.

  1. Check that the service plug grip is not installed.

    NOTICE:
    After removing the service plug grip, do not turn the power switch on (READY), unless instructed by the repair manual because this may cause a malfunction.

NOTICE:
Before disconnecting the connector, confirm that it is properly connected by checking that the locking claws are engaged and that the connector does not pull out.

  1. Check the connection of the low voltage connector of the inverter with converter assembly.

    OK:
    The connector is connected securely and there are no contact problems.

    HINT:
    When connecting the connector, insert it with the locking lever in the raised position. Rotate the lever downward and make sure that the connector is pulled into its socket. When the locking lever is in its fully closed position, a click will be heard as its locking claws engage. After the click is heard, pull up on the connector to confirm that it is properly connected.



NG
CONNECT SECURELY
OK

REPLACE INVERTER WITH CONVERTER ASSEMBLY (Click here)