HYBRID CONTROL SYSTEM, Diagnostic DTC:P0A72-326, P0A72-328, P0A72-333, P0A72-515, P0A75-334, P0A75-336, P0A75-341, P0A75-516

DTC Code DTC Name
P0A72-326 Generator Phase V Current
P0A72-328 Generator Phase V Current
P0A72-333 Generator Phase V Current
P0A72-515 Generator Phase V Current
P0A75-334 Generator Phase W Current
P0A75-336 Generator Phase W Current
P0A75-341 Generator Phase W Current
P0A75-516 Generator Phase W Current

DESCRIPTION

The MG ECU located in the inverter with converter assembly monitors the generator inverter current sensors. DTCs P0A72 and P0A75 indicate malfunctions in the current sensors, and do not indicate malfunctions in the high-voltage system.

DTC No. Detection Item DTC Detection Condition Trouble Area MIL Warning Indicate
P0A72-326 Generator Phase V Current Malfunction in generator inverter current sensor (phase V sub sensor) Inverter with converter assembly Comes on

Master Warning Light:

Comes on
P0A72-328 Generator Phase V Current Malfunction in generator inverter current sensor (phase V main sensor) Inverter with converter assembly Comes on

Master Warning Light:

Comes on
P0A72-333 Generator Phase V Current Malfunction in generator inverter current sensor (performance problem or open phase V) Inverter with converter assembly Comes on

Master Warning Light:

Comes on
P0A72-515 Generator Phase V Current Malfunction in generator inverter current sensor (phase V main and sub sensors offset) Inverter with converter assembly Comes on

Master Warning Light:

Comes on
P0A75-334 Generator Phase W Current Malfunction in generator inverter current sensor (phase W sub sensor) Inverter with converter assembly Comes on

Master Warning Light:

Comes on
P0A75-336 Generator Phase W Current Malfunction in generator inverter current sensor (phase W main sensor) Inverter with converter assembly Comes on

Master Warning Light:

Comes on
P0A75-341 Generator Phase W Current Malfunction in generator inverter current sensor (performance problem or open phase W) Inverter with converter assembly Comes on

Master Warning Light:

Comes on
P0A75-516 Generator Phase W Current Malfunction in generator inverter current sensor (phase W main and sub sensors offset) Inverter with converter assembly Comes on

Master Warning Light:

Comes on

CAUTION / NOTICE / HINT

CAUTION:


  • 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.

  • After removing 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.

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    Tech Tips

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

Note

After turning the power switch off, waiting time may be required before disconnecting the cable from the negative (-) auxiliary battery terminal. Therefore, make sure to read the disconnecting the cable from the negative (-) auxiliary battery terminal notices before proceeding with work.

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PROCEDURE


  1. CHECK DTC OUTPUT (HYBRID CONTROL)


    1. Connect the GTS to the DLC3.

    2. Turn the power switch on (IG).

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

    4. Check for DTCs.


      Powertrain > Hybrid Control > Trouble Codes
      Result
      Result Proceed to
      P0A72 or P0A75 only is output. A
      P0A7A-203 is output. B

    5. Turn the power switch off.


    B

    GO TO DTC CHART (P0A7A-203) Click here

    A

  2. CHECK CONNECTOR CONNECTION CONDITION (INVERTER WITH CONVERTER ASSEMBLY CONNECTOR)

    Result
    Result
    OK
    NG

    CAUTION:

    Be sure to wear insulated gloves.


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

      Note

      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.

    2. A01SFRS

      Check the connector connections and contact pressure of the low voltage connectors of the inverter with converter assembly.

      Click here

      Note

      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.

      OK
      The connectors are connected securely and there are no contact pressure problems.

      Tech Tips

      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.

      Result
      Proceed to
      OK
      NG

    OK

    REFER TO REPLACE INVERTER WITH CONVERTER ASSEMBLY PARTS Click here

    NG

    CONNECT SECURELY