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. P0A72 and P0A75 indicate malfunctions in the current sensors, and they do not indicate malfunctions in the high-voltage system.

DTC No. INF Code DTC Detection Condition Trouble Area
P0A72 326 Malfunction in generator inverter current sensor (phase V sub sensor) Inverter with converter assembly
328 Malfunction in generator inverter current sensor (phase V main sensor)
333 Malfunction in generator inverter current sensor (performance problem or open phase V)
515 Malfunction in generator inverter current sensor (phase V main and sub sensors offset)
P0A75 334 Malfunction in generator inverter current sensor (phase W sub sensor)
336 Malfunction in generator inverter current sensor (phase W main sensor)
341 Malfunction in generator inverter current sensor (performance problem or open phase W)
516 Malfunction in generator inverter current sensor (phase W main and sub sensors offset)

MONITOR DESCRIPTION

The power management control ECU monitors the generator inverter current sensor. If the power management control ECU detects a fault, it will illuminate the MIL and set a DTC.

MONITOR STRATEGY

Related DTCs

P0A72 (INF 326/328/333/515): Generator Phase V Current

P0A75 (INF 334/336/341/516): Generator Phase W Current

Required sensors / components Generator inverter current sensor, Generator resolver
Frequency of operation Continuous
Duration TMC's intellectual property
MIL operation 1 driving cycle
Sequence of operation None

TYPICAL ENABLING CONDITIONS

The monitor will run whenever the following DTCs are not present TMC's intellectual property
Other conditions belong to TMC's intellectual property -

TYPICAL MALFUNCTION THRESHOLDS

TMC's intellectual property -

COMPONENT OPERATING RANGE

Power management control ECU

DTC P0A72 (INF 326/328/333/515) is not detected

DTC P0A75 (INF 334/336/341/516) is not detected

CONFIRMATION DRIVING PATTERN

A01HUK2E04

  1. Connect the Techstream to the DLC3.

  2. Turn the power switch on (IG) and turn the Techstream on.

  3. Clear the DTCs (even if no DTCs are stored, perform the clear DTC procedure).

  4. Turn the power switch off.

  5. Turn the power switch on (READY) and turn the Techstream on.

  6. With the vehicle stopped and shift lever in P, move the shift lever to N, wait for 10 seconds and then move the shift lever to D. [A]

    Note

    Do not leave the vehicle for an extended time with the shift lever in N.

  7. Slowly accelerate from a stop (0 km/h (0 mph)) to 40 km/h (25 mph) several times while using different acceleration patterns. [B]

    Tech Tips

    The vehicle should be driven with an accelerator opening of approximately 50%.

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

  9. Check that permanent DTCs are cleared.

  10. If the permanent DTCs are not cleared, perform the universal trip, and then check for permanent DTCs again.

    Tech Tips


    • If a permanent DTC is output, the system is malfunctioning.

    • If no permanent DTC is output, the system is normal.

INSPECTION PROCEDURE

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 Click here.

    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 Click here.

PROCEDURE


  1. CHECK DTC OUTPUT (HYBRID CONTROL)


    1. Connect the Techstream to the DLC3.

    2. Turn the power switch on (IG).

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

    4. Check if DTCs are output.

      Result
      Result Proceed to
      P0A72 or P0A75 only is output. A
      P0A7A-203 is output. B
    5. Turn the power switch off.


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

    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. 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.

      A01HVLPE01
      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.


    NG
    OK