HYBRID CONTROL SYSTEM, Diagnostic DTC:P3233-750

DTC Code DTC Name
P3233-750 Open or Short to B+ in Blocking of HV Gate Connection

DESCRIPTION

Refer to the description for DTC P3232-749 Click here.

DTC No. INF Code DTC Detection Condition Trouble Area
P3233 750 Open or short to +B in the emergency shutdown signal line when the IGBTs are operating.

  • Wire harness or connector

  • Power management control ECU

  • Inverter with converter assembly

WIRING DIAGRAM

Refer to the wiring diagram for DTC P3232-749 Click here.

INSPECTION PROCEDURE

CAUTION:


  • Before inspecting the high-voltage system or disconnecting the low voltage connector of the inverter with converter assembly or electric vehicle charger assembly, turn the power switch off. Also, 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 and electric vehicle charger 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 HARNESS AND CONNECTOR (INVERTER WITH CONVERTER ASSEMBLY - POWER MANAGEMENT CONTROL ECU)

    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. Disconnect the A58 inverter with converter assembly connector.

    3. Disconnect the A21 power management control ECU connector.

    4. Connect the cable to the negative (-) auxiliary battery terminal.

    5. Turn the power switch on (IG).

    6. A00411AE26
      Text in Illustration
      *a

      Front view of wire harness connector

      (to Inverter with Converter Assembly)
      *b

      Rear view of wire harness connector

      (to Power Management Control ECU)

      Measure the voltage according to the value(s) in the table below.

      Standard Voltage
      Tester Connection Condition Specified Condition
      A21-31 (HSDN) - Body ground Power switch on (IG) Below 1 V

      Note

      Turning the power switch on (IG) with the connector disconnected causes other DTCs to be stored. Clear the DTCs after performing this inspection.

    7. Disconnect the cable from the negative (-) auxiliary battery terminal.

    8. Turn the power switch off.

    9. Measure the resistance according to the value(s) in the table below.

      Standard Resistance
      Tester Connection Condition Specified Condition
      A21-31 (HSDN) - A58-31 (HSDN) Power switch off Below 1 Ω

    10. Reconnect the A58 inverter with converter assembly connector.

    11. Reconnect the A21 power management control ECU connector.


    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  2. CHECK INVERTER WITH CONVERTER ASSEMBLY

    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. Disconnect the A58 inverter with converter assembly connector.

    3. A0043K1E54
      Text in Illustration
      *a

      Component without harness connected

      (Inverter with Converter Assembly)

      Measure the resistance according to the value(s) in the table below.

      Standard Resistance
      Tester Connection Condition Specified Condition
      A58-31 (HSDN) - A58-10 (+B) Power switch off 80 Ω or higher
      A58-31 (HSDN) - A58-9 (+B2) Power switch off 80 Ω or higher
      A58-31 (HSDN) - A58-28 (GND1) Power switch off 2.65 to 3.55 kΩ

    4. Reconnect the A58 inverter with converter assembly connector.


    NG

    REFER TO REPLACE INVERTER WITH CONVERTER ASSEMBLY PARTS Click here

    OK

    REPLACE POWER MANAGEMENT CONTROL ECU Click here