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, 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.

PROCEDURE


  1. CHECK HARNESS AND CONNECTOR (POWER MANAGEMENT CONTROL ECU - INVERTER WITH CONVERTER)

    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 connector A105 from the inverter with converter assembly.

    3. Disconnect connector A99 from the power management control ECU.

    4. Turn the power switch on (IG).

    5. A003S2AE06
      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 Switch Condition Specified Condition
      A99-31 (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.

    6. Turn the power switch off.

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

      Standard Resistance
      Tester Connection Switch Condition Specified Condition
      A99-31 (HSDN) - A105-31 (HSDN) Power switch off Below 1 Ω

    8. Connect the inverter with converter assembly connector.

    9. Connect the 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 connector A105 from the inverter with converter assembly.

    3. A003TGGE21
      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 Switch Condition Specified Condition
      A105-31 (HSDN) - A105-10 (+B) Power switch off 10 kΩ or higher
      A105-31 (HSDN) - A105-9 (+B2) Power switch off 10 kΩ or higher
      A105-31 (HSDN) - A105-28 (GND1) Power switch off 2.65 to 3.55 kΩ

    4. Connect the inverter with converter assembly connector.


    NG

    REFER TO REPLACE INVERTER WITH CONVERTER ASSEMBLY PARTS Click here

    OK

    REPLACE POWER MANAGEMENT CONTROL ECU Click here