DTC P3233-750: Short to B+ in Blocking of HV Gate Connection: Procedure

1. Turn the power switch off.
2. Remove the service plug grip. Refer to PRECAUTION .
   NOTE:

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

3. Disconnect connector A76 from the hybrid vehicle control ECU.
4. Disconnect the low voltage connector from the inverter with converter assembly.
   Fig 1: Checking Harness And Connector (Hybrid Vehicle Control ECU-Inverter With Converter Assembly)

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
5. Turn the power switch on (IG).
6. Measure the voltage according to the value(s) in the table below.
   Fig 2: Checking Harness And Connector (Hybrid Vehicle Control ECU-Inverter With Converter Assembly)

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   Standard voltage

   Tester Connection	Switch Condition	Specified Condition
   A76-25 (HSDN) - Body ground	Power switch on (IG)	Below 1 V

   NOTE:

   Turning the power switch on (IG) with the connector of the hybrid vehicle control ECU or the low voltage connector of the inverter with converter assembly disconnected causes other DTCs to be stored. Clear the DTCs after performing this inspection.

7. Turn the power switch off.
8. Measure the resistance according to the value(s) in the table below.

   Standard resistance

   Tester Connection	Switch Condition	Specified Condition
   A76-25 (HSDN) - A77-25 (HSDN)	Power switch off	Below 1 Ω

NG → REPAIR OR REPLACE HARNESS OR CONNECTOR 

OK: Go to next step 

1. Check that the service plug grip is not installed.
2. Measure the resistance according to the value(s) in the table below.
   Fig 3: A77 Connector

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   Standard resistance

   Tester Connection	Switch Condition	Specified Condition
   A77-25 (HSDN) - A77-10 (+B)	Power switch off	3.5 kΩ or higher
   A77-25 (HSDN) - A77-11 (+B2)	Power switch off	3.5 kΩ or higher
   A77-25 (HSDN) - A77-30 (GND1)	Power switch off	2.65 to 3.55 kΩ

NG → See step   4 

OK → See step   3