DTC    P3232-749    Open or Short to B+ in Blocking of HV Gate Connection

for Preparation Click here


DESCRIPTION

The HV control ECU sends a shutdown signal to the w/ converter inverter assembly (MG ECU) to shut down the power supply to the Motor.

DTC No.
INF Code
DTC Detection Condition
Trouble Area
P3232
749
GND short in emergency shutdown signal circuit while gate is shut down
  1. Wire harness or connector
  2. HV control ECU
  3. w/ converter inverter assembly (MG ECU)

WIRING DIAGRAM


A113959E02


INSPECTION PROCEDURE

CAUTION:
  1. Turn the ignition switch off before inspecting the high-voltage system. Before inspecting the high-voltage system, take safety precautions to prevent electrical shocks, such as wearing insulated gloves and removing the service plug grip. After removing the service plug grip, put it in your pocket to prevent other technicians from reconnecting it while you are working on the high-voltage system.
  2. After disconnecting the service plug grip, wait for at least 5 minutes before touching any of the high-voltage connectors or terminals.

HINT:
  1. At least 5 minutes is required to discharge the high-voltage capacitor inside the w/ converter inverter assembly.
  2. In case of reproducing the problem, turning the ignition switch on and off repeatedly makes it easier to reproduce the problem. Do not repeat the operations of putting the vehicle into the READY-on state and turning the ignition switch off as these will activate a system main relay overheat protection.

1.CHECK HARNESS AND CONNECTOR (HV CONTROL ECU - MG ECU)

CAUTION:
Be sure to wear insulated gloves.



    A108501E09

  1. Turn the ignition switch off and remove the service plug grip. (Click here)

  1. Disconnect the H31 connector from the HV control ECU.

    NOTICE:
    Do not put the vehicle into the READY-on state with the service plug grip removed as this may cause a malfunction.

  1. Remove the inverter cover. (Click here)

    NOTICE:
    1. Wrap the interlock round terminal for the inverter cover with vinyl tape to prevent it from shorting to ground.
    2. Be sure to prevent water in the reservoir tank from entering the inverter.
    3. Removing the inverter cover causes the MG ECU board to be exposed. Therefore, temporarily install the inverter cover for each area to be inspected.

  1. Disconnect the I25 connector from the MG ECU.

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

    Standard Resistance:
    Tester Connection
    		Specified Condition
    HSND (H31-21) or HSND (I25-26) - Body ground
    		10 kΩ or higher



NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
OK


2.CHECK W/ CONVERTER INVERTER ASSEMBLY

CAUTION:
Be sure to wear insulated gloves.



    A108017E03

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

    Standard Resistance:
    Tester Connection
    		Specified Condition
    HSND (I25-26) - Body ground
    		2.65 to 3.55 kΩ



NG
REPLACE W/ CONVERTER INVERTER ASSEMBLY
OK

REPLACE HYBRID VEHICLE CONTROL ECU