HYBRID CONTROL SYSTEM, Diagnostic DTC:P3232-749
| DTC Code | DTC Name |
|---|---|
| P3232-749 | Short to GND in Blocking of HV Gate Connection |
DESCRIPTION
The power management control ECU sends a shutdown signal to the inverter with converter assembly (MG ECU) to shut down the power supply to MG2 and MG1.
| DTC No. | INF Code | DTC Detection Condition | Trouble Area |
|---|---|---|---|
| P3232 | 749 | Short to GND in the emergency shutdown signal line while the IGBTs are being shut down. |
|
WIRING DIAGRAM
INSPECTION PROCEDURE
CAUTION:
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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.
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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.
Tech Tips
When attempting to reproduce the problem, turning the power switch on (IG) and off repeatedly makes it easier to reproduce the problem. Do not repeatedly turn the power switch on (READY) and off as this will activate a system main relay overheat protection.
PROCEDURE
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CHECK HARNESS AND CONNECTOR (INVERTER WITH CONVERTER ASSEMBLY - POWER MANAGEMENT CONTROL ECU)
CAUTION:
Be sure to wear insulated gloves.
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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.
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Disconnect the A58 inverter with converter assembly connector.
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Disconnect the A21 power management control ECU connector.
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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 resistance according to the value(s) in the table below.
Standard Resistance Tester Connection Condition Specified Condition A21-31 (HSDN) or A58-31 (HSDN) - Body ground and other terminals Power switch off 10 kΩ or higher -
Reconnect the A21 power management control ECU connector.
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Reconnect the A58 inverter with converter assembly connector.
NG 
REPAIR OR REPLACE HARNESS OR CONNECTOR
OK 
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CHECK INVERTER WITH CONVERTER ASSEMBLY
CAUTION:
Be sure to wear insulated gloves.
-
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.
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Disconnect the A58 inverter with converter assembly connector.
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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) - A58-28 (GND1) Power switch off 2.65 to 3.55 kΩ -
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
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