HYBRID CONTROL SYSTEM, Diagnostic DTC:P0A09-265

DTC Code	DTC Name
P0A09-265	DC / DC Converter Status Circuit Low Input

DESCRIPTION

Refer to the description for DTC P0A08-264 Click here.

DTC No.	INF Code	DTC Detection Condition	Trouble Area
P0A09	265	Open or GND short in NODD signal circuit of DC/DC converter	Wire harness or connector Inverter with converter assembly Power management control ECU

WIRING DIAGRAM

Refer to the wiring diagram for DTC P0A08-264 Click here.

CAUTION / NOTICE / HINT

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.

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

CHECK CONNECTOR CONNECTION CONDITION (POWER MANAGEMENT CONTROL ECU CONNECTOR)
1. Check the connections of the power management control ECU connectors.
  
  Text in Illustration
  
  *A for LHD *B for RHD
  
  OK
  
  The connectors are connected securely and there are no contact problems.
NG
CONNECT SECURELY

OK
CHECK CONNECTOR CONNECTION CONDITION (INVERTER WITH CONVERTER ASSEMBLY CONNECTOR)
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.
  
  Note
  
  Before disconnecting the connector, confirm that it is properly connected by checking that the locking claws are engaged and that the connector does not pull out.
2. Check the connection of the low voltage connector of the inverter with converter assembly.
  
  OK
  
  The connector is connected securely and there are no contact problems.
  
  Tech Tips
  
  When connecting the connector, insert it with the locking lever in the raised position. Rotate the lever downward and make sure that the connector is pulled into its socket. When the locking lever is in its fully closed position, a click will be heard as its locking claws engage. After the click is heard, pull up on the connector to confirm that it is properly connected.
NG
CONNECT SECURELY

OK
CLEAR DTC
1. Connect the intelligent tester to the DLC3.
2. Turn the power switch on (IG).
3. Enter the following menus: Powertrain / Hybrid Control / DTC.
4. Clear DTCs and freeze frame data.
5. Turn the power switch off.
NEXT

Text in Illustration
*A	for LHD	*B	for RHD

OK
The connectors are connected securely and there are no contact problems.

OK
The connector is connected securely and there are no contact problems.

CHECK DTC OUTPUT (HYBRID CONTROL)

Connect the intelligent tester to the DLC3.
Depress the brake pedal and turn the power switch on (READY).

Tech Tips

Perform this step to check if the power switch can be turned on (READY).
Enter the following menus: Powertrain / Hybrid Control / DTC.

Check if DTCs are output.

Result

Result	Proceed to
Power switch cannot be turned on (READY) and P0A09-265 is output.	A
Power switch can be turned on (READY) and P0A09-265 is not output.	B

Turn the power switch off.

Check for intermittent problems Click here.

CHECK POWER MANAGEMENT CONTROL ECU

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.
Disconnect connector A62 from the inverter with converter assembly.

Text in Illustration
*a	Front view of wire harness connector (to Inverter with Converter Assembly)

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

Standard Resistance

Tester Connection	Switch Condition	Specified Condition
A62-12 (NODD) - Body ground	Power switch off	110 to 150 kΩ

Connect the inverter with converter assembly connector.

REFER TO REPLACE INVERTER WITH CONVERTER ASSEMBLY PARTS Click here

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

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.
Disconnect connector A62 from the inverter with converter assembly.
Disconnect connector A19 from the power management control ECU.

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	Switch Condition	Specified Condition
A62-12 (NODD) - A19-21 (NODD)	Power switch off	Below 1 Ω
A62-12 (NODD) or A19-21 (NODD) - Body ground and other terminals	Power switch off	10 kΩ or higher

Connect the inverter with converter assembly connector.
Connect the power management control ECU connector.

REPLACE POWER MANAGEMENT CONTROL ECU Click here

REPAIR OR REPLACE HARNESS OR CONNECTOR