HYBRID CONTROL SYSTEM, Diagnostic DTC:P0A10-263

DTC Code DTC Name
P0A10-263 DC / DC Converter Status Circuit High Input

DESCRIPTION

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

DTC No. INF Code DTC Detection Condition Trouble Area
P0A10 263 Short to +B in the hybrid vehicle converter (DC/DC converter) NODD signal line

  • 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.

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 disconnecting 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.

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 POWER MANAGEMENT CONTROL ECU (NODD)

    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 the A79 connector from the inverter with converter assembly.

    3. Turn the power switch on (IG).

    4. A01NFV3E09
      Text in Illustration
      *1

      Front view of wire harness connector

      (to Inverter with Converter Assembly)

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

      Standard Voltage
      Tester Connection Switch Condition Specified Condition
      A79-24 (NODD) - Body ground Power switch on (IG) Below 1 V

      Note

      Turning the power switch on (IG) with the inverter with converter assembly connector disconnected causes other DTCs to be stored. Clear the DTCs after performing this inspection.

    5. Turn the power switch off.

    6. Connect the inverter with converter assembly connector.


    NG

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

    OK

    REPLACE INVERTER WITH CONVERTER ASSEMBLY Click here

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


    1. Disconnect the A79 connector from the inverter with converter assembly.

    2. Disconnect the A80 connector from the power management control ECU.

    3. Turn the power switch on (IG).

    4. A01NEUQE01
      Text in Illustration
      *1

      Front view of wire harness connector

      (to Inverter with Converter Assembly)
      *2

      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
      A79-24 (NODD) or A80-21 (NODD) - Body ground Power switch on (IG) Below 1 V
      Result
      Result Proceed to
      OK (for LHD) A
      OK (for RHD) B
      NG C

      Note

      Turning the power switch on (IG) with the inverter with converter assembly connector and the power management control ECU connectors disconnected causes other DTCs to be stored. Clear the DTCs after performing this inspection.

    5. Turn the power switch off.

    6. Connect the inverter with converter assembly connector.

    7. Connect the power management control ECU connector.


    B

    REPLACE POWER MANAGEMENT CONTROL ECU (for RHD) Click here

    C

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    A

    REPLACE POWER MANAGEMENT CONTROL ECU (for LHD) Click here