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Home >> Toyota >> 2015 >> Avalon Hybrid Limited >> Repair and Diagnosis >> Hybrid/Electric Powertrain >> Testing and Diagnosis >> Hybrid Control System - Diagnostic Codes - (Hybrid) (1 Of 8) >> Hybrid Control System >> DTC P0A09-265: DC / DC Converter Status Circuit Low Input [10/2014 - 10/2015] >> Procedure

DTC P0A09-265: DC / DC Converter Status Circuit Low Input [10/2014 - 10/2015]: Procedure

  1. CHECK CONNECTOR CONNECTION CONDITION (POWER MANAGEMENT CONTROL ECU CONNECTOR) 

    See step  3

    NG 

    CONNECT SECURELY 

    OK 

    See step  2

  2. CHECK CONNECTOR CONNECTION CONDITION (INVERTER WITH CONVERTER ASSEMBLY CONNECTOR) 

    See step  4

    NG 

    CONNECT SECURELY 

    OK 

    See step  3

  3. CHECK POWER MANAGEMENT CONTROL ECU (NODD) 
    1. Turn the power switch on (READY).
    2. Measure the voltage according to the value (s) in the table below.
      GTY548995Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Component with harness connected
      (Power Management Control ECU)

      Standard Voltage

      Tester Connection Condition Specified Condition
      A53-21 (NODD) - D104-6 (E1) Power switch on (READY) 5 to 7 V
    3. Turn the power switch off.

    NG 

    See step  7

    OK 

    See step  4

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

    NEXT 

    See step  5

  5. CHECK DTC OUTPUT (HYBRID CONTROL) 
    1. Connect the Techstream to the DLC3.
    2. Turn the power switch on (READY).
    3. Enter the following menus: Powertrain / Hybrid Control / Trouble Codes.
    4. Check for DTCs.

      Result

      Result Proceed to
      DTC P0A09-265 is not output. A
      DTC P0A09-265 is output again. B
    5. Turn the power switch off.

    B 

    REPLACE POWER MANAGEMENT CONTROL ECU 

    (Refer to COMPONENTS [10/2014 - 10/2015] )

    A 

    See step  6

  6. CHECK FOR INTERMITTENT PROBLEMS 

    (Refer to CHECK FOR INTERMITTENT PROBLEMS [10/2014 - ] )

    OK 

    REPLACE POWER MANAGEMENT CONTROL ECU 

    (Refer to COMPONENTS [10/2014 - 10/2015] )

    NG 

    REPAIR OR REPLACE MALFUNCTIONING PARTS, COMPONENT AND AREA 

  7. CHECK HARNESS AND CONNECTOR (RESISTANCE VALUE OF NODD INSIDE POWER MANAGEMENT CONTROL ECU) 

    See step  11

    OK 

    REPLACE INVERTER WITH CONVERTER ASSEMBLY 

    (Refer to COMPONENTS [10/2014 - ] )

    NG 

    See step  8

  8. CHECK HARNESS AND CONNECTOR (INVERTER WITH CONVERTER ASSEMBLY - POWER MANAGEMENT CONTROL ECU) 
    WARNING:

    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 otherwise instructed because this may cause a malfunction.

    2. Disconnect the A49 inverter with converter assembly connector.
    3. Disconnect the A53 power management control ECU connector.
    4. Measure the resistance according to the value (s) in the table below.
      GTY586711Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Front view of wire harness connector
      (to Inverter with Converter Assembly)
      *b Rear view of wire harness connector
      (to Power Management Control ECU)

      Standard Resistance

      Tester Connection Condition Specified Condition
      A49-5 (NODD) - A53-21 (NODD) Power switch off Below 1 Ω
      A49-5 (NODD) or A53-21 (NODD) - Body ground and other terminals Power switch off 10 kΩ or higher
    5. Reconnect the A49 inverter with converter assembly connector.
    6. Reconnect the A53 power management control ECU connector.

    OK 

    REPLACE POWER MANAGEMENT CONTROL ECU 

    (Refer to COMPONENTS [10/2014 - 10/2015] )

    NG 

    REPAIR OR REPLACE HARNESS OR CONNECTOR 

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