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Home >> Audi >> 2018 >> A6 Premium Plus >> Repair and Diagnosis >> External Pages >> Different car >> Section 130 (Hybrid Control System (Diagnostic Codes (P0069-273 - P0A75-336))) >> Hybrid Control System >> DTC P0A09-265: DC / DC Converter Status Circuit Low Input [08/2013 - ] >> Procedure

DTC P0A09-265: DC / DC Converter Status Circuit Low Input [08/2013 - ]: Procedure

WARNING: This page is about a different car, the 2014 Lexus ES 300h. However, it is still accessible from the selected car via links, so may be relevant.
  1. CHECK CONNECTOR CONNECTION CONDITION (POWER MANAGEMENT CONTROL ECU CONNECTOR) See step   3 

    NG → CONNECT SECURELY 

    OK: Go to next step 

  2. CHECK CONNECTOR CONNECTION CONDITION (INVERTER WITH CONVERTER ASSEMBLY CONNECTOR) See step   4 

    NG → CONNECT SECURELY 

    OK: Go to next step 

  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.
      GTY417988Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Standard Voltage

      Tester Connection Condition Specified Condition
      A31-21 (NODD) - H1-6 (E1) Power switch on (READY) 5 to 7 V
      TEXT IN ILLUSTRATION

      *a Component with harness connected
      (Power Management Control ECU)
    3. Turn the power switch off.

    NG → See step   7 

    OK: Go to next step 

  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: Go to next step 

  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 → See step   10 

    A: Go to next step 

  6. CHECK FOR INTERMITTENT PROBLEMS 

    Refer to CHECK FOR INTERMITTENT PROBLEMS [08/2013 - ]

    NG → REPAIR OR REPLACE MALFUNCTIONING PARTS, COMPONENT AND AREA 

    OK → See step   10 

  7. CHECK HARNESS AND CONNECTOR (RESISTANCE VALUE OF NODD INSIDE POWER MANAGEMENT CONTROL ECU) See step   11 

    NG → See step   8 

    OK → See step   9 

  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 instructed by the service information because this may cause a malfunction.

    2. Disconnect the A13 inverter with converter assembly connector.
    3. Disconnect the A31 power management control ECU connector.
    4. Measure the resistance according to the value(s) in the table below.
      GTY405841Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Standard Resistance

      Tester Connection Condition Specified Condition
      A13-5 (NODD) - A31-21 (NODD) Power switch off Below 1 Ω
      A13-5 (NODD) or A31-21 (NODD) - Body ground and other terminals Power switch off 10 kΩ or higher
      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)
    5. Reconnect the A13 inverter with converter assembly connector.
    6. Reconnect the A31 power management control ECU connector.

    NG → REPAIR OR REPLACE HARNESS OR CONNECTOR 

    OK → See step   10 

  9. REPLACE INVERTER WITH CONVERTER ASSEMBLY. Refer to  COMPONENTS [08/2013 - ] 
  10. REPLACE POWER MANAGEMENT CONTROL ECU. Refer to  COMPONENTS [08/2013 - ] 
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