LEMON Manuals: Even more car manuals for everyone
Home >> Lexus >> 2010 >> HS 250h >> Repair and Diagnosis >> Hybrid/Electric Powertrain >> Testing and Diagnosis >> Hybrid Control (Diagnostic Codes (P0343-747 - P0A78-282) >> Hybrid Control System >> DTC P0A09-265: DC / DC Converter Status Circuit Low Input >> Procedure

DTC P0A09-265: DC / DC Converter Status Circuit Low Input: Procedure

  1. CHECK DTC OUTPUT (HV) 
    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. Check if DTCs are output.

      Result

      Result Proceed to
      DTC P0A09-265 only is output. A
      DTC P0AE6-225 is also output. B
    5. Turn the power switch off.

    B → See step   6 

    A: Go to next step 

  2. CHECK CONNECTOR CONNECTION CONDITION (HYBRID VEHICLE CONTROL ECU CONNECTOR) See step   3 

    NG → CONNECT SECURELY 

    OK: Go to next step 

  3. CHECK CONNECTOR CONNECTION CONDITION (HYBRID VEHICLE CONVERTER CONNECTOR) 
    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 repair service information because this may cause a malfunction.

    2. Check the connection of the hybrid vehicle converter (DC/DC converter) connector.
      Fig 1: Identifying z17 Hybrid Vehicle Converter Connector
      GTY261924Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      OK

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

    NG → CONNECT SECURELY 

    OK: Go to next step 

  4. CHECK HARNESS AND CONNECTOR (HYBRID VEHICLE CONTROL ECU - HYBRID VEHICLE CONVERTER) 
    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 repair service information because this may cause a malfunction.

    2. Disconnect connector A58 from the hybrid vehicle control ECU.
    3. Disconnect connector z17 from the hybrid vehicle converter.
      Fig 2: Identifying z17 Hybrid Vehicle Converter Connector
      GTY261924Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    4. Measure the resistance according to the value(s) in the table below.
      Fig 3: Identifying A58 Hybrid Vehicle Control ECU, z17 Hybrid Vehicle Converter & NODD Terminals
      GTY258900Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Standard Resistance (Check for Open)

      Tester Connection Switch Condition Specified Condition
      A58-75 (NODD) - z17-2 (NODD) Power switch off Below 1 Ω

      Standard Resistance (Check for Short)

      Tester Connection Switch Condition Specified Condition
      A58-75 (NODD) or z17-2 (NODD) - Body ground and other terminals Power switch off 10 kΩ or higher
      TEXT IN ILLUSTRATION

      *1 Front view of wire harness connector
      (to Hybrid Vehicle Control ECU)
      *2 Rear view of wire harness connector
      (to Hybrid Vehicle Converter)
    5. Connect the hybrid vehicle converter connector.
    6. Connect the hybrid vehicle control ECU connector.

    NG → REPAIR OR REPLACE HARNESS AND CONNECTOR 

    OK: Go to next step 

  5. CHECK HYBRID VEHICLE CONTROL ECU See step   9 

    NG → See step   8 

    OK → See step   7 

  6. GO TO DTC CHART (P0AE6-225). Refer to DTC P0AE6-225: Hybrid Battery Precharge Contactor Control Circuit Low 
  7. REPLACE HYBRID VEHICLE CONVERTER. Refer to COMPONENTS 
  8. REPLACE HYBRID VEHICLE CONTROL ECU. Refer to COMPONENTS 
scientia non olet · About LEMON Manuals