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HYBRID CONTROL SYSTEM, Diagnostic DTC:P0A08-264

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DTC Code DTC Name
P0A08-264 DC / DC Converter Status Circuit
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DESCRIPTION

The hybrid vehicle converter (DC/DC converter) converts the DC 288 V of the HV battery into DC 12 V in order to supply power to areas such as the vehicle's lighting, audio, and ECU systems. In addition, it charges the auxiliary battery. A transistor bridge circuit initially converts DC 288 V into alternating current, and a transformer lowers its voltage. Then, it is rectified and smoothed (into DC) and converted into DC 12 V. The hybrid vehicle converter controls the output voltage in order to keep a constant voltage at the terminals of the auxiliary battery.

The power management control ECU (HV CPU) uses the NODD signal line to transmit a stop command to the hybrid vehicle converter and receive signals indicating the normal or abnormal condition of the 12 V charging system. If the vehicle is being driven with an inoperative hybrid vehicle converter, the voltage of the auxiliary battery will drop, which will prevent the continued operation of the vehicle. Therefore, the power management control ECU (HV CPU) monitors the operation of the hybrid vehicle converter and alerts the driver if it detects a malfunction.

DTC No. INF Code DTC Detection Condition Trouble Area
P0A08 264

DC/DC converter malfunction

Auxiliary battery voltage is 11 V or less

(1 trip detection logic)

  • Wire harness or connector

  • Inverter cooling system

  • Hybrid vehicle transaxle assembly

  • No. 3 frame wire

  • Rear traction motor with transaxle assembly

  • Inverter with converter assembly

  • Fusible link block assembly (MAIN, RR-B, DCDC, HV R/B No. 1)

  • DCDC-S fuse
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WIRING DIAGRAM

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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.

    Tip:

    Waiting for at least 10 minutes is required to discharge the high-voltage capacitor inside the inverter with converter assembly.

Tip:

  • After repair, clear the DTCs, turn the power switch off and wait for 30 seconds or more and perform the following procedure to confirm that the auxiliary battery low voltage indicated by this DTC has been repaired.


    1. Wait for 2 minutes with the shift lever in P, the power switch on (READY) and the following conditions met, then confirm that Data List item "+B" is between 13.0 and 15.0 V.

      (If charging is not performed and the electrical load increases, +B voltage may not be steady and gradually drops.)


      1. Headlight switch is in the HI position.

      2. A/C blower fan switch is in the HI position.

      3. Window defogger switch is turned on.


  • By performing the following procedure, the DC/DC converter function can be checked.


    1. Connect the AC/DC 400 A probe to the positive auxiliary battery cable.


      1. Turn the power switch on (READY) and leave the vehicle as it is until the electric current flowing into the auxiliary battery becomes 10 A or less.

      2. Turn the power switch on (READY) and the headlight switch and A/C blower fan switch in the HI position, and the window defogger turned on.

      3. Confirm that the current drawn from the auxiliary battery is 0 A or lower and the auxiliary battery voltage is between 13.0 and 15.0 V.


  • This DTC is stored when the power switch is on (READY) and the auxiliary battery voltage is 11 V or less. Therefore, this DTC may be also stored when a part other than the DC/DC converter is malfunctioning or depending on user operation.

    Table 1. Malfunction cases to store DTC P0A08-264
    Malfunction Case Remarks Inspection Step
    Fuse is blown. (DCDC-S, MAIN, RR-B, DCDC, HV R/B NO. 1) - 2 to 4
    The connector between the auxiliary battery and DC/DC converter is not connected securely. - 25, 27
    High-voltage insulation between the inverter, generator (MG1), motor (MG2) and body ground is poor (body ground). DTC P0AA6 may be stored if the ground potential fluctuates due to a high-voltage insulation malfunction. 1
    A signal connector of the power management control ECU or inverter is not connected securely. - 5, 6
    The DC/DC converter is malfunctioning. Inspect the DC/DC converter function. 12
    Control is suspended due to overheating. (The inverter water pump assembly is malfunctioning, the coolant is not sufficient, a hose is clogged, etc.)

    When the inverter is overheating, the DC/DC converter has self protection control that suspends the DC/DC converter control. As that time, this DTC may be stored.

    The suspended DC/DC converter control will return to normal by clearing the DTCs and turning the power switch off.

    		 13 to 16, 22

  • If this vehicle is used to jump start another vehicle with a discharged battery, a fuse may blow due to overcurrent or the DC/DC converter self-protection may be activated. Also, if this vehicle is jump started by a vehicle with a 24 V battery, the same malfunction may occur and this DTC may be stored. (The suspended DC/DC converter control will return to normal by clearing the DTCs and turning the power switch off.)


  • If the DC/DC converter is malfunctioning, the auxiliary battery cannot be charged. Therefore, once the power switch is turned off, it may be impossible to turn it on (READY) again if the auxiliary battery is completely discharged. In this case, charge the auxiliary battery. Be careful as charging is not performed during the inspection.

  • If the power switch turns off immediately after it is turned on (READY), the auxiliary battery voltage may be low. Charge the auxiliary battery.

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PROCEDURE


  1. Click here

    CHECK DTC OUTPUT (HV)


    1. Connect the intelligent tester 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 P0A08-264 only is output. A
      Any of the following DTCs are also output. B
      DTC No. Relevant Diagnosis
      P0A93-346 Inverter Cooling System Performance
      P0A94-547, 548, 549 DC / DC Converter Performance
      P0AA6-526, 613, 655 Hybrid Battery Voltage System Isolation Fault
      P0ADB-227 Hybrid Battery Positive Contactor Control Circuit Low
      P0ADF-229 Hybrid Battery Negative Contactor Control Circuit Low
      P0AE6-225 Hybrid Battery Precharge Contactor Control Circuit Low
      P0C73-776 Motor Electronics Coolant Pump "A" Control Performance
      P3004-131, 803 Power Cable Malfunction
      P314A-828 Inverter Coolant Pump Speed Signal

    5. Turn the power switch off.


  2. Click here

    CHECK FUSE (DCDC-S)


    1. A01NN7DE01

      Remove the DCDC-S fuse from the fusible link block assembly.

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

      Standard Resistance
      Tester Connection Switch Condition Specified Condition
      DCDC-S fuse terminals Always Below 1 Ω
      Table 2. Text in Illustration
      *1 Fusible Link Block Assembly

    3. Install the DCDC-S fuse.


  3. Click here

    CHECK FUSIBLE LINK BLOCK ASSEMBLY (MAIN, RR-B)


    1. A01NI5NE01

      Disconnect all the connectors from the fusible link block assembly.

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

      Standard Resistance
      Tester Connection Switch Condition Specified Condition
      terminal A - terminal B Always Below 1 Ω
      terminal A - P68-2 (B) Always Below 1 Ω
      Table 3. Text in Illustration
      *1 Fusible Link Block Assembly

    3. Connect the fusible link block assembly connectors.


  4. Click here

    CHECK FUSIBLE LINK BLOCK ASSEMBLY (DCDC, HV R/B NO. 1)


    1. Check the fusible links (DCDC and HV R/B NO.1) in the engine room junction block assembly for improper installation and for open circuits.

      OK
      The fusible links are installed securely. There are no open circuits.

  5. Click here

    CHECK CONNECTOR CONNECTION CONDITION (POWER MANAGEMENT CONTROL ECU CONNECTOR)


    1. A01NJQWE01

      Check the connections of the power management control ECU connectors.

      Table 4. Text in Illustration
      *1 for LHD *2 for RHD
      OK
      The connectors are connected securely and there are no contact problems.

  6. Click here

    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.

      A01NM1T
      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.
      Tip:

      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.


  7. Click here

    CHECK CABLE AND WIRE HARNESS

    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. A01NKG5

      Remove the inverter terminal cover from the inverter with converter assembly.

    3. A01NIYUE01

      Using a megohmmeter set to 500 V, measure the insulation resistance according to the value(s) in the table below.

      Note:

      Be sure to set the megohmmeter to 500 V when performing this test. Using a setting higher than 500 V can result in damage to the component being inspected.

      Standard Resistance
      Tester Connection Switch Condition Specified Condition
      z35-1 (U) - Body ground and shield ground Power switch off 1 MΩ or higher
      z35-2 (V) - Body ground and shield ground Power switch off 1 MΩ or higher
      z35-3 (W) - Body ground and shield ground Power switch off 1 MΩ or higher
      z37-3 (U) - Body ground and shield ground Power switch off 1 MΩ or higher
      z37-2 (V) - Body ground and shield ground Power switch off 1 MΩ or higher
      z37-1 (W) - Body ground and shield ground Power switch off 1 MΩ or higher
      Table 5. Text in Illustration
      *1 Three-phase AC Cable for MG1
      *2 Three-phase AC Cable for MG2
      Tip:

      Perform this inspection while the three-phase AC cable for MG1 and for MG2 are connected.

    4. Install the inverter terminal cover to the inverter with converter assembly.


  8. Click here

    CHECK AMD TERMINAL

    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. A01NL90

      Check that the nuts for the AMD terminals are tightened to the specified torque, the AMD terminals are connected securely, and there are no contact problems.

      8.35 N*m 85 kgf*cm
      Result
      Result Proceed to
      There are no arc marks. The terminals are connected securely and there are no contact problems. A
      There are no arc marks. The terminals are not connected securely and there is a contact problem. B
      There are arc marks. - C

  9. Click here

    CHECK TERMINAL VOLTAGE (AMD TERMINAL)

    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. Connect the cable to the negative auxiliary battery terminal.

    3. A01NMT7

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

      Standard Voltage
      Tester Connection Switch Condition Specified Condition
      AMD terminal (Inverter with converter assembly side) - Body ground Power switch off 11 to 14 V

  10. Click here

    CHECK HARNESS AND 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.

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

    3. Turn the power switch on (IG).

      Tip:

      Turning the power switch on (IG) with the service grip removed causes interlock switch system DTC P0A0D-350 to be output.

    4. A01NN9WE17

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

      Standard Voltage
      Tester Connection Switch Condition Specified Condition
      A79-25 (IGCT) - Body ground Power switch on (IG) 11 to 14 V
      A79-36 (S) - Body ground Power switch on (IG) 11 to 14 V
      Table 6. Text in Illustration
      *1

      Front view of wire harness connector

      (to Inverter with Converter Assembly)

    5. Turn the power switch off.

    6. Connect the inverter with converter assembly connector.


  11. Click here

    CHECK POWER MANAGEMENT CONTROL ECU


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

    2. A01NN9WE09

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

      Standard Resistance
      Tester Connection Switch Condition Specified Condition
      A79-24 (NODD) - Body ground Power switch off 110 to 150 kΩ
      Table 7. Text in Illustration
      *1

      Front view of wire harness connector

      (to Inverter with Converter Assembly)

    3. Connect the inverter with converter assembly connector.


  12. Click here

    CHECK DC/DC CONVERTER FUNCTION

    Tip:

    The current at the AMD terminal cannot be measured directly because of space limitations. Measure the current flowing from the auxiliary battery instead.


    1. Connect the AC/DC 400 A probe to the positive auxiliary battery line.

    2. Install the service plug grip.

    3. Turn the power switch on (READY) and leave the vehicle as it is until the electric current flowing into the auxiliary battery becomes 10 A or less.

      Tip:

      If the power switch turns off immediately after it is turned on (READY), auxiliary battery voltage may be low. Recharge the auxiliary battery and perform this procedure again.

    4. A01NNC0E02
      A01NLJVE02

      Measure the current flowing from the auxiliary battery with the power switch on (READY), the headlight position switch and blower motor switch in the HI position, and the rear window defogger turned on.

      Standard Current
      Item Switch Condition Specified Condition
      Current flowing from auxiliary battery

      Power switch on (READY)

      (The headlight position switch and blower motor switch are in the HI position, and the rear window defogger is turned on.)

      		 0 A or less (no current from auxiliary battery)

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

      Standard Voltage
      Tester Connection Switch Condition Specified Condition
      Auxiliary battery voltage

      Power switch on (READY)

      (The headlight position switch and blower motor switch are in the HI position, and the rear window defogger is turned on.)

      		 13 to 15 V

    6. Turn the power switch off.


  13. Click here

    CHECK QUANTITY OF HV COOLANT


    1. Check the coolant level in the inverter reserve tank.

    2. Check for coolant leaks.

      Table 8. Result
      Result Proceed to
      No leaks are found and coolant level in the inverter reserve tank assembly is above the low line. A
      No leaks are found and coolant level in the inverter reserve tank assembly is below the low line. B
      Coolant leaks are evident. C
      Tip:

      After repairing the coolant leaks and adding coolant, perform the "Activate the Water Pump" Active Test (HV Active Test item) and the "Control the Electric Cooling Fan" Active Test (Engine Active Test item) and make sure that there are no malfunctions.


  14. Click here

    CHECK COOLANT HOSE


    1. Check if the hoses of the cooling system are kinked or clogged.


  15. Click here

    PERFORM ACTIVE TEST USING INTELLIGENT TESTER (CONTROL THE ELECTRIC COOLING FAN)


    1. Connect the intelligent tester to the DLC3.

    2. Turn the power switch on (IG).

    3. Enter the following menus: Powertrain / Engine and ECT / Active Test / Control the Electric Cooling Fan.

    4. Perform the "Control the Electric Cooling Fan" Active Test.

      OK
      The cooling fan rotates.

    5. Turn the power switch off.


  16. Click here

    CHECK HV COOLANT (CHECK FOR CONDITIONS THAT MAY HAVE CAUSED FREEZING)


    1. Connect the intelligent tester to the DLC3.

    2. Turn the power switch on (IG).

    3. Read the freeze frame data Ambient Temperature using the intelligent tester.

    4. Check if the freeze frame data Ambient Temperature is below freezing.

      Result
      Result Proceed to
      Ambient Temperature value is above freezing temperature of the HV coolant A
      Ambient Temperature value is below freezing temperature of the HV coolant B
      Tip:

      • HV coolant (SLLC) with a 30% concentration freezes at -15 °C (5°F) and HV coolant (SLLC) with a 50% concentration freezes at -35°C (-31°F).

      • If the HV coolant freezes in the HV radiator or inverter water pump assemblyp, the coolant temperature in the inverter with converter assembly rises because the HV coolant cannot circulate. As a result, a DTC may be set.

      • A DTC is set when the inverter water pump assembly impeller cannot rotate due to freezing of the HV coolant.

      • If a DTC is set due to freezing of HV coolant, the problem cannot be reproduced. Judge whether freezing of HV coolant occurred according to the freeze point of the HV coolant, HV coolant change history and ambient temperature when the DTC was set.

    5. Turn the power switch off.


  17. Click here

    CHECK HYBRID VEHICLE TRANSAXLE ASSEMBLY (MG1)

    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. A01NKG5

      Remove the inverter terminal cover from the inverter with converter assembly.

    3. A01NMJPE01

      Disconnect the three-phase AC cables for MG1 from the inverter with converter assembly.

      Table 9. Text in Illustration
      *1 Three-phase AC Cables for MG1
    4. A01NIBWE07

      Using a megohmmeter set to 500 V, measure the insulation resistance according to the value(s) in the table below.

      Note:

      Be sure to set the megohmmeter to 500 V when performing this test. Using a setting higher than 500 V can result in damage to the component being inspected.

      Standard Resistance
      Tester Connection Switch Condition Specified Condition
      z36-3 (U) - Body ground and shield ground Power switch off 100 MΩ or higher
      z36-2 (V) - Body ground and shield ground Power switch off 100 MΩ or higher
      z36-1 (W) - Body ground and shield ground Power switch off 100 MΩ or higher
      Table 10. Text in Illustration
      *1 Three-phase AC Cables for MG1
      *2 Shield Ground

    5. Connect the three-phase AC cables for MG1 to the inverter with converter assembly.

    6. Install the inverter terminal cover to the inverter with converter assembly.


  18. Click here

    CHECK HYBRID VEHICLE TRANSAXLE ASSEMBLY (MG2)

    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. A01NKG5

      Remove the inverter terminal cover from the inverter with converter assembly.

    3. A01NJJLE01

      Disconnect the three-phase AC cables for MG2 from the inverter with converter assembly.

      Table 11. Text in Illustration
      *1 Three-phase AC Cables for MG2
    4. A01NJJ9E06

      Using a megohmmeter set to 500 V, measure the insulation resistance according to the value(s) in the table below.

      Note:

      Be sure to set the megohmmeter to 500 V when performing this test. Using a setting higher than 500 V can result in damage to the component being inspected.

      Standard Resistance
      Tester Connection Switch Condition Specified Condition
      z38-3 (U) - Body ground and shield ground Power switch off 100 MΩ or higher
      z38-2 (V) - Body ground and shield ground Power switch off 100 MΩ or higher
      z38-1 (W) - Body ground and shield ground Power switch off 100 MΩ or higher
      Table 12. Text in Illustration
      *1 Three-phase AC Cables for MG2
      *2 Shield Ground

    5. Connect the three-phase AC cables for MG2 to the inverter with converter assembly.

    6. Install the inverter terminal cover to the inverter with converter assembly.


  19. Click here

    CHECK REAR TRACTION MOTOR WITH TRANSAXLE ASSEMBLY

    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. A01NKG5

      Remove the inverter terminal cover from the inverter with converter assembly.

    3. A01NKLLE01

      Disconnect the No. 3 wire frame from the inverter with converter assembly.

      Table 13. Text in Illustration
      *1 Three-phase AC Cable for MGR
    4. A01NLK6E06

      Using a megohmmeter set to 500 V, measure the insulation resistance according to the value(s) in the table below.

      Note:

      Be sure to set the megohmmeter to 500 V when performing this test. Using a setting higher than 500 V can result in damage to the component being inspected.

      Standard Resistance
      Tester Connection Switch Condition Specified Condition
      g4-3 (R-U) - Body ground and shield ground Power switch off 10 MΩ or higher
      g4-2 (R-V) - Body ground and shield ground Power switch off 10 MΩ or higher
      g4-1 (R-W) - Body ground and shield ground Power switch off 10 MΩ or higher
      Table 14. Text in Illustration
      *1 Three-phase AC Cable for MGR
      *2 Shield Ground

    5. Connect the No. 3 wire frame to the inverter with converter assembly.

    6. Install the inverter terminal cover to the inverter with converter assembly.


  20. Click here

    CHECK AMD TERMINAL (ENGINE ROOM JUNCTION BLOCK ASSEMBLY SIDE)

    CAUTION:

    Be sure to wear insulated gloves.


    1. A01NKL4

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

      Standard Voltage
      Tester Connection Switch Condition Specified Condition
      AMD terminal (Engine Room Junction Block Assembly side) - Body ground Power switch off 11 to 14 V

  21. Click here

    INSPECT POWER MANAGEMENT CONTROL ECU


    1. A01NKGOE04

      Disconnect all the connectors from the power management control ECU.

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

      Standard Resistance
      Tester Connection Switch Condition Specified Condition
      A80-21 (NODD) - F97-6 (E1) Power switch off 110 to 150 kΩ
      Table 15. Text in Illustration
      *1

      Component without harness connected

      (to Power Management Control ECU)
      Result
      Result Proceed to
      OK A
      NG (for LHD) B
      NG (for RHD) C

    3. Connect the power management control ECU connectors.


  22. Click here

    REPLACE HV COOLANT


    1. Replace the HV coolant with coolant having an appropriate concentration (appropriate freeze point) for the vehicle usage conditions (Click here).


  23. Click here

    CHECK NO.3 WIRE FRAME (REAR MOTOR CABLE)

    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. A01NJW0

      Disconnect the No. 3 wire frame from the rear traction motor with transaxle assembly.

    3. A01NKG5

      Remove the inverter terminal cover from the inverter with converter assembly.

    4. A01NKLLE01

      Disconnect the No. 3 wire frame from the inverter with converter assembly.

      Table 16. Text in Illustration
      *1 Three-phase AC Cable for MGR
    5. A01NLQ0E02

      Using a megohmmeter set to 500 V, measure the insulation resistance according to the value(s) in the table below.

      Note:

      Be sure to set the megohmmeter to 500 V when performing this test. Using a setting higher than 500 V can result in damage to the component being inspected.

      Standard Resistance
      Tester Connection Switch Condition Specified Condition
      g4-3 (R-U) - Body ground and shield ground Power switch off 10 MΩ or higher
      g4-2 (R-V) - Body ground and shield ground Power switch off 10 MΩ or higher
      g4-1 (R-W) - Body ground and shield ground Power switch off 10 MΩ or higher
      Table 17. Text in Illustration
      *1 Three-phase AC Cable for MGR
      *2 Shield Ground

    6. Connect the No. 3 wire frame to the rear traction motor with transaxle assembly.

    7. Connect the No. 3 wire frame to the inverter with converter assembly.

    8. Install the inverter terminal cover to the inverter with converter assembly.


  24. Click here

    CHECK EXTENSION WIRE ASSEMBLY


    1. Remove the rear traction motor with transaxle assembly (Click here).

    2. Remove the extension wire assembly from the rear traction motor with transaxle assembly.

    3. A01NI2GE03

      Using a megohmmeter set to 500 V, measure the insulation resistance according to the value(s) in the table below.

      Note:

      Be sure to set the megohmmeter to 500 V when performing this test. Using a setting higher than 500 V can result in damage to the component being inspected.

      Standard Resistance
      Tester Connection Switch Condition Specified Condition
      R-U - Shield shell Power switch off 100 MΩ or higher
      R-V - Shield shell Power switch off 100 MΩ or higher
      R-W - Shield shell Power switch off 100 MΩ or higher
      Table 18. Text in Illustration
      *1 Extension Wire Assembly
      *2 Shield Shell

    4. Install the extension wire assembly to the rear traction motor with transaxle assembly.

    5. Install the rear traction motor with transaxle assembly.


  25. Click here

    CHECK HARNESS AND CONNECTOR (INVERTER WITH CONVERTER ASSEMBLY - DCDC-S FUSE)

    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. Remove the DCDC-S fuse from the fusible link block assembly.

    4. A01NMD9E01

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

      Standard Resistance
      Tester Connection Switch Condition Specified Condition
      A79-36 (S) or 2 (DCDC-S fuse) - Body ground and other terminals Power switch off 10 kΩ or higher
      Table 19. Text in Illustration
      *1

      Front view of wire harness connector

      (to Inverter with Converter Assembly)
      *2 Fusible Link Block Assembly
      *3 DCDC-S fuse

    5. Install the DCDC-S fuse.

    6. Connect the inverter with converter assembly connector.


  26. Click here

    REPLACE INVERTER WITH CONVERTER ASSEMBLY


    1. Replace the inverter with converter assembly (Click here).


  27. Click here

    REPAIR OR REPLACE HARNESS OR CONNECTOR


  28. Click here

    GO TO DTC CHARTClick here

  29. Click here

    REPLACE FUSIBLE LINK BLOCK ASSEMBLY (MAIN, RR-B)

  30. Click here

    REPLACE FUSIBLE LINK BLOCK ASSEMBLY (DCDC, HV R/B NO.1)

  31. Click here

    CONNECT SECURELY

  32. Click here

    REPLACE MALFUNCTIONING PARTS

  33. Click here

    REPAIR OR REPLACE HARNESS OR CONNECTOR

  34. Click here

    REPLACE INVERTER WITH CONVERTER ASSEMBLYClick here

  35. Click here

    ADD HV COOLANT

  36. Click here

    INSPECT FOR COOLANT LEAK AND ADD COOLANT

  37. Click here

    CORRECT THE PROBLEM

  38. Click here

    CHECK COOLING FAN SYSTEMClick here

  39. Click here

    REPLACE HYBRID VEHICLE TRANSAXLE ASSEMBLYClick here

  40. Click here

    REPLACE POWER MANAGEMENT CONTROL ECU (for LHD)Click here

  41. Click here

    COMPLETED

  42. Click here

    REPLACE NO.3 WIRE FRAMEClick here

  43. Click here

    REPLACE EXTENSION WIRE ASSEMBLYClick here

  44. Click here

    REPLACE REAR TRACTION MOTOR WITH TRANSAXLE ASSEMBLYClick here

  45. Click here

    REPLACE FUSE (DCDC-S)

  46. Click here

    REPLACE FUSE (DCDC-S)

  47. Click here

    REPLACE POWER MANAGEMENT CONTROL ECU (for RHD)Click here