HYBRID CONTROL SYSTEM, Diagnostic DTC:P0A92-261

DTC Code DTC Name
P0A92-261 Hybrid Generator Performance

DESCRIPTION

For a description of MG1 Click here.

DTC No. INF Code DTC Detection Condition Trouble Area
P0A92 261 Generator magnetic force deterioration or same phase short circuit

  • Hybrid vehicle transaxle assembly

  • Inverter with converter assembly

  • Wire harness or connector

  • Hybrid Vehicle Control ECU Assembly

CAUTION / NOTICE / HINT

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 removing 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 Click here.

    Tech Tips

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

Note

After turning the power switch off, waiting time may be required before disconnecting the cable from the negative (-) auxiliary battery terminal. Therefore, make sure to read the disconnecting the cable from the negative (-) auxiliary battery terminal notices before proceeding with work Click here.

PROCEDURE


  1. CHECK DTC OUTPUT (HYBRID CONTROL)


    1. Connect the GTS to the DLC3.

    2. Turn the power switch on (IG).

    3. Enter the following menus: Powertrain / Hybrid Control / Trouble Codes.

    4. Check for DTCs.

      Result
      Result Proceed to
      P0A92-261 only is output, or DTCs except the ones in the table below are also output. A
      Any of the following DTCs are also output. B
      DTC No. Relevant Diagnosis
      P06B0-163 Sensor Power Supply "A" Circuit / Open
      P06D6-511 Sensor Reference Voltage "F" Circuit / Open
      P06E6-164 Sensor Power Supply "C" Circuit / Open
      P0A1A-151, 166, 658, 791 Generator Control Module
      P0A1B-198, 786, 794 Drive Motor "A" Control Module
      P0A1D (all INF codes)*1 Hybrid Powertrain Control Module
      P0A3F-243 Drive Motor "A" Position Sensor Circuit
      P0A40-500 Drive Motor "A" Position Sensor Circuit Range / Performance
      P0A41-245 Drive Motor "A" Position Sensor Circuit Low
      P0A4B-253 Generator Position Sensor Circuit
      P0A4C-513 Generator Position Sensor Circuit Range / Performance
      P0A4D-255 Generator Position Sensor Circuit Low
      P0A51-174 Drive Motor "A" Current Sensor Circuit
      P0A7A-203 Generator Inverter Performance
      P0A90-509 Drive Motor "A" Performance
      P0A92-521 Hybrid Generator Performance
      P0AA6 (all INF codes)*1 Hybrid Battery Voltage System Isolation Fault
      P0BEA-290 Drive Motor "A" Phase V Current Sensor Circuit Range / Performance
      P0BEE-298 Drive Motor "A" Phase W Current Sensor Circuit Range / Performance
      P0C19-306 Drive Motor "A" Torque Delivered Performance
      P0C76-523 Hybrid Battery System Discharge Time Too Long
      P0D2E-586 Drive Motor "A" Inverter Voltage Sensor Circuit Range / Performance
      P0D2F-266 Drive Motor "A" Inverter Voltage Sensor Circuit Low
      P0D30-267 Drive Motor "A" Inverter Voltage Sensor Circuit High
      P0E05-328 Generator Phase V Current Sensor Circuit Range / Performance
      P0E09-336 Generator Phase W Current Sensor Circuit Range / Performance
      P0E32-585 DC/DC Converter Voltage Sensor "A" Range / Performance
      P0E33-589 DC/DC Converter Voltage Sensor "A" Low
      P0E34-590 DC/DC Converter Voltage Sensor "A" High
      P0E71-344 Generator Torque Delivered Performance
      P1C2A-155 Generator A/D Converter Circuit
      P1C2B-192 Drive Motor "A" A/D Converter Circuit
      P1C2D-587 Hybrid Battery Voltage / DC/DC Converter Voltage Correlation
      P1C3C-294 Drive Motor "A" Phase V Current Sensor Correlation
      P1C3D-302 Drive Motor "A" Phase W Current Sensor Correlation
      P1C3E-333 Generator Phase V Current Sensor Correlation
      P1C3F-341 Generator Phase W Current Sensor Correlation
      P1C4A-288 Drive Motor "A" Phase V Current Sensor Sub Circuit Range / Performance
      P1C4F-296 Drive Motor "A" Phase W Current Sensor Sub Circuit Range / Performance
      P1C54-326 Generator Phase V Current Sensor Sub Circuit Range / Performance
      P1C59-334 Generator Phase W Current Sensor Sub Circuit Range / Performance
      P1C6D-501 Drive Motor "A" Phase V Current Sensor Offset Range / Performance
      P1C6E-502 Drive Motor "A" Phase W Current Sensor Offset Range / Performance
      P1C71-515 Generator Phase V Current Sensor Offset Range / Performance
      P1C72-516 Generator Phase W Current Sensor Offset Range / Performance
      P1C73-512 Sensor Standard Voltage "F" Circuit / Open
      P1CA6-156 Generator Control Module Malfunction
      P1CA7-193 Drive Motor Control Module Malfunction
      P1CAC-200 Generator Position Sensor Angle Malfunction
      P1CAD-168 Drive Motor "A" Position Sensor Angle Malfunction
      P1CAF-792 Generator Position Sensor REF Signal Cycle Malfunction
      P1CB0-795 Drive Motor "A" Position Sensor REF Signal Cycle Malfunction
      P1CB2-793 Generator Position Sensor REF Signal Stop Malfunction
      P1CB3-796 Drive Motor "A" Position Sensor REF Signal Stop Malfunction
      P3004-132 High Voltage Power Resource
      P3133-659 Communication Error from Generator to Drive Motor "A"
      P3134-661 Communication Error from Drive Motor "A" to Generator

      Tech Tips


      • *1: If any INF codes are output for this DTC, refer to the corresponding diagnostic procedure.

      • P0A92-261 may be stored due to a malfunction which causes the DTCs in the preceding table to be stored. In this case, first troubleshoot the output DTCs in the preceding table. Then, perform a reproduction test to check that no DTCs are output.

    5. Turn the power switch off.


    B

    GO TO DTC CHART (HYBRID CONTROL SYSTEM) Click here

    A

  2. SIMULATION TEST


    1. Turn the power switch on (READY).

    2. Leave the vehicle for 1 minute with the engine on (with MG1 rotating).

      Tech Tips

      If the accelerator pedal is depressed with shift lever in (P), the engine will start.

    3. Connect the GTS to the DLC3.

    4. Enter the following menus: Powertrain / Hybrid Control / Trouble Codes.

    5. Check for DTCs.

      Result
      Result Proceed to
      P0A92-261 is output or no DTCs are output. A
      Any DTCs other than P0A92-261 are output. B

    6. Turn the power switch off.


    B

    GO TO DTC CHART (HYBRID CONTROL SYSTEM) Click here

    A

  3. 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.

    2. Check the connector connections and contact pressure of the low voltage connectors of the inverter with converter assembly Click here.

      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.

      A00046KE03
      OK
      The connectors are connected securely and there are no contact pressure problems.

      Tech Tips

      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.


    NG

    CONNECT SECURELY

    OK

  4. CHECK HYBRID VEHICLE CONTROL ECU ASSEMBLY


    1. Turn the power switch on (IG).

    2. A0004BQE02
      Text in Illustration
      *a

      Component with harness connected

      (Hybrid Vehicle Control ECU Assembly)

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

      Standard Voltage
      Tester Connection Condition Specified Condition
      A79-12 (HSDN) - H211-6 (E1) Power switch on (IG) Below 4.5 V

    3. Turn the power switch off.


    NG

    CHECK HARNESS AND CONNECTOR (HYBRID VEHICLE CONTROL ECU ASSEMBLY - INVERTER WITH CONVERTER ASSEMBLY) Click here

    OK

  5. CHECK INVERTER WITH CONVERTER ASSEMBLY (GENERATOR CABLE CONNECTION CONDITION)

    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. B001VFZ

      Remove the upper inverter cover (generator cable side) from the inverter with converter assembly.

    3. B001VBO

      Check that the bolts for the generator cable are tightened to the specified torque, the generator cable is connected securely, and there are no contact problems.

      Specified Condition
      T=8.0 N*m (82 kgf*cm, 71 in.*lbf)

      Note

      Make sure that the tightening torque of the bolt is between 6.4 and 9.6 N*m (65 and 98 kgf*cm, 57 and 85 in.*lbf).

    4. Disconnect the generator cable from the inverter with converter assembly.

    5. Check for arc marks at the terminals for the generator cable.

      Result
      Result Proceed to
      The terminals are connected securely and there are no contact problems. There are no arc marks. A
      The terminals are not connected securely and there is a contact problem. There are arc marks. B
      The terminals are not connected securely and there is a contact problem. There are no arc marks. C
      The terminals are connected securely and there are no contact problems. There are arc marks. B

    6. Connect the generator cable to the inverter with converter assembly.

    7. Install the upper inverter cover (generator cable side).


    A

    REPLACE HYBRID VEHICLE TRANSAXLE ASSEMBLY Click here

    B

    REPLACE MALFUNCTIONING PARTS

    C

    CONNECT SECURELY

  6. CHECK HARNESS AND CONNECTOR (HYBRID VEHICLE CONTROL ECU ASSEMBLY - INVERTER WITH CONVERTER 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. Disconnect the A14 inverter with converter assembly connector.

    3. Disconnect the A78 and A79 hybrid vehicle control ECU assembly connectors.

    4. Connect the cable to the negative (-) auxiliary battery terminal.

    5. Turn the power switch on (IG).

    6. A0007BGE02
      Text in Illustration
      *a

      Rear view of wire harness connector

      (to Hybrid Vehicle Control ECU Assembly)
      *b

      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 Condition Specified Condition
      A79-12 (HSDN) or A14-40 (HSDN) - Body ground Power switch on (IG) Below 1 V

      Note

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

    7. Turn the power switch off.

    8. Disconnect the cable from the negative (-) auxiliary battery terminal.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      A79-12 (HSDN) - A78-3 (IG2) Power switch off 10 kΩ or higher
      A79-12 (HSDN) - A79-4 (+B1) Power switch off 10 kΩ or higher
      A79-12 (HSDN) - A79-6 (MREL) Power switch off 10 kΩ or higher
      A14-40 (HSDN) - A14-30 (+B) Power switch off 10 kΩ or higher
      A14-40 (HSDN) - A14-31 (+B2) Power switch off 10 kΩ or higher

    10. Reconnect the A14 inverter with converter assembly connector.

    11. Reconnect the A78 and A79 hybrid vehicle control ECU assembly connectors.


    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  7. CHECK INVERTER WITH CONVERTER 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. Disconnect the A14 inverter with converter assembly connector.

    3. A000451E03
      Text in Illustration
      *a

      Component without harness connected

      (Inverter with Converter Assembly)

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      A14-40 (HSDN) - A14-30 (+B) Power switch off 5 kΩ or higher
      A14-40 (HSDN) - A14-31 (+B2) Power switch off 5 kΩ or higher

    4. Reconnect the A14 inverter with converter assembly connector.


    OK

    REPLACE HYBRID VEHICLE CONTROL ECU ASSEMBLY Click here

    NG

    REPLACE INVERTER WITH CONVERTER ASSEMBLY Click here