HYBRID CONTROL SYSTEM, Diagnostic DTC:P0C29-865

DTC Code DTC Name
P0C29-865 Auxiliary Transmission Fluid Pump Driver Circuit Performance

DESCRIPTION

The oil pump motor controller controls the rotation speed of the oil pump motor (three-phase brushless motor) in accordance with rotation speed request signals sent from the hybrid vehicle control ECU. The controller also outputs the oil pump motor status as a signal to the hybrid vehicle control ECU.

A01GZFXE03
DTC No. INF Code DTC Detection Condition Trouble Area
P0C29 865

The hybrid vehicle control ECU receives signals that indicate an abnormal condition of components (such as the oil pump motor controller or oil pump motor) from the oil pump motor controller.

Signals indicating that the oil pump is locked (there is no edge output from the rotor position sensor although a motor operation request is sent) or a malfunction in the oil pump motor controller are received.

  • Hybrid vehicle control ECU

  • Oil pump motor controller

  • Oil with motor pump assembly

  • Wire harness or connector

  • Auxiliary battery

  • Oil pump motor controller bracket

WIRING DIAGRAM

A01GWV3E05

INSPECTION PROCEDURE

PROCEDURE


  1. CHECK DTC OUTPUT (HV)


    1. Connect the intelligent tester to the DLC3.

    2. Turn the power switch on (IG).

    3. Select the following menu items: Powertrain / Hybrid Control / Trouble Codes.

    4. Check if DTCs are output.

      Result
      Result Proceed to
      P0C29-865 only is output. A
      P0C2E-859 is output. B

    B

    GO TO DTC CHART Click here

    A

  2. CHECK FREEZE FRAME DATA (AUXILIARY BATTERY VOLTAGE)


    1. Select the following menu items: Powertrain / Hybrid Control / Trouble Codes.

    2. Read the freeze frame data (auxiliary battery voltage (+B)) of DTC PP0C29-865.

      OK
      +B is 10 V or more.

    NG

    CHECK AUXILIARY BATTERY

    OK

  3. CLEAR DTC


    1. Select the following menu items: Powertrain / Hybrid Control / Trouble Codes.

    2. Read and record the DTCs and freeze frame data.

    3. Select the following menu items: Powertrain / Hybrid Control / Trouble Codes.

    4. Clear DTCs and freeze frame data.


    NEXT

  4. CHECK DTC OUTPUT (HV)


    1. Turn the power switch on (IG), wait 5 seconds or more and check for DTCs.

    2. If DTCs are not output after turning the power switch on (IG), wait 5 seconds or more after ST-on and check for DTCs again (set the vehicle to ST-on after turning the power switch on (IG)).

      Tech Tips

      ST-on is a state that occurs when the READY indicator in the combination meter blinks after the power switch is pressed with the brake pedal depressed.

      Result
      Result Proceed to
      The DTC is output several seconds (approximately 5 seconds) after the power switch is turned on (IG). (SI signal circuit) A
      The DTC is output several seconds (approximately 5 seconds) after the ST-on state occurs. (Motor malfunction) B
      The DTC is not output. C

    B

    CHECK CONNECTOR CONNECTION CONDITION (OIL PUMP MOTOR CONTROLLER CONNECTOR) Click here

    C

    CHECK FOR INTERMITTENT PROBLEMS Click here

    A

  5. CHECK HYBRID VEHICLE CONTROL ECU (CHECK WAVEFORM)


    1. A01GZV7E03

      Connect an oscilloscope between the hybrid vehicle control ECU terminals specified in the table below, and measure the waveform.

      Item Contents
      Terminal A76-32 (OPM1) - A77-7 (E1)
      Equipment Setting 5 V/DIV., 500 μs./DIV.
      Condition Power switch on (IG)
      Result
      Result Proceed to
      Waveform is flat, and is stuck on the +B side. A
      Waveform is flat, and is stuck on the GND side. B
      Normal C

    B

    CHECK CONNECTOR CONNECTION CONDITION (OIL PUMP MOTOR CONTROLLER) Click here

    C

    CHECK NOISE CONDITIONS Click here

    A

  6. CHECK HARNESS AND CONNECTOR (HYBRID VEHICLE CONTROL ECU - OIL PUMP MOTOR CONTROLLER)


    1. A01GX7LE24

      Turn the power switch off.

    2. Disconnect connector A76 from the hybrid vehicle control ECU.

    3. Disconnect connector A80 from the oil pump motor controller.

    4. Turn the power switch on (IG).

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

      Standard voltage
      Tester Connection Switch Condition Specified Condition
      A76-32 (OPM1) or A80-6 (SI) - Body ground Power switch on (IG) Below 1 V

      Note

      Turning the power switch on (IG) with the hybrid vehicle control ECU and oil pump motor controller connectors disconnected causes other DTCs to be stored. Clear the DTCs after performing this inspection.


    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  7. CHECK HYBRID VEHICLE CONTROL ECU (CHECK +B SHORT)


    1. Turn the power switch off.

    2. Connect connector A76 to the hybrid vehicle control ECU.

    3. Turn the power switch on (IG).

    4. A01GW3KE11

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

      Standard voltage
      Tester Connection Switch Condition Specified Condition
      A80-6 (SI) - Body ground Power switch on (IG) Below 1 V

      Note

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


    NG

    REPLACE HYBRID VEHICLE CONTROL ECU Click here

    OK

  8. CHECK HYBRID VEHICLE CONTROL ECU


    1. A01GW3KE11

      Turn the power switch on (IG).

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

      Standard
      Tester Connection Condition Specified Condition
      A80-6 (SI) - Body ground Power switch on (IG) Approximately 1 kHz

      Note

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

      Tech Tips

      Perform this inspection with the hybrid vehicle control ECU connectors connected.


    NG

    REPLACE HYBRID VEHICLE CONTROL ECU Click here

    OK

    REPLACE OIL PUMP MOTOR CONTROLLER Click here

  9. CHECK CONNECTOR CONNECTION CONDITION (OIL PUMP MOTOR CONTROLLER)

    Note

    Before disconnecting the connectors, confirm that they are properly connected by checking that the locking claws are engaged and that the connectors do not pull out.


    1. A01H1EDE01

      Check the connections of the oil pump motor controller connectors.

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

      Tech Tips

      For connector A, when connecting it, 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

  10. CHECK CONNECTOR CONNECTION CONDITION (HYBRID VEHICLE CONTROL ECU CONNECTOR)


    1. A01GW3PE01

      Check the connections of the hybrid vehicle control ECU connectors.

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

    NG

    CONNECT SECURELY

    OK

  11. CHECK HARNESS AND CONNECTOR (HYBRID VEHICLE CONTROL ECU - OIL PUMP MOTOR CONTROLLER)


    1. A01GX7LE24

      Turn the power switch off.

    2. Disconnect connector A76 from the hybrid vehicle control ECU.

    3. Disconnect connector A80 from the oil pump motor controller.

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

      Standard resistance (Check for open)
      Tester Connection Switch Condition Specified Condition
      A76-32 (OPM1) - A80-6 (SI) Power switch off Below 1 Ω
      Standard resistance (Check for short)
      Tester Connection Switch Condition Specified Condition
      A76-32 (OPM1) - Body ground and other terminals Power switch off 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  12. CHECK HYBRID VEHICLE CONTROL ECU (CHECK GND SHORT)


    1. Connect connector A76 to the hybrid vehicle control ECU.

    2. A01GW3KE11

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

      Standard resistance
      Tester Connection Switch Condition Specified Condition
      A80-6 (SI) - Body ground Power switch off 10 kΩ or higher

    NG

    REPLACE HYBRID VEHICLE CONTROL ECU Click here

    OK

  13. CHECK HYBRID VEHICLE CONTROL ECU


    1. A01GW3KE11

      Turn the power switch on (IG).

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

      Standard
      Tester Connection Switch Condition Specified Condition
      A80-6 (SI) - Body ground Power switch on (IG) Approximately 1 kHz

      Note

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

      Tech Tips

      Perform this inspection with the hybrid vehicle control ECU connectors connected.


    NG

    REPLACE HYBRID VEHICLE CONTROL ECU Click here

    OK

    REPLACE OIL PUMP MOTOR CONTROLLER Click here

  14. CHECK CONNECTOR CONNECTION CONDITION (OIL PUMP MOTOR CONTROLLER CONNECTOR)

    Note

    Before disconnecting the connectors, confirm that they are properly connected by checking that the locking claws are engaged and that the connectors do not pull out.


    1. A01H1EDE01

      Check the connections of the oil pump motor controller connectors.

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

      Tech Tips

      For connector A, when connecting it, 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

  15. CHECK IF PART IS CORRECTLY GROUNDED


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

      Standard resistance
      Tester Connection Switch Condition Specified Condition
      Oil pump motor controller - Body ground Power switch off Below 1 Ω

    NG

    REPAIR OR REPLACE OIL PUMP MOTOR CONTROLLER

    OK

  16. REPLACE OIL WITH MOTOR PUMP ASSEMBLY


    1. Replace the oil with motor pump assembly Click here.


    NEXT

  17. CLEAR DTC


    1. Select the following menu items: Powertrain / Hybrid Control / Trouble Codes.

    2. Read and record the DTCs and freeze frame data.

    3. Select the following menu items: Powertrain / Hybrid Control / Trouble Codes.

    4. Clear DTCs and freeze frame data.


    NEXT

  18. CHECK DTC OUTPUT (HV)


    1. Connect the intelligent tester to the DLC3.

    2. Turn the power switch on (IG), wait 5 seconds or more and check for DTCs.

    3. If DTCs are not output after turning the power switch on (IG), wait 5 seconds or more after ST-on and check for DTCs again (set the vehicle to ST-on after turning the power switch on (IG)).

      Tech Tips

      ST-on is a state that occurs when the READY indicator in the combination meter blinks after the power switch is pressed with the brake pedal depressed.

    4. Select the following menu items: Powertrain / Hybrid Control / Trouble Codes.

    5. Check if DTCs are output.

      Result
      Result Proceed to
      P0C29-865 is not output. A
      P0C29-865 is output. B

    B

    REPLACE OIL PUMP MOTOR CONTROLLER Click here

    A

    END

  19. CHECK NOISE CONDITIONS


    1. Check the waveform for an interruption or distortion.

      Result
      Result Proceed to
      There are no interruptions or distortions in the waveform. A
      There is an interruption or distortion in the waveform. B

    B

    CLEAR NOISE CONDITIONS

    A

    REPLACE OIL PUMP MOTOR CONTROLLER Click here