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 power management control ECU. The controller also outputs the oil pump motor status as a signal to the power management control ECU.

A000PN2E02
DTC No. INF Code DTC Detection Condition Trouble Area
P0C29 865

The power management 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.

  • Power management control ECU

  • Oil pump motor controller

  • Oil with motor pump assembly

  • Wire harness or connector

  • Auxiliary battery

  • Oil pump motor controller bracket

WIRING DIAGRAM

Refer to the wiring diagram for DTC P0731-871 Click here.

Refer to the wiring diagram for DTC P0867-882 Click here.

PROCEDURE


  1. CHECK FREEZE FRAME DATA (AUXILIARY BATTERY VOLTAGE)


    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. Read the freeze frame data (auxiliary battery voltage (+B)) of DTC P0C29-865.

      OK
      +B is 10 V or more.

    5. Turn the power switch off.


    NG

    CHECK AUXILIARY BATTERY Click here

    OK

  2. CLEAR DTC


    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. Read and record the DTCs and freeze frame data.

    5. Clear DTCs and freeze frame data.

    6. Turn the power switch off.


    NEXT

  3. CHECK DTC OUTPUT (HYBRID CONTROL)


    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)).

      Result
      Result Proceed to
      The DTC is output several seconds (approximately 5 seconds) after the power switch is turned on (IG). (SIG 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

      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.

    3. Turn the power switch off.


    B

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

    C

    CHECK FOR INTERMITTENT PROBLEMS Click here

    A

  4. CHECK POWER MANAGEMENT CONTROL ECU (CHECK WAVEFORM)


    1. A000R2JE02
      Text in Illustration
      *a

      Component with harness connected

      (Power Management Control ECU)

      Connect an oscilloscope to the power management control ECU terminals specified in the table below, and measure the waveform.

      Item Contents
      Terminal A35-16 (TPM1) - N91-6 (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

    2. Turn the power switch off.


    B

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

    C

    CHECK NOISE CONDITIONS Click here

    A

  5. CHECK HARNESS AND CONNECTOR (POWER MANAGEMENT CONTROL ECU - OIL PUMP MOTOR CONTROLLER)


    1. A000R09E02
      Text in Illustration
      *a

      Rear view of wire harness connector

      (to Power Management Control ECU)
      *b

      Front view of wire harness connector

      (to Oil Pump Motor Controller)

      Disconnect the connector from the power management control ECU.

    2. Disconnect the connector from the oil pump motor controller.

    3. Turn the power switch on (IG).

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

      Standard Voltage
      Tester Connection Switch Condition Specified Condition
      A35-16 (TPM1) or A44-6 (SIG) - Body ground Power switch on (IG) Below 1 V

      Note

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

    5. Turn the power switch off.

    6. Connect the power management control ECU connector.

    7. Connect the oil pump motor controller connector.


    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  6. CHECK POWER MANAGEMENT CONTROL ECU (CHECK +B SHORT)


    1. A000SIFE02
      Text in Illustration
      *a

      Front view of wire harness connector

      (to Oil Pump Motor Controller)

      Disconnect the connector from the oil pump motor controller.

    2. Turn the power switch on (IG).

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

      Standard Voltage
      Tester Connection Switch Condition Specified Condition
      A44-6 (SIG) - 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.

    4. Turn the power switch off.

    5. Connect the oil pump motor controller connector.


    NG

    REPLACE POWER MANAGEMENT CONTROL ECU Click here

    OK

  7. CHECK POWER MANAGEMENT CONTROL ECU


    1. A000SIFE02
      Text in Illustration
      *a

      Front view of wire harness connector

      (to Oil Pump Motor Controller)

      Disconnect the connector from the oil pump motor controller.

    2. Turn the power switch on (IG).

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

      Standard Frequency
      Tester Connection Switch Condition Specified Condition
      A44-6 (SIG) - 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 power management control ECU connectors connected.

    4. Turn the power switch off.

    5. Connect the oil pump motor controller connector.


    OK

    REPLACE OIL PUMP MOTOR CONTROLLER Click here

    NG

    REPLACE POWER MANAGEMENT CONTROL ECU Click here

  8. 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 cannot be pulled out.


    1. A000O14

      Check the connections of the oil pump motor controller connectors Click here.

      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

  9. CHECK CONNECTOR CONNECTION CONDITION (POWER MANAGEMENT CONTROL ECU CONNECTOR)


    1. B002B9CE01
      Text in Illustration
      *A for LHD
      *B for RHD

      Check the connector connections and contact pressure of the relevant terminals for the power management control ECU connectors Click here.

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

    NG

    CONNECT SECURELY

    OK

  10. CHECK HARNESS AND CONNECTOR (POWER MANAGEMENT CONTROL ECU - OIL PUMP MOTOR CONTROLLER)


    1. A000R09E02
      Text in Illustration
      *a

      Rear view of wire harness connector

      (to Power Management Control ECU)
      *b

      Front view of wire harness connector

      (to Oil Pump Motor Controller)

      Disconnect the connector from the power management control ECU.

    2. Disconnect the connector from the oil pump motor controller.

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

      Standard Resistance
      Tester Connection Switch Condition Specified Condition
      A35-16 (TPM1) - A44-6 (SIG) Power switch off Below 1 Ω
      A35-16 (TPM1) - Body ground and other terminals Power switch off 10 kΩ or higher

    4. Connect the power management control ECU connector.

    5. Connect the oil pump motor controller connector.


    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  11. CHECK POWER MANAGEMENT CONTROL ECU (CHECK GND SHORT)


    1. A000SIFE02
      Text in Illustration
      *a

      Front view of wire harness connector

      (to Oil Pump Motor Controller)

      Disconnect the connector from the oil pump motor controller.

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

      Standard Resistance
      Tester Connection Switch Condition Specified Condition
      A44-6 (SIG) - Body ground Power switch off 10 kΩ or higher

    3. Connect the oil pump motor controller connector.


    NG

    REPLACE POWER MANAGEMENT CONTROL ECU Click here

    OK

  12. CHECK POWER MANAGEMENT CONTROL ECU


    1. A000SIFE02
      Text in Illustration
      *a

      Front view of wire harness connector

      (to Oil Pump Motor Controller)

      Disconnect the connector from the oil pump motor controller.

    2. Turn the power switch on (IG).

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

      Standard Frequency
      Tester Connection Condition Specified Condition
      A44-6 (SIG) - 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 power management control ECU connectors connected.

    4. Turn the power switch off.

    5. Connect the oil pump motor controller connector.


    OK

    REPLACE OIL PUMP MOTOR CONTROLLER Click here

    NG

    REPLACE POWER MANAGEMENT CONTROL ECU Click here

  13. 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 cannot be pulled out.


    1. A000O14

      Check the connections of the oil pump motor controller connectors Click here.

      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

  14. 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 BRACKET

    OK

  15. REPLACE OIL WITH MOTOR PUMP ASSEMBLY

    Click here


    NEXT

  16. CLEAR DTC


    NEXT

  17. CHECK DTC OUTPUT (HYBRID CONTROL)


    1. Connect the GTS 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. Enter the following menus: 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

    6. Turn the power switch off.


    A

    END

    B

    REPLACE OIL PUMP MOTOR CONTROLLER Click here

  18. 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

    A

    REPLACE OIL PUMP MOTOR CONTROLLER Click here

    B

    ELIMINATE CAUSE OF NOISE