HYBRID CONTROL SYSTEM Oil Pump Motor Circuit

DESCRIPTION

The cause of the malfunction may be the electric oil pump motor system.

Check that there are no problems in the signal line between the oil pump motor controller and hybrid vehicle control ECU assembly and that there is no short to +B, open or short in the oil pump motor controller power source.

Related Parts Check
Area Inspection Step
Wire harness and connector between oil pump motor controller and hybrid vehicle control ECU assembly Check for open or short in wire harness and check connector connection condition 1, 2, 3
Check oil pump motor controller assembly power source system Check oil pump motor controller assembly power source system 4, 5, 6
Oil with motor pump assembly Check for open or short to +B in power supply of the oil pump with motor assembly 7
Perform Simulation Test - 8, 9, 10, 11

WIRING DIAGRAM

B000RYGE01

CAUTION / NOTICE / HINT

This procedure is referenced from the procedures for each DTC.

If the following inspection results are normal, perform the next procedure for the referenced DTC.

PROCEDURE


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

    Result
    Proceed to
    OK
    NG

    Note

    Before disconnecting the connector, confirm that it is properly connected by checking that the claws of the lock levers are engaged and that the connector cannot be pulled off.


    1. B000P4Q

      Check the connection condition of the oil pump motor controller connector.

      Click here

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

      Tech Tips

      When connecting the connector, connect it with the lock levers raised. Rotate each lock lever downward and make sure that the connector is securely connected. When a lock lever is fully lowered, a click will be heard as its claw engages. After the click is heard, pull up on the connector to confirm that it is securely connected.

      Result
      Proceed to
      OK
      NG

    NG

    CONNECT SECURELY

    OK

  2. CHECK CONNECTOR CONNECTION CONDITION (HYBRID VEHICLE CONTROL ECU ASSEMBLY CONNECTOR)

    Result
    Proceed to
    OK
    NG

    1. B004C0XC01
      *A for LHD
      *B for RHD

      Check the connector connections and contact pressure of the relevant terminals for the hybrid vehicle control ECU assembly connectors.

      Click here

      OK
      The connectors are connected securely and there are no contact pressure problems.
      Result
      Proceed to
      OK
      NG

    NG

    CONNECT SECURELY

    OK

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


    1. B000SN6C24
      *a

      Rear view of wire harness connector

      (to Hybrid Vehicle Control ECU Assembly)
      *b

      Front view of wire harness connector

      (to Oil Pump Motor Controller)

      Disconnect the hybrid vehicle control ECU assembly connector.

    2. Disconnect the oil pump motor controller connector.

    3. Turn the power switch on (IG).

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

      Standard Voltage
      Tester Connection Condition Specified Condition
      A21-33 (TPM1) - Body ground Power switch on (IG) Below 1 V
      A21-34 (TPST) - Body ground Power switch on (IG) Below 1 V

      Note

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

    5. Turn the power switch off.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      A21-33 (TPM1) - A27-6 (SIG) Power switch off Below 1 Ω
      A21-34 (TPST) - A27-7 (OPST) Power switch off Below 1 Ω
      A21-33 (TPM1) - Body ground and other terminals Power switch off 10 kΩ or higher
      A21-34 (TPST) - Body ground and other terminals Power switch off 10 kΩ or higher

    7. Reconnect the hybrid vehicle control ECU assembly connector.

    8. Reconnect the oil pump motor controller connector.

      Result
      Proceed to
      OK
      NG

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  4. CHECK FUSIBLE LINK (OIL PMP)


    1. B000SGNC01
      *1 No. 1 Engine Room Relay Block
      *2 Fusible Link (OIL PMP)

      Check if there is an open circuit in the fusible link (OIL PMP) in the No. 1 engine room relay block.

      OK
      There is no open circuit in the fusible link (OIL PMP).
      Result
      Proceed to
      OK
      NG

    NG

    REPLACE FUSIBLE LINK (OIL PMP)

    OK

  5. INSPECT RELAY (OIL PMP)


    1. B000TO6C02
      *1 No. 1 Engine Room Relay Block
      *2 OIL PMP Relay

      Remove the OIL PMP relay from the No. 1 engine room relay block.

    2. B000OVHC04
      *1 OIL PMP Relay

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      1 - 2 Always 151 to 203 Ω
      3 - 5 Auxiliary battery voltage not applied between terminals 1 and 2 10 kΩ or higher
      Auxiliary battery voltage applied between terminals 1 and 2 Below 1 Ω

    3. Install the OIL PMP relay.

      Result
      Proceed to
      OK
      NG

    NG

    REPLACE RELAY (OIL PMP)

    OK

  6. CHECK OIL PUMP MOTOR CONTROLLER (POWER SOURCE CIRCUIT)


    1. Disconnect the oil pump motor controller connector.

    2. Turn the power switch on (IG).

    3. B000TEKC22
      *a

      Front view of wire harness connector

      (to Oil Pump Motor Controller)

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

      Standard Voltage
      Tester Connection Condition Specified Condition
      A27-5 (+B) - Body ground Power switch on (IG) 11 to 14 V

    4. Turn the power switch off.

    5. B000TO6C02
      *1 No. 1 Engine Room Relay Block
      *2 OIL PMP Relay

      Remove the OIL PMP relay from the No. 1 engine room relay block.

    6. B000PX7C03
      *1 No. 1 Engine Room Relay Block
      *2 OIL PMP Relay
      *a

      Front view of wire harness connector

      (to Oil Pump Motor Controller)

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      5 - A27-5 (+B) Power switch off Below 1 Ω
      2 - Body ground Power switch off Below 1 Ω
      5 - Body ground Power switch off 10 kΩ or higher

    7. Disconnect the hybrid vehicle control ECU assembly connector.

      B000TFVC04
      *1 No. 1 Engine Room Relay Block *2 OIL PMP Relay
      *a

      Rear view of wire harness connector

      (to Hybrid Vehicle Control ECU Assembly)

      		 - -

    8. Turn the power switch off.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      1 - A21-1 (TPM2) Power switch off Below 1 Ω
      1 o A21-1 (TPM2) - Body ground Power switch off 10 kΩ or higher

    10. Reconnect the oil pump motor controller connector.

    11. Install the OIL PMP relay.

    12. Reconnect the hybrid vehicle control ECU assembly connector.

      Result
      Proceed to
      OK
      NG

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  7. CHECK OIL WITH MOTOR PUMP ASSEMBLY


    1. B000SKKC07
      *a

      Front view of wire harness connector

      (to Oil Pump Motor Controller)

      Disconnect the oil pump motor controller connector.

    2. Turn the power switch off.

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

      Standard Voltage
      Tester Connection Condition Specified Condition
      z20-1 (W) - Body ground Power switch on (IG) Below 1 V
      z20-2 (U) - Body ground Power switch on (IG) Below 1 V
      z20-3 (V) - Body ground Power switch on (IG) Below 1 V
      z21-1 (OHW) - Body ground Power switch on (IG) Below 1 V
      z21-2 (OHV) - Body ground Power switch on (IG) Below 1 V
      z21-3 (OHU) - Body ground Power switch on (IG) Below 1 V
      z21-4 (OIGH) - Body ground Power switch on (IG) Below 1 V
      z21-5 (OHG) - 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. Measure the resistance according to the value(s) in the table below.

      Standard Resistance
      Tester Connection Condition Specified Condition
      z20-1 (W) - z20-2 (U) Power switch off Below 1 Ω
      z20-1 (W) - z20-3 (V) Power switch off Below 1 Ω
      z20-1 (W) - Body ground Power switch off 10 kΩ or higher
      z20-2 (U) - Body ground Power switch off 10 kΩ or higher
      z20-3 (V) - Body ground Power switch off 10 kΩ or higher
      z21-1 (OHW) - Body ground Power switch off 10 kΩ or higher
      z21-2 (OHV) - Body ground Power switch off 10 kΩ or higher
      z21-3 (OHU) - Body ground Power switch off 10 kΩ or higher
      z21-4 (OIGH) - Body ground Power switch off 10 kΩ or higher
      z21-5 (OHG) - Body ground Power switch off 10 kΩ or higher

    6. Reconnect the oil pump motor controller connector.

      Result
      Proceed to
      OK
      NG

    NG

    REPLACE OIL WITH MOTOR PUMP ASSEMBLY Click here

    OK

  8. 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.


      Powertrain > Hybrid Control > Clear DTCs

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

    5. Clear the DTCs.

    6. Turn the power switch off.

      Result
      Proceed to
      NEXT

    NEXT

  9. SIMULATION TEST


    1. Connect the GTS to the DLC3.

    2. Turn the power switch on (IG).

    3. Enter the following menus: Powertrain / Motor Generator Control / Active Test / Control the Transmission Oil Pump.


      Powertrain > Hybrid Control > Active Test
      Tester Display
      Control the Transmission Oil Pump

    4. Select the Data List item "Transmission Fluid Pump Motor Revolution".


      Powertrain > Hybrid Control > Data List
      Tester Display
      Transmission Fluid Pump Motor Revolution

    5. Perform the Active Test.

      OK
      When the transmission oil pump Active Test is performed, the value of the Data List item "Transmission Fluid Pump Motor Revolution" is approximately the same as each commanded speed.
      Transmission Oil Pump Transmission Fluid Pump Motor Revolution
      500 rpm 400 to 700 rpm
      1000 rpm 900 to 1200 rpm

      Note

      Make sure that the auxiliary battery does not deplete.

    6. Turn the power switch off.

      Result
      Proceed to
      OK
      NG

    NG

    REPLACE OIL WITH MOTOR PUMP ASSEMBLY Click here

    OK

  10. CHECK INTERMITTENT PROBLEMS

    Click here

    Result
    Proceed to
    OK
    NG

    NG

    REPAIR OR REPLACE MALFUNCTIONING PARTS, COMPONENT AND AREA

    OK

  11. CHECK FLUID LEAKS


    1. Check the hybrid vehicle transmission assembly for fluid leaks.

      OK
      No fluid leaks.
      Result
      Proceed to
      OK
      NG

    OK

    OIL PUMP MOTOR CIRCUIT NORMAL (PERFORM NEXT STEP FOR REFERENCED DTC)

    NG

    REPLACE HYBRID VEHICLE TRANSMISSION ASSEMBLY Click here