HYBRID CONTROL SYSTEM, Diagnostic DTC:P2797-881

DTC Code DTC Name
P2797-881 Auxiliary Transmission Fluid Pump Control Performance

DESCRIPTION

Refer to the description for DTC P0C29-865 Click here.

DTC No. INF Code DTC Detection Condition Trouble Area
P2797 881 Difference between the oil pump rotation speed requested by the power management control ECU and the actual rotation speed exceeds a specified value constantly for a specified time.

  • Hybrid vehicle transmission assembly

  • Oil with motor pump assembly

  • Wire harness or connector

  • Power management control ECU

  • Fusible link (OIL PMP)

  • OIL PMP relay

WIRING DIAGRAM

Refer to the wiring diagram for DTC P0867-882 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 if DTCs are output.

      Result
      Result Proceed to
      P2797-881 only is output. A
      Any of the following DTCs are also output. B
      DTC No. Relevant Diagnosis
      P0C29-865 Auxiliary Transmission Fluid Pump Driver Circuit Performance
      P0C2C-888, 889 Auxiliary Transmission Fluid Pump Control Module Feedback Signal Range / Performance
      P0C2D-858 Auxiliary Transmission Fluid Pump Control Module Feedback Signal Low
      P0C2E-859 Auxiliary Transmission Fluid Pump Control Module Feedback Signal High
      P3176-863 Transmission Oil Pump Motor Coil Temperature Sensor Circuit Low
      P3177-864 Transmission Oil Pump Motor Coil Temperature Sensor Circuit High

    5. Turn the power switch off.


    B

    GO TO DTC CHART (HYBRID CONTROL SYSTEM) Click here

    A

  2. 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

  3. 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

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


    1. A000Q7BE02
      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) - Body ground Power switch on (IG) Below 1 V
      A35-17 (TPST) - 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. 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
      A35-17 (TPST) - A44-7 (OPST) Power switch off Below 1 Ω
      A35-16 (TPM1) - Body ground and other terminals Power switch off 10 kΩ or higher
      A35-17 (TPST) - Body ground and other terminals Power switch off 10 kΩ or higher

    7. Connect the power management control ECU connector.

    8. Connect the oil pump motor controller connector.


    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  5. CHECK FUSIBLE LINK (OIL PMP)


    1. A000QIHE01
      Text in Illustration
      *1 No. 1 Engine Room Relay Block and Junction Block Assembly
      *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 and junction block assembly.

      OK
      There is no open circuit in the fusible link (OIL PMP).

    NG

    REPLACE FUSIBLE LINK (OIL PMP)

    OK

  6. CHECK RELAY (OIL PMP)


    1. A000OCIE01
      Text in Illustration
      *1 No. 1 Engine Room Relay Block and Junction Block Assembly
      *2 OIL PMP Relay

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

    2. A000SVRE02
      Text in Illustration
      *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 is not applied between terminals 1 and 2 10 kΩ or higher
      Auxiliary battery voltage is applied between terminals 1 and 2 Below 1 Ω

    3. Install the OIL PMP relay to the No. 1 engine room relay block and junction block assembly.


    NG

    REPLACE RELAY (OIL PMP)

    OK

  7. CHECK OIL WITH MOTOR PUMP ASSEMBLY


    1. A000PLYE01
      Text in Illustration
      *a

      Front view of wire harness connector

      (to Oil Pump Motor Controller)

      Disconnect the connectors 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
      Z19-1 (W) - Body ground Power switch on (IG) Below 1 V
      Z19-2 (U) - Body ground Power switch on (IG) Below 1 V
      Z19-3 (V) - Body ground Power switch on (IG) Below 1 V
      z20-1 (OHW) - Body ground Power switch on (IG) Below 1 V
      z20-2 (OHV) - Body ground Power switch on (IG) Below 1 V
      z20-3 (OHU) - Body ground Power switch on (IG) Below 1 V
      z20-4 (OIGH) - Body ground Power switch on (IG) Below 1 V
      z20-5 (OHG) - Body ground Power switch on (IG) Below 1 V

      Note

      Turning the power switch on (IG) with the oil pump motor controller connectors 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 Switch Condition Specified Condition
      z19-1 (W) - z19-2 (U) Power switch off Below 1 Ω
      z19-1 (W) - z19-3 (V) Power switch off Below 1 Ω
      z19-1 (W) - Body ground Power switch off 10 kΩ or higher
      z19-2 (U) - Body ground Power switch off 10 kΩ or higher
      z19-3 (V) - Body ground Power switch off 10 kΩ or higher
      z20-1 (OHW) - Body ground Power switch off 10 kΩ or higher
      z20-2 (OHV) - Body ground Power switch off 10 kΩ or higher
      z20-3 (OHU) - Body ground Power switch off 10 kΩ or higher
      z20-4 (OIGH) - Body ground Power switch off 10 kΩ or higher
      z20-5 (OHG) - Body ground Power switch off 10 kΩ or higher

    6. Connect the oil pump motor controller connector.


    NG

    REPLACE OIL WITH MOTOR PUMP ASSEMBLY Click here

    OK

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


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

    2. Turn the power switch on (IG).

    3. A000QBQE01
      Text in Illustration
      *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 Switch Condition Specified Condition
      A44-5 (+B) - Body ground Power switch on (IG) 11 to 14 V

    4. Turn the power switch off.

    5. A000OCIE01
      Text in Illustration
      *1 No. 1 Engine Room Relay Block and Junction Block Assembly
      *2 OIL PMP Relay

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

    6. A000PPFE01
      Text in Illustration
      *1 No. 1 Engine Room Relay Block and Junction Block Assembly
      *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 Switch Condition Specified Condition
      5 (OIL PMP relay) - A44-5 (+B) Power switch off Below 1 Ω
      2 (OIL PMP relay) - Body ground Power switch off Below 1 Ω
      5 (OIL PMP relay) - Body ground Power switch off 10 kΩ or higher

    7. Disconnect the connector from the power management control ECU.

      A000S4HE02
      Text in Illustration
      *1 No. 1 Engine Room Relay Block and Junction Block Assembly *2 OIL PMP Relay
      *a

      Rear view of wire harness connector

      (to Power Management Control ECU)

      		 - -

    8. Turn the power switch off.

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

      Standard Resistance
      Tester Connection Switch Condition Specified Condition
      1 (OIL PMP relay) - A35-7 (TPM2) Power switch off Below 1 Ω
      1 (OIL PMP relay) or A35-7 (TPM2) - Body ground Power switch off 10 kΩ or higher

    10. Connect the oil pump motor controller connector.

    11. Install the OIL PMP relay to the No. 1 engine room relay block and junction block assembly.

    12. Connect the power management control ECU connector.


    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  9. 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

  10. SIMULATION TEST


    1. Connect the GTS to the DLC3.

    2. Turn the power switch on (IG).

    3. Enter the following menus: Powertrain / Hybrid Control / Active Test / Activate the Oil Pump (500rpm), Activate the Oil Pump (1000rpm).

    4. Select OPM Revolution in the Data List.

    5. Perform the "Activate the Oil Pump (500rpm)" and "Activate the Oil Pump (1000rpm)" Active Tests.

      OK
      For both the "Activate the Oil Pump (500rpm)" and "Activate the Oil Pump (1000rpm)" Active Tests, the value of "OPM Revolution" is almost the same as the corresponding Active Test speed.

      Note

      Make sure that the auxiliary battery is not discharged.

    6. Turn the power switch off.


    NG

    REPLACE OIL WITH MOTOR PUMP ASSEMBLY Click here

    OK

  11. CHECK FOR INTERMITTENT PROBLEMS

    Click here


    NG

    REPAIR OR REPLACE MALFUNCTIONING PARTS, COMPONENT AND AREA

    OK

  12. CHECK FLUID LEAKS


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

      OK
      There are no fluid leaks.

    OK

    REPLACE POWER MANAGEMENT CONTROL ECU Click here

    NG

    REPAIR OR REPLACE HYBRID VEHICLE TRANSMISSION ASSEMBLY Click here