HYBRID CONTROL SYSTEM, Diagnostic DTC:P317511

DTC Code DTC Name
P317511 Oil Pump Motor Temperature Sensor Circuit Short to Ground

DTC SUMMARY

This indicates the voltage value recognized by the temperature sensor (thermistor) ECU inside the oil pump with motor assembly is abnormal. The cause of this malfunction may be one of the following:


DESCRIPTION

The resistance of the temperature sensor (thermistor) installed in the oil pump motor changes in accordance with changes in the oil pump motor temperature. The lower the oil pump motor temperature, the higher the temperature sensor (thermistor) resistance. Conversely, the higher the temperature, the lower the resistance. The oil pump motor temperature sensor (thermistor) is connected to the hybrid vehicle control ECU assembly. A power source voltage of 5 V is supplied to the oil pump motor temperature sensor (thermistor) through terminal TOPM of the hybrid vehicle control ECU assembly. This means that resistor R in the ECU and the oil pump motor temperature sensor (thermistor) are connected in series. The voltage at terminal TOPM and the resistance value change in accordance with changes in the oil pump motor temperature.

DTC No. Detection Item DTC Detection Condition Trouble Area MIL Warning Indicate
P317511 Oil Pump Motor Temperature Sensor Circuit Short to Ground

P317515 not stored and short occurs in oil pump motor temperature sensor circuit continuously for 3 seconds or more

(1 trip detection logic)

  • Hybrid vehicle control ECU assembly

  • Oil with motor pump assembly

  • Wire harness or connector

 Does not come on

Master Warning Light:

Comes on
Related Data List
DTC No. Data List
P317511

  • Transmission Fluid Pump Motor Coil Temperature

  • Transmission Fluid Pump Motor Coil Temperature Sensor Voltage

WIRING DIAGRAM

B000QB6E05

CONFIRMATION DRIVING PATTERN

Tech Tips

After repair has been completed, clear the DTC and then check that the vehicle has returned to normal by performing the following All Readiness check procedure.

Click here


  1. Connect the GTS to the DLC3.

  2. Turn the power switch on (IG) and turn the GTS on.

  3. Clear the DTCs (even if no DTCs are stored, perform the clear DTC procedure).

  4. Turn the power switch off and wait for 2 minutes or more.

  5. Turn the power switch on (IG) and turn the GTS on.

  6. Turn the power switch on (READY) and wait for 5 seconds or more.

  7. Enter the following menus: Powertrain / Hybrid Control / Utility / All Readiness.

  8. Check the DTC judgment result.

    Tech Tips


    • If the judgment result shows NORMAL, the system is normal.

    • If the judgment result shows ABNORMAL, the system has a malfunction.

    • If the judgment result shows INCOMPLETE or N/A, perform the normal judgment procedure again.

CAUTION / NOTICE / HINT

Tech Tips

The characteristics of the oil pump motor temperature sensor resistance (reference values) are as follows:

Tester Connection Resistance Temperature
OMT - OMTG 11.94 to 12.22 kΩ 68°F (20°C)
OMT - OMTG 5.75 to 5.92 kΩ 104°F (40°C)
OMT - OMTG 1.63 to 1.71 kΩ 176°F (80°C)

PROCEDURE


  1. 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.


      Powertrain > Hybrid Control > Trouble Codes

    5. Clear the DTCs and freeze frame data.


      Powertrain > Hybrid Control > Clear DTCs

    6. Turn the power switch off.

      Result
      Proceed to
      NEXT

    NEXT

  2. READ VALUE USING GTS (OPM TEMPERATURE)


    1. Connect the GTS to the DLC3.

    2. Turn the power switch on (IG).

    3. Enter the following menus: Powertrain / Hybrid Control / Data List / OPM Temperature.

    4. Read the Data List.

      Result
      Result Proceed to
      419°F (215°C) (short to GND) A
      Approximately equal to the actual temperature B

    5. Turn the power switch off.


    B

    CHECK FOR INTERMITTENT PROBLEMS Click here

    A

  3. CHECK HARNESS AND CONNECTOR


    1. Disconnect the hybrid vehicle control ECU assembly connector.

    2. B004BBAC35
      *a

      Rear view of wire harness connector

      (to Hybrid Vehicle Control ECU Assembly)

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      A22-30 (TOPM) or A22-31 (ETOP) - Body ground and other terminals Power switch off 10 kΩ or higher
      Standard Resistance
      Tester Connection Condition Specified Condition
      A22-30 (TOPM) - A22-31 (ETOP) 68°F (20°C) 11.94 to 12.22 kΩ
      A22-30 (TOPM) - A22-31 (ETOP) 104°F (40°C) 5.75 to 5.92 kΩ
      A22-30 (TOPM) - A22-31 (ETOP) 176°F (80°C) 1.63 to 1.71 kΩ

    3. Reconnect the hybrid vehicle control ECU assembly connector.

      Result
      Proceed to
      OK
      NG

    OK

    REPLACE HYBRID VEHICLE CONTROL ECU ASSEMBLY Click here

    NG

  4. CHECK OIL WITH MOTOR PUMP ASSEMBLY (OIL PUMP MOTOR TEMPERATURE SENSOR)


    1. B000TK4

      Disconnect the oil pump motor temperature sensor connector.

    2. B000R79C08
      *1 Oil Pump Motor Temperature Sensor

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      G37-1 (OMT) - Body ground Power switch off 10 kΩ or higher

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      G37-1 (OMT) - G37-2 (OMTG) 68°F (20°C) 11.94 to 12.22 kΩ
      G37-1 (OMT) - G37-2 (OMTG) 104°F (40°C) 5.75 to 5.92 kΩ
      G37-1 (OMT) - G37-2 (OMTG) 176°F (80°C) 1.63 to 1.71 kΩ

    4. Reconnect the oil pump motor temperature sensor connector.

      Result
      Proceed to
      OK
      NG

    OK

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    NG

    REPLACE OIL WITH MOTOR PUMP ASSEMBLY Click here