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HYBRID CONTROL SYSTEM, Diagnostic DTC:P271313

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DTC Code DTC Name
P271313 Pressure Control Solenoid "D" Circuit Open
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DTC SUMMARY


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  1. MALFUNCTION DESCRIPTION

    The solenoid (SLT) valve is a linear solenoid that indirectly controls the line pressure.

    The current from the hybrid vehicle control ECU assembly is detected as not flowing to the solenoid (SLT) valve according to operation commands.

    The cause of this malfunction may be one of the following:


    • Open or short between solenoid (SLT) valve and hybrid vehicle control ECU assembly (If an open circuit or short circuit occurs, the hybrid vehicle control ECU assembly cuts power to the malfunctioning solenoid valve.)

    • Solenoid (SLT) valve malfunction

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DESCRIPTION

Based on signals from the accelerator position sensor and transmission revolution sensor (SP2), the hybrid vehicle control ECU assembly controls the solenoid (SLT) valve using a predetermined current. As a result, the line pressure is adjusted to a pressure that is appropriate for the throttle angle and requested torque.

DTC No. Detection Item DTC Detection Condition Trouble Area MIL Warning Indicate
P271313 Pressure Control Solenoid "D" Circuit Open

The current does not flow appropriately, even when operation commands are sent from the hybrid vehicle control ECU assembly to the solenoid (SLT) valve.

(1-trip detection logic)

  • Solenoid (SLT) valve

  • Transmission wire

  • Harness and connector

  • Hybrid vehicle control ECU assembly

 Comes on

Master Warning Light:

Comes on
Table 1. Related Data List
DTC No. Data List
P271313 Solenoid (SLT)*

Table 2. Related Active Test
DTC No. Active Test
P271313 Activate the Solenoid (SLT)
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CONFIRMATION DRIVING PATTERN

Tip:

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.

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  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 (READY) and wait for 3 seconds or more.

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

  7. Check the DTC judgment result.

    Tip:

    • 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, perform driving pattern again.

Table 3. *a Solenoid (SLT) Valve *b Transmission Wire *c Hybrid Vehicle Control ECU Assembly
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WIRING DIAGRAM

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PROCEDURE


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    CHECK HARNESS AND CONNECTOR (TRANSMISSION WIRE (SOLENOID (SLT) VALVE) - HYBRID VEHICLE CONTROL ECU ASSEMBLY)


    1. B004YO1C58
      *a

      Rear view of wire harness connector

      (to Hybrid Vehicle Control ECU Assembly)

      Disconnect the A77 hybrid vehicle control ECU assembly connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      A77-13 (SLT+) - A77-12 (SLT-) 20°C (68°F) 5.0 to 5.6 Ω
      A77-13 (SLT+) or A77-12 (SLT-) - Body ground Always 10 kΩ or higher

    3. Reconnect the A77 hybrid vehicle control ECU assembly connector.

      Result
      Proceed to
      OK
      NG

  2. Click here

    CHECK HARNESS AND CONNECTOR (TRANSMISSION WIRE - HYBRID VEHICLE CONTROL ECU ASSEMBLY)


    1. B004RBIC25
      *a

      Front view of wire harness connector

      (to Transmission Wire)
      *b

      Rear view of wire harness connector

      (to Hybrid Vehicle Control ECU Assembly)

      Disconnect the D8 transmission wire connector.

    2. Disconnect the A77 hybrid vehicle control ECU assembly connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      D8-5 (SLT+) - A77-13 (SLT+) Always Below 1 Ω
      D8-12 (SLT-) - A77-12 (SLT-) Always Below 1 Ω
      D8-5 (SLT+) or A77-13 (SLT+) - Body ground Always 10 kΩ or higher
      D8-12 (SLT-) or A77-12 (SLT-) - Body ground Always 10 kΩ or higher

    4. Reconnect the A77 hybrid vehicle control ECU assembly connector.

    5. Reconnect the D8 transmission wire connector.

      Result
      Proceed to
      OK
      NG

    • OKClick here
    • NG

      REPAIR OR REPLACE HARNESS OR CONNECTOR (TRANSMISSION WIRE - ECM)

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    INSPECT SOLENOID (SLT) VALVE


    1. B004UU3C34
      *a

      Component without harness connected

      (Solenoid (SLT) Valve)

      Remove the solenoid (SLT) valve.

      for 2WD:

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      for AWD:

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      Terminal 1 of the solenoid (SLT) valve - terminal 2 20°C (68°F) 5.0 to 5.6 Ω

    3. Connect a positive (+) lead from the battery with a 21 W bulb to terminal 1 and a negative (-) lead to terminal 2 of the solenoid valve connector. Check that the valve moves and makes an operating sound.

      OK
      Valve moves and makes an operating sound.

    4. Install the solenoid (SLT) valve.

      Result
      Proceed to
      OK
      NG

    • OK

      REPAIR OR REPLACE TRANSMISSION WIRE for 2WD:

      REPAIR OR REPLACE TRANSMISSION WIREClick here

      REPAIR OR REPLACE TRANSMISSION WIRE for AWD:

      REPAIR OR REPLACE TRANSMISSION WIREClick here

    • NG

      REPLACE SOLENOID (SLT) VALVE for 2WD:

      REPLACE SOLENOID (SLT) VALVEClick here

      REPLACE SOLENOID (SLT) VALVE for AWD:

      REPLACE SOLENOID (SLT) VALVEClick here