HYBRID CONTROL SYSTEM, Diagnostic DTC:P27137F

DTC Code DTC Name
P27137F Pressure Control Solenoid "D" Actuator Stuck Off

DTC SUMMARY


  1. MALFUNCTION DESCRIPTION

    This indicates that a mechanical malfunction has occurred inside the hybrid transmission.

    The cause of this DTC may be one of the following.


    • Valve stuck inside transmission valve body (jamming due to foreign matter, etc.)

    • Damage inside transmission due to above valve becoming stuck

    • Oil pump motor lock (jamming due to foreign matter, etc.)

DESCRIPTION

Based on signals from the motor resolver, transmission revolution sensor (SP2) and accelerator position sensor, 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.

In addition, when the oil pump with motor assembly does not operate, line pressure is not generated. As a result, this DTC may be output.

Note

This DTC is output based on the mechanical gear position inside the transmission. Therefore, check the "Current Calculated Gear Position" Data List item.

Tech Tips

If the input torque is high for all gear positions, clutch slipping may occur.

DTC No. Detection Item DTC Detection Condition Trouble Area MIL Warning Indicate
P27137F Pressure Control Solenoid "D" Actuator Stuck Off

While driving with the gear position in D, M or R, the revolution speed indicated by the transmission input shaft revolutions (NT) is higher than during normal operation with respect to the rotation speed indicated by the transmission output shaft revolutions (SP2) at all gears.

(2-trip detection logic)

  • Solenoid (SC1) valve

  • Solenoid (SC2) valve

  • Solenoid (SLT) valve

  • Solenoid (SL1) valve

  • Solenoid (SL2) valve

  • Solenoid (SL3) valve

  • Solenoid (SL4) valve

  • Transmission valve body assembly

  • Hybrid vehicle transmission assembly

  • Oil with motor pump assembly

  • Wire harness or connector

  • OIL PMP relay

  • Fusible link (OIL PMP)

 Comes on

Master Warning Light:

Comes on
Related Data List
DTC No. Data List
P27137F

  • Current Calculated Gear Position

  • Output Shaft Revolution (Transmission)

  • Motor Revolution
Related Active Test
DTC No. Active Test
P27137F

  • Solenoid (SLT)*1

  • Solenoid (SL1)*1

  • Solenoid (SL2)*1

  • Solenoid (SL3)*1

  • Solenoid (SL4)*1

  • Solenoid (SC1)*1

  • Solenoid (SC2)*1

  • Control the Transmission Oil Pump*2
*1: When the solenoid is malfunctioning, it may not turn on and off according to commands from the GTS.
*2: When the motor is malfunctioning, a deviation may occur between the GTS motor speed command and the actual motor speed.

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 (READY).

  6. With the brake pedal depressed, move the shift lever to select shift position D.

  7. With the vehicle stopped, start off and drive the vehicle for a few seconds with the accelerator pedal opening angle at 30% or more (drive at a constant speed so that the value of the "Current Calculated Gear Position" Data List does not change.)

    CAUTION:

    Strictly observe posted speed limits, traffic laws and road conditions when performing this test.

    Tech Tips


    • After shifting, continue to drive for a few seconds.

    • If the Data List updates slowly, perform measurement after selecting only the "Current Calculated Gear Position", "Output Shaft Revolution (Transmission)", "Input Shaft Revolution (Transmission)", "Motor Revolution", "Vehicle Speed" and "Accelerator Position" items.

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

  9. 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.

PROCEDURE


  1. CHECK DTC OUTPUT


    1. Connect the GTS to the DLC3.

    2. Turn the power switch on (IG).

    3. Turn the GTS on.

    4. Enter the following menus: Powertrain / Transmission / Trouble Codes.


      Powertrain > Transmission > Trouble Codes

    5. Read the DTCs using the GTS.

      Result
      Result Proceed to
      Only DTC P27137F or one of the following P07457F, P076A71, P07757F, P07957F, P08CC71, P279762 or P28077F are output A
      Other DTCs are output B

    6. Turn the power switch off.


    B

    GO TO DTC CHART Click here

    A

  2. CHECK OIL PUMP MOTOR CIRCUIT

    Click here

    Result
    Proceed to
    NEXT

    NEXT

  3. CHECK SOLENOID VALVE CIRCUIT

    Click here

    Tech Tips

    If the "Solenoid Valve Circuit" inspection results are normal, perform the next step.

    Result
    Proceed to
    NEXT

    NEXT

    REPAIR OR REPLACE HYBRID VEHICLE TRANSMISSION ASSEMBLY Click here