Lexus RX (RX 350L, RX450h) 2016-2023 Repair Manual: Torque Converter Clutch Pressure Control Solenoid Control Circuit Open (P275613)

Lexus RX (RX 350L, RX450h) 2016-2023 Repair Manual / Drivetrain / U881f (automatic Transmission / Transaxle) / Automatic Transaxle System / Torque Converter Clutch Pressure Control Solenoid Control Circuit Open (P275613)

DESCRIPTION

The ECM controls the shift solenoid valve SLU using a predetermined current, and performs lock-up and flex lock-up control.

DTC No.

Detection Item

DTC Detection Condition

Trouble Area

MIL

Memory

Note

P275613

Torque Converter Clutch Pressure Control Solenoid Control Circuit Open

1. Diagnosis Condition 2. Malfunction Status 3. Malfunction Time 4. Other

  • Vehicle is being driven
  • An open or short in the shift solenoid valve SLU circuit is detected.
  • 1 second
  • 1-trip detection logic
  • Shift solenoid valve SLU
  • Transmission wire
  • Harness and connector
  • ECM

Comes on

DTC stored

SAE Code:

P2759

MONITOR DESCRIPTION

When an open or short in the shift solenoid valve SLU circuit is detected, the ECM will determine that there is a malfunction, illuminate the MIL and store this DTC.

MONITOR STRATEGY

Related DTCs

P2759: Shift solenoid valve SLU/Range check

Required sensors/Components

Shift solenoid valve SLU

Frequency of operation

Continuous

Duration

1 sec.

MIL operation

Immediate

Sequence of operation

None

TYPICAL ENABLING CONDITIONS

All

The monitor will run whenever the following DTCs are not present

None

Solenoid current cut status

Not cut

Engine switch

On (IG)

Starter

OFF
Condition (A)

Battery voltage

12 V or more
Condition (B)

Battery voltage

10 V or more and less than 12 V

Target current

Less than 0.75 A
Condition (C)

Battery voltage

8 V or more

Target current

0.25 A or more

TYPICAL MALFUNCTION THRESHOLDS

When one of the following conditions is met: Condition (A), (B) or (C)

Condition (A) and (B)

Output duty cycle

100% or more
Condition (C)

Output duty cycle

0% or less

COMPONENT OPERATING RANGE

Output duty cycle

More than 3% and less than 100%

CONFIRMATION DRIVING PATTERN

CAUTION:

When performing the confirmation driving pattern, obey all speed limits and traffic laws.

HINT:

  • After repairs have been completed, clear the DTCs and then check that the vehicle has returned to normal by performing the following All Readiness check procedure.
  • When clearing the permanent DTCs, refer to the Clear Permanent DTC procedure.

    Click here

  1. Connect the Techstream to the DLC3.
  2. Turn the engine switch on (IG) and turn the Techstream on.
  3. Clear the DTCs (even if no DTCs are stored, perform the clear DTC procedure).
  4. Turn the engine switch off and wait for 2 minutes or more.
  5. Turn the engine switch on (IG) and turn the Techstream on.
  6. Start the engine.
  7. Perform the Lock-up Function inspection in Road Test. [*1]

    Click here

    HINT:

    [*1] : Normal judgment procedure.

    The normal judgment procedure is used to complete DTC judgment and also used when clearing permanent DTCs.

  8. Enter the following menus: Powertrain / Transmission / Utility / All Readiness.
  9. Input the DTC: P275613.
  10. Check the DTC judgment result.

    Techstream Display

    Description

    NORMAL
    • DTC judgment completed
    • System normal

    ABNORMAL
    • DTC judgment completed
    • System abnormal

    INCOMPLETE
    • DTC judgment not completed
    • Perform driving pattern after confirming DTC enabling conditions

    N/A
    • Unable to perform DTC judgment
    • Number of DTCs which do not fulfill DTC preconditions has reached ECU memory limit

    HINT:

    • 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.

WIRING DIAGRAM

CAUTION / NOTICE / HINT

NOTICE:

  • Perform the universal trip to clear permanent DTCs.

    Click here

  • Perform registration and/or initialization when parts related to the automatic transaxle are replaced.

    Click here

PROCEDURE

1.

CHECK HARNESS AND CONNECTOR (TRANSMISSION WIRE (SHIFT SOLENOID VALVE SLU) - ECM)

(a) Disconnect the D2 ECM connector.

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

Standard Resistance:

Tester Connection

Condition

Specified Condition

D2-76 (SLU+) - D2-61 (SLU-)

20°C (68°F)

5.0 to 5.6 Ω

D2-76 (SLU+) or D2-61 (SLU-) - Body ground and other terminals

Always

10 kΩ or higher
NG

GO TO STEP 3

OK

2.

REPLACE ECM

(a) Replace the ECM.

Click here

NEXT

PERFORM A/T CODE REGISTRATION

3.

CHECK HARNESS AND CONNECTOR (TRANSMISSION WIRE - ECM)

(a) Disconnect the D56 transmission wire connector.

(b) Disconnect the D2 ECM connector.

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

Standard Resistance:

Tester Connection

Condition

Specified Condition

D56-13 (SLU+) - D2-76 (SLU+)

Always

Below 1 Ω

D56-14 (SLU-) - D2-61 (SLU-)

Always

Below 1 Ω

D56-13 (SLU+) or D2-76 (SLU+) - Body ground and other terminals

Always

10 kΩ or higher

D56-14 (SLU-) or D2-61 (SLU-) - Body ground and other terminals

Always

10 kΩ or higher
NG

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

4.

INSPECT SHIFT SOLENOID VALVE SLU

(a) Remove the shift solenoid valve SLU.

Click here

*a

Component without harness connected

(Shift Solenoid Valve SLU)

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

Standard Resistance:

Tester Connection

Condition

Specified Condition

Shift solenoid valve SLU connector terminal 1 - terminal 2

20°C (68°F)

5.0 to 5.6 Ω

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

OK:

Valve moves and makes operating sound.

OK

REPAIR OR REPLACE TRANSMISSION WIRE

NG

REPLACE SHIFT SOLENOID VALVE SLU

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