Lexus RX (RX 350L, RX450h) 2016-2022 Repair Manual: Pressure Control Solenoid "D" Circuit Open (P271313)

DESCRIPTION

Refer to DTC P27137F.

Click here

DTC No.

Detection Item

DTC Detection Condition

Trouble Area

MIL

Memory

Note

P271313

Pressure Control Solenoid "D" Circuit Open

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

  • Engine is running
  • Shift solenoid valve SLT circuit is open or shorted
  • 1 second
  • 1-trip detection logic
  • Shift solenoid valve SLT
  • Transmission wire
  • Harness and connector
  • ECM

Comes on

DTC stored

SAE Code:

P2716

MONITOR DESCRIPTION

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

MONITOR STRATEGY

Related DTC

P2716: Shift solenoid valve SLT/Range check

Required sensors/Components

Shift solenoid valve SLT

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

Condition (D)

Battery voltage

11 V or more

Target current

0.2 A or more

TYPICAL MALFUNCTION THRESHOLDS

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

Condition (A) and (B)

Output duty cycle

100% or more

Condition (C)

Output duty cycle

0% or less

Condition (D)

Solenoid voltage monitor

No signal

COMPONENT OPERATING RANGE

Output duty cycle

More than 3% and less than 100%

Solenoid voltage monitor

Signal input

CONFIRMATION DRIVING PATTERN

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. Wait for 2 seconds or more with the engine running. [*1]

    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: P271313.
  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 SLT) - 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

D2-67 (SLT+) - D2-37 (SLT-)

20°C (68°F)

5.0 to 5.6 Ω

D2-67 (SLT+) or D2-37 (SLT-) - 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

D56-3 (SLT+) - D2-67 (SLT+)

Always

Below 1 Ω

D56-4 (SLT-) - D2-37 (SLT-)

Always

Below 1 Ω

D56-3 (SLT+) or D2-67 (SLT+) - Body ground and other terminals

Always

10 kΩ or higher

D56-4 (SLT-) or D2-37 (SLT-) - 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 SLT

(a) Remove the shift solenoid valve SLT.

Click here

*a

Component without harness connected

(Shift Solenoid Valve SLT)

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

Standard Resistance:

Tester Connection

Condition

Specified Condition

Shift solenoid valve SLT 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 an operating sound.

OK

REPAIR OR REPLACE TRANSMISSION WIRE

NG

REPLACE SHIFT SOLENOID VALVE SLT

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