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Home >> Lexus >> 2015 >> NX 200t Base, AWD >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 5 (Automatic Transmission (U661E) - Diagnostic Codes (2 Of 2) & Circuit Tests) >> Automatic Transaxle System >> DTC P2756-7F: Torque Converter Clutch Pressure Control Solenoid Control Actuator Stuck Off [10/2014 - 07/2020] >> Caution / Notice / Hint

Caution / Notice / Hint

WARNING: This page is about a different variant/trim than selected.
NOTE:
  1. ACTIVE TEST 

    HINT: 

    Using the Techstream to perform Active Tests allows relays, VSVs, actuators and other items to be operated without removing any parts. This non-intrusive functional inspection can be very useful because intermittent operation may be discovered before parts or wiring is disturbed. Performing Active Tests early in troubleshooting is one way to save diagnostic time. Data List information can be displayed while performing Active Tests.

    1. Warm up the engine.
    2. Turn the engine switch off.
    3. Connect the Techstream to the DLC3.
    4. Turn the engine switch on (IG).
    5. Turn the Techstream on.
    6. Enter the following menus: Powertrain / Transmission / Active Test.
    7. According to the display on the Techstream, perform the Active Test.

      Powertrain > Transmission > Active Test 

      Tester Display Measurement Item Control Range Diagnostic Note
      Activate the Lock Up Solenoid Controls the shift solenoid SLU and SL to set the automatic transaxle to the lock-up condition. ON/OFF
      Start/Stop
      Can be used to check SLU and SL solenoid operation.
      [Vehicle Condition]
      • Vehicle speed: 70 km/h (44 mph) or more
      • Gear: Highest gear
      • Throttle valve opening angle: 20% or more

      Powertrain > Transmission > Active Test 

      Tester Display
      Activate the Lock Up Solenoid

      HINT: 

      1. This test can be conducted when the vehicle speed is 70 km/h (44 mph) or more.
    8. Lightly depress the accelerator pedal and check that the engine speed does not change abruptly.

      HINT: 

      • When changing the accelerator pedal opening angle while driving, if the engine speed does not change, lock-up is on.
      • Slowly release, but not fully, the accelerator pedal in order to decelerate. (Fully releasing the pedal will close the throttle valve and lock-up may be turned off.)
      Fig 1: Powertrain > Engine > Active Test
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