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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 P2756-13: Torque Converter Clutch Pressure Control Solenoid Control Circuit Open [10/2014 - ] >> Procedure

DTC P2756-13: Torque Converter Clutch Pressure Control Solenoid Control Circuit Open [10/2014 - ]: Procedure

WARNING: This page is about a different variant/trim than selected.
  1. CHECK HARNESS AND CONNECTOR (SHIFT SOLENOID VALVE SLU CIRCUIT) 
    1. Disconnect the ECM connector.
      GTY501955Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Front view of wire harness connector
      (to ECM)
    2. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      C20-3 (SLU+) - C20-2 (SLU-) 20°C (68°F) 5.0 to 5.6 Ω
      C20-3 (SLU+) - Body ground and other terminals Always 10 kΩ or higher
      C20-2 (SLU-) - Body ground and other terminals Always 10 kΩ or higher

      Result

      Proceed to
      OK
      NG

    Result: 

    OK 

    REPLACE ECM. Refer to  REMOVAL [10/2014 - 05/2019]  , or refer to  REMOVAL [05/2019 - ] 

    Result: 

    NG 

    See step  2

  2. CHECK HARNESS AND CONNECTOR (WIRING HARNESS CONNECTOR - ECM) 
    1. Disconnect the C21 wiring harness connector.
    2. Disconnect the C20 ECM connector.
    3. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      C21-14 (SLU+) - C20-3 (SLU+) Always Below 1 Ω
      C21-5 (SLU-) - C20-2 (SLU-) Always Below 1 Ω
      C21-14 (SLU+) or C20-3 (SLU+) - Body ground and other terminals Always 10 kΩ or higher
      C21-5 (SLU-) or C20-2 (SLU-) - Body ground and other terminals Always 10 kΩ or higher

      Result

      Proceed to
      OK
      NG

    Result: 

    NG 

    REPAIR OR REPLACE HARNESS OR CONNECTOR 

    Result: 

    OK 

    See step  3

  3. INSPECT TRANSMISSION WIRE (SHIFT SOLENOID VALVE SLU) 
    1. Remove the wiring harness connector.
      GTY520636Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Component without harness connected
      (Transmission Wire)
    2. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      A-11 (SLU+) - A-5 (SLU-) 20°C (68°F) 5.0 to 5.6 Ω
      A-11 (SLU+) - Body ground and other terminals Always 10 kΩ or higher
      A-5 (SLU-) - Body ground and other terminals Always 10 kΩ or higher

      Result

      Proceed to
      OK
      NG

    Result: 

    OK 

    REPLACE WIRING HARNESS CONNECTOR. Refer to  REMOVAL [10/2014 - 09/2015]  , or refer to  REMOVAL [09/2015 - 05/2019]  , or refer to  REMOVAL [05/2019 - ] 

    Result: 

    NG 

    See step  4

  4. INSPECT SHIFT SOLENOID VALVE SLU 
    1. Remove shift solenoid valve SLU.
      GTY368521Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *1 Shift Solenoid Valve SLU

      Refer to DISASSEMBLY [10/2014 - ]

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

      Standard Resistance

      Tester Connection Condition Specified Condition
      1 - 2 20°C (68°F) 5.0 to 5.6 Ω
    3. Apply 12 V battery voltage to the shift solenoid valve and check that the valve moves and makes an operating noise.

      OK

      Measurement Condition Specified Condition
      • Battery positive (+) with a 21 W bulb → Terminal 1
      • Battery negative (-) → Terminal 2
      		 Valve moves and makes an operating noise

      Result

      Proceed to
      OK
      NG

    Result: 

    OK 

    REPLACE TRANSMISSION WIRE. Refer to  REMOVAL [10/2014 - ] 

    Result: 

    NG 

    REPLACE SHIFT SOLENOID VALVE SLU. Refer to  DISASSEMBLY [10/2014 - ] 

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