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Home >> Toyota >> 2019 >> Sequoia SR5, 4WD >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 4 (Automatic Transmission (Ab60E) - Diagnostic Codes (2 Of 2) & Circuit Tests) >> Automatic Transmission System >> DTC P0894: Transmission Component Slipping; DTC P2714: Pressure Control Solenoid "D" Performance (Shift Solenoid Valve SLT) [08/2017 - 08/2019] >> Procedure

DTC P0894: Transmission Component Slipping; DTC P2714: Pressure Control Solenoid "D" Performance (Shift Solenoid Valve SLT) [08/2017 - 08/2019]: Procedure

WARNING: This page is about a different variant/trim than selected.
  1. CHECK DTC OUTPUT (IN ADDITION TO DTCS P0894 AND P2714) 
    1. Connect the Techstream to the DLC3.
    2. Turn the ignition switch to ON.
    3. Turn the Techstream on.
    4. Enter the following menus: Powertrain / Engine and ECT / Trouble Codes.
    5. Read the DTCs using the Techstream.
      RESULT

      Result Proceed to
      • Only P0894 is output
      • Only P0894 and P2714 are output
      		 A
      P0894, P2714 and other DTCs are output B

      HINT: 

      If any other codes besides P0894 and P2714 are output, perform troubleshooting for those DTCs first.

    Result: 

    B 

    GO TO DTC CHART 

    (Refer to DIAGNOSTIC TROUBLE CODE CHART [08/2017 - 08/2019] )

    Result: 

    A 

    See step  2

  2. PERFORM ACTIVE TEST USING TECHSTREAM (SHIFT SOLENOID VALVE SLT) 
    NOTE:
    • Perform the test at the normal operating ATF temperature: 50 to 80°C (122 to 176°F).
    • Be careful to prevent SST hose from interfering with the exhaust pipe.
    • Perform the test with the A/C OFF.

    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. Remove the test plug on the transmission case center right side and connect SST.
      GTY610580Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      • SST: 09993-19015 
        1. 09993-00010
        2. 09993-00040
    2. Connect the Techstream to the DLC3.
    3. Start the engine and warm it up.
    4. Measure the line pressure with SST.
    5. Turn the Techstream on.
    6. Enter the following menus: Powertrain / Engine and ECT / Active Test.
    7. According to the display on the Techstream, perform the Active Test.
    8. Measure the line pressure.
      ENGINE AND ECT

      Tester Display Test Part Control Range Diagnostic Note
      Activate the Solenoid (SLT)* Operate the shift solenoid SLT and raise line pressure ON or OFF
      HINT: 
      • OFF: Line pressure up (when Active Test "Activate the Solenoid (SLT)" is performed, ECM commands SLT solenoid to turn OFF)
      • ON: No action (normal operation)
      		 [Vehicle Condition]
      • Vehicle stopped
      • Engine idling

      HINT: 

      *: Activate the Solenoid (SLT) in the Active Test is performed to check the line pressure changes by connecting SST to the automatic transmission, which is used in the Hydraulic Test (Refer to HYDRAULIC TEST [08/2015 - 08/2019] ) as well. Please note that the pressure values in the Active Test and Hydraulic Test are different.

      OK

      The line pressure changes as specified when performing the Active Test.

    Result: 

    NG 

    See step  9

    Result: 

    OK 

    See step  3

  3. PERFORM ACTIVE TEST USING TECHSTREAM (RUNNING 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. Connect the Techstream to the DLC3.
    2. Clear the DTC (Refer to DTC CHECK / CLEAR [08/2015 - 08/2019] ).
    3. Enter the following menus: Powertrain / Engine and ECT / Active Test.
    4. According to the display on the Techstream, perform the Active Test.

      HINT: 

      While driving, the shift position can be forcibly changed with the Techstream.

      ENGINE AND ECT

      Tester Display Test Part Control Range Diagnostic Note
      Control the Shift Position Operate shift solenoid valve and set each shift position by yourself
      • Press "→" button: Shift up
      • Press "←" button: Shift down
      		 Possible to check operation of shift solenoid valves
      [Vehicle Condition]
      50 km/h (30 mph) or less

      HINT: 

      • This test can be conducted when the vehicle speed is 50 km/h (30 mph) or less.
      • The 4th to 5th and 5th to 6th up-shift must be performed with the accelerator pedal released.
      • The 6th to 5th and 5th to 4th down-shift must be performed with the accelerator pedal released.
      • Do not operate the accelerator pedal for at least 2 seconds after shifting and do not shift successively.
      • The shift position commanded by the ECM is shown in the Data List display on the Techstream.
    5. Compare the ECM gear shift command and the actual gear position.
      RESULT

      ECM gear shift command 1st 2nd 3rd 4th 5th 6th Proceed to
      Actual gear position under malfunction Shift solenoid S1 Stuck ON*1 2nd 2nd 3rd 4th 5th 6th A
      Stuck OFF 1st 1st 3rd 4th 5th N*2
      Shift solenoid S2 Stuck ON 1st 2nd 2nd 4th 6th 6th B
      Stuck OFF 3rd 3rd 3rd 4th 5th 5th
      Shift solenoid S3 Stuck ON 1st 2nd 3rd 3rd N*2 N*2 C
      Stuck OFF 3rd 4th 4th 4th 5th 6th
      Shift solenoid S4 Stuck ON*3 1st 2nd 3rd 4th 5th 6th D
      Stuck OFF 1st 2nd 3rd 4th 4th 4th
      Actual gear position when normal 1st 2nd 3rd 4th 5th 6th E

      HINT: 

      • *1: When shift solenoid S1 is stuck ON, the vehicle cannot drive in reverse.
      • *2: Neutral
      • *3: When shift solenoid S4 is stuck ON, gear shifting is normal.

    Result: 

    B 

    See step  5

    Result: 

    C 

    See step  6

    Result: 

    D 

    See step  7

    Result: 

    E 

    See step  9

    Result: 

    A 

    See step  4

  4. INSPECT SHIFT SOLENOID VALVE S1 
    1. Remove the shift solenoid valve S1.
      GTY611195Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      Shift solenoid valve S1 connector terminal - Shift solenoid valve S1 body 20°C (68°F) 11 to 15 Ω
    3. Connect the battery positive (+) lead to the terminal of the solenoid valve connector, and the negative (-) lead to the solenoid valve body. Then check that the valve moves and makes an operating noise.

      OK

      Valve moves and makes an operating noise.

      RESULT

      Result Proceed to
      NG A
      OK B

    Result: 

    A 

    REPLACE SHIFT SOLENOID VALVE S1 

    (Refer to PROCEDURE - Step 6 )

    Result: 

    B 

    See step  10

  5. INSPECT SHIFT SOLENOID VALVE S2 
    1. Remove the shift solenoid valve S2.
      GTY605385Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      Shift solenoid valve S2 connector terminal - Shift solenoid valve S2 body 20°C (68°F) 11 to 15 Ω
    3. Connect the battery's positive (+) lead to the terminal of the solenoid valve connector, and the negative (-) lead to the solenoid valve body. Then check that the valve moves and makes an operating noise.

      OK

      Valve moves and makes an operating noise.

      RESULT

      Result Proceed to
      NG A
      OK B

    Result: 

    A 

    REPLACE SHIFT SOLENOID VALVE S2 

    (Refer to PROCEDURE - Step 8 )

    Result: 

    B 

    See step  10

  6. INSPECT SHIFT SOLENOID VALVE S3 
    1. Remove the shift solenoid valve S3.
      GTY607408Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      Shift solenoid valve S3 connector terminal - Shift solenoid valve S3 body 20°C (68°F) 11 to 15 Ω
    3. Connect the battery positive (+) lead to the terminal of the solenoid valve connector, and the negative (-) lead to the solenoid valve body. Then check that the valve moves and makes an operating noise.

      OK

      Valve moves and makes an operating noise.

      RESULT

      Result Proceed to
      NG A
      OK B

    Result: 

    A 

    REPLACE SHIFT SOLENOID VALVE S3 

    (Refer to PROCEDURE - Step 9 )

    Result: 

    B 

    See step  10

  7. INSPECT SHIFT SOLENOID VALVE S4 
    1. Remove the shift solenoid valve S4.
      GTY603573Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      Shift solenoid valve S4 connector terminal - Shift solenoid valve S4 body 20°C (68°F) 11 to 15 Ω
    3. Connect the battery positive (+) lead to the terminal of the solenoid valve connector, and the negative (-) lead to the solenoid valve body. Then check that the valve moves and makes an operating noise.

      OK

      Valve moves and makes an operating noise.

    Result: 

    NG 

    REPLACE SHIFT SOLENOID VALVE S4 

    (Refer to PROCEDURE - Step 7 )

    Result: 

    OK 

    See step  8

  8. INSPECT SHIFT SOLENOID VALVE SL2 
    1. Remove the shift solenoid valve SL2.
      GTY558382Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    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. Connect the battery positive (+) lead with a 21 W bulb to terminal 1 and the negative (-) lead to terminal 2 of the solenoid valve connector. Then check that the valve moves and makes an operating noise.

      OK

      Valve moves and makes an operating noise.

      RESULT

      Result Proceed to
      NG A
      OK B

    Result: 

    A 

    REPLACE SHIFT SOLENOID VALVE SL2 

    (Refer to PROCEDURE - Step 1 )

    Result: 

    B 

    See step  10

  9. INSPECT SHIFT SOLENOID VALVE SLT 
    1. Remove the shift solenoid valve SLT.
      GTY603726Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    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. Connect the battery positive (+) lead with a 21 W bulb to terminal 2 and the negative (-) lead to terminal 1 of the solenoid valve connector. Then check that the valve moves and makes an operating noise.

      OK

      Valve moves and makes an operating noise.

    Result: 

    NG 

    REPLACE SHIFT SOLENOID VALVE SLT 

    (Refer to PROCEDURE - Step 3 )

    Result: 

    OK 

    See step  10

  10. INSPECT TRANSMISSION VALVE BODY ASSEMBLY 
    1. Check the transmission valve body assembly.

      OK

      There are no foreign objects on each valve.

    Result: 

    NG 

    REPAIR OR REPLACE TRANSMISSION VALVE BODY ASSEMBLY 

    (Refer to REMOVAL [08/2015 - ] )

    Result: 

    OK 

    See step  11

  11. INSPECT TORQUE CONVERTER ASSEMBLY 
    1. Check the torque converter assembly (Refer to INSPECTION [08/2015 - ] ).

      OK

      The torque converter assembly operates normally.

    Result: 

    OK 

    REPAIR OR REPLACE AUTOMATIC TRANSMISSION ASSEMBLY 

    (Refer to REMOVAL [08/2015 - ] )

    Result: 

    NG 

    REPLACE TORQUE CONVERTER ASSEMBLY 

    (Refer to REMOVAL [08/2015 - ] )

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