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AUTOMATIC TRANSMISSION SYSTEM(for 1GR-FE), Diagnostic DTC:P2714

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DTC Code DTC Name
P2714 Pressure Control Solenoid "D" Performance (Shift Solenoid Valve SLT)
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DESCRIPTION

The shift solenoid valve SLT controls the transmission line pressure for smooth transmission operation based on signals from the throttle position sensor and the vehicle speed sensor. The ECM adjusts the current of the SLT solenoid valve to control the hydraulic line pressure coming from the primary regulator valve. Appropriate line pressure assures smooth shifting with varying engine outputs.

DTC Code DTC Detection Condition Trouble Area
P2714 The ECM detects a malfunction of the SLT shift solenoid valve (ON side) according to the revolution difference of the turbine and output shaft, and also by the oil pressure (2 trip detection logic*1, 1 trip detection logic*2).

  • Shift solenoid valve SLT remains open or closed

  • Shift solenoid valve S1, S2, SR, SL1 or SL2 remains open or closed

  • 1-2 shift valve is stuck

  • Valve body is blocked

  • Torque convertor clutch

  • Automatic transmission (clutch, brake or gear, etc.)

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MONITOR DESCRIPTION

The ECM calculates the amount of heat absorbed by the friction material based on the difference in revolution (clutch slippage) between the turbine and output shaft. The ECM turns on the MIL and stores this DTC when the amount of heat absorption exceeds the specified value.

There are two reasons that make the revolution different.


Note:

If you continue driving under these conditions, the clutch will burn out and the vehicle will no longer be drivable.

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PROCEDURE


  1. Click here

    CHECK DTC OUTPUT (IN ADDITION TO DTC P2714)


    1. Connect the intelligent tester to the DLC3.

    2. Turn the engine switch on (IG).

    3. Turn the intelligent tester on.

    4. Enter the following menus: Powertrain / Engine and ECT / DTC.

    5. Read the DTCs using the tester.

      Table 1. Result
      Result Proceed to
      Only P2714 is output A
      P2714 and other DTCs are output B
      Tip:

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


  2. Click here

    PERFORM ACTIVE TEST USING INTELLIGENT TESTER (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 turned off.

    Tip:

    Using the intelligent tester 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. A01X1ABE02
      Table 2.
      *1 Test Plug

      Remove the test plug on the transmission case center right side and connect SST.

      09993-19015 09993-00010 09993-00040

    2. Connect the intelligent tester to the DLC3.

    3. Start the engine and warm it up.

    4. Measure the line pressure with SST.

    5. Turn the intelligent tester on.

    6. Enter the following menus: Powertrain / Engine and ECT / Active Test.

    7. According to the display on the tester, perform the Active Test.

    8. Measure the line pressure.

      Table 3. Engine and ECT
      Tester Display Test Part Control Range Diagnostic Note
      Activate the Solenoid (SLT)* Operate shift solenoid valve SLT and raise line pressure

      ON or OFF

      Tip:

      • OFF: Line pressure up (when Active Test "Activate the Solenoid (SLT)" is performed, ECM commands shift solenoid valve SLT to turn OFF)

      • ON: No action (normal operation)

      [Vehicle Condition]


      • The vehicle is stopped.

      • The engine is idling.
      Tip:

      *: 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 (Click here) as well. 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.

  3. Click here

    PERFORM ACTIVE TEST USING INTELLIGENT TESTER (RUNNING TEST)

    CAUTION:

    This test should always be performed with at least 2 people.

    Note:

    • Perform the test at the normal operating ATF temperature: 50 to 80°C (122 to 176°F).

    • Perform the test with the A/C turned off.

    Tip:

    Using the intelligent tester 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 intelligent tester to the DLC3.

    2. Clear the DTC (Click here).

    3. Warm up the engine.

    4. Enter the following menus: Powertrain / Engine and ECT / Active Test.

    5. According to the display on the tester, perform the Active Test.

      Tip:

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

      Table 4. Engine and ECT
      Tester Display Test Part Control Range Diagnostic Note
      Control the Shift Position Operate shift solenoid valve and set each shift position

      • Press "→" button: Shift up

      • Press "←" button: Shift down

      It is possible to check the operation of the shift solenoid valves.

      [Vehicle Condition]

      The vehicle speed is 50 km/h (31 mph) or less.
      Tip:

      • This test can be conducted when the vehicle speed is 50 km/h (31 mph) or less.

      • The 4th to 5th up-shift must be performed with the accelerator pedal released.

      • The 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 tester.

    6. Compare the ECM gear shift command and the actual gear position.

      OK
      Gear position changes in accordance with the tester command.
      Table 5. Result
      System Condition ECM Gear Shift Command Proceed to
      1st 2nd 3rd 4th 5th
      Malfunction Shift solenoid valve S1 Stuck ON 1st 2nd 2nd 1st N*1 A
      Stuck OFF 4th 3rd 3rd 4th 5th
      Shift solenoid valve S2 Stuck ON*2 2nd 2nd 3rd 3rd N*1 B
      Stuck OFF*3 1st 1st 4th 4th 5th
      Shift solenoid valve SL2 Stuck ON 1st 2nd 3rd 4th N*1 C
      Stuck OFF 1st 2nd 3rd 4th 5th
      Shift solenoid valve SR Stuck ON*4 1st 2nd 3rd 4th 5th D
      Stuck OFF*5 1st 2nd 3rd 4th 4th
      Normal 1st 2nd 3rd 4th 5th E
      Tip:

      • *1: Neutral

      • *2: When shift solenoid valve S2 is stuck ON, the vehicle cannot drive in reverse.

      • *3: When shift solenoid valve S2 is stuck OFF, the 4th to 5th up-shift will have a large shift shock. Also, the 5th to 4th down-shift will have time lag.

      • *4: When shift solenoid valve SR is stuck ON, the condition can be determined by checking if shift shock has increased excessively.

      • *5: When shift solenoid valve SR is stuck OFF, moving the shift lever from N to D will cause a large shift shock.

      • Gear shift can be determined by paying attention to changes in engine speed.


  4. Click here

    INSPECT SHIFT SOLENOID VALVE S1


    1. A01XAAYE01
      Table 6.
      *1 Shift Solenoid Valve S1:

      Remove the shift solenoid valve S1.

    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. 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 (+) → Shift solenoid valve S1 connector

      • Battery negative (-) → Shift solenoid valve S1 body

      		 Valve moves and makes an operating noise

  5. Click here

    INSPECT TRANSMISSION VALVE BODY ASSEMBLY


    1. Check the transmission valve body assembly (Click here).

      OK
      There are no foreign objects on any valve.

  6. Click here

    INSPECT TORQUE CONVERTER CLUTCH ASSEMBLY


    1. Check the torque converter clutch assembly (Click here).

      OK
      The torque converter clutch operates normally.

    • OK

      REPAIR OR REPLACE AUTOMATIC TRANSMISSION ASSEMBLY (Click here)

    • NG

      REPLACE TORQUE CONVERTER CLUTCH ASSEMBLY (Click here)

  7. Click here

    INSPECT SHIFT SOLENOID VALVE S2


    1. A01X9HAE08
      Table 7.
      *1 Shift Solenoid Valve S2:

      Remove the shift solenoid valve S2.

    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. 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 (+) → Shift solenoid valve S2 connector

      • Battery negative (-) → Shift solenoid valve S2 body

      		 Valve moves and makes an operating noise

  8. Click here

    INSPECT TRANSMISSION VALVE BODY ASSEMBLY


    1. Check the transmission valve body assembly (Click here).

      OK
      There are no foreign objects on any valve.

  9. Click here

    INSPECT TORQUE CONVERTER CLUTCH ASSEMBLY


    1. Check the torque converter clutch assembly (Click here).

      OK
      The torque converter clutch operates normally.

    • OK

      REPAIR OR REPLACE AUTOMATIC TRANSMISSION ASSEMBLY (Click here)

    • NG

      REPLACE TORQUE CONVERTER CLUTCH ASSEMBLY (Click here)

  10. Click here

    INSPECT SHIFT SOLENOID VALVE SL2


    1. A01X2MFE01
      Table 8.
      *a Component without harness connected: (Shift Solenoid Valve SL2)

      Remove the shift solenoid valve SL2.

    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

  11. Click here

    INSPECT TRANSMISSION VALVE BODY ASSEMBLY


    1. Check the transmission valve body assembly (Click here).

      OK
      There are no foreign objects on any valve.

  12. Click here

    INSPECT TORQUE CONVERTER CLUTCH ASSEMBLY


    1. Check the torque converter clutch assembly (Click here).

      OK
      The torque converter clutch operates normally.

    • OK

      REPAIR OR REPLACE AUTOMATIC TRANSMISSION ASSEMBLY (Click here)

    • NG

      REPLACE TORQUE CONVERTER CLUTCH ASSEMBLY (Click here)

  13. Click here

    INSPECT SHIFT SOLENOID VALVE SL1


    1. A01X2MFE04
      Table 9.
      *a Component without harness connected: (Shift Solenoid Valve SL1)

      Remove the shift solenoid valve SL1.

    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

  14. Click here

    INSPECT SHIFT SOLENOID VALVE SR


    1. A01X7VDE08
      Table 10.
      *1 Shift Solenoid Valve SR:

      Remove the shift solenoid valve SR.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      Shift solenoid valve SR connector terminal - Shift solenoid valve SR body 20°C (68°F) 11 to 15 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 (+) → Shift solenoid valve SR connector

      • Battery negative (-) → Shift solenoid valve SR body

      		 Valve moves and makes an operating noise

  15. Click here

    INSPECT TRANSMISSION VALVE BODY ASSEMBLY


    1. Check the transmission valve body assembly (Click here).

      OK
      There are no foreign objects on any valve.

  16. Click here

    INSPECT TORQUE CONVERTER CLUTCH ASSEMBLY


    1. Check the torque converter clutch assembly (Click here).

      OK
      The torque converter clutch operates normally.

    • OK

      REPAIR OR REPLACE AUTOMATIC TRANSMISSION ASSEMBLY (Click here)

    • NG

      REPLACE TORQUE CONVERTER CLUTCH ASSEMBLY (Click here)

  17. Click here

    INSPECT SHIFT SOLENOID VALVE SLT


    1. A01X5SFE03
      Table 11.
      *a Component without harness connected: (Shift Solenoid Valve SLT)

      Remove the shift solenoid valve SLT.

    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 2

      • Battery negative (-) → Terminal 1

      		 Valve moves and makes an operating noise

  18. Click here

    INSPECT TRANSMISSION VALVE BODY ASSEMBLY


    1. Check the transmission valve body assembly (Click here).

      OK
      There are no foreign objects on any valve.

  19. Click here

    INSPECT TORQUE CONVERTER CLUTCH ASSEMBLY


    1. Check the torque converter clutch assembly (Click here).

      OK
      The torque converter clutch operates normally.

    • OK

      REPAIR OR REPLACE AUTOMATIC TRANSMISSION ASSEMBLY (Click here)

    • NG

      REPLACE TORQUE CONVERTER CLUTCH ASSEMBLY (Click here)