Drivetrain. Corolla. Zre142 Aze141
U341E Automatic Transmission Transaxle. Corolla. Zre142 Aze141
TYPICAL MALFUNCTION THRESHOLDS
CHECK OTHER DTCS OUT PUT (IN ADDITION TO DTC P2714)
INSPECT SHIFT SOLENOID VALVE SLT
INSPECT TRANSMISSION VALVE BODY ASSEMBLY
INSPECT TORQUE CONVERTER ASSEMBLY
DTC P2714 Pressure Control Solenoid "D" Performance (Shift Solenoid Valve SLT) |
SYSTEM DESCRIPTION
Shift solenoid valve SLT controls the transmission line pressure for smooth transmission operation based on signals from the throttle position sensor and vehicle speed sensor. The ECM adjusts the current to shift solenoid valve SLT to control the hydraulic line pressure coming from the primary regulator valve. Appropriate line pressure assures smooth shifting with varying engine outputs.
| DTC No. | DTC Detection Condition | Trouble Area |
| P2714 | ECM detects a malfunction on SLT (ON side) according to the revolution difference of the turbine, intermediate and the output shaft, and also by the oil pressure. (2-trip detection logic) |
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MONITOR DESCRIPTION
In any forward position, when the difference between the revolutions of the turbine, intermediate and output shaft exceeds the specified value (varies with intermediate, output speed) determined by the ECM, the ECM illuminates the MIL and stores the DTC.When shift solenoid valve SLT remains on, the oil pressure goes down and the clutch engagement force decreases.
- NOTICE:
- If you continue driving under these conditions, the clutch will burn out and the vehicle will no longer be drivable.
MONITOR STRATEGY
| Related DTCs | P2714: Shift solenoid valve SLT/ON malfunction |
| Required sensors/Components | Shift solenoid valve SLT, Speed sensor (NT), Speed sensor (SPD) |
| Frequency of operation | Continuous |
| Duration | 1.0 second |
| MIL operation | 2 driving cycles |
| Sequence of operation | None |
TYPICAL ENABLING CONDITIONS
The following conditions are common to ON malfunctions (a), (b), (c) and (d).| The monitor will run whenever this DTC is not present. (Not circuit malfunction) | P0500 (Vehicle speed sensor circuit) P0712, P0713 (ATF temperature sensor circuit (TFT sensor)) P0717 (Turbine speed sensor circuit) P0973, P0974 (Shift solenoid valve S1 circuit) P0976, P0977 (Shift solenoid valve S2 circuit) P2759 (Shift solenoid valve SLU circuit) P2716 (Shift solenoid valve SLT circuit) P0120, P0121, P0122, P0123, P0220, P0222, P0223, P0604, P0606, P0607, P060A, P060D, P060E, P0657, P1607, P2102, P2103, P2111, P2112, P2118, P2119, P2135 ((Electronic throttle control system) |
| Transmission shift position | D |
| Time after shifting N to D | 4.5 seconds or more |
| ATF (Automatic Transmission Fluid) temperature | -10°C (14°F) or more |
| ATF temperature sensor (TFT sensor) circuit | No circuit malfunction |
| Electronic Throttle Control System (if applicable) | No circuit malfunction |
| Shift solenoid valve S1 circuit | No circuit malfunction |
| Shift solenoid valve S2 circuit | No circuit malfunction |
| Shift solenoid valve SLU circuit | No circuit malfunction |
| Shift solenoid valve SLT circuit | No circuit malfunction |
| Speed sensor (NT) circuit | No circuit malfunction |
| Speed sensor (SPD) circuit | No circuit malfunction |
| ECM gearshift command | 1st |
| Input (turbine) speed | 200 rpm or more |
| Output speed | 300 rpm or more |
| ECM gearshift command | 2nd |
| Input (turbine) speed | 200 rpm or more |
| Output speed | 300 rpm or more |
| ECM gearshift command | 3rd |
| Input (turbine) speed | 200 rpm or more |
| Output speed | 300 rpm or more |
| ECM gearshift command | 4th |
| Input (turbine) speed | 200 rpm or more |
| Output speed | 300 rpm or more |
TYPICAL MALFUNCTION THRESHOLDS
[ON malfunction]
- Detection condition: Total accumulated time of ON malfunctions (a), (b), (c) and (d) is 1 second or more
| NT - NO x 1st gear ratio NT: Input (turbine) speed NO: Internal counter shaft speed | More than 300 rpm at output speed of 1000 rpm (Conditions vary with output speed) |
| Duration | 0.85 seconds or more |
| NT - NO x 2nd gear ratio | More than 300 rpm at output speed of 1000 rpm (Conditions vary with output speed) |
| Duration | 0.85 seconds or more |
| NT - NO x 3rd gear ratio | More than 300 rpm at output speed of 1000 rpm (Conditions vary with output speed) |
| Duration | 0.85 seconds or more |
| NT - NO x 4th gear ratio | More than 300 rpm at output speed of 1000 rpm (Conditions vary with output speed) |
| Duration | 0.85 seconds or more |
INSPECTION PROCEDURE
- NOTICE:
- Perform the universal trip to clear permanent DTCs (COROLLA_ZRE142 RM000000W770S5X.html).
| 1.CHECK OTHER DTCS OUT PUT (IN ADDITION TO DTC P2714) |
Connect the Techstream to the DLC3.
Turn the ignition switch to ON and the Techstream main switch on.
When you use Techstream:
Select the item "Powertrain / Engine and ECT / Trouble Codes".
Read the DTCs using the Techstream.
- Result:
Result Proceed to P2714 A P2714 and other DTCs B
- HINT:
- If any other codes besides "P2714" are output, perform the troubleshooting for those DTCs first.
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| A | |
| 2.INSPECT SHIFT SOLENOID VALVE SLT |
Remove the shift solenoid valve SLT.
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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
Connect the positive (+) lead with a 21 W bulb to terminal 2 and negative (-) lead to terminal 1 of the solenoid valve connector, then check the movement of the valve.
- OK:
- The solenoid makes an operating sound.
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| OK | |
| 3.INSPECT TRANSMISSION VALVE BODY ASSEMBLY |
- OK:
- There are no foreign objects on each valve.
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| OK | |
| 4.INSPECT TORQUE CONVERTER ASSEMBLY |
- OK:
- The torque converter assembly operates normally.
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| OK | ||
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