- DTC judgment completed
- System normal
| Last Modified: 05-13-2024 | 6.11:8.1.0 | Doc ID: RM100000001GYST |
| Model Year Start: 2020 | Model: Corolla Hatchback | Prod Date Range: [01/2019 - 11/2022] |
| Title: K313 (CVT): CONTINUOUSLY VARIABLE TRANSAXLE SYSTEM: P2759; Torque Converter Clutch Pressure Control Solenoid Control Circuit Electrical (Shift Solenoid Valve SLU); 2020 - 2023 MY Corolla Corolla Hatchback [01/2019 - 11/2022] | ||
|
DTC |
P2759 |
Torque Converter Clutch Pressure Control Solenoid Control Circuit Electrical (Shift Solenoid Valve SLU) |
DESCRIPTION
The ECM uses the shift solenoid valve SLU to perform forward and reverse clutch control or lock-up clutch control.
|
*1 |
Spool Valve |
*2 |
Sleeve |
|
*3 |
Solenoid Coil |
- |
- |
|
*a |
Hydraulic Pressure |
*b |
Current Flow to Solenoid |
|
DTC No. |
Detection Item |
DTC Detection Condition |
Trouble Area |
MIL |
Memory |
|---|---|---|---|---|---|
|
P2759 |
Torque Converter Clutch Pressure Control Solenoid Control Circuit Electrical (Shift Solenoid Valve SLU) |
While the vehicle is driven, there is an open or short in the shift solenoid valve SLU circuit for 1 second or more (1-trip detection logic). |
|
Comes on |
DTC stored |
MONITOR DESCRIPTION
This DTC indicates an open or short in the shift solenoid valve SLU circuit. If there is an open or short in the shift solenoid valve SLU circuit, the ECM detects the malfunction, illuminates the MIL and stores this DTC.
MONITOR STRATEGY
|
Related DTCs |
P2759: Torque converter clutch pressure control solenoid (Shift solenoid valve SLU) / Range check |
|
Required sensors/Components |
Continuously variable transaxle assembly (Shift solenoid valve SLU) |
|
Frequency of operation |
Continuous |
|
Duration |
1 second |
|
MIL operation |
Immediately |
|
Sequence of operation |
None |
TYPICAL ENABLING CONDITIONS
All
|
The monitor will run whenever the following DTCs are not present |
None |
|
Solenoid current cut status |
Not cut |
|
Time after battery voltage is 8 V or more |
0.5 seconds or more |
|
Write inhibit |
Permit |
|
Time after write status forbiddance to permit |
0.5 seconds or more |
|
Ignition switch |
ON |
|
Time after ignition switch OFF to ON |
0.5 seconds or more |
|
Starter |
OFF |
|
Time after starter ON to OFF |
0.5 seconds or more |
Condition (A)
|
Battery voltage |
12 V or more |
Condition (B)
|
Battery voltage |
10 V or more and less than 12 V |
|
Target current |
Less than 0.75 A |
Condition (C)
|
Battery voltage |
8 V or more |
|
Target current |
0.25 A or more |
TYPICAL MALFUNCTION THRESHOLDS
One of the following conditions is met: Condition (A), (B) or (C)
Condition (A) and (B)
|
Output duty cycle |
100% or more |
Condition (C)
|
Output duty cycle |
0% or less |
COMPONENT OPERATING RANGE
|
Output duty cycle |
More than 0% and less than 100% |
CONFIRMATION DRIVING PATTERN
CAUTION:
When performing the confirmation driving pattern, obey all speed limits and traffic laws.
HINT:
- After repairs have been completed, clear the DTCs and then check that the vehicle has returned to normal by performing the following All Readiness check procedure.
-
When clearing the permanent DTCs, refer to the Clear Permanent DTC procedure.
Click here
![2020 - 2023 MY Corolla Corolla Hatchback [01/2019 - 11/2022]; K313 (CVT): CONTINUOUSLY VARIABLE TRANSAXLE SYSTEM: DTC CHECK / CLEAR](/t3Portal/stylegraphics/info.gif)
- Connect the Techstream to the DLC3.
- Turn the ignition switch to ON and turn the Techstream on.
- Clear the DTCs (even if no DTCs are stored, perform the clear DTC procedure).
- Turn the ignition switch off and wait for 2 minutes or more.
- Turn the ignition switch to ON and turn the Techstream on.
- Start the engine.
-
Drive the vehicle and confirm the lock-up on and off conditions according to Road Test. [*1]
Click here
HINT:
[*1]: Normal judgment procedure.
The normal judgment procedure is used to complete DTC judgment and also used when clearing permanent DTCs.
- Stop the vehicle.
- Enter the following menus: Powertrain / Engine and ECT / Utility / All Readiness.
- Input the DTC: P2759.
-
Check the DTC judgment result.
Techstream Display
Description
NORMAL
ABNORMAL
- DTC judgment completed
- System abnormal
INCOMPLETE
- DTC judgment not completed
- Perform driving pattern after confirming DTC enabling conditions
N/A
- Unable to perform DTC judgment
- Number of DTCs which do not fulfill DTC preconditions has reached ECU memory limit
HINT:
- If the judgment result shows NORMAL, the system is normal.
- If the judgment result shows ABNORMAL, the system has a malfunction.
- If the judgment result shows INCOMPLETE or N/A, perform the normal judgment procedure again.
WIRING DIAGRAM
CAUTION / NOTICE / HINT
NOTICE:
-
Perform the universal trip to clear permanent DTCs.
Click here
-
Perform initialization when parts related to the continuously variable transaxle system are replaced.
Click here
-
Check that no DTCs are stored after performing initialization.
Click here
PROCEDURE
|
1. |
INSPECT TRANSMISSION WIRE (SHIFT SOLENOID VALVE SLU) |
|
(a) Disconnect the C60 transmission wire connector. |
|
(b) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
6 (SLU+) - 13 (SLU-) |
20°C (68°F) |
5.0 to 5.6 Ω |
|
6 (SLU+) - Body ground and other terminals |
Always |
10 kΩ or higher |
|
13 (SLU-) - Body ground and other terminals |
Always |
10 kΩ or higher |
(c) Connect the C60 transmission wire connector.
| NG |
|
|
|
2. |
CHECK HARNESS AND CONNECTOR (TRANSMISSION WIRE - ECM) |
(a) Disconnect the C77 ECM connector.
(b) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
C77-43 (SLU+) - C77-42 (SLU-) |
20°C (68°F) |
5.0 to 5.6 Ω |
|
C77-43 (SLU+) - Body ground and other terminals |
Always |
10 kΩ or higher |
|
C77-42 (SLU-) - Body ground and other terminals |
Always |
10 kΩ or higher |
(c) Connect the C77 ECM connector.
| NG |
|
REPAIR OR REPLACE HARNESS OR CONNECTOR (TRANSMISSION WIRE - ECM) |
|
|
3. |
REPLACE ECM |
(a) Replace the ECM.
Click here
| NEXT |
|
|
4. |
REPLACE CONTINUOUSLY VARIABLE TRANSAXLE ASSEMBLY |
(a) Replace the continuously variable transaxle assembly.
Click here
| NEXT |
|
|
|