- DTC judgment completed
- System normal
| Last Modified: 04-05-2023 | 6.11:8.1.0 | Doc ID: RM1000000018BP2 |
| Model Year Start: 2018 | Model: Sienna | Prod Date Range: [11/2017 - ] |
| Title: UA80F (AUTOMATIC TRANSMISSION / TRANSAXLE): AUTOMATIC TRANSAXLE SYSTEM: P074011; Torque Converter Clutch Circuit Short to Ground; 2018 - 2020 MY Sienna [11/2017 - ] | ||
|
DTC |
P074011 |
Torque Converter Clutch Circuit Short to Ground |
DESCRIPTION
Shift solenoid valve SL is turned on and off by signals from the ECM to control the hydraulic pressure acting on the lock-up relay valve, which then controls operation of the lock-up clutch.
|
DTC No. |
Detection Item |
DTC Detection Condition |
Trouble Area |
MIL |
Memory |
Note |
|---|---|---|---|---|---|---|
|
P074011 |
Torque Converter Clutch Circuit Short to Ground |
1. Diagnosis Condition 2. Malfunction Status 3. Malfunction Time 4. Other
|
|
Comes on |
DTC stored |
SAE Code: P2769 |
Fail-safe function:
If the ECM detects a malfunction, it turns shift solenoid valve SL off.
MONITOR DESCRIPTION
Based on the signals from the throttle position sensor, the air flow meter and the crankshaft position sensor, the ECM sends a signal to shift solenoid valve SL to regulate the hydraulic pressure and provide smoother torque converter engagement. Shift solenoid valve SL responds to commands from the ECM. The valve controls the lock-up relay valve to perform the torque-converter lock-up function. If the ECM detects a in the shift solenoid valve SL circuit, it will illuminate the MIL and store the DTC.
MONITOR STRATEGY
|
Related DTCs |
P2769: Shift solenoid valve SL/Range check |
|
Required sensors/Components |
Shift solenoid valve SL |
|
Frequency of operation |
Continuous |
|
Duration |
1 time |
|
MIL operation |
2 driving cycles |
|
Sequence of operation |
None |
TYPICAL ENABLING CONDITIONS
|
The monitor will run whenever the following DTCs are not stored |
None |
|
Battery voltage |
8 V or more |
|
Ignition switch |
ON |
|
Starter |
OFF |
TYPICAL MALFUNCTION THRESHOLDS
|
All of the following conditions are met |
0.065536 sec. or more |
|
Time after command to solenoid OFF to ON |
0.008192 sec. or more |
|
Command to shift solenoid valve SL |
ON |
|
Solenoid terminal voltage level |
Low |
COMPONENT OPERATING RANGE
|
Solenoid terminal voltage level |
High |
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
![2017 - 2020 MY Sienna [08/2016 - ]; UA80F (AUTOMATIC TRANSMISSION / TRANSAXLE): AUTOMATIC 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.
-
Perform the Lock-up Function inspection in 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 / Transmission / Utility / All Readiness.
- Input the DTC: P074011.
-
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 registration and/or initialization when parts related to the automatic transmission are replaced (Click here
).
PROCEDURE
|
1. |
INSPECT TRANSMISSION WIRE (SHIFT SOLENOID VALVE SL) |
|
(a) Disconnect the B65 transmission wire connector. |
|
(b) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
13 (SL) - Body ground |
20°C (68°F) |
11 to 15 Ω |
(c) Connect the B65 transmission wire connector.
| NG |
|
|
|
2. |
CHECK HARNESS AND CONNECTOR (TRANSMISSION WIRE - ECM) |
(a) Disconnect the B67 ECM connector.
(b) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
B67-62 (SL) - Body ground |
20°C (68°F) |
11 to 15 Ω |
| NG |
|
REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
|
3. |
REPLACE ECM |
Click here
| NEXT |
|
|
4. |
INSPECT SHIFT SOLENOID VALVE SL |
|
(a) Remove the shift solenoid valve SL. Click here
|
|
(b) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
Shift solenoid valve SL connector terminal - Shift solenoid valve SL body |
20°C (68°F) |
11 to 15 Ω |
(c) Apply 12 V battery voltage to the shift solenoid valve and check that the valve moves and makes an operating sound.
OK:
|
Measurement Condition |
Specified Condition |
|---|---|
|
Valve moves and makes an operating sound |
| OK |
|
| NG |
|
|
|