DTC Code | DTC Name |
---|---|
P074011 | Torque Converter Clutch Circuit Short to Ground |
DESCRIPTION
By turning the solenoid (SL) valve ON or OFF, the ECM controls the fluid pressure to the lock-up relay valve, performing lock-up control.
DTC No. | Detection Item | DTC Detection Condition | Trouble Area | MIL | Memory | Note |
---|---|---|---|---|---|---|
P074011 | Torque Converter Clutch Circuit Short to Ground | The solenoid (SL) valve terminal voltage level is low, when the solenoid (SL) valve is operated (2-trip detection logic). |
|
Comes on | DTC stored | SAE: P2769 |
Fail-safe function:
If the ECM detects a malfunction, it turns the solenoid (SL) valve 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 the solenoid (SL) valve to regulate the hydraulic pressure and provide smooth torque converter assembly engagement. The solenoid (SL) valve responds to commands from the ECM and controls the lock-up relay valve to perform the torque-converter lock-up function. If the ECM detects a short in the solenoid (SL) valve circuit, it will illuminate the MIL and store a DTC.
CONFIRMATION DRIVING PATTERN
Tech Tips
After repair has been completed, clear the DTC and then check that the vehicle has returned to normal by performing the following All Readiness check procedure.
Connect the GTS to the DLC3.
Turn the engine switch on (IG) and turn the GTS on.
Clear the DTCs (even if no DTCs are stored, perform the clear DTC procedure).
Turn the engine switch off and wait for at least 30 seconds.
Turn the engine switch on (IG) and turn the GTS on.
Perform the Lock-up Function in Road Test.
Enter the following menus: Powertrain / Transmission / Utility / All Readiness.
Input the DTC: P074011.
Check the DTC judgment result.
GTS Display | Description |
---|---|
NORMAL |
|
ABNORMAL |
|
INCOMPLETE |
|
N/A |
|
Tech Tips
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 Confirmation Driving Pattern and check the DTC judgment result again.
WIRING DIAGRAM
*1 | Solenoid (SL) Valve |
*2 | Transmission Wire |
CAUTION / NOTICE / HINT
Note
Perform registration and/or initialization when parts related to the automatic transmission are replaced.
PROCEDURE
CHECK HARNESS AND CONNECTOR (TRANSMISSION WIRE (SOLENOID (SL) VALVE) - ECM)
Disconnect the ECM connector.
Measure the resistance according to the value(s) in the table below.
Standard Resistance | ||||||
---|---|---|---|---|---|---|
|
Result | |||
---|---|---|---|
|
NG |
CHECK HARNESS AND CONNECTOR (TRANSMISSION WIRE - ECM) Click here |
OK |
REPLACE ECM
Replace the ECM.
Result | ||
---|---|---|
|
NEXT |
PERFORM A/T CODE REGISTRATION Click here |
CHECK HARNESS AND CONNECTOR (TRANSMISSION WIRE - ECM)
Disconnect the transmission wire connector.
Disconnect the ECM connector.
Measure the resistance according to the value(s) in the table below.
Standard Resistance | ||||||
---|---|---|---|---|---|---|
|
Result | |||
---|---|---|---|
|
NG |
REPAIR OR REPLACE HARNESS OR CONNECTOR |
OK |
INSPECT SOLENOID (SL) VALVE
*1 | Solenoid (SL) Valve |
Remove the solenoid (SL) valve.
Measure the resistance according to the value(s) in the table below.
Standard Resistance | ||||||
---|---|---|---|---|---|---|
|
Connect a positive (+) lead from the battery to the terminal of the solenoid valve connector, and a negative (-) lead to the solenoid body. Check that the valve moves and makes an operating sound.
OK |
---|
Valve moves and makes an operating sound. |
Result | |||
---|---|---|---|
|
OK |
REPAIR OR REPLACE TRANSMISSION WIRE Click here |
NG |
REPLACE SOLENOID (SL) VALVE Click here |