DTC Advanced Diagnostics: P2715
DTC P2715 : CVT Lock-Up Clutch Control Solenoid Valve Stuck ON
General Description
The CVT lock-up clutch control solenoid valve controls hydraulic pressure to the torque converter clutch. The CVT lock-up clutch control solenoid valve is controlled by duty cycle output. The spool in the CVT lock-up clutch control solenoid valve moves the valve according to the current, and produces hydraulic pressure in proportion to the current. To supply proper torque converter clutch hydraulic pressure, the transmission control module (TCM) outputs a CVT lock-up clutch control solenoid valve hydraulic pressure control signal. If the torque converter clutch is judged as stuck ON, the TCM detects a CVT lock-up clutch control solenoid valve stuck ON malfunction and stores a DTC.
Monitor Execution, Sequence, Duration, DTC Type
| Execution | Continuous |
| Sequence | None |
| Duration | Depending on the driving conditions |
| DTC Type | Two drive cycles, MIL off, Shift position indicator blinks |
Enable Conditions
| Condition | Minimum | Maximum | |
|---|---|---|---|
| Engine speed [Engine Speed] | 500 rpm | - | |
| Vehicle speed [Vehicle Speed]* | - | 13 mph (21 km/h) | |
| Acceleration** | - | 0.98 m/s 2 (3.2 ft/s 2) | |
| Throttle position | 4° | 42° | |
| Accelerator pedal position variation | - | 13°/s | |
| Shift position/mode | D, S, L*** | ||
*: Symptom 1
**: Symptom 2
***: Without paddle shifter
[ ]: HDS Parameter
Malfunction Threshold
Symptom 2 occurs after Symptom 1 occurs.
- Symptom 1: Actual torque converter slip rate [ETR] is more than 99 %, or less than 130 % for at least 600 milliseconds when target torque converter slip rate is less than 97 %.
- Symptom 2: Actual torque converter slip rate [ETR] is more than 99 %, or less than 130 % for at least 1 second.
Possible Cause
The causes shown may not be a complete list of all potential problems, and it is possible that there may be other causes.
- CVT lock-up clutch control solenoid valve stuck on
Confirmation Procedure
Operating Condition
- Start the engine.
- With the brake pedal pressed, place the shift from N position/mode to D position/mode.
- Drive the vehicle at 12 mph (20 km/h) or less for at least 10 seconds.
- Slow down and stop the vehicle.
- Turn the vehicle to the OFF (LOCK) mode.
- Repeat Driving Pattern steps 1 through 4.
- Drive the vehicle in this manner only if the traffic regulations and ambient conditions allow.
Diagnosis Details
Conditions for setting the DTC
When a malfunction is detected during the first drive cycle, a Pending DTC is stored in the TCM memory. If the malfunction returns in the next (second) drive cycle, the shift position indicator blinks and a Confirmed DTC and the freeze data are stored. The MIL does not come on.
Conditions for clearing the DTC
The shift position indicator comes off by turning the vehicle to the OFF (LOCK) mode. The Pending DTC, the Confirmed DTC, and the freeze data can be cleared with the scan tool clear command.