P2714

A343E AUTOMATIC TRANSMISSION / TRANSAXLE: AUTOMATIC TRANSMISSION SYSTEM: P2714: Pressure Control Solenoid "D" Performance (Shift Solenoid Valve SLT)
P2714 - Pressure Control Solenoid "D" Performance (Shift Solenoid Valve SLT)

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 duty ratio* of 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.

HINT
*: The duty ratio is the ratio of the current ON time (A) to the total of the current ON and OFF time (A + B).

Duty Ratio (%) = A / (A + B) x 100





MONITOR DESCRIPTION

With the shift lever in any forward position, when the difference in speed between the turbine and output shaft exceeds a specified value determined by the ECM (varies with output speed), the ECM illuminates the MIL and stores the DTC. When shift solenoid valve SLT remains on, the oil pressure and clutch engagement force decrease.

MONITOR STRATEGY





TYPICAL ENABLING CONDITIONS













TYPICAL MALFUNCTION THRESHOLDS

When either condition below is met: ON malfunction (A) or (B)









INSPECTION PROCEDURE

NOTICE:
Perform the universal trip to clear permanent DTCs DTC Check / Clear.

PROCEDURE

1. CHECK DTC OUTPUT (IN ADDITION TO DTC P2714)

(a) Connect the Techstream to the DLC3.

(b) Turn the ignition switch to ON.

(c) Turn the Techstream on.

(d) Enter the following menus: Powertrain / Engine and ECT / Trouble Codes.

(e) Read the DTCs using the Techstream.





HINT
If any other codes besides P2714 are output, perform troubleshooting for those DTCs first.

B -- GO TO DTC CHART
A -- Continue to next step.

2. INSPECT SHIFT SOLENOID VALVE SLT

(a) Remove shift solenoid valve SLT.





(b) Measure the resistance according to the value(s) in the table below.

Standard Resistance:





(c) Apply 12 V battery voltage to the shift solenoid valve and check that the valve moves and makes an operating noise.

OK:









NG -- REPLACE SHIFT SOLENOID VALVE SLT
OK -- Continue to next step.

3. INSPECT TRANSMISSION VALVE BODY ASSEMBLY P0751

NG -- REPAIR OR REPLACE TRANSMISSION VALVE BODY ASSEMBLY
OK -- Continue to next step.

4. INSPECT TORQUE CONVERTER CLUTCH ASSEMBLY

(a) Check the torque converter clutch assembly Testing and Inspection.

OK:

The torque converter clutch operates normally.

NG -- REPLACE TORQUE CONVERTER CLUTCH ASSEMBLY

OK -- REPAIR OR REPLACE AUTOMATIC TRANSMISSION ASSEMBLY