MVB 4 Speed - Automatic Transmission

DTC P2714

Circuit Description

The shift solenoid valve (SLT) controls the transmission line pressure for smooth transmission operation based on signal from the throttle position sensor and the vehicle speed sensor. The engine control module (ECM) adjusts the duty ratio of the SLT solenoid valve to control hydraulic line pressure coming from the primary regulator valve. Appropriate line pressure assures smooth shifting with varying engine outputs.

In any forward position, when the difference between the revolutions of the turbine, intermediate and output shaft exceeds the specified value (varies with intermediate, output speed) determined by the ECM, the ECM illuminates the MIL and stores the DTC.

Important: If driving under these conditions continues, the clutch will burn out and the vehicle will no longer be drivable.

When shift solenoid valve SLT remains ON, the oil pressure goes down and the clutch engagement force decreases.

DTC Descriptor

This diagnostic procedure supports the following DTC:

DTC P2714 Pressure Control Solenoid "D" Performance (Shift Solenoid Valve SLT)

Conditions for Running the DTC

The engine is running.

Conditions for Setting the DTC

The ECM detects a malfunction on SLT (ON side) according to the revolution difference of the turbine, intermediate, output shaft and also by the oil pressure.

Action Taken When the DTC Sets

* DTC P2714 is a type C DTC.
* The malfunction indicator lamp (MIL) illuminates the first time the diagnostic runs with the fault active.

Conditions for Clearing the MIL/DTC

The DTC will clear when conditions for setting the DTC have been repaired.