DTC P2716 Pressure Control Solenoid "D" Electrical (Shift Solenoid Valve SLT): Description

WARNING: This page is about a different car, the 2007 Toyota Land Cruiser. However, it is still accessible from the selected car via links, so may be relevant.

Fig 1: Line Pressure Graph

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

The throttle pressure that is applied to the primary regulator valve (which modulates the line pressure) causes the solenoid valve SLT, under electronic control, to precisely modulate and generate the line pressure according to the amount of depression of the accelerator pedal or the engine power output. This controls the line pressure and provides smooth shifting characteristics.

Upon receiving a signal of the throttle valve opening angle, the ECM controls the line pressure by sending a predetermined duty ratio* to the solenoid valve, modulating the line pressure and generating throttle pressure.

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

DTC DETECTION CONDITION AND TROUBLE AREA

DTC No.	DTC Detection Condition	Trouble Area
P2716	Open or short is detected in shift solenoid valve SLT circuit for 1 second or more while driving (1 trip detection logic)	Open or short in shift solenoid valve SLT circuit Shift solenoid valve SLT ECM

Reference: Inspect using an oscilloscope.

Check the waveform of the ECM connector.

Standard voltage: Refer to illustration.

WAVEFORM REFERENCE

Item	Content
Tester Connection	E6-13 (SLT+) - E6-12 (SLT-)
Tool Setting	5 V/DIV., 1 msec./DIV.
Condition	Engine idle speed

Fig 2: Signal Waveform Graph