DTC    P2716/77    Pressure Control Solenoid "D" Electrical (Shift Solenoid Valve SLT)

for Preparation Click here


DESCRIPTION

D002290E02
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 extent that the accelerator pedal is depressed or the output of engine power.
This controls the line pressure and provides smooth shifting characteristics.
Upon receiving a signal of the throttle valve opening angle, the TCM controls the line pressure by sending a predetermined duty ratio* to the solenoid valve, modulating the line pressure and generating throttle pressure.

HINT:
BE04056E05
*: 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 No.
DTC Detection Condition
Trouble Area
P2716/77
TCM detects shift solenoid valve SLT circuit malfunction for 1 sec. or more (1 trip detection logic)
  1. Open or short in shift solenoid valve SLT circuit
  2. Shift solenoid valve SLT
  3. TCM

WIRING DIAGRAM


A110976E03


INSPECTION PROCEDURE

1.INSPECT TRANSMISSION WIRE (SHIFT SOLENOID VALVE SLT)


    G022892E02

  1. Disconnect the E1 wire connector.

  1. Measure the resistance of the transmission wire.

    Standard resistance:
    Tester Connection
    		Condition
    		Specified Condition
    2 (SLT+) - 6 (SLT-)
    		20°C (68°F)
    		5.0 to 5.6 Ω
    2 (SLT+) - Body ground
    		20°C (68°F)
    		10 kΩ or higher
    6 (SLT-) - Body ground
    		20°C (68°F)
    		10 kΩ or higher



NG
Go to step 3
OK


2.CHECK WIRE HARNESS (SHIFT SOLENOID VALVE SLT - TCM)


    F045523E06

  1. Disconnect the T19 TCM connector.

  1. Measure the resistance of the wire harness side connector.

    Standard resistance:
    Tester Connection
    		Condition
    		Specified Condition
    T19-20 (SLT+) - T19-19 (SLT-)
    		20°C (68°F)
    		5.0 to 5.6 Ω
    T19-20 (SLT+) - Body ground
    		20°C (68°F)
    		10 kΩ or higher
    T19-19 (SLT-) - Body ground
    		20°C (68°F)
    		10 kΩ or higher



NG
REPAIR OR REPLACE HARNESS AND CONNECTOR
OK

REPLACE TCM 

3.INSPECT SHIFT SOLENOID VALVE SLT
G020767E25

  1. Remove the shift solenoid valve SLT.

  1. Measure the resistance between the solenoid valve terminal and solenoid valve body.

    Standard resistance:
    5.0 to 5.6 Ωat 20°C (68°F)



  1. Connect the battery's positive (+) lead to the terminal of the solenoid connector, and the negative (-) lead to the solenoid body.

    OK:
    Solenoid makes operating noise.


    HINT:
    G036606E01
    Reference: Inspection using an oscilloscope.
    Check the waveform of the TCM connector.

    Standard voltage:
    Refer to illustration.:
    Item
    		Content
    Tester Connection
    		T19-20 (SLT+) - T19-19 (SLT-)
    Tool Setting
    		5 V/DIV., 1 msec./DIV.
    Condition
    		Engine idle speed



NG
REPLACE SHIFT SOLENOID VALVE SLT
OK

REPLACE TRANSMISSION WIRE