Dtc P2716/77 Pressure Control Solenoid D Electrical (Shift Solenoid Valve Slt)


DESCRIPTION

WIRING DIAGRAM

INSPECTION PROCEDURE

INSPECT TRANSMISSION WIRE (SHIFT SOLENOID VALVE SLT)

CHECK WIRE HARNESS (SHIFT SOLENOID VALVE SLT - TCM)

INSPECT SHIFT SOLENOID VALVE SLT

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


DESCRIPTION

The throttle pressure that is applied to the primary regulator valve (which modulates the line pressure) causes 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 current to the solenoid valve, modulating the line pressure and generating throttle pressure.

Toyota Fortuner. Ggn50, 60 Kun51, 61 Tgn51 Lan50.A340F Automatic Transmission.Automatic Transmission System. Dtc P2716/77 Pressure Control Solenoid D Electrical (Shift Solenoid Valve Slt)


DTC Code
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


Toyota Fortuner. Ggn50, 60 Kun51, 61 Tgn51 Lan50.A340F Automatic Transmission.Automatic Transmission System. Dtc P2716/77 Pressure Control Solenoid D Electrical (Shift Solenoid Valve Slt)


INSPECTION PROCEDURE

1.INSPECT TRANSMISSION WIRE (SHIFT SOLENOID VALVE SLT)


    Toyota Fortuner. Ggn50, 60 Kun51, 61 Tgn51 Lan50.A340F Automatic Transmission.Automatic Transmission System. Dtc P2716/77 Pressure Control Solenoid D Electrical (Shift Solenoid Valve Slt)

  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
    		Always
    		10 kΩ or higher
    6 (SLT-) - Body ground
    		Always
    		10 kΩ or higher


NG
Go to step 3
OK


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


    Toyota Fortuner. Ggn50, 60 Kun51, 61 Tgn51 Lan50.A340F Automatic Transmission.Automatic Transmission System. Dtc P2716/77 Pressure Control Solenoid D Electrical (Shift Solenoid Valve Slt)

  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
    		Always
    		10 kΩ or higher
    T19-19 (SLT-) - Body ground
    		Always
    		10 kΩ or higher


NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
OK

REPLACE TCM

3.INSPECT SHIFT SOLENOID VALVE SLT
Toyota Fortuner. Ggn50, 60 Kun51, 61 Tgn51 Lan50.A340F Automatic Transmission.Automatic Transmission System. Dtc P2716/77 Pressure Control Solenoid D Electrical (Shift Solenoid Valve Slt)

  1. Remove the shift solenoid valve SLT.

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

    Standard Resistance:
    Tester Connection
    		Condition
    		Specified Condition
    1 - 2
    		20°C (68°F)
    		5.0 to 5.6 Ω

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

    OK:
    Measurement Condition
    		Specified Condition
    1. Battery positive (+) with a 21 W bulb → Terminal 2
    2. Battery negative (-) → Terminal 1
    		Valve moves and makes an operating noise


NG
REPLACE SHIFT SOLENOID VALVE SLT
OK

REPLACE TRANSMISSION WIRE