DTC P2759 Torque Converter Clutch Pressure Control Solenoid Control Circuit Electrical (Shift Solenoid Valve SLU): Wiring Diagram

1. Disconnect the transmission wire connector from the transmission.
2. Measure the resistance according to the value(s) in the table below.

   Standard resistance 

   TESTER CONNECTION SPECIFIED CONDITION CHART
   
   

   Tester Connection	Specified Condition 20°C (68°F)
   12 (SLU+) - 4 (SLU-)	5.0 to 5.6 Ω

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

Fig 2: Inspecting Transmission Wire (SLU)

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Standard resistance (Check for short) 

NG : Go to step  3

OK : Go to next Step 

1. Connect the transmission wire connector to the transmission.
2. Disconnect the ECM connector.
3. Measure the resistance according to the value(s) in the table below.

   Standard resistance 

   TESTER CONNECTION SPECIFIED CONDITION CHART
   
   

   Tester Connection	Specified Condition 20°C (68°F)
   E4-13 (SLU+) - E4-12 (SLU-)	5.0 to 5.6 Ω

   Fig 3: Identifying ECM E4 Connector

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
4. Measure the resistance according to the value(s) in the table below.

Standard resistance (Check for short) 

NG : REPAIR OR REPLACE HARNESS OR CONNECTOR 

OK : REPLACE ECM 

1. Remove the shift solenoid valve SLU.
2. Measure the resistance according to the value(s) in the table below.

   Standard resistance 

   TESTER CONNECTION SPECIFIED CONDITION CHART
   
   

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

3. Connect the positive (+) lead with a 21 W bulb to terminal 2 and the negative (-) lead to terminal 1 of the solenoid valve connector, then check the movement of the valve.
   Fig 4: Inspecting Shift Solenoid Valve Slu

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

OK: 

The solenoid makes an operating sound. 

NG : REPLACE SHIFT SOLENOID VALVE SLU 

OK : REPAIR OR REPLACE TRANSMISSION WIRE