Toyota RAV4 manuals

Toyota RAV4 (XA40) 2013-2018 Service Manual: Torque converter clutch solenoid circuit

Toyota RAV4. Torque converter clutch solenoid circuit


Description

The shift solenoid valve dsl is turned on and off by signals from the ecm to control the hydraulic pressure acting on the lock-up relay valve, which then controls operation of the lock-up clutch.

Toyota RAV4. Torque converter clutch solenoid circuit


Fail-safe function: if the ecm detects a malfunction, it turns the shift solenoid valve dsl off.

Monitor description

Torque converter lock-up is controlled by the ecm based on engine rpm, engine load, engine temperature, vehicle speed, transmission temperature, and shift position selection. The ecm determines the lock-up status of the torque converter by comparing the engine rpm (ne) to the input rpm (nt). The ecm calculates the actual transmission gear by comparing the input rpm (nt) to the output rpm (sp2).

When conditions are appropriate, the ecm requests "lock-up" by applying control voltage to the shift solenoid valve dsl. When the shift solenoid valve dsl is opened, the shift solenoid valve dsl applies pressure to the lock-up relay valve and locks the torque converter clutch. If the ecm detects an open or short in the shift solenoid valve dsl circuit, the ecm interprets this as a fault in the shift solenoid valve dsl or its circuit. The ecm will illuminate the mil and store a dtc.

Monitor strategy

Toyota RAV4. Monitor strategy


Typical enabling conditions

Toyota RAV4. Typical enabling conditions


Toyota RAV4. Typical enabling conditions


Typical malfunction thresholds

Toyota RAV4. Typical malfunction thresholds


Component operating range

Toyota RAV4. Component operating range


Wiring diagram

Refer to dtc p0741 (see page ax-62).

Inspection procedure

  1. Inspect transmission wire (shift solenoid valve dsl)

Toyota RAV4. Inspect transmission wire (shift solenoid valve dsl)


  1. Disconnect the b27 wire connector.
  2. Measure the resistance of the transmission wire.

Standard resistance




  1. Check wire harness (transmission wire - ecm)

Toyota RAV4. Check wire harness (transmission wire - ecm)


  1. Disconnect the b30 ecm connector.
  2. Measure the resistance of the wire harness side connector.

Standard resistance




Replace ecm

  1. Inspect shift solenoid valve dsl

Toyota RAV4. Inspect shift solenoid valve dsl


  1. Remove the shift solenoid valve dsl.
  2. Measure the resistance between the solenoid valve terminal and solenoid valve body.

Standard resistance: 11 to 13 at 20°c (68°f)


  1. Connect the battery's positive (+) lead to the terminal of the solenoid valve connector, and the negative (-) lead to the solenoid body. Then check that the valve moves and makes an operating noise.

Ok: valve moves and makes operating noise.



Repair or replace transmission wire

Pressure control solenoid "d" electrical (shift solenoid valve slt)
Description Refer to dtc p2714 (see page ax-91). Monitor description When an open or short in the shift solenoid valve slt circuit is detected, the ecm interprets this as a fault. The ...

Automatic transaxle fluid
On-vehicle inspection Check transaxle fluid level Hint: Drive the vehicle so that the engine and transaxle are at normal operating temperature. Fluid temperature: 70 to 80°c (158 to 176°f ...

Other materials:

Diagnostic trouble code chart
If a dtc is displayed during the dtc check, check the circuit listed for the dtc in the table below (refer to the appropriate page). Hint: When the srs warning light remains on and the normal system code is output, a decrease in the source voltage is likely to occur. This malfunction is n ...

Defogging the windshield
Set the air outlet selector dial to position. Set the outside/recirculated air mode button to outside air mode if recirculated air mode is used. Perform the following operations accordingly: To adjust the fan speed, turn the fan speed control dial. To adjust the temperat ...

Data list / active test
Read data list Hint: Using the intelligent tester's data list allows switch, sensor, actuator and other item values to be read without out removing any parts. Reading the data list early in troubleshooting is one way to save time. Connect the intelligent tester (with can vim) to the ...

© 2011-2026 Copyright www.trav4.net