Toyota RAV4 manuals

Toyota RAV4 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:

Direct clutch
Components Disassembly Inspect pack clearance of direct clutch (see page ax-234) Remove direct multiple disc clutch disc Using a screwdriver, pry out the snap ring from the direct clutch drum. Remove the flange, 3 discs and 3 plates from the direct clutch drum. ...

Removal (2006/01- )
Remove front wheel Drain automatic transaxle fluid Drain the automatic transaxle fluid for u140f (see page ax-147). Drain the automatic transaxle fluid for u241e (see page ax-146). Drain the automatic transaxle fluid for u151f (see page ax-173). Remove front axle hub nut ( ...

Input speed sensor circuit no signal
Description This sensor detects the rotation speed of the turbine, which shows the input revolution of the transaxle. By comparing the input speed signal (nt) with the counter gear speed sensor signal (nc), the ecm detects the shift timing of the gears and controls the engine torque and ...

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