Flex Lockup Clutch Control

In addition to the conventional lock-up timing control, flex lock-up clutch control is used.

This flex lock-up clutch control regulates solenoid valve SLU as an intermediate mode between the ON and OFF operations of the lock-up clutch.

During acceleration, flex lock-up clutch control operates when the gear position is the 2nd or higher and the shift lever is in the D, S6, S5 or S4 range position. During deceleration, it operates when the gear position is the 4th or higher and the shift lever is in the D, S6, S5 or S4 range position.

During acceleration, the partition control of the power transmission between the lock-up clutch and torque converter greatly boosts the transmission efficiency in accordance with the driving conditions, improving the fuel economy.

During deceleration, the lock-up clutch is made to operate. Therefore the fuel-cut area is expanded and fuel economy is improved.

By allowing flex lock-up clutch control to continue operating during gearshift, the smooth torque transmission has been obtained. As a result, the fuel economy and drivability have been improved.

Large t

Throttle Opening Angle

Engine Speed t

Solenoid Signal

Engine Speed t

Camry Lock Converter 1996

Solenoid Signal

Engine Coolant [ Temp. Sensor

Lock-up Control Valve cï3 c

Engine Coolant [ Temp. Sensor

Lock-up Control Valve cï3 c

ATF Temperature Sensor Solenoid Valve SLU

^ Flex Lock-up Operation '

Lock-up

Operating Range Flex Lock-up Operating Range (Acceleration)

Vehicle Speed

Large t

Throttle Opening Angle

High

Flex Lock-up Operating Range (Deceleration)

High

Flex Lock-up Operating Range (Deceleration)

^ Flex Lock-up Operation '

G1YCH32Y

Position or ^^^^ Range Gear ^^^^

D, S6

S5

S4

1st

X

X

X

2nd

3rd

4th

*

*

*

5th

*

*

6th

*

: Operates X: Does not operate —: Not applicable *: Flex Lock-up Clutch Control also operates when the vehicle is decelerated.

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  • Retu
    How to repaire torquerconverter lockup clutch for mk3?
    9 months ago

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