RAV4 4-Door 4WD L4-2.0L (3S-FE) (1997)
Shift Solenoid: Description and Operation
Shift Solenoid "SLD" (Differential Lock Solenoid)
CIRCUIT DESCRIPTION
Shift solenoid valve SLD controls the oil pressure applied to the center differential clutch and maintains the limited slip differential effects at most
appropriate level.
The ECM determines optimum control pressure according to the signals from the throttle position sensor, front and rear transaxle revolution
sensor and control volume of current flow to the shift solenoid valve.
The amount of current flow to the solenoid valve is controlled by the (*) duty ratio of the ECM output signal. The higher the duty ratio becomes,
the higher the center differential control pressure becomes during the center differential control operation.