Lexus IS250 IS220d GSE20 ALE20 - STEERING COLUMN


POWER TILT AND POWER TELESCOPIC STEERING COLUMN SYSTEM - SYSTEM DESCRIPTION

MAIN COMPONENTS

Multiplex tilt & telescopic ECU


This ECU sends a control signal to the power tilt motor and the power telescopic motor, based on signals from each switch, to adjust the steering position.

Power tilt motor (with tilt position sensor)


This motor is activated by a signal from the multiplex tilt & telescopic ECU and adjusts the tilt position.


The tilt position sensor in the motor detects the tilt position by counting the number of pulses as the motor rotates.

Power telescopic motor (with telescopic position sensor)


This motor is activated by a signal from the multiplex tilt & telescopic ECU and adjusts the telescopic position. The telescopic position sensor in the motor detects the telescopic position by counting the number of pulses as the motor rotates.

MANUAL OPERATION

The tilt and telescopic positions can be adjusted as desired by operating the tilt and telescopic switch.

AUTO AWAY/RETURN FUNCTION

When the engine switch is turned off, the steering column moves forward, away from the driver, and also tilts up for easy exit and entry.

When the engine switch is turned on (IG), the steering column returns to the previously set position.

The auto away/return function can be prohibited by using the intelligent tester.

DRIVING POSITION MEMORY FUNCTION (with Seat Position Memory)

The steering column moves to the previously set position by pressing the seat memory switches.