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Power Tilt & Telescopic Steering Column System (Diagnostics - Introduction): Overview Lexus LX J200

Steering Column 3 illustrations ~251 words

Scheme 42

Scheme 42: ILLUSTRATION

Scheme 43

Scheme 43: SYSTEM DIAGRAM

Scheme 44

Scheme 44
SenderReceiverSignalLine
Main Body ECUMultiplex Tilt and Telescopic ECUEngine switch signal Key switch signal Key signal for push start systemCAN
Multiplex Tilt and Telescopic ECUFront Power Seat Switch LH (Position Control ECU)Tilt and telescopic execution signal Tilt and telescopic completion signalCAN
Front Power Seat Switch LH (Position Control ECU)Multiplex Tilt and Telescopic ECUMemory command of memory 1 for driver seat Memory command of memory 2 for driver seat Play command of memory 1 for driver seat Play command of memory 2 for driver seat Start signal to play tilt and telescopic steering Stop signal to play tilt and telescopic steeringCAN
Combination Meter ECUMultiplex Tilt and Telescopic ECUVehicle speed signalCAN
Tilt and Telescopic Manual SwitchMultiplex Tilt and Telescopic ECUTilt and telescopic manual switch signalSerial

COMMUNICATION TABLE

SYSTEM DESCRIPTION

  1. FUNCTION OF MAIN COMPONENTS Component Function Multiplex tilt and telescopic ECU This ECU sends a control signal to the power tilt motor and power telescopic motor, based on signals from each switch, to adjust the steering position. Power tilt motor (Built-in tilt position sensor) This motor is activated by a signal from the multiplex tilt and 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 (Built-in telescopic position sensor) This motor is activated by a signal from the multiplex tilt and 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.
  2. MANUAL OPERATION The tilt and telescopic positions can be adjusted as desired by operating the tilt and telescopic switch.
  3. 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 ingress and egress. 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 Techstream.
  4. DRIVING POSITION MEMORY FUNCTION (with Seat Position Memory System) The steering column moves to the previously set position by pressing the seat memory switches.