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Power Tilt & Telescopic Steering Column (Diagnostics - Introduction): Overview Lexus HS I

Steering Column 3 illustrations ~309 words

Scheme 58

Scheme 58: ILLUSTRATION

Scheme 59

Scheme 59: ILLUSTRATION

Scheme 60

Scheme 60: SYSTEM DIAGRAM
Transmitting ECU (Transmitter)Receiving ECUSignalCommunication Method
Main Body ECU (Multiplex Network Body ECU)Multiplex Tilt and Telescopic ECUAuto away/return state signal Tilt and telescopic position request Driver position data (Driver seat, tilt and telescopic and mirror) IG SW signalCAN
Position Control ECU and Switch AssemblyMultiplex Tilt and Telescopic ECUDriver seat memory recall command signal Tilt and telescopic memory recall permit signal Tilt and telescopic memory recall prohibit signal
Combination MeterMultiplex Tilt and Telescopic ECUVehicle speed signal
Multiplex Tilt and Telescopic ECUMain Body ECU (Multiplex Network Body ECU)State signal of tilt and telescopic
Multiplex Tilt and Telescopic ECUPosition Control ECU and Switch AssemblyTilt and telescopic memory recall start signal Tilt and telescopic memory recall completed signal

COMMUNICATION TABLE

SYSTEM DESCRIPTION

  1. FUNCTION OF MAIN COMPONENTS Component Function Multiplex tilt and telescopic ECU This ECU sends a control signal to the tilt motor and telescopic motor, based on signals from each switch, to adjust the steering position. 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. 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 power switch is turned off and the driver seat belt is not attached, the steering column moves forward, away from the driver, and also tilts up for easy ingress and egress. When the power switch is turned on (IG), the power switch is turned on (ACC) or the driver seat belt is attached, 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 system can memorize or recall three driving positions when a seat memory switch is operated. If steering wheel and seat positions are stored in memory, the system can recall these positions when a memory switch is operated, even if these positions have changed due to a driver getting in or it.

See also:
REMOVAL