Lexus NX: System Description
SYSTEM DESCRIPTION
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. |
MANUAL OPERATION
(a) The tilt and telescopic positions can be adjusted as desired by operating the tilt and telescopic switch.
AUTO AWAY/RETURN FUNCTION
(a) When the power source is changed from on (ACC) or on (IG) to off, and the multiplex tilt and telescopic ECU receives a seat belt release signal, the steering wheel automatically tilts up and fully retracts.
(b) When the power source is changed from off to on (ACC) or on (IG), or the multiplex tilt and telescopic ECU receives a seat belt fastened signal, the steering wheel automatically returns to the previous position which was set before the power source was turned off.
(c) The auto away/return function can be prohibited by using the Techstream.
DRIVING POSITION MEMORY FUNCTION (W/ SEAT MEMORY)
(a) The system can memorize/recall three driving positions by operating the seat memory switch. Even if these positions are changed when a driver is getting in/out, it can recall the memory position by one-touch operation if the steering wheel column position and seat position of the driver are stored.
READ NEXT:
System Diagram
SYSTEM DIAGRAM Communication Table Transmitting ECU (Transmitter) Receiving ECU Signal Communication Method Main Body ECU (Multiplex Network Body ECU) Multiplex Tilt and Telescopic EC
How To Proceed With Troubleshooting
CAUTION / NOTICE / HINT HINT: *: Use the Techstream. PROCEDURE 1. VEHICLE BROUGHT TO WORKSHOP
NEXT 2. INSPECT AUXILIARY BATTERY VOLTAGE Standard voltage: 11 to 14 V
Customize Parameters
CUSTOMIZE PARAMETERS CUSTOMIZE POWER TILT AND POWER TELESCOPIC STEERING COLUMN SYSTEM HINT: The following items can be customized. NOTICE:
When the customer requests a change in a function, first m
SEE MORE:
Hybrid Powertrain Control Module (P0A1D-144)
DESCRIPTION The hybrid vehicle control ECU monitors its internal operation, it will store a DTC and perform fail-safe control if it detects the following malfunction. If the following DTC is output, replace the hybrid vehicle control ECU. DTC No. Detection Item DTC Detection Condition Troub
Steering Pad Switch Circuit
DESCRIPTION This circuit sends an operation signal from the steering pad switch assembly to the radio receiver assembly. If there is an open in the circuit, the audio system cannot be operated using the steering pad switch assembly. If there is a short in the circuit, the same condition as when a sw
