Lexus NX: 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 ECU

  • Auto away/return state signal
  • 3Tilt and telescopic position request signal
  • Driver position data signal* (Driver seat, tilt and telescopic steering and mirror)
  • IG SW signal
  • Front seat inner belt (for driver) buckle switch signal

CAN

Front Power Seat Switch LH

Multiplex Tilt and Telescopic ECU

  • Play command signal of memory 1 for driver seat*
  • Start signal to play tilt and telescopic steering*
  • Stop signal to play memory*

Combination Meter Assembly

Multiplex Tilt and Telescopic ECU

Vehicle speed signal

Multiplex Tilt and Telescopic ECU

Main Body ECU (Multiplex Network Body ECU)

State signal of tilt and telescopic steering

Multiplex Tilt and Telescopic ECU

Front Power Seat Switch LH

  • Tilt and telescopic recall and execution signal
  • Tilt and telescopic recall and end signal
  • *: w/ Seat Memory

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 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

 Problem Symptoms Table

PROBLEM SYMPTOMS TABLE HINT: Use the table below to help determine the cause of problem symptoms. If multiple suspected areas are listed, the potential causes of the symptoms are listed in order of

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 Installation

INSTALLATION PROCEDURE 1. INSTALL CAMSHAFT TIMING OIL CONTROL VALVE ASSEMBLY (a) Apply a light coat of engine oil to a new O-ring and install the O-ring to the camshaft timing oil control valve assembly. NOTICE: Do not damage the O-ring when installing. HINT: An O-ring is already installed in a new

 ID BOX EEPROM Malfunction (B2790)

DESCRIPTION When an internal malfunction occurs in the ID code box (immobiliser code ECU), the certification ECU (smart key ECU assembly) stores this DTC. DTC No. Detection Item DTC Detection Condition Trouble Area Note B2790 ID BOX EEPROM Malfunction An internal malfunction occur

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