Lexus NX: Initialization

INITIALIZATION

NOTICE:

  • The necessary procedures (adjustment, calibration, initialization or registration) that must be performed after parts are removed and installed, or replaced during headlight ECU sub-assembly LH removal/installation are shown below.

    Performed Work or System Condition

    Necessary Procedures

    Proceed to

    Replacement of the headlight ECU sub-assembly LH and headlight assembly LH

    Synchronize the vehicle information

    Perform headlight ECU sub-assembly LH initialization

    Replacement of the rear height control sensor sub-assembly LH, removal and reinstallation of the rear height control sensor sub-assembly LH, replacement of the suspension, etc. have been performed

    Perform headlight ECU sub-assembly LH initialization

    Auxiliary battery terminal is disconnected and connected

    Steering sensor zero point calibration

  • If the steering sensor zero point calibration is not performed, the AFS (adaptive front-lighting system) and cornering lights may not operate correctly.
  • A new headlight ECU sub-assembly LH cannot operate until the vehicle information is registered.
  • After replacing the headlight ECU sub-assembly LH, it is necessary to perform vehicle information registration and initialization.
  • Even if the headlight ECU sub-assembly RH is replaced with a new one, vehicle information registration and initialization are not necessary.

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 Problem Symptoms Table

PROBLEM SYMPTOMS TABLE NOTICE: If the headlight ECU sub-assembly LH has been replaced, it is necessary to synchronize the vehicle information and initialize the headlight ECU sub-assembly LH. Click he

 Terminals Of Ecu

TERMINALS OF ECU CHECK MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU) AND INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY Click here CHECK HEADLIGHT ECU SUB-ASSEMBLY LH Click here CHECK HEADLIGHT ECU SUB-ASS

 Dtc Check / Clear

DTC CHECK / CLEAR CHECK DTC (a) Connect the Techstream to the DLC3. (b) Turn the power switch on (IG). (c) Turn the Techstream on. (d) Enter the following menus: Body Electrical / AFS / Trouble Codes.

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 Terminals Of Ecu

TERMINALS OF ECU CHECK FOLD SEAT CONTROL ECU (REAR RIGHT SEAT) (a) Disconnect the h3 and h4 fold seat control ECU (rear right seat) connectors. (b) Measure the resistance and voltage according to the value(s) in the table below. Terminal No. (Symbol) Wiring Color Terminal Description Condi

 Terminals Of Ecu

TERMINALS OF ECU CHECK COMBINATION METER ASSEMBLY (a) Disconnect the I10 combination meter assembly connector. (b) Measure the resistance and voltage according to the value(s) in the table below. Tester Connection Wiring Color Terminal Description Condition Specified Condition I10-21

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