Lexus ES manuals

Lexus ES: Utility

UTILITY

INITIALIZE THE CONNECTION INFORMATION OF A GATEWAY FUNCTION EQUIPPED ECU (BUS MONITOR ECU)

(a) Connect the Techstream to the DLC3.

(b) Turn the power switch on (IG).

(c) Turn the Techstream on.

(d) Enter the following menus:

  • for Body Electrical / Central Gateway / Utility / Initialization
Body Electrical > Central Gateway > Utility

Tester Display

Initialization

  • for Body Electrical / Main Body / Utility / Initialization
Body Electrical > Main Body > Utility

Tester Display

Initialization

(e) Initialize the ECU.

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 System Description

SYSTEM DESCRIPTION BRIEF DESCRIPTION (a) The Controller Area Network (CAN) is a serial data communication system for real time application. It is a vehicle multiplex communication system which has a h

 System Diagram

SYSTEM DIAGRAM (a) The CAN communication system is composed of 5 buses. CAN Main Bus Line Terminating Resistor CAN Branch Line * Gateway Function Equipped ECU Bus Monitor

 Parts Location

PARTS LOCATION ILLUSTRATION *1 SWING GRILLE ACTUATOR ASSEMBLY *2 MILLIMETER WAVE RADAR SENSOR ASSEMBLY *3 HEADLIGHT ECU SUB-ASSEMBLY RH *4 INVERTER WITH CONVERTER ASSEMBLY *5

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 Precaution

PRECAUTION PRECAUTION FOR DISCONNECTING CABLE FROM NEGATIVE BATTERY TERMINAL NOTICE: When disconnecting the cable from the negative (-) battery terminal, initialize the following systems after the cable is reconnected. System Name See Procedure Lane Control System (for Gasoline Model)

 Check Bus 4 Line for Short to GND

DESCRIPTION There may be a short circuit between one of the CAN bus lines and GND when there is no resistance between terminal 22 (CA2H) of the central gateway ECU (network gateway ECU) and terminal 4 (CG) of the DLC3, or terminal 7 (CA2L) of the central gateway ECU (network gateway ECU) and termina

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