Lexus ES: Precaution
PRECAUTION
PRECAUTION FOR DISCONNECTING CABLE FROM NEGATIVE BATTERY TERMINAL
NOTICE:
When disconnecting the cable from the negative (-) battery terminal, initialize the following system(s) after the cable is reconnected:
| System | See Procedure |
|---|---|
| Lane Control System (for Gasoline Model) | |
| Parking Support Brake System (for Gasoline Model) | |
| Parking Assist Monitor System (for Gasoline Model) | |
| Panoramic View Monitor System (for Gasoline Model) | |
| Pre-collision System (for Gasoline Model) | |
| Power Trunk Lid System (for Gasoline Model) | |
| Lighting System (for Gasoline Model) |
HANDLING PRECAUTIONS
(a) When handling electronic parts:
(1) Avoid any impact to electronic parts such as ECUs and relays. Replace these parts with new ones if dropped or subjected to a severe blow.
(2) Do not expose any electronic parts to high temperatures or humidity.
(3) Do not touch the connector terminals in order to prevent deformation or malfunctions due to static electricity.
HANDLING PRECAUTIONS FOR SRS AIRBAG SYSTEM
CAUTION:
This vehicle is equipped with a Supplemental Restraint System (SRS). Failure to carry out service operations in the correct sequence could cause the SRS to unexpectedly deploy during servicing. This may cause a serious accident.
Before servicing (including inspection, replacement, removal and installation of parts), be sure to read the precautionary notices for Supplemental Restraint System.
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Parts Location
PARTS LOCATION ILLUSTRATION *1 TILT AND TELESCOPIC SWITCH *2 STEERING COLUMN ASSEMBLY - TILT MOTOR - TELESCOPIC MOTOR *3 NO. 1 ENGINE ROOM RELAY BLOCK AND NO. 1 JUNCTION BLOCK ASSEMBLY
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
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 (steering column assembly) and telescop
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Terminals Of Ecu
TERMINALS OF ECU MULTIPLEX TILT AND TELESCOPIC ECU *a Component with harness connected (Multiplex Tilt and Telescopic ECU) - - (a) Measure the voltage and resistance according to the value(s) in the table below. HINT: Inspect the connectors from the back side while the connectors are co
Problem Symptoms Table
PROBLEM SYMPTOMS TABLE NOTICE:
Before replacing the main body ECU (multiplex network body ECU), refer to Registration.
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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.*1
