Lexus RX (RX 350L, RX450h) 2016-2026 Repair Manual: System Description
SYSTEM DESCRIPTION
LIN COMMUNICATION SYSTEM DESCRIPTION
The LIN communication system is used for communication between the components in the tables below. If communication cannot be performed through LIN communication such as when there is an open or short in a communication line, the master control ECU of the relevant system will store a DTC. Refer to the table below about the communication bus lines and connected components.
HINT:
- Each component has a fail-safe function which operates in the event of a malfunction to protect the system and allow communication between other components to continue.
- In the following table, "○" indicates that the function applies, and "-" indicates that it does not.
| Component | Master Control | LIN Communication DTC Output Function |
|---|---|---|
| Main Body ECU (Multiplex Network Body ECU) | ○ | ○ |
| Power Window Regulator Motor Assembly (for Driver Door) | - | - |
| Power Window Regulator Motor Assembly (for Front Passenger Door) | - | - |
| Power Window Regulator Motor Assembly (for Rear LH Door) | - | - |
| Power Window Regulator Motor Assembly (for Rear RH Door) | - | - |
| Multiplex Network Master Switch Assembly | - | - |
| Sliding Roof ECU (Sliding Roof Drive Gear Sub-assembly)*1 | - | - |
| Sliding Roof ECU (Sliding Roof Drive Gear Assembly)*2 | - | - |
| Roof Sunshade ECU (Sliding Roof Drive Gear Assembly)*2 | - | - |
- *1: w/ Sliding Roof System
- *2: w/ Panoramic Moon Roof System
| Component | Master Control | LIN Communication DTC Output Function |
|---|---|---|
| Certification ECU (Smart Key ECU Assembly) | ○ | ○ |
| Steering Lock ECU (Steering Lock Actuator or Upper Bracket Assembly) | - | - |
| ID Code Box (Immobiliser Code ECU) | - | - |
System Diagram
SYSTEM DIAGRAM DOOR BUS LINES CERTIFICATION BUS LINES ...
How To Proceed With Troubleshooting
CAUTION / NOTICE / HINT HINT:
Use the following procedure to troubleshoot the LIN communication system.
*: Use the Techstream.
PROCEDURE 1. VEHICLE BROUGHT TO WORKSHOP
NEXT ...
Other materials:
Lexus RX (RX 350L, RX450h) 2016-2026 Repair Manual > Power Window Regulator Motor (for Front Door): Installation
INSTALLATION CAUTION / NOTICE / HINT HINT:
Use the same procedure for the RH side and LH side.
The following procedure is for the LH side.
PROCEDURE 1. PRECAUTION NOTICE: After turning the engine switch off, waiting time may be required before disconnecting the cable from the negative (-) ba ...
Lexus RX (RX 350L, RX450h) 2016-2026 Repair Manual > Audio And Visual System (for 8 Inch Display): CD cannot be Inserted / Played or CD is Ejected Right After Insertion
CAUTION / NOTICE / HINT NOTICE: Depending on the parts that are replaced during vehicle inspection or maintenance, performing initialization, registration or calibration may be needed. Refer to Precaution for Audio and Visual System. Click here PROCEDURE 1. CHECK IF A PROPER CD IS INSERTED ...
Lexus RX (RX 350L, RX450h) 2016-{YEAR} Owners Manual
- For your information
- Pictorial index
- For safety and security
- Instrument cluster
- Operation of each component
- Driving
- Lexus Display Audio system
- Interior features
- Maintenance and care
- When trouble arises
- Vehicle specifications
- For owners
Lexus RX (RX 350L, RX450h) 2016-{YEAR} Repair Manual
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