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 > Quarter Window Glass (w/ Rear No. 2 Seat): Components
COMPONENTS ILLUSTRATION *A for RH Side *B for LH Side *1 FRONT DECK SIDE TRIM COVER *2 REAR DOOR INSIDE SCUFF PLATE *3 REAR DOOR SCUFF PLATE *4 REAR SEAT OUTER TRACK BRACKET COVER LH *5 REAR SEAT OUTER TRACK BRACKET COVER RH *6 REAR SEAT SIDE GARNISH ILLUST ...
Lexus RX (RX 350L, RX450h) 2016-2026 Repair Manual > Steering Wheel: Installation
INSTALLATION CAUTION / NOTICE / HINT NOTICE:
Do not replace the spiral cable with sensor sub-assembly with the battery connected and the engine switch on (IG).
Do not rotate the spiral cable with sensor sub-assembly without the steering wheel assembly installed, with the battery connected and t ...
Lexus RX (RX 350L, RX450h) 2016-{YEAR} Owners Manual
- For your information
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- Instrument cluster
- Operation of each component
- Driving
- Lexus Display Audio system
- Interior features
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- When trouble arises
- Vehicle specifications
- For owners
Lexus RX (RX 350L, RX450h) 2016-{YEAR} Repair Manual
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