DESCRIPTION
Each unit of the audio and visual system connected to the AVC-LAN (communication bus) transmits signals via AVC-LAN communication.
If a short to +B or short to ground occurs in an AVC-LAN communication line, the audio and visual system will not function normally because communication is not possible.
WIRING DIAGRAM
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
HINT:
The radio receiver assembly is the master unit.
PROCEDURE
1. | INSPECT RADIO RECEIVER ASSEMBLY |
(a) Remove the radio receiver assembly.
Click here
(b) Measure the resistance according to the value(s) in the table below. Standard Resistance:
|
|
NG | ![]() | REPLACE RADIO RECEIVER ASSEMBLY |
|
2. | CHECK HARNESS AND CONNECTOR (AVC-LAN CIRCUIT) |
(a) Disconnect the J148 radio receiver assembly connector.
(b) Disconnect the J156 stereo component amplifier assembly connector.
(c) Disconnect the J56 multi-display assembly connector.
(d) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
Tester Connection | Condition | Specified Condition |
---|---|---|
J148-17 (TX2+) - J156-8 (TX+) | Always | Below 1 Ω |
J148-18 (TX2-) - J156-7 (TX-) | Always | Below 1 Ω |
J148-5 (TX1+) - J56-7 (TX+) | Always | Below 1 Ω |
J148-6 (TX1-) - J56-19 (TX-) | Always | Below 1 Ω |
J148-17 (TX2+) or J156-8 (TX+) - Body ground | Always | 10 kΩ or higher |
J148-18 (TX2-) or J156-7 (TX-) - Body ground | Always | 10 kΩ or higher |
J148-5 (TX1+) or J56-7 (TX+) - Body ground | Always | 10 kΩ or higher |
J148-6 (TX1-) or J56-19(TX-) - Body ground | Always | 10 kΩ or higher |
NG | ![]() | REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
3. | INSPECT MALFUNCTIONING PARTS |
(a) Disconnect and reconnect each slave unit one by one until the master unit returns to normal.
HINT:
OK:
Master unit returns to normal.
OK | ![]() | REPLACE MALFUNCTIONING PARTS |
NG | ![]() | REPLACE RADIO RECEIVER ASSEMBLY |
Lexus RX (RX 350L, RX450h) 2016-2025 Repair Manual > Throttle Body: On-vehicle Inspection
ON-VEHICLE INSPECTION PROCEDURE 1. INSPECT THROTTLE BODY WITH MOTOR ASSEMBLY (a) Before cleaning, or after cleaning the throttle body with motor assembly and installing it to the vehicle, turn the engine switch on (IG) without operating the accelerator pedal sensor assembly. NOTICE: If the accelerat ...
Lexus RX (RX 350L, RX450h) 2016-2025 Owners Manual > For safe use: Before driving
Floor mat
Use only floor mats designed specifically for vehicles of the same model and
model year as your vehicle. Fix them securely in place onto the carpet.
1. Insert the retaining hooks (clips) into
the floor mat eyelets.
2. Turn the upper knob of each retaining
hook (clip) to secure the ...