PROCEDURE
1. | CHECK NOISE CONDITION |
(a) Check from which direction the noise comes (front left or right, or rear left or right).
OK:
The location of the noise source can be determined.
NG | ![]() | GO TO STEP 3 |
|
2. | CHECK SPEAKERS |
(a) Check the installation conditions of the speaker units that are located near the noise source and that there are no cracks, scratches, deformation or other failures.
Result | Proceed to |
---|---|
No malfunction is found. | A |
A speaker is installed incorrectly. | B |
Foreign matter is in a speaker. | C |
A speaker cone paper is broken. | D |
B | ![]() | REINSTALL SPEAKER |
C | ![]() | REMOVE FOREIGN MATTER |
D | ![]() | REPLACE SPEAKER |
|
3. | CHECK NOISE CONDITIONS |
(a) Check the noise condition.
HINT:
The radio has a noise prevention function to reduce noise when listening to the radio. If a loud noise occurs, check whether the ground at the antenna mounting base and the noise prevention unit are installed and wired correctly.
Condition under which Noise Occurs | Noise Source |
---|---|
Noise increases when the accelerator pedal is depressed, but stops when the engine is stopped. | Generator |
Noise occurs during A/C or heater operation. | Blower motor |
Noise occurs when the horn switch is pressed and released or when pressed and held. | Horn |
Noise occurs synchronously with the turn signal blinking pattern. | Flasher |
Noise occurs during window washer operation. | Washer |
Noise occurs during wiper operation. | Wiper |
Noise occurs when the brake pedal is depressed. | Stop light switch |
Others | Static electricity |
HINT:
Result | Proceed to |
---|---|
The noise source cannot be determined. | A |
The noise source can be determined. | B |
A | ![]() | PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE |
B | ![]() | REPAIR OR REPLACE NOISE SOURCE |
Lexus RX (RX 350L, RX450h) 2016-2025 Repair Manual > Vehicle Stability Control System: Left Rear Wheel Speed Sensor Circuit Short to Battery (C050C12)
DESCRIPTION Refer to DTC C050C1F. Click here DTC No. Detection Item DTC Detection Condition Trouble Area C050C12 Left Rear Wheel Speed Sensor Circuit Short to Battery The speed sensor short signal is ON continuously for 0.5 seconds or more.
Rear speed sensor LH*1
Rear speed ...
Lexus RX (RX 350L, RX450h) 2016-2025 Repair Manual > Audio And Visual System (for 8 Inch Display): Microphone Circuit
DESCRIPTION
The radio receiver assembly and telephone microphone assembly are connected to each other using the microphone connection detection signal lines.
Using this circuit, the radio receiver assembly sends power to the telephone microphone assembly, and the telephone microphone assembly s ...