DESCRIPTION
This circuit consists of the No. 2 clearance warning buzzer and clearance warning ECU assembly. An ECU-excited type buzzer is used. The ECU operates the buzzers using a sound pattern that changes depending on the distance to the obstacle.
WIRING DIAGRAM
PROCEDURE
1. | PERFORM ACTIVE TEST USING GTS (REAR BUZZER) |
(a) Connect the Techstream to the DLC3.
(b) Turn the engine switch on (IG).
(c) Turn the Techstream on.
(d) Enter the following menus: Body Electrical / Advanced Parking Guidance/ICS/Intuitive P/A / Active Test.
(e) Check that the rear buzzer operates by performing the Active Test.
Body Electrical > Advanced Parking Guidance/ICS/Intuitive P/A > Active Test Tester Display | Measurement Item | Control Range | Diagnostic Note |
---|---|---|---|
Rear Buzzer | No. 2 clearance warning buzzer | Stop or Operate | Confirm that the vehicle is stopped and the engine switch is on (IG) |
Tester Display |
---|
Rear Buzzer |
OK:
The No. 2 clearance warning buzzer sounds.
OK | ![]() | PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE |
|
2. | CHECK HARNESS AND CONNECTOR (CLEARANCE WARNING ECU ASSEMBLY - NO. 2 CLEARANCE WARNING BUZZER) |
(a) Disconnect the J38 clearance warning ECU assembly connector.
(b) Disconnect the R64 No. 2 clearance warning buzzer connector.
(c) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
Tester Connection | Condition | Specified Condition |
---|---|---|
J38-15 (BBZ) - R64-1 (Z+) | Always | Below 1 Ω |
J38-16 (ER) - R64-2 (Z-) | Always | Below 1 Ω |
J38-15 (BBZ) or R64-1 (Z+) - Body ground | Always | 10 kΩ or higher |
J38-16 (ER) or R64-2 (Z-) - Body ground | Always | 10 kΩ or higher |
NG | ![]() | REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
3. | REPLACE NO. 2 CLEARANCE WARNING BUZZER |
(a) Replace the No. 2 clearance warning buzzer with a new or known good one.
w/o Rear No. 2 Seat: Click here
w/ Rear No. 2 Seat: Click here
|
4. | PERFORM ACTIVE TEST USING TECHSTREAM (REAR BUZZER) |
(a) Connect the Techstream to the DLC3.
(b) Turn the engine switch on (IG).
(c) Turn the Techstream on.
(d) Enter the following menus: Body Electrical / Advanced Parking Guidance/ICS/Intuitive P/A / Active Test.
(e) Check that the rear buzzer operates by performing the Active Test.
Body Electrical > Advanced Parking Guidance/ICS/Intuitive P/A > Active Test Tester Display | Measurement Item | Control Range | Diagnostic Note |
---|---|---|---|
Rear Buzzer | No. 2 clearance warning buzzer | Stop or Operate | Confirm that the vehicle is stopped and the engine switch is on (IG) |
Tester Display |
---|
Rear Buzzer |
OK:
The No. 2 clearance warning buzzer sounds.
OK | ![]() | END |
NG | ![]() | REPLACE CLEARANCE WARNING ECU ASSEMBLY |
Lexus RX (RX 350L, RX450h) 2016-2025 Repair Manual > Audio And Visual System (for 12.3 Inch Display): Voice is not Recognized
PROCEDURE 1. CHECK CONDITION (a) While paying attention to the condition of the spoken voice command, perform a voice recognition operation. OK: Voice command is recognized normally. HINT:
When the voice command is recognized, the content of the voice command is displayed in the voice r ...
Lexus RX (RX 350L, RX450h) 2016-2025 Repair Manual > Navigation System: Stereo Jack Adapter Light does not Illuminate
DESCRIPTION Power is supplied to the No. 1 stereo jack adapter assembly illumination from the radio receiver assembly. WIRING DIAGRAM CAUTION / NOTICE / HINT NOTICE: Depending on the parts that are replaced during vehicle inspection or maintenance, performing initialization, registration or calibra ...