Lexus RX (RX 350L, RX450h) 2016-2025 Repair Manual: Vehicle Speed Sensor (B2415)

DESCRIPTION

The No. 1 headlight ECU sub-assembly LH receives speed signals from the skid control ECU (brake actuator assembly) via CAN communication and performs light control.

DTC No.	Detection Item	DTC Detection Condition	Trouble Area	DTC Output from
B2415	Vehicle Speed Sensor	The engine switch is on (IG). Wheel speed sensor invalid signals are continuously received from the skid control ECU (brake actuator assembly) 5 seconds or more	Vehicle stability control system	No. 1 headlight ECU sub-assembly LH

WIRING DIAGRAM

PROCEDURE

1.	CONFIRM MODEL

(a) Choose the model to be inspected.

Result	Proceed to
for Multiple Beam Headlight	A
for Single Beam Headlight	B

B

GO TO STEP 4

A

2.

CLEAR DTC

(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 / AFS / Trouble Codes.

(e) Clear the DTCs.

Body Electrical > AFS > Clear DTCs

NEXT

3.	CHECK FOR DTC

(a) Connect the Techstream to the DLC3.

(b) Turn the engine switch on (IG).

(c) Wait 10 seconds or more.

(d) Turn the Techstream on.

(e) Enter the following menus: Body Electrical / AFS / Trouble Codes.

(f) Check for DTCs.

Body Electrical > AFS > Trouble Codes

OK:

DTC B2415 is not output.

OK

USE SIMULATION METHOD TO CHECK

NG

GO TO VEHICLE STABILITY CONTROL SYSTEM

4.

CLEAR DTC

(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 / HL AutoLeveling / Trouble Codes.

(e) Clear the DTCs.

Body Electrical > HL AutoLeveling > Clear DTCs

NEXT

5.	CHECK FOR DTC

(a) Connect the Techstream to the DLC3.

(b) Turn the engine switch on (IG).

(c) Wait 10 seconds or more.

(d) Turn the Techstream on.

(e) Enter the following menus: Body Electrical / HL AutoLeveling / Trouble Codes.

(f) Check for DTCs.

Body Electrical > HL AutoLeveling > Trouble Codes

OK:

DTC B2415 is not output.

OK

USE SIMULATION METHOD TO CHECK

NG

GO TO VEHICLE STABILITY CONTROL SYSTEM