Lexus NX manuals

Lexus NX: Headlight Swivel Motor LH (B2412,B2413)

Lexus NX Service Manual / Vehicle Exterior / Lighting (ext) / Afs (adaptive Front-lighting System) / Headlight Swivel Motor LH (B2412,B2413)

DESCRIPTION

The headlight ECU sub-assembly LH sends automatic headlight beam level control signals to each headlight swivel and leveling motor via LIN communication.

Each headlight ECU sub-assembly and headlight swivel and leveling motor communicate via LIN communication.

The headlight swivel and leveling motor operates according to power supplied and automatic headlight beam level control signals from its respective headlight ECU sub-assembly and sends its operating state to the headlight ECU sub-assembly.

The headlight ECU sub-assembly LH stores a DTC if it detects that a headlight swivel and leveling motor is malfunctioning.

DTC No.

Detection Item

DTC Detection Condition

Trouble Area

B2412

Headlight Swivel Motor LH
  • The power switch is on (IG).
  • Headlight swivel and leveling motor LH malfunction detected
  • -

Headlight unit assembly LH

B2413

Headlight Swivel Motor RH
  • The power switch is on (IG).
  • Headlight swivel and leveling motor RH malfunction detected
  • -

Headlight unit assembly RH

WIRING DIAGRAM

CAUTION / NOTICE / HINT

NOTICE:

If the headlight ECU sub-assembly LH has been replaced, it is necessary to synchronize the vehicle information and initialize the headlight ECU sub-assembly LH.

Click here

PROCEDURE

1.

CHECK FOR DTC

(a) Clear the DTCs.

Click here

Body Electrical > AFS > Clear DTCs

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

(c) Check for DTCs.

Click here

Body Electrical > AFS > Trouble Codes

OK:

DTC B2412 and B2413 are not outputs.

Result

Proceed to

OK

A

NG (DTC B2412 is output)

B

NG (DTC B2413 is output)

C
A

USE SIMULATION METHOD TO CHECK

B

REPLACE HEADLIGHT UNIT ASSEMBLY LH

C

REPLACE HEADLIGHT UNIT ASSEMBLY RH

READ NEXT:

 Automatic Headlight Beam Level Control System (for Triple Beam Headlight)

 Parts Location

PARTS LOCATION ILLUSTRATION *1 REAR HEIGHT CONTROL SENSOR SUB-ASSEMBLY LH *2 BRAKE BOOSTER WITH MASTER CYLINDER ASSEMBLY (SKID CONTROL ECU) *3 HEADLIGHT ASSEMBLY LH - HEADLIGHT ECU SUB

 System Diagram

SYSTEM DIAGRAM

SEE MORE:

 Dtc Check / Clear

DTC CHECK / CLEAR CHECK DTC AND FREEZE FRAME DATA (a) Turn the power switch off. (b) Connect the Techstream to the DLC3. (c) Turn the power switch on (IG) and the Techstream on. (d) Enter the following menus: Chassis / Electric Parking Brake / Trouble Codes. (e) Check for DTC. Chassis > Electric

 Inspection

INSPECTION PROCEDURE 1. INSPECT FRONT NO. 1 SPEAKER ASSEMBLY (a) Measure the resistance according to the value(s) in the table below. Standard Resistance: for 8 Speakers Tester Connection Condition Specified Condition 1 - 2 Always 4 Ω for 10 Speakers Tester Connection Con

© 2016-2025 Copyright www.lexunx.com