Lexus ES manuals

Lexus ES: Headlight Swivel Motor LH (B2412,B2413,B2417,B2418)

Lexus ES (XZ10) Service Manual / Vehicle Exterior / Lighting (ext) / Lighting System (for Gasoline Model) / Headlight Swivel Motor LH (B2412,B2413,B2417,B2418)

DESCRIPTION

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

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

The headlight swivel motor and headlight 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 motor and headlight leveling motor is malfunctioning.

DTC No.

Detection Item

DTC Detection Condition

Trouble Area

DTC Output from

B2412

Headlight Swivel Motor LH

  • The engine switch is on (IG).
  • Headlight swivel motor malfunction detected
  • -

Headlight unit assembly LH

Headlight ECU sub-assembly LH

B2413

Headlight Swivel Motor RH

  • The engine switch is on (IG).
  • Headlight swivel motor malfunction detected
  • -

Headlight unit assembly RH

Headlight ECU sub-assembly LH

B2417

Headlight Beam Level Control Motor LH

  • The engine switch is on (IG).
  • Headlight leveling motor malfunction detected
  • -

Headlight unit assembly LH

Headlight ECU sub-assembly LH

B2418

Headlight Beam Level Control Motor RH

  • The engine switch is on (IG).
  • Headlight leveling motor malfunction detected
  • -

Headlight unit assembly RH

Headlight ECU sub-assembly LH

WIRING DIAGRAM

PROCEDURE

1.

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

2.

CHECK FOR 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) Check for DTCs.

Body Electrical > AFS > Trouble Codes

OK:

DTC B2412, B2413, B2417 and B2418 are not output.

Result

Proceed to

OK

A

NG (DTC B2412 or B2417 is output)

B

NG (DTC B2413 or B2418 is output)

C

A

USE SIMULATION METHOD TO CHECK

B

REPLACE HEADLIGHT UNIT ASSEMBLY LH

C

REPLACE HEADLIGHT UNIT ASSEMBLY RH

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