Lexus ES: 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 |
| Headlight unit assembly LH | AFS |
| B2413 | Headlight Swivel Motor RH |
| Headlight unit assembly RH | AFS |
| B2417 | Headlight Beam Level Control Motor LH |
| Headlight unit assembly LH | AFS |
| B2418 | Headlight Beam Level Control Motor RH |
| Headlight unit assembly RH | AFS |
WIRING DIAGRAM
PROCEDURE
| 1. | CLEAR DTC |
(a) Connect the Techstream to the DLC3.
(b) Turn the power 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
|
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| 2. | CHECK FOR DTC |
(a) Connect the Techstream to the DLC3.
(b) Turn the power 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 CodesOK:
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 | .gif) | USE SIMULATION METHOD TO CHECK |
| B | | REPLACE HEADLIGHT UNIT ASSEMBLY LH |
| C | | REPLACE HEADLIGHT UNIT ASSEMBLY RH |
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Inspection
INSPECTION CAUTION / NOTICE / HINT NOTICE:
Make sure the contact surface of the cam timing control motor with EDU assembly (the surface that contacts the No. 2 timing gear cover assembly) is free of foreign matter.
If the cam timing control motor with EDU assembly has been struck or dropped, re
How To Proceed With Troubleshooting
CAUTION / NOTICE / HINT HINT:
Before performing troubleshooting for the dynamic radar cruise control system, perform troubleshooting for the pre-collision system.
Click here
*: Use the Techstream.
PROCEDURE 1. VEHICLE BROUGHT TO WORKSHOP
NEXT 2. PRE-CHECK
