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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Problem Symptoms Table
PROBLEM SYMPTOMS TABLE NOTICE:
Depending on the parts that are replaced during vehicle inspection or maintenance, performing initialization, registration or calibration may be needed. Refer to Precaution for Navigation System.
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When replacing the radio receiver assembly or navigatio
Data List / Active Test
DATA LIST / ACTIVE TEST DATA LIST NOTICE: In the table below, the values listed under "Normal Condition" are reference values. Do not depend solely on these reference values when deciding whether a part is faulty or not. HINT: Using the Techstream to read the Data List allows the values or states of
