DESCRIPTION
The headlight unit (headlight leveling motor) receives a signal from the headlight control ECU sub-assembly to operate. The headlight control ECU sub-assembly receives a signal indicating the operating conditions of the headlight unit (headlight leveling motor).
DTC No. |
Detection Item |
DTC Detection Condition |
Trouble Area |
Note |
---|---|---|---|---|
B2417 |
Headlight Beam Level Control Motor LH Malfunction |
Malfunction in headlight leveling motor LH |
|
- |
B2418 |
Headlight Beam Level Control Motor RH Malfunction |
Malfunction in headlight leveling motor RH |
|
- |
WIRING DIAGRAM
CAUTION / NOTICE / HINT
NOTICE:
After the headlight ECU sub-assembly LH is replaced, vehicle information registration and initialization are necessary.
Click here
PROCEDURE
1. |
CLEAR DTC |
(a) Clear the DTCs.
Click here
|
2. |
CHECK FOR DTC |
(a) Turn the ignition switch to ON.
(b) Turn on the headlights using the headlight dimmer switch.
(c) Check for DTCs.
Click here
Result |
Proceed to |
---|---|
DTC B2417 and B2418 output does not occur |
A |
DTC B2417 output occurs |
B |
DTC B2418 output occurs |
C |
A | ![]() |
USE SIMULATION METHOD TO CHECK |
C | ![]() |
GO TO STEP 5 |
|
3. |
PERFORM ACTIVE TEST USING TECHSTREAM (DRIVE THE LEVELING MOTOR) |
(a) Connect the Techstream to the DLC3.
(b) Turn the ignition switch to ON.
(c) Turn the Techstream on.
(d) Enter the following menus: Body Electrical / HL AutoLeveling / Active Test.
(e) Read the Data List according to the display on the Techstream.
(f) Using the Techstream, perform the Active Test.
Click here
Tester Display |
Measurement Item |
Control Range |
Diagnostic Note |
---|---|---|---|
Drive The Leveling Motor |
Headlight leveling motor upward or downward operation |
Stop/Down/Up |
Perform the Active Test with the engine started and vehicle stopped |
Tester Display |
---|
Drive The Leveling Motor |
Result |
Proceed to |
---|---|
The Active Test is performed normally |
A |
The Active Test is not performed normally |
B |
A | ![]() |
REPLACE HEADLIGHT ECU SUB-ASSEMBLY LH |
|
4. |
CHECK HEADLIGHT UNIT ASSEMBLY LH (HEADLIGHT LEVELING MOTOR) |
(a) Temporarily replace the headlight unit assembly LH (headlight leveling motor) with a new or normally functioning one.
(b) Using the Techstream, perform the Active Test.
Click here
Tester Display |
Measurement Item |
Control Range |
Diagnostic Note |
---|---|---|---|
Drive The Leveling Motor |
Headlight leveling motor upward or downward operation |
Stop/Down/Up |
Perform the Active Test with the engine started and vehicle stopped |
Tester Display |
---|
Drive The Leveling Motor |
Result |
Proceed to |
---|---|
The Active Test is performed normally |
A |
The Active Test is not performed normally |
B |
A | ![]() |
END (HEADLIGHT UNIT ASSEMBLY LH [HEADLIGHT LEVELING MOTOR] WAS DEFECTIVE) |
B | ![]() |
REPLACE HEADLIGHT ECU SUB-ASSEMBLY LH |
5. |
PERFORM ACTIVE TEST USING TECHSTREAM (DRIVE THE LEVELING MOTOR) |
(a) Using the Techstream, perform the Active Test.
Click here
Tester Display |
Measurement Item |
Control Range |
Diagnostic Note |
---|---|---|---|
Drive The Leveling Motor |
Headlight leveling motor upward or downward operation |
Stop/Down/Up |
Perform the Active Test with the engine started and vehicle stopped |
Tester Display |
---|
Drive The Leveling Motor |
Result |
Proceed to |
---|---|
The Active Test is performed normally |
A |
The Active Test is not performed normally |
B |
A | ![]() |
REPLACE HEADLIGHT ECU SUB-ASSEMBLY LH |
|
6. |
CHECK HEADLIGHT UNIT ASSEMBLY RH (HEADLIGHT LEVELING MOTOR) |
(a) Temporarily replace the headlight unit assembly RH (headlight leveling motor) with a new or normally functioning one.
(b) Using the Techstream, perform the Active Test.
Click here
Tester Display |
Measurement Item |
Control Range |
Diagnostic Note |
---|---|---|---|
Drive The Leveling Motor |
Headlight leveling motor upward or downward operation |
Stop/Down/Up |
Perform the Active Test with the engine started and vehicle stopped |
Tester Display |
---|
Drive The Leveling Motor |
Result |
Proceed to |
---|---|
The Active Test is performed normally |
A |
The Active Test is not performed normally |
B |
A | ![]() |
END (HEADLIGHT UNIT ASSEMBLY RH [LEVELING MOTOR] WAS DEFECTIVE) |
B | ![]() |
REPLACE HEADLIGHT ECU SUB-ASSEMBLY LH |
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