| Last Modified: 08-21-2023 | 6.11:8.1.0 | Doc ID: RM100000001AYBK |
| Model Year Start: 2019 | Model: Avalon | Prod Date Range: [04/2018 - ] |
| Title: LIGHTING (EXT): LIGHTING SYSTEM (for Gasoline Model with Cornering Light): High Beam Headlight Circuit; 2019 - 2022 MY Avalon [04/2018 - ] | ||
|
High Beam Headlight Circuit |
DESCRIPTION
The headlight ECU sub-assembly controls the high beam headlights.
WIRING DIAGRAM
CAUTION / NOTICE / HINT
NOTICE:
-
If the headlight ECU sub-assembly LH has been replaced, it is necessary to synchronize the vehicle information the headlight ECU sub-assembly LH.
Click here
![2019 - 2022 MY Avalon [04/2018 - ]; LIGHTING (EXT): LIGHTING SYSTEM (for Gasoline Model with Cornering Light): INITIALIZATION](/t3Portal/stylegraphics/info.gif)
-
If the headlight assembly LH has been replaced, it is necessary to synchronize the vehicle information the headlight ECU sub-assembly LH.
Click here
PROCEDURE
|
1. |
CHECK LIGHTS |
(a) Check the illumination of each high beam lights.
|
Result |
Proceed to |
|---|---|
|
LH side high beam light does not illuminate |
A |
|
RH side high beam light does not illuminate |
B |
| B |
|
|
|
2. |
PERFORM ACTIVE TEST USING TECHSTREAM |
(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 / HL AutoLeveling / Active Test.
(e) Perform the Active Test according to the display on the Techstream.
Body Electrical > HL AutoLeveling > Active Test
|
Tester Display |
Measurement Item |
Control Range |
Diagnostic Note |
|---|---|---|---|
|
Headlight High Beam |
High beam headlights |
OFF or ON |
- |
Body Electrical > HL AutoLeveling > Active Test
|
Tester Display |
|---|
|
Headlight High Beam |
OK:
High beam headlight turn on.
| OK |
|
PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE
|
|
|
3. |
CHECK HEADLIGHT ASSEMBLY LH |
(a) Remove each headlight ECU sub-assembly, interchange the headlight assembly LH with RH and connect the connectors.
Click here
|
|
4. |
CHECK OPERATION (HIGH BEAM HEADLIGHT) |
(a) Check that the high beam headlight operates normally.
OK:
High beam headlight operates normally.
| OK |
|
| NG |
|
|
5. |
PERFORM ACTIVE TEST USING TECHSTREAM |
(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 / HL AutoLeveling (Sub) / Active Test.
(e) Perform the Active Test according to the display on the Techstream.
Body Electrical > HL AutoLeveling (Sub) > Active Test
|
Tester Display |
Measurement Item |
Control Range |
Diagnostic Note |
|---|---|---|---|
|
Headlight High Beam |
High beam headlights |
OFF or ON |
- |
Body Electrical > HL AutoLeveling (Sub) > Active Test
|
Tester Display |
|---|
|
Headlight High Beam |
OK:
High beam headlight turn on.
| OK |
|
PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE
|
|
|
6. |
CHECK HEADLIGHT ASSEMBLY RH |
(a) Remove each headlight ECU sub-assembly, interchange the headlight assembly RH with LH and connect the connectors.
Click here
|
|
7. |
CHECK OPERATION (HIGH BEAM HEADLIGHT) |
(a) Check that the high beam headlight operates normally.
OK:
High beam headlight operates normally.
| OK |
|
| NG |
|
|
|