Last Modified: 05-13-2024 |
6.11:8.1.0 |
Doc ID: RM100000001AULU |
Model Year Start: 2019 |
Model: GR Corolla |
Prod Date Range: [06/2018 - 09/2022] |
Title: LIGHTING (EXT): LIGHTING SYSTEM (for Gasoline Model with AFS): High Beam Headlight Circuit; 2019 - 2022 MY Corolla Corolla Hatchback GR Corolla [06/2018 - 09/2022] |
High Beam Headlight Circuit
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DESCRIPTION
The headlight ECU sub-assembly controls the high beam headlights.
WIRING DIAGRAM
CAUTION / NOTICE / HINT
NOTICE:
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If the headlight ECU sub-assembly LH has been replaced, it is necessary to synchronize the vehicle information and initialize the headlight ECU sub-assembly LH.
Click here
-
When replacing the headlight ECU sub-assembly LH, always replace it with a new one. If a headlight ECU sub-assembly LH which was installed to another vehicle is used, the information stored in it will not match the information from the vehicle and a DTC may be stored.
PROCEDURE
(a) Check the illumination of each high beam lights.
Result
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Proceed to
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LH side high beam light does not illuminate
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A
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RH side high beam light does not illuminate
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B
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A
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2.
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PERFORM ACTIVE TEST USING TECHSTREAM
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(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 / Active Test.
(e) Perform the Active Test according to the display on the Techstream.
Body Electrical > AFS > Active Test
Tester Display
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Measurement Item
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Control Range
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Diagnostic Note
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Headlight High Beam
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High beam headlights
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OFF or ON
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-
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Body Electrical > AFS > Active Test
Tester Display
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Headlight High Beam
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OK:
High beam headlight turn on.
NG
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|
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3.
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CHECK HEADLIGHT UNIT ASSEMBLY LH
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(a) Interchange the headlight unit assembly LH with RH and connect the connectors.
Click here
NEXT
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|
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4.
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CHECK OPERATION (HIGH BEAM HEADLIGHT)
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(a) Check that the high beam headlight operates normally.
OK:
High beam headlight operates normally.
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 / AFS (Sub) / Active Test.
(e) Perform the Active Test according to the display on the Techstream.
Body Electrical > AFS (Sub) > Active Test
Tester Display
|
Measurement Item
|
Control Range
|
Diagnostic Note
|
Headlight High Beam
|
High beam headlights
|
OFF or ON
|
-
|
Body Electrical > AFS (Sub) > Active Test
Tester Display
|
Headlight High Beam
|
OK:
High beam headlight turn on.
NG
|
|
|
6.
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CHECK HEADLIGHT UNIT ASSEMBLY RH
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(a) Interchange the headlight unit assembly RH with LH and connect the connectors.
Click here
NEXT
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|
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7.
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CHECK OPERATION (HIGH BEAM HEADLIGHT)
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(a) Check that the high beam headlight operates normally.
OK:
High beam headlight operates normally.
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