DESCRIPTION
WIRING DIAGRAM
for Multiple Beam Headlight
for Single Beam Headlight
CAUTION / NOTICE / HINT
NOTICE:
Click here
Click here
PROCEDURE
1. | CONFIRM MODEL |
(a) Choose the model to be inspected.
Result | Proceed to |
---|---|
for Multiple Beam Headlight | A |
for Single Beam Headlight | B |
B | ![]() | GO TO STEP 3 |
|
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 / AFS / Active Test.
(e) Perform the Active Test according to the display on the Techstream.
Body Electrical > AFS > Active Test Tester Display | Measurement Item | Control Range | Diagnostic Note |
---|---|---|---|
Clearance Light | Parking lights | OFF or ON | - |
Daytime Running Light | Daytime running lights | OFF or ON | This Active Test can only be performed when the customization item DRL function is set to "ON" using the Techstream. |
Tester Display |
---|
Clearance Light |
Tester Display |
---|
Daytime Running Light |
OK:
Parking lights and daytime running lights illuminate.
Result | Proceed to |
---|---|
OK | A |
NG (LH side parking light and daytime running light does not illuminate) | B |
NG (RH side parking light and daytime running light does not illuminate) | C |
A | ![]() | PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE |
B | ![]() | GO TO STEP 4 |
C | ![]() | GO TO STEP 6 |
3. | 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 |
---|---|---|---|
Clearance Light | Parking lights | OFF or ON | - |
Daytime Running Light | Daytime running lights | OFF or ON | This Active Test can only be performed when the customization item DRL function is set to "ON" using the Techstream. |
Tester Display |
---|
Clearance Light |
Tester Display |
---|
Daytime Running Light |
OK:
Parking lights and daytime running lights illuminate.
Result | Proceed to |
---|---|
OK | A |
NG (LH side parking light and daytime running light does not illuminate) | B |
NG (RH side parking light and daytime running light does not illuminate) | C |
A | ![]() | PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE |
C | ![]() | GO TO STEP 6 |
|
4. | CHECK HEADLIGHT UNIT LH |
(a) Interchange the headlight unit LH with RH and connect the connectors.
Click here
|
5. | CHECK OPERATION (PARKING LIGHTS AND DAYTIME RUNNING LIGHTS) |
(a) Check the operation of the parking lights and daytime running lights.
OK:
The parking lights and daytime running lights operate normally.
Result | Proceed to |
---|---|
OK | A |
NG (for TMC Made) | B |
NG (for TMMC Made) | C |
A | ![]() | REPLACE NO. 1 HEADLIGHT ECU SUB-ASSEMBLY LH |
B | ![]() | REPLACE HEADLIGHT UNIT LH |
C | ![]() | REPLACE HEADLIGHT ASSEMBLY LH |
6. | CHECK HEADLIGHT UNIT RH |
(a) Interchange the headlight unit RH with LH and connect the connectors.
Click here
|
7. | CHECK OPERATION (PARKING LIGHTS AND DAYTIME RUNNING LIGHTS) |
(a) Check the operation of the parking lights and daytime running lights.
OK:
The parking lights and daytime running lights operate normally.
Result | Proceed to |
---|---|
OK | A |
NG (for TMC Made) | B |
NG (for TMMC Made) | C |
A | ![]() | REPLACE NO. 1 HEADLIGHT ECU SUB-ASSEMBLY RH |
B | ![]() | REPLACE HEADLIGHT UNIT RH |
C | ![]() | REPLACE HEADLIGHT ASSEMBLY RH |
Lexus RX (RX 350L, RX450h) 2016-2025 Repair Manual > Power Back Door System (w/ Outside Door Control Switch): Freeze Frame Data
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Lexus RX (RX 350L, RX450h) 2016-2025 Repair Manual > Airbag System: How To Proceed With Troubleshooting
CAUTION / NOTICE / HINT HINT:
Use the following procedure to troubleshoot the airbag system.
*: Use the Techstream.
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