RM35X0E _59 Vehicle Exterior _079256 LIGHTING (EXT) _0396321 LIGHTING SYSTEM(w/ Headlight ECU) J

LIGHTING (EXT)  LIGHTING SYSTEM(w/ Headlight ECU)  High Beam Headlight Circuit  


DESCRIPTION

The headlight ECU sub-assembly controls the high beam headlights.

WIRING DIAGRAM

E371004E18
0.198,3.333 2.354,3.573 2.156,0.24 10 false Headlight ECU Sub-assembly 0.208,3.198 0.479,3.458 0.271,0.26 10 false B 0.917,1.344 1.667,1.583 0.75,0.24 10 false HI SOL+ 0.938,1.604 1.563,1.854 0.625,0.25 10 false HI SOL- 3,2.948 5.156,3.188 2.156,0.24 10 false Headlight Unit Assembly 4.76,2.417 6.573,2.74 1.813,0.323 10 false Headlight Sub-assembly 4.854,1.906 6.5,2.208 1.646,0.302 10 false Lo/Hi Beam Shade 1.552,1.198 1.823,1.458 0.271,0.26 10 false 19 1.552,1.49 1.823,1.75 0.271,0.26 10 false 11 4.75,2.26 5.021,2.521 0.271,0.26 10 false C 4.417,1.208 4.688,1.469 0.271,0.26 10 false 6 4.417,1.5 4.688,1.76 0.271,0.26 10 false 4

CAUTION / NOTICE / HINT

NOTICE:
·

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 hereVehicle Exterior>LIGHTING (EXT)>LIGHTING SYSTEM (w/ Headlight ECU)>INITIALIZATION

·

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

1.CHECK LIGHTS
a.

Check the illumination of each high beam lights.


Result:
Result Proceed to
LH side high beam light does not illuminate A
RH side high beam light does not illuminate B



A

2.PERFORM ACTIVE TEST USING GTS

B

6.PERFORM ACTIVE TEST USING GTS
2.PERFORM ACTIVE TEST USING GTS
a.

Connect the GTS to the DLC3.


b.

Turn the engine switch on (IG).


c.

Turn the GTS on.


d.

Enter the following menus: Body Electrical / HL AutoLeveling / Active Test.


e.

Perform the Active Test according to the display on the GTS.

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
50004 361 19
OK:

High beam headlights turn on.



Result:
Proceed to
OK
NG



OK

PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE

Click hereVehicle Exterior>LIGHTING (EXT)>LIGHTING SYSTEM (w/ Headlight ECU)>PROBLEM SYMPTOMS TABLE


NG

3.CHECK HEADLIGHT UNIT ASSEMBLY LH
3.CHECK HEADLIGHT UNIT ASSEMBLY LH
a.

Interchange the headlight unit assembly LH with RH and connect the connectors.

Click hereVehicle Exterior>LIGHTING (EXT)>HEADLIGHT ASSEMBLY (for LED Headlight)>DISASSEMBLY


Result:
Proceed to
NEXT



NEXT

4.CHECK OPERATION (HIGH BEAM HEADLIGHT)
4.CHECK OPERATION (HIGH BEAM HEADLIGHT)
a.

Check that the high beam headlight operates normally.

OK:

High beam headlight operates normally.



Result:
Proceed to
OK
NG



OK

REPLACE HEADLIGHT ECU SUB-ASSEMBLY LH

Click hereVehicle Exterior>LIGHTING (EXT)>HEADLIGHT ECU>REMOVAL


NG

5.INSPECT HEADLIGHT UNIT ASSEMBLY LH
5.INSPECT HEADLIGHT UNIT ASSEMBLY LH
E419176C03
1.708,0.563 2.073,0.802 0.365,0.24 4.802,0.531 5.167,0.771 0.365,0.24 1.042,2.01 1.344,1.604 true 2.438,2.01 2.313,1.615 true 0.885,0.49 1.198,0.688 0.313,0.198 10 false *a 4.521,0.563 4.833,0.76 0.313,0.198 10 false *b 1.854,0.604 2.167,0.802 0.313,0.198 10 false B 4.958,0.552 5.271,0.75 0.313,0.198 10 false D 0.896,2.052 1.771,2.271 0.875,0.219 10 false HI SOL- 2.438,2.052 3.146,2.375 0.708,0.323 10 false HI SOL+
*a Component without harness connected
(to Headlight ECU Sub-assembly LH) 		*b Component without harness connected
(to Headlight Sub-assembly LH)


a.

Remove the headlight assembly LH.

Click hereVehicle Exterior>LIGHTING (EXT)>HEADLIGHT ASSEMBLY (for LED Headlight)>REMOVAL


b.

Remove the headlight sub-assembly LH.

Click hereVehicle Exterior>LIGHTING (EXT)>HEADLIGHT ASSEMBLY (for LED Headlight)>DISASSEMBLY


c.

Measure the resistance according to the value(s) in the table below.

Standard Resistance:
Tester Connection Wiring Color Condition Specified Condition
B-19 (HI SOL+) - C-6 W Always Below 1 Ω
B-11 (HI SOL-) - C-4 BR Always Below 1 Ω



Result:
Proceed to
OK
NG



OK

REPLACE HEADLIGHT SUB-ASSEMBLY LH

Click hereVehicle Exterior>LIGHTING (EXT)>HEADLIGHT ASSEMBLY (for LED Headlight)>DISASSEMBLY


NG

REPLACE HEADLIGHT UNIT ASSEMBLY LH

Click hereVehicle Exterior>LIGHTING (EXT)>HEADLIGHT ASSEMBLY (for LED Headlight)>DISASSEMBLY


6.PERFORM ACTIVE TEST USING GTS
a.

Connect the GTS to the DLC3.


b.

Turn the engine switch on (IG).


c.

Turn the GTS on.


d.

Enter the following menus: Body Electrical / HL AutoLeveling (Sub) / Active Test.


e.

Perform the Active Test according to the display on the GTS.

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
50004 414 4
OK:

High beam headlights turn on.



Result:
Proceed to
OK
NG



OK

PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE

Click hereVehicle Exterior>LIGHTING (EXT)>LIGHTING SYSTEM (w/ Headlight ECU)>PROBLEM SYMPTOMS TABLE


NG

7.CHECK HEADLIGHT UNIT ASSEMBLY RH
7.CHECK HEADLIGHT UNIT ASSEMBLY RH
a.

Interchange the headlight unit assembly RH with LH and connect the connectors.

Click hereVehicle Exterior>LIGHTING (EXT)>HEADLIGHT ASSEMBLY (for LED Headlight)>DISASSEMBLY


Result:
Proceed to
NEXT



NEXT

8.CHECK OPERATION (HIGH BEAM HEADLIGHT)
8.CHECK OPERATION (HIGH BEAM HEADLIGHT)
a.

Check that the high beam headlight operates normally.

OK:

High beam headlight operates normally.



Result:
Proceed to
OK
NG



OK

REPLACE HEADLIGHT ECU SUB-ASSEMBLY RH

Click hereVehicle Exterior>LIGHTING (EXT)>HEADLIGHT ECU>REMOVAL


NG

9.INSPECT HEADLIGHT UNIT ASSEMBLY RH
9.INSPECT HEADLIGHT UNIT ASSEMBLY RH
E419176C03
1.708,0.563 2.073,0.802 0.365,0.24 4.802,0.531 5.167,0.771 0.365,0.24 1.042,2.01 1.344,1.604 true 2.438,2.01 2.313,1.615 true 0.885,0.49 1.198,0.688 0.313,0.198 10 false *a 4.521,0.563 4.833,0.76 0.313,0.198 10 false *b 1.854,0.604 2.167,0.802 0.313,0.198 10 false B 4.958,0.552 5.271,0.75 0.313,0.198 10 false D 0.896,2.052 1.771,2.271 0.875,0.219 10 false HI SOL- 2.438,2.052 3.146,2.375 0.708,0.323 10 false HI SOL+
*a Component without harness connected
(to Headlight ECU Sub-assembly RH) 		*b Component without harness connected
(to Headlight Sub-assembly RH)


a.

Remove the headlight assembly RH.

Click hereVehicle Exterior>LIGHTING (EXT)>HEADLIGHT ASSEMBLY (for LED Headlight)>REMOVAL


b.

Remove the headlight sub-assembly RH.

Click hereVehicle Exterior>LIGHTING (EXT)>HEADLIGHT ASSEMBLY (for LED Headlight)>DISASSEMBLY


c.

Measure the resistance according to the value(s) in the table below.

Standard Resistance:
Tester Connection Wiring Color Condition Specified Condition
B-19 (HI SOL+) - C-6 W Always Below 1 Ω
B-11 (HI SOL-) - C-4 BR Always Below 1 Ω



Result:
Proceed to
OK
NG



OK

REPLACE HEADLIGHT SUB-ASSEMBLY RH

Click hereVehicle Exterior>LIGHTING (EXT)>HEADLIGHT ASSEMBLY (for LED Headlight)>DISASSEMBLY


NG

REPLACE HEADLIGHT UNIT ASSEMBLY RH

Click hereVehicle Exterior>LIGHTING (EXT)>HEADLIGHT ASSEMBLY (for LED Headlight)>DISASSEMBLY