RM3660EC _59 Vehicle Exterior _080784 LIGHTING (EXT) _0600056 LIGHTING SYSTEM(except NR Series Engine) J

LIGHTING (EXT)  LIGHTING SYSTEM(except NR Series Engine)  High Beam Headlight Circuit  


DESCRIPTION

The main body ECU (multiplex network body ECU) controls the high beam headlights.

WIRING DIAGRAM

for TFTM Made


E517160E01
1.323,2.375 3.104,2.646 1.781,0.271 10 false Headlight Assembly LH 2.813,3.385 3.75,3.573 0.938,0.188 10 false A165 1.281,3.854 3.063,4.125 1.781,0.271 10 false Headlight Assembly RH 5.448,3.625 5.75,3.854 0.302,0.229 10 false I85 5.438,3.792 7.073,4.281 1.635,0.49 10 false Main Body ECU (Multiplex Network Body ECU) 5.75,0.74 6.073,1.052 0.323,0.313 10 false 22 6.01,0.729 6.406,0.917 0.396,0.188 10 false DIM 1.042,1.74 1.198,1.938 0.156,0.198 10 false 4 3.385,1.729 3.542,1.927 0.156,0.198 10 false 6 1.042,3.198 1.198,3.396 0.156,0.198 10 false 4 2.948,3.188 3.104,3.385 0.156,0.198 10 false 2 1.344,1.917 1.5,2.115 0.156,0.198 10 false E 2.552,1.927 2.875,2.135 0.323,0.208 10 false HI 1.344,3.385 1.5,3.583 0.156,0.198 10 false E 2.552,3.375 2.875,3.583 0.323,0.208 10 false HI 3.25,3.385 4.188,3.573 0.938,0.188 10 false A159 2.813,1.927 3.75,2.115 0.938,0.188 10 false A166 3.271,1.927 4.208,2.115 0.938,0.188 10 false A160 0.458,1.927 1.396,2.115 0.938,0.188 10 false A160 0.917,1.927 1.854,2.115 0.938,0.188 10 false A166 0.469,3.396 1.406,3.583 0.938,0.188 10 false A159 0.927,3.385 1.865,3.573 0.938,0.188 10 false A165 0.594,3.198 0.75,3.396 0.156,0.198 10 false 1 0.604,1.74 0.76,1.938 0.156,0.198 10 false 1 2.938,1.729 3.188,1.958 0.25,0.229 10 false 2 3.385,3.188 3.542,3.385 0.156,0.198 10 false 6 2.875,2.135 3.135,2.375 0.26,0.24 10 false *1 3.333,2.135 3.583,2.344 0.25,0.208 10 false *2 3.042,4.302 5.417,4.729 2.375,0.427 10 false *2: for Bulb Type Turn Signal Light 0.385,4.302 2.625,4.656 2.24,0.354 10 false *1: for LED Type Turn Signal Light 0.99,2.135 1.25,2.375 0.26,0.24 10 false *1 0.552,2.135 0.802,2.344 0.25,0.208 10 false *2 2.896,3.594 3.156,3.833 0.26,0.24 10 false *1 3.354,3.594 3.604,3.802 0.25,0.208 10 false *2 1,3.594 1.26,3.833 0.26,0.24 10 false *1 0.542,3.604 0.792,3.813 0.25,0.208 10 false *2


for GTMC Made


E479586E05
1.302,2.396 2.24,2.583 0.938,0.188 10 false A168 1.292,2.573 3.073,2.844 1.781,0.271 10 false Headlight Assembly LH 1.292,3.875 2.229,4.063 0.938,0.188 10 false A167 1.292,4.063 3.073,4.333 1.781,0.271 10 false Headlight Assembly RH 5.448,3.625 5.75,3.854 0.302,0.229 10 false I85 5.438,3.792 7.073,4.281 1.635,0.49 10 false Main Body ECU (Multiplex Network Body ECU) 5.75,0.74 6.073,1.052 0.323,0.313 10 false 22 6.01,0.729 6.406,0.917 0.396,0.188 10 false DIM 1.167,1.813 1.323,2.01 0.156,0.198 10 false 5 2.781,1.813 2.938,2.01 0.156,0.198 10 false 3 1.188,3.281 1.344,3.479 0.156,0.198 10 false 5 2.771,3.271 2.927,3.469 0.156,0.198 10 false 3 1.344,1.917 1.5,2.115 0.156,0.198 10 false E 2.552,1.927 2.875,2.135 0.323,0.208 10 false HI 1.344,3.385 1.5,3.583 0.156,0.198 10 false E 2.552,3.375 2.875,3.583 0.323,0.208 10 false HI


CAUTION / NOTICE / HINT

NOTICE:
·

Before replacing the main body ECU (multiplex network body ECU), refer to refer to Service Bulletin.*1

·

Check the operation of the low beam headlights. If the low beam headlights do not operate normally, refer to Problem Symptoms Table.

Click hereVehicle Exterior>LIGHTING (EXT)>LIGHTING SYSTEM (except NR Series Engine)>PROBLEM SYMPTOMS TABLE

·

First perform the communication function inspections in How to Proceed with Troubleshooting to confirm that there are no CAN communication malfunctions before troubleshooting this symptom.

Click hereVehicle Exterior>LIGHTING (EXT)>LIGHTING SYSTEM (except NR Series Engine)>HOW TO PROCEED WITH TROUBLESHOOTING

*1: w/ Smart Entry and Start System




PROCEDURE

1.PERFORM ACTIVE TEST USING GTS
a.

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

Body Electrical > Main Body > Active Test
Tester Display Measurement Item Control Range Diagnostic Note
High Beam Headlight High beam headlights OFF or ON -
Body Electrical > Main Body > Active Test
Tester Display
High Beam Headlight
50004 449 52
OK:

High beam headlights illuminate.



Result:
Proceed to
OK
NG



OK

PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE

Click hereVehicle Exterior>LIGHTING (EXT)>LIGHTING SYSTEM (except NR Series Engine)>PROBLEM SYMPTOMS TABLE


NG

2.CHECK VEHICLE TYPE
2.CHECK VEHICLE TYPE
a.

Check vehicle type.


Result:
Result Proceed to
for TFTM Made A
for GTMC Made B



A

3.CHECK VEHICLE TYPE

B

6.CHECK HARNESS AND CONNECTOR (MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU) - HEADLIGHT ASSEMBLY LH AND HEADLIGHT ASSEMBLY RH AND BODY GROUND)
3.CHECK VEHICLE TYPE
a.

Check vehicle type.


Result:
Result Proceed to
for LED Headlight A
for Halogen Headlight B



A

4.CHECK HARNESS AND CONNECTOR (MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU) - HEADLIGHT ASSEMBLY LH AND HEADLIGHT ASSEMBLY RH AND BODY GROUND)

B

5.CHECK HARNESS AND CONNECTOR (MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU) - HEADLIGHT ASSEMBLY LH AND HEADLIGHT ASSEMBLY RH AND BODY GROUND)
4.CHECK HARNESS AND CONNECTOR (MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU) - HEADLIGHT ASSEMBLY LH AND HEADLIGHT ASSEMBLY RH AND BODY GROUND)
a.

Disconnect the A166 headlight assembly LH connector.


b.

Disconnect the A165 headlight assembly RH connector.


c.

Disconnect the I85 main body ECU (Multiplex network body ECU) connector.


d.

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

Standard Resistance:
Tester Connection Condition Specified Condition
I85-22 (DIM) - A166-2 (HI) Always Below 1 Ω
I85-22 (DIM) - A165-2 (HI) Always Below 1 Ω
A166-4 (E) - Body ground Always Below 1 Ω
A165-4 (E) - Body ground Always Below 1 Ω
I85-22 (DIM) - Body ground Always 10 kΩ or higher



Result:
Proceed to
OK
NG



OK

REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU)

Click herePower Source / Network>POWER DISTRIBUTION>MAIN BODY ECU>REMOVAL


NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

5.CHECK HARNESS AND CONNECTOR (MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU) - HEADLIGHT ASSEMBLY LH AND HEADLIGHT ASSEMBLY RH AND BODY GROUND)
a.

Disconnect the A160 headlight assembly LH connector.


b.

Disconnect the A159 headlight assembly RH connector.


c.

Disconnect the I85 main body ECU (Multiplex network body ECU) connector.


d.

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

Standard Resistance:
Tester Connection Condition Specified Condition
I85-22 (DIM) - A160-6 (HI) Always Below 1 Ω
I85-22 (DIM) - A159-6 (HI) Always Below 1 Ω
A160-1 (E) - Body ground Always Below 1 Ω
A159-1 (E) - Body ground Always Below 1 Ω
I85-22 (DIM) - Body ground Always 10 kΩ or higher



Result:
Proceed to
OK
NG



OK

REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU)

Click herePower Source / Network>POWER DISTRIBUTION>MAIN BODY ECU>REMOVAL


NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

6.CHECK HARNESS AND CONNECTOR (MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU) - HEADLIGHT ASSEMBLY LH AND HEADLIGHT ASSEMBLY RH AND BODY GROUND)
a.

Disconnect the A168 headlight assembly LH connector.


b.

Disconnect the A167 headlight assembly RH connector.


c.

Disconnect the I85 main body ECU (Multiplex network body ECU) connector.


d.

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

Standard Resistance:
Tester Connection Condition Specified Condition
I85-22 (DIM) - A168-3 (HI) Always Below 1 Ω
I85-22 (DIM) - A167-3 (HI) Always Below 1 Ω
A168-5 (E) - Body ground Always Below 1 Ω
A167-5 (E) - Body ground Always Below 1 Ω
I85-22 (DIM) - Body ground Always 10 kΩ or higher



Result:
Proceed to
OK
NG



OK

REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU)

Click herePower Source / Network>POWER DISTRIBUTION>MAIN BODY ECU>REMOVAL


NG

REPAIR OR REPLACE HARNESS OR CONNECTOR