RM38T0EC _59 Vehicle Exterior _112294 LIGHTING (EXT) _0510962 LIGHTING SYSTEM J

LIGHTING (EXT)  LIGHTING SYSTEM  Daytime Running Light Circuit  


DESCRIPTION

The main body ECU (multiplex network body ECU) controls the daytime running lights.

WIRING DIAGRAM

for LED Headlight


E479561E01
5.938,2.604 7.094,3.198 1.156,0.594 10 false Main Body ECU (Multiplex Network Body ECU) 4.302,1.938 5.75,2.365 1.448,0.427 10 false Power Distribution Box Assembly 5.938,2.396 7.094,2.99 1.156,0.594 10 false MB 4.313,1.781 6.146,2.292 1.833,0.51 10 false 8E 4.417,1.156 6.25,1.667 1.833,0.51 10 false 3 6.229,1.156 6.823,1.615 0.594,0.458 10 false DRL 0.594,1.823 1.188,2.281 0.594,0.458 10 false DRL 0.583,0.677 1.177,1.135 0.594,0.458 10 false DRL 1.458,0.531 3.01,0.813 1.552,0.281 10 false from Auxiliary Battery 0.333,1.198 0.927,1.656 0.594,0.458 10 false 2 1.021,1.177 1.615,1.635 0.594,0.458 10 false 1 0.344,1.438 0.938,1.896 0.594,0.458 10 false 5 1.031,1.438 1.625,1.896 0.594,0.458 10 false 3 2.51,3.292 3.104,3.75 0.594,0.458 10 false IC 2.094,3.469 2.688,3.927 0.594,0.458 10 false E 2.115,4.083 4.438,4.333 2.323,0.25 10 false Headlight Assembly LH 2.448,5.115 3.042,5.573 0.594,0.458 10 false IC 2.104,5.229 2.698,5.688 0.594,0.458 10 false E 2.135,3.896 4.458,4.146 2.323,0.25 10 false A176 2.063,5.698 4.385,5.948 2.323,0.25 10 false A175 2.104,4.729 2.698,5.188 0.594,0.458 10 false B 2.104,2.948 2.698,3.406 0.594,0.458 10 false B 3.417,4.969 4.896,5.5 1.479,0.531 10 false Daytime Running light / Clearance Light 6.052,1.156 6.646,1.615 0.594,0.458 10 false 7 2.073,5.865 4.396,6.115 2.323,0.25 10 false Headlight Assembly RH 1.885,2.938 2.479,3.396 0.594,0.458 10 false 7 1.896,3.427 2.49,3.885 0.594,0.458 10 false 3 1.906,5.208 2.5,5.667 0.594,0.458 10 false 3 1.885,4.719 2.479,5.177 0.594,0.458 10 false 7 0.031,0.031 1.948,0.458 1.917,0.427 12 false for TFTM Made: 3.438,3.198 4.917,3.729 1.479,0.531 10 false Daytime Running light / Clearance Light

E479561E02
5.938,2.604 7.094,3.198 1.156,0.594 10 false Main Body ECU (Multiplex Network Body ECU) 4.302,1.938 5.75,2.365 1.448,0.427 10 false Power Distribution Box Assembly 5.938,2.396 7.094,2.99 1.156,0.594 10 false MB 4.313,1.781 6.146,2.292 1.833,0.51 10 false 8E 4.417,1.156 6.25,1.667 1.833,0.51 10 false 3 6.229,1.156 6.823,1.615 0.594,0.458 10 false DRL 0.594,1.823 1.188,2.281 0.594,0.458 10 false DRL 0.583,0.677 1.177,1.135 0.594,0.458 10 false DRL 1.458,0.531 3.01,0.813 1.552,0.281 10 false from Auxiliary Battery 0.333,1.198 0.927,1.656 0.594,0.458 10 false 2 1.021,1.177 1.615,1.635 0.594,0.458 10 false 1 0.344,1.438 0.938,1.896 0.594,0.458 10 false 5 1.031,1.438 1.625,1.896 0.594,0.458 10 false 3 2.458,3.24 3.052,3.698 0.594,0.458 10 false IC 2.094,3.469 2.688,3.927 0.594,0.458 10 false E 2.115,4.083 4.438,4.333 2.323,0.25 10 false Headlight Assembly LH 2.479,5.042 3.073,5.5 0.594,0.458 10 false IC 2.104,5.229 2.698,5.688 0.594,0.458 10 false E 2.135,3.896 4.458,4.146 2.323,0.25 10 false A176 2.063,5.698 4.385,5.948 2.323,0.25 10 false A175 2.104,4.729 2.698,5.188 0.594,0.458 10 false B 2.104,2.948 2.698,3.406 0.594,0.458 10 false B 3.438,3.177 4.906,3.646 1.469,0.469 10 false Daytime Running light / Clearance Light 6.052,1.156 6.646,1.615 0.594,0.458 10 false 7 2.073,5.865 4.396,6.115 2.323,0.25 10 false Headlight Assembly RH 1.885,2.938 2.479,3.396 0.594,0.458 10 false 2 1.896,3.427 2.49,3.885 0.594,0.458 10 false 6 1.896,5.198 2.49,5.656 0.594,0.458 10 false 6 1.885,4.719 2.479,5.177 0.594,0.458 10 false 2 0.031,0.031 1.948,0.458 1.917,0.427 12 false for GTMC Made: 3.448,4.958 4.917,5.427 1.469,0.469 10 false Daytime Running light / Clearance Light


for Halogen Headlight


E479570E02
5.938,2.604 7.094,3.198 1.156,0.594 10 false Main Body ECU (Multiplex Network Body ECU) 4.302,1.938 5.75,2.365 1.448,0.427 10 false Power Distribution Box Assembly 5.938,2.396 7.094,2.99 1.156,0.594 10 false MB 4.313,1.781 6.146,2.292 1.833,0.51 10 false 8E 4.417,1.156 6.25,1.667 1.833,0.51 10 false 3 6.229,1.156 6.823,1.615 0.594,0.458 10 false DRL 0.594,1.823 1.188,2.281 0.594,0.458 10 false DRL 0.583,0.677 1.177,1.135 0.594,0.458 10 false DRL 1.458,0.531 3.01,0.813 1.552,0.281 10 false from Auxiliary Battery 0.333,1.198 0.927,1.656 0.594,0.458 10 false 2 1.021,1.177 1.615,1.635 0.594,0.458 10 false 1 0.344,1.438 0.938,1.896 0.594,0.458 10 false 5 1.031,1.438 1.625,1.896 0.594,0.458 10 false 3 2.094,3.469 2.688,3.927 0.594,0.458 10 false E 2.115,4.083 4.438,4.333 2.323,0.25 10 false Headlight Assembly LH 2.104,5.229 2.698,5.688 0.594,0.458 10 false E 2.135,3.896 4.458,4.146 2.323,0.25 10 false A138 2.063,5.698 4.385,5.948 2.323,0.25 10 false A143 2.104,4.729 2.698,5.188 0.594,0.458 10 false B 2.104,2.948 2.698,3.406 0.594,0.458 10 false B 3.323,3.229 4.781,3.635 1.458,0.406 10 false Daytime Running light / Clearance Light 6.052,1.156 6.646,1.615 0.594,0.458 10 false 7 2.073,5.865 4.396,6.115 2.323,0.25 10 false Headlight Assembly RH 1.885,2.938 2.479,3.396 0.594,0.458 10 false 1 1.896,3.427 2.49,3.885 0.594,0.458 10 false 3 1.906,5.208 2.5,5.667 0.594,0.458 10 false 3 1.885,4.719 2.479,5.177 0.594,0.458 10 false 1 3.25,4.979 4.708,5.385 1.458,0.406 10 false Daytime Running light / Clearance Light


CAUTION / NOTICE / HINT

NOTICE:
·

Inspect the fuses for circuits related to this system before performing the following procedure.

·

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

*1: w/ Smart Entry and Start System




PROCEDURE

1.PERFORM ACTIVE TEST USING GTS
a.

Using the GTS, perform the Active Test.

Body Electrical > Main Body > Active Test
Tester Display Measurement Item Control Range Diagnostic Note
Daytime Running Light Daytime running lights OFF or ON -
Body Electrical > Main Body > Active Test
Tester Display
Daytime Running Light
50004 449 53
OK:

Clearance lights and daytime running lights illuminate.



Result:
Proceed to
OK
NG



OK

PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE

Click hereVehicle Exterior>LIGHTING (EXT)>LIGHTING SYSTEM>PROBLEM SYMPTOMS TABLE


NG

2.CHECK HARNESS AND CONNECTOR (DRL RELAY - BATTERY)
2.CHECK HARNESS AND CONNECTOR (DRL RELAY - BATTERY)
a.
E479562C01
0.073,0.052 0.427,0.354 0.354,0.302 10 false *1 0.375,0.375 0.729,0.677 0.354,0.302 10 false *2
*1 No. 1 Engine Room Relay Block
*2 DRL Relay Holder


Remove the DRL relay.


b.

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

Standard Voltage:
Tester Connection Switch Condition Specified Condition
2 (DRL relay) - Body ground Ignition switch off 11 to 14 V
5 (DRL relay) - Body ground Ignition switch off 11 to 14 V



Result:
Proceed to
OK
NG



OK

3.INSPECT RELAY

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

3.INSPECT RELAY

Click hereVehicle Exterior>LIGHTING (EXT)>RELAY>ON-VEHICLE INSPECTION

Result:
Proceed to
OK
NG



OK

4.CHECK VEHICLE TYPE

NG

REPLACE DRL RELAY

4.CHECK VEHICLE TYPE
a.

Check the vehicle specification.


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



A

5.CHECK VEHICLE TYPE

B

8.CHECK HARNESS AND CONNECTOR (DRY RELAY - HEADLIGHT ASSEMBLY)
5.CHECK VEHICLE TYPE
a.

Check the vehicle specification.


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



A

6.CHECK HARNESS AND CONNECTOR (DRY RELAY - HEADLIGHT ASSEMBLY)

B

7.CHECK HARNESS AND CONNECTOR (DRY RELAY - HEADLIGHT ASSEMBLY)
6.CHECK HARNESS AND CONNECTOR (DRY RELAY - HEADLIGHT ASSEMBLY)
a.

Disconnect the A176 headlight assembly LH connector.


b.

Disconnect the A175 headlight assembly RH connector.


c.

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

Standard Resistance:
Tester Connection Condition Specified Condition
3 (DRL relay) - A176-7 (B) Always Below 1 Ω
3 (DRL relay) - A175-7 (B) Always Below 1 Ω
3 (DRL relay) - Body ground Always 10 kΩ or higher
A176-7 (B) - Body ground Always 10 kΩ or higher
A175-7 (B) - Body ground Always 10 kΩ or higher



Result:
Proceed to
OK
NG



OK

9.CHECK HARNESS AND CONNECTOR (DRL RELAY - POWER DISTRIBUTION BOX ASSEMBLY)

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

7.CHECK HARNESS AND CONNECTOR (DRY RELAY - HEADLIGHT ASSEMBLY)
a.

Disconnect the A176 headlight assembly LH connector.


b.

Disconnect the A175 headlight assembly RH connector.


c.

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

Standard Resistance:
Tester Connection Condition Specified Condition
3 (DRL relay) - A176-2 (B) Always Below 1 Ω
3 (DRL relay) - A175-2 (B) Always Below 1 Ω
3 (DRL relay) - Body ground Always 10 kΩ or higher
A176-2 (B) - Body ground Always 10 kΩ or higher
A175-2 (B) - Body ground Always 10 kΩ or higher



Result:
Proceed to
OK
NG



OK

9.CHECK HARNESS AND CONNECTOR (DRL RELAY - POWER DISTRIBUTION BOX ASSEMBLY)

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

8.CHECK HARNESS AND CONNECTOR (DRY RELAY - HEADLIGHT ASSEMBLY)
a.

Disconnect the A138 headlight assembly LH connector.


b.

Disconnect the A143 headlight assembly RH connector.


c.

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

Standard Resistance:
Tester Connection Condition Specified Condition
3 (DRL relay) - A138-1 (B) Always Below 1 Ω
3 (DRL relay) - A143-1 (B) Always Below 1 Ω
3 (DRL relay) - Body ground Always 10 kΩ or higher
A138-1 (B) - Body ground Always 10 kΩ or higher
A143-1 (B) - Body ground Always 10 kΩ or higher



Result:
Proceed to
OK
NG



OK

9.CHECK HARNESS AND CONNECTOR (DRL RELAY - POWER DISTRIBUTION BOX ASSEMBLY)

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

9.CHECK HARNESS AND CONNECTOR (DRL RELAY - POWER DISTRIBUTION BOX ASSEMBLY)
a.

Disconnect the 8E power distribution box assembly connector.


b.

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

Standard Resistance:
Tester Connection Condition Specified Condition
1 (DRL relay) - 8E-3 Always Below 1 Ω
1 (DRL relay) - Body ground Always 10 kΩ or higher
8E-3 - Body ground Always 10 kΩ or higher



Result:
Proceed to
OK
NG



OK

10.CHECK POWER DISTRIBUTION BOX ASSEMBLY

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

10.CHECK POWER DISTRIBUTION BOX ASSEMBLY
a.

Remove the power distribution box assembly.

HINT:

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



b.

Remove the main body ECU (multiplex network body ECU) from the power distribution box assembly.


c.

Disconnect the 8E power distribution box assembly connector.


d.

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

E444782C18
1.604,0.208 2.021,0.458 0.417,0.25 4.646,0.417 5.063,0.667 0.417,0.25 4.438,1.333 4.271,0.948 true 0.125,0.104 0.427,0.333 0.302,0.229 10 false *a 1.729,0.25 2.042,0.448 0.313,0.198 10 false 8E 4.75,0.458 5.063,0.656 0.313,0.198 10 false MB 4.438,1.375 4.865,1.615 0.427,0.24 10 false DRL
*a Component without harness connected
(Power Distribution Box Assembly) 		- -


Standard Resistance
Tester Connection Condition Specified Condition
MB-7(DRL) - 8E-3 Always Below 1 Ω

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

REPLACE POWER DISTRIBUTION BOX ASSEMBLY

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