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

LIGHTING (EXT)  LIGHTING SYSTEM(except NR Series Engine)  B243949  Headlight LH Circuit Internal Electronic Failure  B243A49  Headlight RH Circuit Internal Electronic Failure  


DESCRIPTION

The headlight assembly internally boost the power supply voltage to ensure a constant supplied current for the low beam LED of their respective headlight.

These DTCs are also output when the main body ECU (multiplex network body ECU) detects malfunctions while monitoring the applied voltage.

DTC No. Detection Item DTC Detection Condition Trouble Area
B243949 Headlight LH Circuit Internal Electronic Failure
Detection condition:

Ignition switch is to ON, low beam headlights illuminated


Malfunction status:
·

Headlight assembly LH malfunction

·

Headlight assembly LH power source and signal malfunction


Malfunction duration:

10 seconds or more


·

Headlight assembly LH

·

H-LP LH relay

·

Power distribution box assembly

·

Main body ECU (multiplex network body ECU)

·

Harness or connector


B243A49 Headlight RH Circuit Internal Electronic Failure
Detection condition:

Ignition switch is to ON, low beam headlights illuminated


Malfunction status:
·

Headlight assembly RH malfunction

·

Headlight assembly RH power source and signal malfunction


Malfunction duration:

10 seconds or more


·

Headlight assembly RH

·

H-LP RH relay

·

Power distribution box assembly

·

Main body ECU (multiplex network body ECU)

·

Harness or connector



WIRING DIAGRAM

for TFTM Made


E479560E06
1.052,0.5 2.885,0.698 1.833,0.198 10 false from Auxiliary Battery 0.688,1.177 2.521,1.375 1.833,0.198 10 false H-LP LH 2.094,1.594 2.74,1.844 0.646,0.25 10 false H-LP LH 2.073,3.063 2.719,3.313 0.646,0.25 10 false H-LP RH 0.708,2.635 1.354,2.885 0.646,0.25 10 false H-LP RH 4.281,2.865 4.927,3.115 0.646,0.25 10 false 10A 4.021,0.885 4.667,1.135 0.646,0.25 10 false 3 2.635,0.885 2.833,1.094 0.198,0.208 10 false 1 1.99,0.906 2.188,1.115 0.198,0.208 10 false 2 1.969,1.208 2.167,1.417 0.198,0.208 10 false 5 2.646,1.177 2.844,1.385 0.198,0.208 10 false 3 5.719,0.813 6.365,1.063 0.646,0.25 10 false 8 5.667,0.99 6.01,1.302 0.344,0.313 10 false MB 6.083,0.906 6.729,1.156 0.646,0.25 10 false HRLY 2.615,3.677 3.26,3.927 0.646,0.25 10 false LO 1.885,4.094 2.531,4.344 0.646,0.25 10 false E 2.719,3.99 3.365,4.24 0.646,0.25 10 false S 1.844,4.458 3.573,4.656 1.729,0.198 10 false A159*1 5.688,3.792 6.333,4.042 0.646,0.25 10 false 13 6.771,3.625 7.031,3.875 0.26,0.25 10 false IG 6.771,5.427 7.031,5.677 0.26,0.25 10 false IG 6.042,3.885 6.688,4.135 0.646,0.25 10 false RLEW 6.042,5.698 6.688,5.948 0.646,0.25 10 false LLEW 5.688,5.594 6.031,5.792 0.344,0.198 10 false 12 5.656,5.802 6.021,6.01 0.365,0.208 10 false I86 2.719,5.771 3.365,6.021 0.646,0.25 10 false S 2.656,5.49 3.302,5.74 0.646,0.25 10 false LO 1.885,5.885 2.531,6.135 0.646,0.25 10 false E 1.844,4.604 3.792,4.927 1.948,0.323 10 false Headlight Assembly RH 1.76,6.438 3.698,6.677 1.938,0.24 10 false Headlight Assembly LH 1.958,2.677 2.156,2.885 0.198,0.208 10 false 5 1.948,2.344 2.146,2.552 0.198,0.208 10 false 2 2.656,2.615 2.854,2.823 0.198,0.208 10 false 3 2.646,2.354 2.844,2.563 0.198,0.208 10 false 1 6.042,2.365 6.688,2.615 0.646,0.25 10 false HRY2 5.667,4.01 6.146,4.25 0.479,0.24 10 false I86 5.5,6.292 7.146,6.781 1.646,0.49 10 false Main Body ECU (Multiplex Network Body ECU) 4.281,3.021 5.76,3.469 1.479,0.448 10 false Power Distribution Box Assembly 2.938,3.583 3.219,3.802 0.281,0.219 10 false 2*1 1.271,4 1.688,4.219 0.417,0.219 10 false 1*1 1.031,1.938 2.865,2.135 1.833,0.198 10 false from Auxiliary Battery 4.021,2.333 4.667,2.583 0.646,0.25 10 false 4 5.656,2.448 6.021,2.802 0.365,0.354 10 false MB 5.708,2.25 5.927,2.438 0.219,0.188 10 false 9 1.781,6.281 3.51,6.479 1.729,0.198 10 false A160*1 2.927,5.708 3.75,5.917 0.823,0.208 10 false 5*1 2.729,7.385 5.208,7.667 2.479,0.281 10 false *2: for LED Type Turn Signal Light 2.74,7.073 5.219,7.354 2.479,0.281 10 false *1: for Bulb Type Turn Signal Light 3.198,5.708 4.021,5.917 0.823,0.208 10 false 3*2 2.938,3.896 3.76,4.104 0.823,0.208 10 false 5*1 3.208,3.896 4.031,4.104 0.823,0.208 10 false 3*2 1.302,5.76 1.719,5.979 0.417,0.219 10 false 1*1 1.573,4 1.99,4.219 0.417,0.219 10 false 4*2 1.583,5.76 2,5.979 0.417,0.219 10 false 4*2 3.219,3.583 3.5,3.802 0.281,0.219 10 false 1*2 2.927,5.417 3.208,5.635 0.281,0.219 10 false 2*1 3.177,5.417 3.458,5.635 0.281,0.219 10 false 1*2 2.354,6.281 4.083,6.479 1.729,0.198 10 false A166*2 2.427,4.469 4.156,4.667 1.729,0.198 10 false A165*2


for GTMC Made


E479560E07
1.052,0.5 2.885,0.698 1.833,0.198 10 false from Auxiliary Battery 0.688,1.177 2.521,1.375 1.833,0.198 10 false H-LP LH 2.094,1.594 2.74,1.844 0.646,0.25 10 false H-LP LH 2.073,3.063 2.719,3.313 0.646,0.25 10 false H-LP RH 0.708,2.635 1.354,2.885 0.646,0.25 10 false H-LP RH 4.281,2.865 4.927,3.115 0.646,0.25 10 false 10A 4.021,0.885 4.667,1.135 0.646,0.25 10 false 3 2.635,0.885 2.833,1.094 0.198,0.208 10 false 1 1.99,0.906 2.188,1.115 0.198,0.208 10 false 2 1.969,1.208 2.167,1.417 0.198,0.208 10 false 5 2.646,1.177 2.844,1.385 0.198,0.208 10 false 3 5.719,0.813 6.365,1.063 0.646,0.25 10 false 8 5.667,0.99 6.01,1.302 0.344,0.313 10 false MB 6.083,0.906 6.729,1.156 0.646,0.25 10 false HRLY 2.615,3.677 3.26,3.927 0.646,0.25 10 false LO 1.885,4.094 2.531,4.344 0.646,0.25 10 false E 2.719,3.99 3.365,4.24 0.646,0.25 10 false S 1.844,4.458 3.573,4.656 1.729,0.198 10 false A167 5.688,3.792 6.333,4.042 0.646,0.25 10 false 13 6.771,3.625 7.031,3.875 0.26,0.25 10 false IG 6.771,5.427 7.031,5.677 0.26,0.25 10 false IG 6.042,3.885 6.688,4.135 0.646,0.25 10 false RLEW 6.042,5.698 6.688,5.948 0.646,0.25 10 false LLEW 5.688,5.594 6.031,5.792 0.344,0.198 10 false 12 5.656,5.802 6.021,6.01 0.365,0.208 10 false I86 2.719,5.771 3.365,6.021 0.646,0.25 10 false S 2.656,5.49 3.302,5.74 0.646,0.25 10 false LO 1.885,5.885 2.531,6.135 0.646,0.25 10 false E 1.844,4.604 3.792,4.927 1.948,0.323 10 false Headlight Assembly RH 1.76,6.438 3.698,6.677 1.938,0.24 10 false Headlight Assembly LH 1.958,2.677 2.156,2.885 0.198,0.208 10 false 5 1.948,2.344 2.146,2.552 0.198,0.208 10 false 2 2.656,2.615 2.854,2.823 0.198,0.208 10 false 3 2.646,2.354 2.844,2.563 0.198,0.208 10 false 1 6.042,2.365 6.688,2.615 0.646,0.25 10 false HRY2 5.667,4.01 6.146,4.25 0.479,0.24 10 false I86 5.5,6.292 7.146,6.781 1.646,0.49 10 false Main Body ECU (Multiplex Network Body ECU) 4.281,3.021 5.76,3.469 1.479,0.448 10 false Power Distribution Box Assembly 2.938,3.583 3.219,3.802 0.281,0.219 10 false 4 1.031,1.938 2.865,2.135 1.833,0.198 10 false from Auxiliary Battery 4.021,2.333 4.667,2.583 0.646,0.25 10 false 4 5.656,2.448 6.021,2.802 0.365,0.354 10 false MB 5.708,2.25 5.927,2.438 0.219,0.188 10 false 9 1.781,6.281 3.51,6.479 1.729,0.198 10 false A168 2.927,5.708 3.75,5.917 0.823,0.208 10 false 2 2.938,3.896 3.76,4.104 0.823,0.208 10 false 2 1.667,5.76 2.083,5.979 0.417,0.219 10 false 5 2.927,5.417 3.208,5.635 0.281,0.219 10 false 4 1.667,4.01 2.083,4.229 0.417,0.219 10 false 5


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.*


*: w/ Smart Entry and Start System



PROCEDURE

1.CLEAR DTC
Body Electrical > Main Body > Clear DTCs
50002 449
Result:
Proceed to
NEXT



NEXT

2.CHECK FOR DTC
2.CHECK FOR DTC
a.

Check for DTCs.

Body Electrical > Main Body > Trouble Codes
50001 449
OK:

DTC B243900 and B243A00 are not output.



Result:
Result Proceed to
DTCs are not output A
B243949 is output B
B243A49 is output C



A

USE SIMULATION METHOD TO CHECK

Click hereGeneral>INTRODUCTION>HOW TO TROUBLESHOOT ECU CONTROLLED SYSTEMS>HOW TO PROCEED WITH TROUBLESHOOTING


B

3.CHECK VEHICLE TYPE

C

18.CHECK VEHICLE TYPE
3.CHECK VEHICLE TYPE
a.

Check vehicle type.


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



A

4.CHECK HEADLIGHT ASSEMBLY LH (LO TERMINAL VOLTAGE)

B

9.CHECK HEADLIGHT ASSEMBLY LH (LO TERMINAL VOLTAGE)
4.CHECK HEADLIGHT ASSEMBLY LH (LO TERMINAL VOLTAGE)
a.

Disconnect the headlight assembly LH connector.


b.

Measure the voltage according to the value(s) in the table below. (for Bulb Type Turn Signal Light)

Standard Voltage:
Tester Connection Switch Condition Specified Condition
A160-2 (LO) - Body ground Light control switch in HEAD position 11 to 14 V



c.

Measure the voltage according to the value(s) in the table below. (for LED Type Turn Signal Light)

Standard Voltage:
Tester Connection Switch Condition Specified Condition
A166-1 (LO) - Body ground Light control switch in HEAD position 11 to 14 V



Result:
Proceed to
OK
NG



OK

5.CHECK HARNESS AND CONNECTOR (HEADLIGHT ASSEMBLY LH - BODY GROUND)

NG

8.CHECK HARNESS AND CONNECTOR (H-LP LH RELAY - HEADLIGHT ASSEMBLY LH)
5.CHECK HARNESS AND CONNECTOR (HEADLIGHT ASSEMBLY LH - BODY GROUND)
a.

Measure the resistance according to the value(s) in the table below. (for Bulb Type Turn Signal Light)

Standard Resistance:
Tester Connection Condition Specified Condition
A160-1 (E) - Body ground Always Below 1 Ω



b.

Measure the resistance according to the value(s) in the table below. (for LED Type Turn Signal Light)

Standard Resistance:
Tester Connection Condition Specified Condition
A166-4 (E) - Body ground Always Below 1 Ω



Result:
Proceed to
OK
NG



OK

6.CHECK HEADLIGHT ASSEMBLY LH (S TERMINAL VOLTAGE)

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

6.CHECK HEADLIGHT ASSEMBLY LH (S TERMINAL VOLTAGE)
a.

Measure the voltage according to the value(s) in the table below. (for Bulb Type Turn Signal Light)

Standard Voltage:
Tester Connection Switch Condition Specified Condition
A160-5 (S) - Body ground Ignition switch ON 11 to 14 V



b.

Measure the voltage according to the value(s) in the table below. (for LED Type Turn Signal Light)

Standard Voltage:
Tester Connection Switch Condition Specified Condition
A166-3 (S) - Body ground Ignition switch ON 11 to 14 V



Result:
Proceed to
OK
NG



OK

REPLACE HEADLIGHT ASSEMBLY LH

Click hereVehicle Exterior>LIGHTING (EXT)>HEADLIGHT ASSEMBLY (for TFTM Made)>REMOVAL


NG

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

Disconnect the I86 main body ECU (multiplex network body ECU) connector.


b.

Measure the resistance according to the value(s) in the table below. (for Bulb Type Turn Signal Light)

Standard Resistance:
Tester Connection Condition Specified Condition
A160-5 (S) - I86-12 (LLEW) Always Below 1 Ω
A160-5 (S) - Body ground Always 10 kΩ or higher



c.

Measure the resistance according to the value(s) in the table below. (for LED Type Turn Signal Light)

Standard Resistance:
Tester Connection Condition Specified Condition
A166-3 (S) - I86-12 (LLEW) Always Below 1 Ω
A166-3 (S) - 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

8.CHECK HARNESS AND CONNECTOR (H-LP LH RELAY - HEADLIGHT ASSEMBLY LH)
a.

Remove the H-LP LH relay.


b.

Measure the resistance according to the value(s) in the table below. (for Bulb Type Turn Signal Light)

Standard Resistance:
Tester Connection Condition Specified Condition
3 (H-LP LH relay) - A160-2 (LO) Always Below 1 Ω
3 (H-LP LH relay) - Body ground Always 10 kΩ or higher
A160-2 (LO) - Body ground Always 10 kΩ or higher



c.

Measure the resistance according to the value(s) in the table below. (for LED Type Turn Signal Light)

Standard Resistance:
Tester Connection Condition Specified Condition
3 (H-LP LH relay) - A166-1 (LO) Always Below 1 Ω
3 (H-LP LH relay) - Body ground Always 10 kΩ or higher
A166-1 (LO) - Body ground Always 10 kΩ or higher



Result:
Proceed to
OK
NG



OK

14.INSPECT H-LP LH RELAY

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

9.CHECK HEADLIGHT ASSEMBLY LH (LO TERMINAL VOLTAGE)
a.

Disconnect the headlight assembly LH connector.


b.

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

Standard Voltage:
Tester Connection Switch Condition Specified Condition
A168-4 (LO) - Body ground Light control switch in HEAD position 11 to 14 V



Result:
Proceed to
OK
NG



OK

10.CHECK HARNESS AND CONNECTOR (HEADLIGHT ASSEMBLY LH - BODY GROUND)

NG

13.CHECK HARNESS AND CONNECTOR (H-LP LH RELAY - HEADLIGHT ASSEMBLY LH)
10.CHECK HARNESS AND CONNECTOR (HEADLIGHT ASSEMBLY LH - BODY GROUND)
a.

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

Standard Resistance:
Tester Connection Condition Specified Condition
A168-5 (E) - Body ground Always Below 1 Ω



Result:
Proceed to
OK
NG



OK

11.CHECK HEADLIGHT ASSEMBLY LH (S TERMINAL VOLTAGE)

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

11.CHECK HEADLIGHT ASSEMBLY LH (S TERMINAL VOLTAGE)
a.

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

Standard Voltage:
Tester Connection Switch Condition Specified Condition
A168-2 (S) - Body ground Ignition switch ON 11 to 14 V



Result:
Proceed to
OK
NG



OK

REPLACE HEADLIGHT ASSEMBLY LH

Click hereVehicle Exterior>LIGHTING (EXT)>HEADLIGHT ASSEMBLY (for TFTM Made)>REMOVAL


NG

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

Disconnect the I86 main body ECU (multiplex network body ECU) connector.


b.

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

Standard Resistance:
Tester Connection Condition Specified Condition
A168-2 (S) - I86-12 (LLEW) Always Below 1 Ω
A168-2 (S) - 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

13.CHECK HARNESS AND CONNECTOR (H-LP LH RELAY - HEADLIGHT ASSEMBLY LH)
a.

Remove the H-LP LH relay.


b.

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

Standard Resistance:
Tester Connection Condition Specified Condition
3 (H-LP LH relay) - A168-4 (LO) Always Below 1 Ω
3 (H-LP LH relay) - Body ground Always 10 kΩ or higher
A168-4 (LO) - Body ground Always 10 kΩ or higher



Result:
Proceed to
OK
NG



OK

14.INSPECT H-LP LH RELAY

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

14.INSPECT H-LP LH RELAY

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

Result:
Proceed to
OK
NG



OK

15.CHECK HARNESS AND CONNECTOR (H-LP LH RELAY - BATTERY)

NG

REPLACE H-LP LH RELAY

15.CHECK HARNESS AND CONNECTOR (H-LP LH RELAY - BATTERY)
a.
B340809C08
0.115,0.083 0.427,0.281 0.313,0.198 10 false *a
*a Front view of wire harness connector
(to H-LP LH Relay)


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

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



Result:
Proceed to
OK
NG



OK

16.CHECK HARNESS AND CONNECTOR (H-LP LH RELAY - POWER DISTRIBUTION BOX ASSEMBLY)

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

16.CHECK HARNESS AND CONNECTOR (H-LP LH RELAY - POWER DISTRIBUTION BOX ASSEMBLY)
a.

Disconnect the 10A 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 (H-LP LH relay) - 10A-3 Always Below 1 Ω
1 (H-LP LH relay) - Body ground Always 10 kΩ or higher
10A-3 - Body ground Always 10 kΩ or higher



Result:
Proceed to
OK
NG



OK

17.CHECK POWER DISTRIBUTION BOX ASSEMBLY

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

17.CHECK POWER DISTRIBUTION BOX ASSEMBLY
a.

Remove the power distribution box assembly.

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.

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


c.

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

Standard Resistance:
Tester Connection Condition Specified Condition
10A-3 - MB-8 (HRLY) 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


18.CHECK VEHICLE TYPE
a.

Check vehicle type.


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



A

19.CHECK HEADLIGHT ASSEMBLY RH (LO TERMINAL VOLTAGE)

B

24.CHECK HEADLIGHT ASSEMBLY RH (LO TERMINAL VOLTAGE)
19.CHECK HEADLIGHT ASSEMBLY RH (LO TERMINAL VOLTAGE)
a.

Disconnect the headlight assembly RH connector.


b.

Measure the voltage according to the value(s) in the table below. (for Bulb Type Turn Signal Light)

Standard Voltage:
Tester Connection Switch Condition Specified Condition
A159-2 (LO) - Body ground Light control switch in HEAD position 11 to 14 V



c.

Measure the voltage according to the value(s) in the table below. (for LED Type Turn Signal Light)

Standard Voltage:
Tester Connection Switch Condition Specified Condition
A165-1 (LO) - Body ground Light control switch in HEAD position 11 to 14 V



Result:
Proceed to
OK
NG



OK

20.CHECK HARNESS AND CONNECTOR (HEADLIGHT ASSEMBLY RH - BODY GROUND)

NG

23.CHECK HARNESS AND CONNECTOR (H-LP RH RELAY - HEADLIGHT ASSEMBLY RH)
20.CHECK HARNESS AND CONNECTOR (HEADLIGHT ASSEMBLY RH - BODY GROUND)
a.

Measure the resistance according to the value(s) in the table below. (for Bulb Type Turn Signal Light)

Standard Resistance:
Tester Connection Condition Specified Condition
A159-1 (E) - Body ground Always Below 1 Ω



b.

Measure the resistance according to the value(s) in the table below. (for LED Type Turn Signal Light)

Standard Resistance:
Tester Connection Condition Specified Condition
A165-4 (E) - Body ground Always Below 1 Ω



Result:
Proceed to
OK
NG



OK

21.CHECK HEADLIGHT ASSEMBLY RH (S TERMINAL VOLTAGE)

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

21.CHECK HEADLIGHT ASSEMBLY RH (S TERMINAL VOLTAGE)
a.

Measure the voltage according to the value(s) in the table below. (for Bulb Type Turn Signal Light)

Standard Voltage:
Tester Connection Switch Condition Specified Condition
A159-5 (S) - Body ground Ignition switch ON 11 to 14 V



b.

Measure the voltage according to the value(s) in the table below. (for LED Type Turn Signal Light)

Standard Voltage:
Tester Connection Switch Condition Specified Condition
A165-3 (S) - Body ground Ignition switch ON 11 to 14 V



Result:
Proceed to
OK
NG



OK

REPLACE HEADLIGHT ASSEMBLY RH

Click hereVehicle Exterior>LIGHTING (EXT)>HEADLIGHT ASSEMBLY (for GTMC Made)>REMOVAL


NG

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

Disconnect the I86 main body ECU (multiplex network body ECU) connector.


b.

Measure the resistance according to the value(s) in the table below. (for Bulb Type Turn Signal Light)

Standard Resistance:
Tester Connection Condition Specified Condition
A159-5 (S) - I86-13 (RLEW) Always Below 1 Ω
A159-5 (S) - Body ground Always 10 kΩ or higher



c.

Measure the resistance according to the value(s) in the table below. (for LED Type Turn Signal Light)

Standard Resistance:
Tester Connection Condition Specified Condition
A165-3 (S) - I86-13 (RLEW) Always Below 1 Ω
A165-3 (S) - 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

23.CHECK HARNESS AND CONNECTOR (H-LP RH RELAY - HEADLIGHT ASSEMBLY RH)
a.

Remove the H-LP RH relay.


b.

Measure the resistance according to the value(s) in the table below. (for Bulb Type Turn Signal Light)

Standard Resistance:
Tester Connection Condition Specified Condition
3 (H-LP RH relay) - A159-2 (LO) Always Below 1 Ω
3 (H-LP RH relay) - Body ground Always 10 kΩ or higher
A159-2 (LO) - Body ground Always 10 kΩ or higher



c.

Measure the resistance according to the value(s) in the table below. (for LED Type Turn Signal Light)

Standard Resistance:
Tester Connection Condition Specified Condition
3 (H-LP RH relay) - A165-1 (LO) Always Below 1 Ω
3 (H-LP RH relay) - Body ground Always 10 kΩ or higher
A165-1 (LO) - Body ground Always 10 kΩ or higher



Result:
Proceed to
OK
NG



OK

29.INSPECT H-LP RH RELAY

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

24.CHECK HEADLIGHT ASSEMBLY RH (LO TERMINAL VOLTAGE)
a.

Disconnect the headlight assembly RH connector.


b.

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

Standard Voltage:
Tester Connection Switch Condition Specified Condition
A167-4 (LO) - Body ground Light control switch in HEAD position 11 to 14 V



Result:
Proceed to
OK
NG



OK

25.CHECK HARNESS AND CONNECTOR (HEADLIGHT ASSEMBLY RH - BODY GROUND)

NG

28.CHECK HARNESS AND CONNECTOR (H-LP RH RELAY - HEADLIGHT ASSEMBLY RH)
25.CHECK HARNESS AND CONNECTOR (HEADLIGHT ASSEMBLY RH - BODY GROUND)
a.

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

Standard Resistance:
Tester Connection Condition Specified Condition
A167-5 (E) - Body ground Always Below 1 Ω



Result:
Proceed to
OK
NG



OK

26.CHECK HEADLIGHT ASSEMBLY RH (S TERMINAL VOLTAGE)

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

26.CHECK HEADLIGHT ASSEMBLY RH (S TERMINAL VOLTAGE)
a.

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

Standard Voltage:
Tester Connection Switch Condition Specified Condition
A167-2 (S) - Body ground Ignition switch ON 11 to 14 V



Result:
Proceed to
OK
NG



OK

REPLACE HEADLIGHT ASSEMBLY RH

Click hereVehicle Exterior>LIGHTING (EXT)>HEADLIGHT ASSEMBLY (for GTMC Made)>REMOVAL


NG

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

Disconnect the I86 main body ECU (multiplex network body ECU) connector.


b.

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

Standard Resistance:
Tester Connection Condition Specified Condition
A167-2 (S) - I86-13 (RLEW) Always Below 1 Ω
A167-2 (S) - 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

28.CHECK HARNESS AND CONNECTOR (H-LP RH RELAY - HEADLIGHT ASSEMBLY RH)
a.

Remove the H-LP RH relay.


b.

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

Standard Resistance:
Tester Connection Condition Specified Condition
3 (H-LP RH relay) - A167-4 (LO) Always Below 1 Ω
3 (H-LP RH relay) - Body ground Always 10 kΩ or higher
A167-4 (LO) - Body ground Always 10 kΩ or higher



Result:
Proceed to
OK
NG



OK

29.INSPECT H-LP RH RELAY

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

29.INSPECT H-LP RH RELAY

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

Result:
Proceed to
OK
NG



OK

30.CHECK HARNESS AND CONNECTOR (H-LP RH RELAY - BATTERY)

NG

REPLACE H-LP RH RELAY

30.CHECK HARNESS AND CONNECTOR (H-LP RH RELAY - BATTERY)
a.
B340809C08
0.115,0.083 0.427,0.281 0.313,0.198 10 false *a
*a Front view of wire harness connector
(to H-LP RH Relay)


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

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



Result:
Proceed to
OK
NG



OK

31.CHECK HARNESS AND CONNECTOR (H-LP RH RELAY - POWER DISTRIBUTION BOX ASSEMBLY)

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

31.CHECK HARNESS AND CONNECTOR (H-LP RH RELAY - POWER DISTRIBUTION BOX ASSEMBLY)
a.

Disconnect the 10A 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 (H-LP RH relay) - 10A-4 Always Below 1 Ω
1 (H-LP RH relay) - Body ground Always 10 kΩ or higher
10A-4 - Body ground Always 10 kΩ or higher



Result:
Proceed to
OK
NG



OK

32.CHECK POWER DISTRIBUTION BOX ASSEMBLY

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

32.CHECK POWER DISTRIBUTION BOX ASSEMBLY
a.

Remove the power distribution box assembly.

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.

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


c.

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

Standard Resistance:
Tester Connection Condition Specified Condition
10A-4 - MB-9 (HRY2) 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