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

LIGHTING (EXT)  LIGHTING SYSTEM(w/ Headlight ECU)  Rear Fog Light Circuit  


DESCRIPTION

The main body ECU (multiplex network body ECU) controls the rear fog light.

WIRING DIAGRAM

E418409E01
6.125,0.969 6.74,1.167 0.615,0.198 10 false TRLY 6.104,3.51 6.719,3.708 0.615,0.198 10 false RFGO 5.99,4.625 7.135,5.146 1.146,0.521 10 false Main Body ECU (Multiplex Network Body ECU) 6,4.438 7.146,4.958 1.146,0.521 10 false A 3.177,4 5.979,4.365 2.802,0.365 10 false Instrument Panel Junction Block Assembly 4.49,3.271 5.104,3.469 0.615,0.198 10 false FOG RR 4.5,2.177 5.115,2.375 0.615,0.198 10 false FOG RR 1.719,1.25 2.354,1.458 0.635,0.208 10 false J/B-ALT 5.302,1.573 5.917,1.771 0.615,0.198 10 false TAIL 4.594,1.729 5.208,1.927 0.615,0.198 10 false TAIL 1.063,5.271 2.708,5.646 1.646,0.375 10 false i13 0.76,4.573 2.406,4.948 1.646,0.375 10 false B 3.99,4.583 5.635,4.958 1.646,0.375 10 false E 3,2.594 4.646,2.969 1.646,0.375 10 false 3D 2.99,2.365 4.635,2.74 1.646,0.375 10 false 21 3,1.073 4.646,1.448 1.646,0.375 10 false 3G 2.969,0.854 4.615,1.229 1.646,0.375 10 false 1*2 0.271,1.063 1.146,1.469 0.875,0.406 10 false from Battery 0.573,4.563 2.219,4.938 1.646,0.375 10 false 1 0.583,5.75 2.229,6.125 1.646,0.375 10 false 1 5.875,0.969 7.156,1.313 1.281,0.344 10 false 14 5.875,3.51 7.156,3.854 1.281,0.344 10 false 27 1.354,5.271 3.417,5.458 2.063,0.188 10 false Rear Light Assembly LH 1.979,4.896 3.385,5.281 1.406,0.385 10 false Rear Fog Light 4.958,6.063 6.365,6.271 1.406,0.208 10 false *1: for LHD 4.979,6.375 6.385,6.583 1.406,0.208 10 false *2: for RHD 2.542,1.073 4.188,1.448 1.646,0.375 10 false 3E 2.542,0.875 4.188,1.25 1.646,0.375 10 false 1*1 0.781,5.76 2.427,6.135 1.646,0.375 10 false B 4.01,5.76 5.656,6.135 1.646,0.375 10 false E 1.031,6.458 2.677,6.833 1.646,0.375 10 false i12 1.354,6.448 3.417,6.635 2.063,0.188 10 false Rear Light Assembly RH 2,6.052 3.406,6.438 1.406,0.385 10 false Rear Fog Light 4.229,4.583 5.875,4.958 1.646,0.375 10 false 3 4.229,5.75 5.875,6.125 1.646,0.375 10 false 3

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.



PROCEDURE

1.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 / Main Body / Active Test.


e.

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
Rear Fog Light Relay Rear fog light relay OFF or ON Light control switch in TAIL position
Body Electrical > Main Body > Active Test
Tester Display
Rear Fog Light Relay
50004 123 17
OK:

Rear fog light relay operates (Rear fog lights come 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

2.CHECK HARNESS AND CONNECTOR (REAR LIGHT ASSEMBLY - INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY)
2.CHECK HARNESS AND CONNECTOR (REAR LIGHT ASSEMBLY - INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY)
a.

Disconnect the i13 rear light assembly LH connector.


b.

Disconnect the i12 rear light assembly RH connector.


c.

Disconnect the 3D instrument panel junction block assembly connector.


d.

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

Standard Resistance:
Tester Connection Condition Specified Condition
i13-1 (B) - 3D-21 Always Below 1 Ω
i13-1 (B) or 3D-21 - Body ground Always 10 kΩ or higher



Result:
Proceed to
OK
NG



OK

3.INSPECT INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

3.INSPECT INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY
E345461C24
1.781,0.406 2.177,0.677 0.396,0.271 3.354,2.229 3.75,2.5 0.396,0.271 4.969,0.396 5.365,0.667 0.396,0.271 1.792,0.094 2.188,0.365 0.396,0.271 2.854,3.292 3.271,2.875 false 4.365,3.281 4.781,2.865 false 1.906,0.469 2.281,0.74 0.375,0.271 10 false 3G 3.51,2.292 3.885,2.563 0.375,0.271 10 false A 2.677,3.323 3.219,3.594 0.542,0.271 10 false TRLY 4.229,3.313 4.771,3.583 0.542,0.271 10 false RFGO 0.375,0.24 0.75,0.51 0.375,0.271 10 false *a 5.104,0.448 5.479,0.719 0.375,0.271 10 false 3D 1.906,0.156 2.281,0.427 0.375,0.271 10 false 3E 2.24,0.146 2.615,0.417 0.375,0.271 10 false *A 2.25,0.469 2.625,0.74 0.375,0.271 10 false *B
*A for LHD *B for RHD
*a Component without harness connected
(Instrument Panel Junction Block Assembly) 		- -


a.

Remove the instrument panel junction block assembly.

for LHD:

Click herePower Source / Network>POWER DISTRIBUTION>MAIN BODY ECU (for LHD)>REMOVAL

for RHD:

Click herePower Source / Network>POWER DISTRIBUTION>MAIN BODY ECU (for RHD)>REMOVAL



b.

Remove the main body ECU (multiplex network body ECU) from the instrument panel junction block assembly.

for LHD:

Click herePower Source / Network>POWER DISTRIBUTION>MAIN BODY ECU (for LHD)>REMOVAL

for RHD:

Click herePower Source / Network>POWER DISTRIBUTION>MAIN BODY ECU (for RHD)>REMOVAL



c.

Connect a positive (+) lead from the battery to terminal 3E-1*1 or 3G-1*2.

*1: for LHD

*2: for RHD



d.

Connect a negative (-) lead from the battery to terminal A-14 (TRLY) and A-27 (RFGO).


e.

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

Standard Voltage:
for LHD:
Tester Connection Condition Specified Condition
3D-21 - Battery negative (-) terminal Battery voltage is applied between following terminals
·

3E-1 - A-14 (TRLY)

·

3E-1 - A-27 (RFGO)


11 to 14 V

for RHD:
Tester Connection Condition Specified Condition
3D-21 - Battery negative (-) terminal Battery voltage is applied between following terminals
·

3G-1 - A-14 (TRLY)

·

3G-1 - A-27 (RFGO)


11 to 14 V



Result:
Proceed to
OK
NG



OK

REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU)

for LHD:

Click herePower Source / Network>POWER DISTRIBUTION>MAIN BODY ECU (for LHD)>REMOVAL

for RHD:

Click herePower Source / Network>POWER DISTRIBUTION>MAIN BODY ECU (for RHD)>REMOVAL


NG

REPLACE INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY

for LHD:

Click herePower Source / Network>POWER DISTRIBUTION>MAIN BODY ECU (for LHD)>REMOVAL

for RHD:

Click herePower Source / Network>POWER DISTRIBUTION>MAIN BODY ECU (for RHD)>REMOVAL