RM3660EC _59 Vehicle Exterior _080784 LIGHTING (EXT) _0600055 LIGHTING SYSTEM(for NR Series Engine) J

LIGHTING (EXT)  LIGHTING SYSTEM(for NR Series Engine)  Taillight Relay Circuit  


DESCRIPTION

The main body ECU (multiplex network body ECU) controls the operation of the TAIL relay.

WIRING DIAGRAM

E395914E14
0.75,0.875 2.583,1.073 1.833,0.198 10 false from Battery 2.208,1.031 3.125,1.229 0.917,0.198 10 false J/B-AM 3.333,1.677 3.646,1.875 0.313,0.198 10 false 4F 3.313,2.625 3.625,2.823 0.313,0.198 10 false 4A 3.323,1.969 3.615,2.177 0.292,0.208 10 false 32 3.333,1.469 3.646,1.667 0.313,0.198 10 false 11 3.323,2.427 3.635,2.625 0.313,0.198 10 false 30 3.323,0.885 3.635,1.083 0.313,0.198 10 false 4D 3.344,0.688 3.5,0.885 0.156,0.198 10 false 1 5.854,0.771 6.469,0.969 0.615,0.198 10 false TRLY 5.604,0.781 5.917,0.979 0.313,0.198 10 false 14 4.594,1.406 5.208,1.604 0.615,0.198 10 false TAIL 5.146,1.313 5.76,1.51 0.615,0.198 10 false TAIL 0.375,2.615 2.99,3.104 2.615,0.49 10 false to Taillights and License Plate Lights 1.479,1.656 3.958,2.115 2.479,0.458 10 false to FR FOG Relay* 3.604,3.094 5.208,3.698 1.604,0.604 10 false Driver Side Junction Block Assembly 5.479,3.552 5.792,3.75 0.313,0.198 10 false MB 5.479,3.698 7.135,4.229 1.656,0.531 10 false Main Body ECU (Multiplex Network Body ECU) 3.313,2.167 3.625,2.365 0.313,0.198 10 false 4B 1.427,2.135 3.26,2.521 1.833,0.385 10 false to Clearance Lights 0.667,4.302 2.406,4.646 1.74,0.344 10 false *: w/ Front Fog 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.



PROCEDURE

1.PERFORM ACTIVE TEST USING GTS
a.

Connect the GTS to the DLC3.


b.

Turn the ignition switch to ON.


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
Taillight Relay Taillight relay OFF or ON -
Body Electrical > Main Body > Active Test
Tester Display
Taillight Relay
50004 123 13
OK:

Taillights illuminate.



Result:
Proceed to
OK
NG



OK

PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE

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


NG

2.CHECK HARNESS AND CONNECTOR (POWER SOURCE - DRIVER SIDE JUNCTION BLOCK ASSEMBLY)
2.CHECK HARNESS AND CONNECTOR (POWER SOURCE - DRIVER SIDE JUNCTION BLOCK ASSEMBLY)
a.

Disconnect the 4D driver side junction block assembly connector.


b.

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

Standard Voltage:
Tester Connection Condition Specified Condition
4D-1 - Body ground Always 11 to 14 V



Result:
Proceed to
OK
NG



OK

3.INSPECT DRIVER SIDE JUNCTION BLOCK ASSEMBLY

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

3.INSPECT DRIVER SIDE JUNCTION BLOCK ASSEMBLY
E410248C01
3.458,0.333 3.854,0.583 0.396,0.25 1.604,1.875 2,2.125 0.396,0.25 5.115,1.896 5.51,2.146 0.396,0.25 2.323,3.74 2.719,3.99 0.396,0.25 5.115,3.792 5.51,4.042 0.396,0.25 3.188,1.354 3.323,0.979 false 3.542,0.375 3.854,0.573 0.313,0.198 10 false MB 0.208,0.208 0.521,0.406 0.313,0.198 10 false *a 3.031,1.365 3.646,1.563 0.615,0.198 10 false TRLY 1.719,1.917 2.031,2.115 0.313,0.198 10 false 4F 5.229,1.948 5.542,2.146 0.313,0.198 10 false 4B 2.438,3.781 2.75,3.979 0.313,0.198 10 false 4A 5.229,3.833 5.542,4.031 0.313,0.198 10 false 4D
*a Component without harness connected
(Driver Side Junction Block Assembly) 		- -


a.

Remove the main body ECU (multiplex network body ECU) from the driver side junction block assembly.

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


b.

Connect a positive (+) lead from the battery to terminal 4D-1.


c.

Connect a negative (-) lead from the battery to terminal MB-14 (TRLY).


d.

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

Standard Voltage:
Tester Connection Condition Specified Condition
4B-32 - Battery negative (-) terminal Always 11 to 14 V
4A-30 - Battery negative (-) terminal Always 11 to 14 V
4F-11 - Battery negative (-) terminal* Always 11 to 14 V


*: w/ Front Fog Light



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 DRIVER SIDE JUNCTION BLOCK ASSEMBLY

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