RM38T0EC _58 Vehicle Interior _112288 LIGHTING (INT) _0510959 LIGHTING SYSTEM J

LIGHTING (INT)  LIGHTING SYSTEM  Ambient Illumination Light Circuit  


DESCRIPTION

The main body ECU (multiplex network body ECU) controls the operation of the following lights:

·

Center tray illumination light (No. 1 interior illumination light assembly)

·

Cup holder light (Console box pocket garnish)

·

Front Door Ambient Illumination Light

-

Front door ambient illumination light LH (Front door trim board sub-assembly LH)

-

Front door ambient illumination light RH (Front door trim board sub-assembly RH)



WIRING DIAGRAM

E479537E02
0.719,1.188 3.323,1.385 2.604,0.198 10 false from Auxiliary Battery 3.01,1.406 5.615,1.604 2.604,0.198 10 false INP STD NO. 2 4.375,1.219 4.688,1.417 0.313,0.198 10 false 8H 5.083,1.396 5.604,1.74 0.521,0.344 10 false DOME 1.396,3.5 4.052,3.927 2.656,0.427 10 false Center Tray Illumination Light (No. 1 Interior Illumination Light Assembly) 4.406,1.021 4.719,1.219 0.313,0.198 10 false 1 4.365,2.208 4.677,2.406 0.313,0.198 10 false 8B 4.385,2.021 4.698,2.219 0.313,0.198 10 false 44 1.427,5.167 3.823,5.573 2.396,0.406 10 false Cup Holder Light (Console Box Pocket Garnish) 3.615,2.677 3.927,2.875 0.313,0.198 10 false 1 1.552,2.698 1.865,2.896 0.313,0.198 10 false 2 3.396,2.688 3.708,2.885 0.313,0.198 10 false E 1.781,2.688 2.094,2.885 0.313,0.198 10 false B 4.365,2.823 4.677,3.021 0.313,0.198 10 false 8C 4.375,2.615 4.688,2.813 0.313,0.198 10 false 19 3.615,4.313 3.927,4.51 0.313,0.198 10 false 1 3.604,7.542 3.917,7.74 0.313,0.198 10 false 1 1.583,4.323 1.896,4.521 0.313,0.198 10 false 2 1.552,7.552 1.865,7.75 0.313,0.198 10 false 2 3.375,4.323 3.688,4.521 0.313,0.198 10 false E 3.375,7.531 3.688,7.729 0.313,0.198 10 false - 1.781,4.313 2.094,4.51 0.313,0.198 10 false B 1.781,7.542 2.094,7.74 0.313,0.198 10 false + 1.281,8.156 4.177,8.615 2.896,0.458 10 false Front Door Ambient Illumination Light LH (Front Door Trim Board Sub-assembly LH) 1.417,3.323 1.948,3.563 0.531,0.24 10 false I225 1.438,4.969 1.896,5.167 0.458,0.198 10 false I226 1.292,7.99 1.604,8.188 0.313,0.198 10 false L5 4.198,8.583 5.656,9.125 1.458,0.542 10 false Power Distribution Box Assembly 5.448,9.042 7.104,9.635 1.656,0.594 10 false Main Body ECU (Multiplex Network Body ECU) 6.104,2.802 6.76,3 0.656,0.198 10 false FSPT 5.823,2.708 6.135,2.906 0.313,0.198 10 false 16 5.448,8.854 5.76,9.052 0.313,0.198 10 false MB 4.354,4.427 4.667,4.625 0.313,0.198 10 false 8C 4.375,7.656 4.688,7.854 0.313,0.198 10 false 8F 4.354,4.229 4.667,4.427 0.313,0.198 10 false 18 4.375,7.458 4.688,7.656 0.313,0.198 10 false 22 3.635,5.906 3.948,6.104 0.313,0.198 10 false 1 3.396,5.927 3.708,6.125 0.313,0.198 10 false - 1.583,5.927 1.896,6.125 0.313,0.198 10 false 2 1.792,5.927 2.104,6.125 0.313,0.198 10 false + 1.615,6.406 1.927,6.604 0.313,0.198 10 false K6 1.615,6.583 4.521,7.01 2.906,0.427 10 false Front Door Ambient Illumination Light RH (Front Door Trim Board Sub-assembly RH)

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.

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
Front Footwell Lights
·

Front door ambient illumination light (Front door trim board sub-assembly)

·

Center tray illumination light (No. 1 interior illumination light assembly)

·

Cup holder light (Console box pocket garnish)


OFF or ON -
Body Electrical > Main Body > Active Test
Tester Display
Front Footwell Lights
50004 449 22

Result:
Result Proceed to
OK A
NG (Center tray illumination light (No. 1 interior illumination light assembly) light does not come on) B
NG (Cup holder light (Console box pocket garnish) do not come on) C
NG (Front door ambient illumination light (Front door trim board sub-assembly) do not come on) D
NG (Front door ambient illumination light (Front door trim board sub-assembly) do not come on) E
NG (All illuminations do not come on) F



A

USE SIMULATION METHOD TO CHECK

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


B

2.INSPECT CENTER TRAY ILLUMINATION LIGHT (NO. 1 INTERIOR ILLUMINATION LIGHT ASSEMBLY)

C

5.INSPECT CUP HOLDER LIGHT (CONSOLE BOX POCKET GARNISH)

D

8.INSPECT FRONT DOOR AMBIENT ILLUMINATION LIGHT RH (FRONT DOOR TRIM BOARD SUB-ASSEMBLY RH)

E

11.INSPECT FRONT DOOR AMBIENT ILLUMINATION LIGHT LH (FRONT DOOR TRIM BOARD SUB-ASSEMBLY LH)

F

14.CHECK HARNESS AND CONNECTOR (POWER SOURCE - POWER DISTRIBUTION BOX ASSEMBLY)
2.INSPECT CENTER TRAY ILLUMINATION LIGHT (NO. 1 INTERIOR ILLUMINATION LIGHT ASSEMBLY)

Click hereVehicle Interior>LIGHTING (INT)>INTERIOR ILLUMINATION LIGHT (for Instrument Panel)>INSPECTION

Result:
Proceed to
OK
NG



OK

3.CHECK HARNESS AND CONNECTOR (CENTER TRAY ILLUMINATION LIGHT (NO. 1 INTERIOR ILLUMINATION LIGHT ASSEMBLY) - POWER DISTRIBUTION BOX ASSEMBLY)

NG

REPLACE CENTER TRAY ILLUMINATION LIGHT

Click hereVehicle Interior>LIGHTING (INT)>INTERIOR ILLUMINATION LIGHT (for Instrument Panel)>REMOVAL


3.CHECK HARNESS AND CONNECTOR (CENTER TRAY ILLUMINATION LIGHT (NO. 1 INTERIOR ILLUMINATION LIGHT ASSEMBLY) - POWER DISTRIBUTION BOX ASSEMBLY)
a.

Disconnect the 8B and 8C power distribution box assembly connectors.


b.

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

Standard Resistance:
Tester Connection Condition Specified Condition
I225- 2(B) - 8B-44 Always Below 1 Ω
I225-1 (E) - 8C-19 Always Below 1 Ω
I225-2 (B) or 8B-44 - Body ground Always 10 kΩ or higher
I225-1 (E) or 8C-19 - Body ground Always 10 kΩ or higher



Result:
Proceed to
OK
NG



OK

4.INSPECT POWER DISTRIBUTION BOX ASSEMBLY

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

4.INSPECT POWER DISTRIBUTION BOX ASSEMBLY
E438211C09
1.24,0.198 1.563,0.438 0.323,0.24 4.792,0.375 5.115,0.615 0.323,0.24 5.76,1.177 5.635,0.917 true 0.198,0.146 0.51,0.344 0.313,0.198 10 false *a 1.323,0.25 1.708,0.49 0.385,0.24 10 false 8C 4.854,0.417 5.25,0.646 0.396,0.229 10 false MB 5.771,1.219 6.281,1.458 0.51,0.24 10 false FSPT
*a Component without harness connected
(Power Distribution Box Assembly) 		- -


a.

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


b.

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

Standard Resistance:
Tester Connection Condition Specified Condition
8C-19 - MB-16 (FSPT) 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


5.INSPECT CUP HOLDER LIGHT (CONSOLE BOX POCKET GARNISH)

Click hereVehicle Interior>LIGHTING (INT)>INTERIOR ILLUMINATION LIGHT (for Console Box)>INSPECTION

Result:
Proceed to
OK
NG



OK

6.CHECK HARNESS AND CONNECTOR (CUP HOLDER LIGHT (CONSOLE BOX POCKET GARNISH) - POWER DISTRIBUTION BOX ASSEMBLY)

NG

REPLACE CUP HOLDER LIGHT (CONSOLE BOX POCKET GARNISH)

Click hereVehicle Interior>LIGHTING (INT)>INTERIOR ILLUMINATION LIGHT (for Console Box)>REMOVAL


6.CHECK HARNESS AND CONNECTOR (CUP HOLDER LIGHT (CONSOLE BOX POCKET GARNISH) - POWER DISTRIBUTION BOX ASSEMBLY)
a.

Disconnect the 8B and 8C power distribution box assembly connectors.


b.

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

Standard Resistance:
Tester Connection Condition Specified Condition
I226-2 (B) - 8B-44 Always Below 1 Ω
I226-1 (E) - 8C-18 Always Below 1 Ω
I226-2 (B) or 8B-44 - Body ground Always 10 kΩ or higher
I226-1 (E) or 8C-18 - Body ground Always 10 kΩ or higher



Result:
Proceed to
OK
NG



OK

7.INSPECT POWER DISTRIBUTION BOX ASSEMBLY

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

7.INSPECT POWER DISTRIBUTION BOX ASSEMBLY
E438211C09
1.24,0.198 1.563,0.438 0.323,0.24 4.792,0.375 5.115,0.615 0.323,0.24 5.76,1.177 5.635,0.917 true 0.198,0.146 0.51,0.344 0.313,0.198 10 false *a 1.323,0.25 1.708,0.49 0.385,0.24 10 false 8C 4.854,0.417 5.25,0.646 0.396,0.229 10 false MB 5.771,1.219 6.281,1.458 0.51,0.24 10 false FSPT
*a Component without harness connected
(Power Distribution Box Assembly) 		- -


a.

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


b.

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

Standard Resistance:
Tester Connection Condition Specified Condition
8C-18 - MB-16 (FSPT) 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


8.INSPECT FRONT DOOR AMBIENT ILLUMINATION LIGHT RH (FRONT DOOR TRIM BOARD SUB-ASSEMBLY RH)

Click hereVehicle Interior>LIGHTING (INT)>AMBIENT LIGHT>INSPECTION

Result:
Proceed to
OK
NG



OK

9.CHECK HARNESS AND CONNECTOR (FRONT DOOR AMBIENT ILLUMINATION LIGHT RH (FRONT DOOR TRIM BOARD SUB-ASSEMBLY RH) - POWER DISTRIBUTION BOX ASSEMBLY)

NG

REPLACE FRONT DOOR AMBIENT ILLUMINATION LIGHT RH (FRONT DOOR TRIM BOARD SUB-ASSEMBLY RH)

Click hereVehicle Interior>LIGHTING (INT)>AMBIENT LIGHT>REMOVAL


9.CHECK HARNESS AND CONNECTOR (FRONT DOOR AMBIENT ILLUMINATION LIGHT RH (FRONT DOOR TRIM BOARD SUB-ASSEMBLY RH) - POWER DISTRIBUTION BOX ASSEMBLY)
a.

Disconnect the 8B and 8C power distribution box assembly connectors.


b.

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

Standard Resistance:
Tester Connection Condition Specified Condition
K6- 2(+) - 8B-44 Always Below 1 Ω
K6-1 (-) - 8C-18 Always Below 1 Ω
K6-2 (+) or 8B-44 - Body ground Always 10 kΩ or higher
K6-1 (-) or 8C-18 - Body ground Always 10 kΩ or higher



Result:
Proceed to
OK
NG



OK

10.INSPECT POWER DISTRIBUTION BOX ASSEMBLY

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

10.INSPECT POWER DISTRIBUTION BOX ASSEMBLY
E438211C09
1.24,0.198 1.563,0.438 0.323,0.24 4.792,0.375 5.115,0.615 0.323,0.24 5.76,1.177 5.635,0.917 true 0.198,0.146 0.51,0.344 0.313,0.198 10 false *a 1.323,0.25 1.708,0.49 0.385,0.24 10 false 8C 4.854,0.417 5.25,0.646 0.396,0.229 10 false MB 5.771,1.219 6.281,1.458 0.51,0.24 10 false FSPT
*a Component without harness connected
(Power Distribution Box Assembly) 		- -


a.

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


b.

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

Standard Resistance:
Tester Connection Condition Specified Condition
8C-18 - MB-16 (FSPT) 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


11.INSPECT FRONT DOOR AMBIENT ILLUMINATION LIGHT LH (FRONT DOOR TRIM BOARD SUB-ASSEMBLY LH)

Click hereVehicle Interior>LIGHTING (INT)>AMBIENT LIGHT>INSPECTION

Result:
Proceed to
OK
NG



OK

12.CHECK HARNESS AND CONNECTOR (FRONT DOOR AMBIENT ILLUMINATION LIGHT RH (FRONT DOOR TRIM BOARD SUB-ASSEMBLY RH) - POWER DISTRIBUTION BOX ASSEMBLY)

NG

REPLACE FRONT DOOR AMBIENT ILLUMINATION LIGHT LH (FRONT DOOR TRIM BOARD SUB-ASSEMBLY RH)

Click hereVehicle Interior>LIGHTING (INT)>AMBIENT LIGHT>REMOVAL


12.CHECK HARNESS AND CONNECTOR (FRONT DOOR AMBIENT ILLUMINATION LIGHT RH (FRONT DOOR TRIM BOARD SUB-ASSEMBLY RH) - POWER DISTRIBUTION BOX ASSEMBLY)
a.

Disconnect the 8B and 8F power distribution box assembly connectors.


b.

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

Standard Resistance:
Tester Connection Condition Specified Condition
L5- 2(+) - 8B-44 Always Below 1 Ω
L5-1 (-) - 8F-22 Always Below 1 Ω
L5-2 (+) or 8F-22 - Body ground Always 10 kΩ or higher
L5-1 (-) or 8F-22 - Body ground Always 10 kΩ or higher



Result:
Proceed to
OK
NG



OK

13.INSPECT POWER DISTRIBUTION BOX ASSEMBLY

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

13.INSPECT POWER DISTRIBUTION BOX ASSEMBLY
E438203C54
1.24,0.198 1.563,0.438 0.323,0.24 4.792,0.375 5.115,0.615 0.323,0.24 5.76,1.156 5.635,0.896 true 0.198,0.146 0.51,0.344 0.313,0.198 10 false *a 1.323,0.25 1.708,0.49 0.385,0.24 10 false 8F 4.854,0.417 5.25,0.646 0.396,0.229 10 false MB 5.771,1.198 6.281,1.438 0.51,0.24 10 false FSPT
*a Component without harness connected
(Power Distribution Box Assembly) 		- -


a.

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


b.

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

Standard Resistance:
Tester Connection Condition Specified Condition
8F-22 - MB-16 (FSPT) 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


14.CHECK HARNESS AND CONNECTOR (POWER SOURCE - POWER DISTRIBUTION BOX ASSEMBLY)
a.

Disconnect the 8H power distribution box assembly connector.


b.

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

Standard Voltage:
Tester Connection Condition Specified Condition
8H-1 - Body ground Ignition switch off 11 to 14 V



Result:
Proceed to
OK
NG



OK

15.CHECK POWER DISTRIBUTION BOX ASSEMBLY

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

15.CHECK POWER DISTRIBUTION BOX ASSEMBLY
E438212C03
1.583,0.125 2,0.406 0.417,0.281 5.24,0.135 5.656,0.417 0.417,0.281 0.188,0.156 0.5,0.313 0.313,0.156 10 false *a 1.708,0.177 2.021,0.333 0.313,0.156 10 false 8B 5.375,0.188 5.688,0.344 0.313,0.156 10 false 8H
*a Component without harness connected
(Power Distribution Box Assembly) 		- -


a.

Disconnect the 8B 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
8H-1 - 8B-44 Always Below 1 Ω



Result:
Proceed to
OK
NG



OK

16.INSPECT POWER DISTRIBUTION BOX ASSEMBLY

NG

REPLACE POWER DISTRIBUTION BOX ASSEMBLY

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


16.INSPECT POWER DISTRIBUTION BOX ASSEMBLY
E446861C03
3.333,2.292 3.76,2.542 0.427,0.25 4.979,0.521 5.406,0.771 0.427,0.25 1.563,0.479 1.99,0.729 0.427,0.25 0.24,0.208 0.552,0.365 0.313,0.156 10 false *a 1.656,0.531 1.969,0.688 0.313,0.156 10 false 8C 5.083,0.552 5.396,0.708 0.313,0.156 10 false 8F 3.427,2.333 3.74,2.49 0.313,0.156 10 false MB
*a Component without harness connected
(Power Distribution Box Assembly) 		- -


a.

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


b.

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

Standard Resistance:
Tester Connection Condition Specified Condition
8C-18 - MB-16 (FSPT) Always Below 1 Ω
8C-19 - MB-16 (FSPT) Always Below 1 Ω
8F-22 - MB-16 (FSPT) 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