RM36D0EC _58 Vehicle Interior _083103 SEAT BELT _0694954 SEAT BELT WARNING SYSTEM(for GTMC Made) J

SEAT BELT  SEAT BELT WARNING SYSTEM(for GTMC Made)  Rear Seat Belt Warning Light Malfunction  


DESCRIPTION

The power distribution box assembly detects whether either the rear seat belts are fastened or unfastened based on the rear seat belt buckle switch condition and then sends the rear seat belt buckle switch status signal to the main body ECU (multiplex network body ECU).

The main body ECU (multiplex network body ECU) detects whether either the rear doors are open or closed based on the condition and then sends the rear door status signal to the combination meter assembly.

The combination meter assembly illuminates, blinks or turns off the rear seat belt warning light on the combination meter assembly in accordance with the vehicle speed, rear seat belt state and rear door state.

WIRING DIAGRAM

C435249E10
5.469,7.583 6.906,8.188 1.438,0.604 10 false Power Distribution Box Assembly 6.5,4.344 6.823,4.708 0.323,0.365 10 false IC 0.365,1.51 1.573,2.073 1.208,0.563 10 false Combination Meter Assembly 2.323,2.031 5.552,2.573 3.229,0.542 10 false Main Body ECU (Multiplex Network Body ECU) 0.594,8.396 2.854,8.688 2.26,0.292 10 false : CAN Communication Line 3.083,8.396 5.323,8.813 2.24,0.417 10 false : CXPI Communication Line 1.823,5.563 2.146,5.927 0.323,0.365 10 false N37 1.958,7.146 2.281,7.51 0.323,0.365 10 false N38 4.969,5.448 5.292,5.813 0.323,0.365 10 false 6F 4.99,6.583 5.313,6.948 0.323,0.365 10 false 6F 5,6.375 5.323,6.74 0.323,0.365 10 false 4 5.031,5.208 5.354,5.573 0.323,0.365 10 false 8 5.01,0.604 5.333,0.969 0.323,0.365 10 false A 4.979,0.385 5.302,0.75 0.323,0.365 10 false 22 4.448,0.583 5.031,0.99 0.583,0.406 10 false CXP1 3.708,6.917 4.031,7.281 0.323,0.365 10 false 5 3.708,6.365 4.031,6.729 0.323,0.365 10 false 4 4.99,7.146 5.313,7.51 0.323,0.365 10 false 6F 4.958,6.948 5.281,7.313 0.323,0.365 10 false 19 3.615,5.333 3.938,5.698 0.323,0.365 10 false 5 2.135,5.323 2.458,5.688 0.323,0.365 10 false 4 2.052,6.906 2.375,7.271 0.323,0.365 10 false 4 2.042,6.375 2.365,6.74 0.323,0.365 10 false 3 1.813,5.74 4.208,6.313 2.396,0.573 10 false Rear Seat Inner Belt Assembly 3.156,5.323 3.74,5.635 0.583,0.313 10 false RBR+ 2.313,5.333 2.896,5.646 0.583,0.313 10 false RBR- 2.323,6.49 2.906,6.802 0.583,0.313 10 false CBR- 2.323,7.052 2.906,7.365 0.583,0.313 10 false LBR- 3.167,6.458 3.75,6.771 0.583,0.313 10 false CBR+ 3.188,7.031 3.771,7.344 0.583,0.313 10 false LBR+ 1.948,6.583 2.271,6.948 0.323,0.365 10 false N39 1.656,7.49 4.865,8.125 3.208,0.635 10 false Rear Seat Inner with Center Belt Assembly LH 3.625,6.583 3.948,6.948 0.323,0.365 10 false N39 3.615,7.146 3.938,7.51 0.323,0.365 10 false N38 2.708,7.281 3.938,7.479 1.229,0.198 10 false (for LH) 2.615,6.76 4.448,6.958 1.833,0.198 10 false (for Center) 4.427,1.563 5.042,1.76 0.615,0.198 10 false RCTY 4.438,1.083 5.052,1.281 0.615,0.198 10 false LCTY 4.969,4.365 5.281,4.563 0.313,0.198 10 false 6F 5,4.125 5.313,4.323 0.313,0.198 10 false 26 5.031,3.052 5.344,3.25 0.313,0.198 10 false 1 4.969,3.281 5.281,3.479 0.313,0.198 10 false 6F 5,1.083 5.344,1.479 0.344,0.396 10 false A 5,1.552 5.344,1.948 0.344,0.396 10 false A 5.021,0.854 5.177,1.052 0.156,0.198 10 false 6 5.021,1.354 5.177,1.552 0.156,0.198 10 false 1 1.688,4.74 4.948,5.563 3.26,0.823 10 false Rear Door Courtesy Light Switch Assembly LH 1.677,4.583 1.99,4.781 0.313,0.198 10 false N8 3.604,3.135 3.917,3.333 0.313,0.198 10 false 1 3.625,4.24 3.938,4.438 0.313,0.198 10 false 1 1.646,3.656 4.906,4.479 3.26,0.823 10 false Rear Door Courtesy Light Switch Assembly RH 1.646,3.5 1.958,3.698 0.313,0.198 10 false M5

CAUTION / NOTICE / HINT

NOTICE:
·

The seat belt warning system uses the CAN communication system and CXPI communication system. First, confirm that there is no malfunction in the CAN communication system. Refer to the How to Proceed with Troubleshooting procedure.

Click hereVehicle Interior>SEAT BELT>SEAT BELT WARNING SYSTEM (for GTMC Made)>HOW TO PROCEED WITH TROUBLESHOOTING

·

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

·

When replacing the combination meter assembly, always replace it with a new one. If a combination meter assembly which was installed to another vehicle is used, the information stored in it will not match the information from the vehicle and a DTC may be stored.

·

When the combination meter assembly is replaced, update the ECU security key.

Click hereGeneral>SETUP>WHEN REPLACING OR REMOVING/INSTALLING PARTS>UPDATE ECU SECURITY KEY



PROCEDURE

1.READ VALUE USING GTS
a.

Read the Data List according to the display on the GTS.

Click hereVehicle Interior>SEAT BELT>SEAT BELT WARNING SYSTEM (for GTMC Made)>DATA LIST / ACTIVE TEST

Body Electrical > Main Body > Data List
Tester Display Measurement Item Range Normal Condition Diagnostic Note
RR Door Courtesy Switch Status Rear door courtesy light switch assembly RH signal Close or Open Close: Rear door RH closed
Open: Rear door RH open 		-
RL Door Courtesy Switch Status Rear door courtesy light switch assembly LH signal Close or Open Close: Rear door LH closed
Open: Rear door LH open 		-
Body Electrical > Main Body > Data List
Tester Display
RR Door Courtesy Switch Status
RL Door Courtesy Switch Status
50003 449 32,33
OK:

The GTS display changes correctly in response to the rear door courtesy light switch condition.



Result:
Proceed to
OK
NG



OK

2.READ VALUE USING GTS

NG

GO TO LIGHTING SYSTEM

Click hereVehicle Interior>LIGHTING (INT)>LIGHTING SYSTEM>Door Courtesy Switch Circuit


2.READ VALUE USING GTS
a.

Read the Data List according to the display on the GTS.

Click hereVehicle Interior>SEAT BELT>SEAT BELT WARNING SYSTEM (for GTMC Made)>DATA LIST / ACTIVE TEST

Body Electrical > Power Distribution Box > Data List
Tester Display Measurement Item Range Normal Condition Diagnostic Note
Rear Seat RH Buckle Switch Status Rear RH seat belt buckle switch status Set, Unset or Unknown Set: Rear RH seat belt fastened
Unset: Rear RH seat belt not fastened
Unknown: Data is not determined 		-
Rear Seat Center Buckle Switch Status Rear center seat belt buckle switch status Set, Unset or Unknown Set: Rear center seat belt fastened
Unset: Rear center seat belt not fastened
Unknown: Data is not determined 		-
Rear Seat LH Buckle Switch Status Rear LH seat belt buckle switch status Set, Unset or Unknown Set: Rear LH seat belt fastened
Unset: Rear LH seat belt not fastened
Unknown: Data is not determined 		-
Body Electrical > Power Distribution Box > Data List
Tester Display
Rear Seat RH Buckle Switch Status
Rear Seat Center Buckle Switch Status
Rear Seat LH Buckle Switch Status
50003 475 1402,1403,1404
OK:

The GTS display changes correctly in response to the rear seat belt buckle switch condition.



Result:
Result Proceed to
OK A
NG (Rear RH seat belt malfunction) B
NG (Rear center seat belt malfunction) C
NG (Rear LH seat belt malfunction) D



A

REPLACE COMBINATION METER ASSEMBLY

Click hereVehicle Interior>METER / GAUGE / DISPLAY>COMBINATION METER>REMOVAL


B

3.INSPECT REAR SEAT INNER BELT ASSEMBLY

C

5.INSPECT REAR SEAT INNER WITH CENTER BELT ASSEMBLY LH

D

7.INSPECT REAR SEAT INNER WITH CENTER BELT ASSEMBLY LH
3.INSPECT REAR SEAT INNER BELT ASSEMBLY

Click hereVehicle Interior>SEAT BELT>REAR SEAT INNER BELT ASSEMBLY>INSPECTION

Result:
Proceed to
OK
NG



OK

4.CHECK HARNESS AND CONNECTOR (REAR SEAT INNER BELT ASSEMBLY - POWER DISTRIBUTION BOX ASSEMBLY AND BODY GROUND)

NG

REPLACE REAR SEAT INNER BELT ASSEMBLY

Click hereVehicle Interior>SEAT BELT>REAR SEAT INNER BELT ASSEMBLY>REMOVAL


4.CHECK HARNESS AND CONNECTOR (REAR SEAT INNER BELT ASSEMBLY - POWER DISTRIBUTION BOX ASSEMBLY AND BODY GROUND)
a.

Disconnect the N37 rear seat inner belt assembly connector.


b.

Disconnect the 6F power distribution box assembly connector.


c.

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

Standard Resistance:
Tester Connection Condition Specified Condition
N37-5 (RBR+) - 6F-8 Always Below 1 Ω
N37-4 (RBR-) - Body ground Always Below 1 Ω
N37-5 (RBR+) or 6F-8 - Body ground Always 10 kΩ or higher



Result:
Proceed to
OK
NG



OK

REPLACE POWER DISTRIBUTION BOX ASSEMBLY

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


NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

5.INSPECT REAR SEAT INNER WITH CENTER BELT ASSEMBLY LH

Click hereVehicle Interior>SEAT BELT>REAR SEAT INNER BELT ASSEMBLY>INSPECTION

Result:
Proceed to
OK
NG



OK

6.CHECK HARNESS AND CONNECTOR (REAR SEAT INNER WITH CENTER BELT ASSEMBLY LH - POWER DISTRIBUTION BOX ASSEMBLY AND BODY GROUND)

NG

REPLACE REAR SEAT INNER WITH CENTER BELT ASSEMBLY LH

Click hereVehicle Interior>SEAT BELT>REAR SEAT INNER BELT ASSEMBLY>REMOVAL


6.CHECK HARNESS AND CONNECTOR (REAR SEAT INNER WITH CENTER BELT ASSEMBLY LH - POWER DISTRIBUTION BOX ASSEMBLY AND BODY GROUND)
a.

Disconnect the N39 rear seat inner with center belt assembly LH connector.


b.

Disconnect the 6F power distribution box assembly connector.


c.

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

Standard Resistance:
Tester Connection Condition Specified Condition
N39-4 (CBR+) - 6F-4 Always Below 1 Ω
N39-3 (CBR-) - Body ground Always Below 1 Ω
N39-4 (CBR+) or 6F-4 - Body ground Always 10 kΩ or higher



Result:
Proceed to
OK
NG



OK

REPLACE POWER DISTRIBUTION BOX ASSEMBLY

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


NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

7.INSPECT REAR SEAT INNER WITH CENTER BELT ASSEMBLY LH

Click hereVehicle Interior>SEAT BELT>REAR SEAT INNER BELT ASSEMBLY>INSPECTION

Result:
Proceed to
OK
NG



OK

8.CHECK HARNESS AND CONNECTOR (REAR SEAT INNER WITH CENTER BELT ASSEMBLY LH - POWER DISTRIBUTION BOX ASSEMBLY AND BODY GROUND)

NG

REPLACE REAR SEAT INNER WITH CENTER BELT ASSEMBLY LH

Click hereVehicle Interior>SEAT BELT>REAR SEAT INNER BELT ASSEMBLY>REMOVAL


8.CHECK HARNESS AND CONNECTOR (REAR SEAT INNER WITH CENTER BELT ASSEMBLY LH - POWER DISTRIBUTION BOX ASSEMBLY AND BODY GROUND)
a.

Disconnect the N38 rear seat inner with center belt assembly LH connector.


b.

Disconnect the 6F power distribution box assembly connector.


c.

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

Standard Resistance:
Tester Connection Condition Specified Condition
N38-5 (LBR+) - 6F-19 Always Below 1 Ω
N38-4 (LBR-) - Body ground Always Below 1 Ω
N38-5 (LBR+) or 6F-19 - Body ground Always 10 kΩ or higher



Result:
Proceed to
OK
NG



OK

REPLACE POWER DISTRIBUTION BOX ASSEMBLY

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


NG

REPAIR OR REPLACE HARNESS OR CONNECTOR