RM35X0E _58 Vehicle Interior _078602 SEAT BELT _0385912 SEAT BELT WARNING SYSTEM J

SEAT BELT  SEAT BELT WARNING SYSTEM  Driver Side Seat Belt Warning Light does not Operate  


DESCRIPTION

The seat belt warning light on the combination meter assembly illuminates, blinks or turns off in accordance with the state of the front seat inner belt assembly (for Driver Side).

WIRING DIAGRAM

except Wagon:


w/ Front Center Seat Belt Warning:
E414182E16
3.01,0.865 3.208,1.031 0.198,0.167 10 false 33 4.281,0.979 4.677,1.365 0.396,0.385 10 false DBKL 5.896,2.146 7.094,2.646 1.198,0.5 10 false Combination Meter Assembly 0.76,3.344 2.479,3.552 1.719,0.208 10 false : CAN Communication Line 3.99,0.844 4.188,1.073 0.198,0.229 10 false 18 1.844,0.875 2.042,1.146 0.198,0.271 10 false 4 0.583,0.875 0.823,1.219 0.24,0.344 10 false 3 3.865,2.323 5.51,2.698 1.646,0.375 10 false Main Body ECU (Multiplex Network Body ECU) 0.354,1.438 1.698,1.844 1.344,0.406 10 false n1*1, m1*2 2.51,1.573 4.135,2.115 1.625,0.542 10 false Instrument Panel Junction Block Assembly 3.865,2.156 4.135,2.396 0.271,0.24 10 false A 2.521,1.396 4.667,1.594 2.146,0.198 10 false 3D 0.344,1.583 2.302,1.958 1.958,0.375 10 false Front Seat Inner Belt Assembly (for Driver Side) 0.333,2.604 1.677,3.01 1.344,0.406 10 false *1: for LHD 0.333,2.875 1.677,3.281 1.344,0.406 10 false *2: for RHD

w/o Front Center Seat Belt Warning:
E414182E10
3.01,0.865 3.208,1.031 0.198,0.167 10 false 33 4.281,0.979 4.677,1.365 0.396,0.385 10 false DBKL 5.896,2.146 7.094,2.646 1.198,0.5 10 false Combination Meter Assembly 0.76,3.344 2.479,3.552 1.719,0.208 10 false : CAN Communication Line 3.99,0.844 4.188,1.073 0.198,0.229 10 false 18 1.844,0.875 2.042,1.146 0.198,0.271 10 false 6 0.583,0.875 0.823,1.219 0.24,0.344 10 false 4 3.865,2.323 5.51,2.698 1.646,0.375 10 false Main Body ECU (Multiplex Network Body ECU) 0.354,1.438 1.698,1.844 1.344,0.406 10 false N24*1, N26*2 2.51,1.573 4.135,2.115 1.625,0.542 10 false Instrument Panel Junction Block Assembly 3.865,2.156 4.135,2.396 0.271,0.24 10 false A 2.521,1.396 4.667,1.594 2.146,0.198 10 false 3D 0.344,1.583 2.302,1.958 1.958,0.375 10 false Front Seat Inner Belt Assembly (for Driver Side) 0.365,2.552 1.708,2.958 1.344,0.406 10 false *1: for LHD 0.365,2.896 1.708,3.302 1.344,0.406 10 false *2: for RHD


for Wagon:


w/ Front Center Seat Belt Warning:
E414182E09
3.01,0.865 3.208,1.031 0.198,0.167 10 false 33 4.281,0.979 4.677,1.365 0.396,0.385 10 false DBKL 5.896,2.146 7.094,2.646 1.198,0.5 10 false Combination Meter Assembly 0.76,3.344 2.479,3.552 1.719,0.208 10 false : CAN Communication Line 3.99,0.844 4.188,1.073 0.198,0.229 10 false 18 1.844,0.875 2.042,1.146 0.198,0.271 10 false 4 0.583,0.875 0.823,1.219 0.24,0.344 10 false 3 3.865,2.323 5.51,2.698 1.646,0.375 10 false Main Body ECU (Multiplex Network Body ECU) 0.354,1.438 1.698,1.844 1.344,0.406 10 false n1*1, m1*2 2.51,1.573 4.135,2.115 1.625,0.542 10 false Instrument Panel Junction Block Assembly 3.865,2.156 4.135,2.396 0.271,0.24 10 false A 2.521,1.396 4.667,1.594 2.146,0.198 10 false 3D 0.344,1.583 2.302,1.958 1.958,0.375 10 false Front Seat Inner Belt Assembly (for Driver Side) 0.333,2.604 1.677,3.01 1.344,0.406 10 false *1: for LHD 0.333,2.875 1.677,3.281 1.344,0.406 10 false *2: for RHD

w/o Front Center Seat Belt Warning:
E414182E17
3.01,0.865 3.208,1.031 0.198,0.167 10 false 33 4.281,0.979 4.677,1.365 0.396,0.385 10 false DBKL 5.896,2.146 7.094,2.646 1.198,0.5 10 false Combination Meter Assembly 0.76,3.344 2.479,3.552 1.719,0.208 10 false : CAN Communication Line 3.99,0.844 4.188,1.073 0.198,0.229 10 false 18 1.844,0.875 2.167,1.146 0.323,0.271 10 false 14 0.531,0.875 0.875,1.219 0.344,0.344 10 false 15 3.865,2.323 5.51,2.698 1.646,0.375 10 false Main Body ECU (Multiplex Network Body ECU) 0.354,1.438 1.823,1.875 1.469,0.438 10 false N181*1, N183*2 2.51,1.573 4.135,2.115 1.625,0.542 10 false Instrument Panel Junction Block Assembly 3.865,2.156 4.135,2.396 0.271,0.24 10 false A 2.521,1.396 4.667,1.594 2.146,0.198 10 false 3D 0.344,1.583 2.302,1.958 1.958,0.375 10 false Front Seat Inner Belt Assembly (for Driver Side) 0.365,2.552 1.708,2.958 1.344,0.406 10 false *1: for LHD 0.365,2.896 1.708,3.302 1.344,0.406 10 false *2: for RHD


CAUTION / NOTICE / HINT

NOTICE:

The seat belt warning system uses the CAN communication system. First, confirm that there are no malfunctions in the CAN communication system. Refer to How to Proceed with Troubleshooting.

Click hereVehicle Interior>SEAT BELT>SEAT BELT WARNING SYSTEM>HOW TO PROCEED WITH TROUBLESHOOTING


HINT:
·

The seat belt warning light on the combination meter assembly is used for the driver seat, front passenger seat and front center seat (w/ Front Center Seat Belt Warning). Check that the operation of the seat belt warning light is normal first.

Click here

·

If the seat belt warning light does not operate for the driver seat, front passenger seat and front center seat (w/ Front Center Seat Belt Warning), replace the combination meter assembly.

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

·

If the main body ECU (multiplex network body ECU) is replaced, refer to the Service Bulletin.*

*: w/ Entry and Start System



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>DATA LIST / ACTIVE TEST

Body Electrical > Main Body > Data List
Tester Display Measurement Item Range Normal Condition Diagnostic Note
D Seat Buckle SW Driver seat belt buckle switch signal OFF or ON OFF: Driver seat belt unfastened
ON: Driver seat belt fastened 		-
Body Electrical > Main Body > Data List
Tester Display
D Seat Buckle SW
50003 123 14
OK:

ON or OFF appears on the GTS screen according to the driver seat belt condition.



Result:
Result Proceed to
OK A
NG (except Wagon) B
NG (for Wagon) C



A

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


B

2.INSPECT FRONT SEAT INNER BELT ASSEMBLY (for Driver Side)

C

5.INSPECT FRONT SEAT INNER BELT ASSEMBLY (for Driver Side)
2.INSPECT FRONT SEAT INNER BELT ASSEMBLY (for Driver Side)
a.

Remove the front seat inner belt assembly (for Driver Side).

Click hereVehicle Interior>SEAT BELT>FRONT SEAT INNER BELT ASSEMBLY (for Separate Seat Type)>REMOVAL


b.

Inspect the front seat inner belt assembly (for Driver Side).

Click hereVehicle Interior>SEAT BELT>FRONT SEAT INNER BELT ASSEMBLY (for Separate Seat Type)>INSPECTION


Result:
Proceed to
OK
NG



OK

3.CHECK HARNESS AND CONNECTOR (FRONT SEAT INNER BELT ASSEMBLY [for Driver Side] - INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY AND BODY GROUND)

NG

REPLACE FRONT SEAT INNER BELT ASSEMBLY (for Driver Side)

Click hereVehicle Interior>SEAT BELT>FRONT SEAT INNER BELT ASSEMBLY (for Separate Seat Type)>REMOVAL


3.CHECK HARNESS AND CONNECTOR (FRONT SEAT INNER BELT ASSEMBLY [for Driver Side] - INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY AND BODY GROUND)
a.

Disconnect the n1*1, m1*2, N24*3 or N26*4 front seat inner belt assembly (for Driver Side) connector.

*1: for LHD with Front Center Seat Belt Warning

*2: for RHD with Front Center Seat Belt Warning

*3: for LHD without Front Center Seat Belt Warning

*4: for RHD without Front Center Seat Belt Warning



b.

Disconnect the 3D instrument panel junction block assembly connector.


c.

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

Standard Resistance:
for LHD with Front Center Seat Belt Warning
Tester Connection Condition Specified Condition
n1-4 - 3D-33 Always Below 1 Ω
n1-4 or 3D-33 - Body ground Always 10 kΩ or higher
n1-3 - Body ground Always Below 1 Ω

for RHD with Front Center Seat Belt Warning
Tester Connection Condition Specified Condition
m1-4 - 3D-33 Always Below 1 Ω
m1-4 or 3D-33 - Body ground Always 10 kΩ or higher
m1-3 - Body ground Always Below 1 Ω

for LHD without Front Center Seat Belt Warning
Tester Connection Condition Specified Condition
N24-6 - 3D-33 Always Below 1 Ω
N24-6 or 3D-33 - Body ground Always 10 kΩ or higher
N24-4 - Body ground Always Below 1 Ω

for RHD without Front Center Seat Belt Warning
Tester Connection Condition Specified Condition
N26-6 - 3D-33 Always Below 1 Ω
N26-6 or 3D-33 - Body ground Always 10 kΩ or higher
N26-4 - Body ground Always Below 1 Ω



Result:
Proceed to
OK
NG



OK

4.INSPECT INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

4.INSPECT 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

E384427C10
1.583,0.313 1.917,0.5 0.333,0.188 4.833,0.313 5.167,0.5 0.333,0.188 5.802,0.688 5.594,0.688 5.594,0.688 5.156,1.042 true 0.146,0.083 0.458,0.24 0.313,0.156 10 false *a 1.667,0.333 1.979,0.531 0.313,0.198 10 false 3D 4.948,0.313 5.104,0.51 0.156,0.198 10 false A 5.865,0.583 6.323,0.781 0.458,0.198 10 false DBKL
*a Component without harness connected
(Instrument Panel Junction Block Assembly) 		- -



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.

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

Standard Resistance:
Tester Connection Condition Specified Condition
A-18 (DBKL) - 3D-33 Always Below 1 Ω



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


5.INSPECT FRONT SEAT INNER BELT ASSEMBLY (for Driver Side)
a.

Remove the front seat inner belt assembly (for Driver Side).

·

for Separate Seat Type:

Click hereVehicle Interior>SEAT BELT>FRONT SEAT INNER BELT ASSEMBLY (for Separate Seat Type)>REMOVAL

·

for Power Seat:

Click hereVehicle Interior>SEAT BELT>FRONT SEAT INNER BELT ASSEMBLY (for Power Seat)>REMOVAL



b.

Inspect the front seat inner belt assembly (for Driver Side).

·

for Separate Seat Type:

Click hereVehicle Interior>SEAT BELT>FRONT SEAT INNER BELT ASSEMBLY (for Separate Seat Type)>INSPECTION

·

for Power Seat:

Click hereVehicle Interior>SEAT BELT>FRONT SEAT INNER BELT ASSEMBLY (for Power Seat)>INSPECTION



Result:
Proceed to
OK
NG



OK

6.CHECK HARNESS AND CONNECTOR (FRONT SEAT INNER BELT ASSEMBLY [for Driver Side] - INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY AND BODY GROUND)

NG

REPLACE FRONT SEAT INNER BELT ASSEMBLY (for Driver Side)
·

for Separate Seat Type:

Click hereVehicle Interior>SEAT BELT>FRONT SEAT INNER BELT ASSEMBLY (for Separate Seat Type)>REMOVAL

·

for Power Seat:

Click hereVehicle Interior>SEAT BELT>FRONT SEAT INNER BELT ASSEMBLY (for Power Seat)>REMOVAL



6.CHECK HARNESS AND CONNECTOR (FRONT SEAT INNER BELT ASSEMBLY [for Driver Side] - INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY AND BODY GROUND)
a.

Disconnect the n1*1, m1*2, N181*3 or N183*4 front seat inner belt assembly (for Driver Side) connector.

*1: for LHD with Front Center Seat Belt Warning

*2: for RHD with Front Center Seat Belt Warning

*3: for LHD without Front Center Seat Belt Warning

*4: for RHD without Front Center Seat Belt Warning



b.

Disconnect the 3D instrument panel junction block assembly connector.


c.

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

Standard Resistance:
for LHD with Front Center Seat Belt Warning
Tester Connection Condition Specified Condition
n1-4 - 3D-33 Always Below 1 Ω
n1-4 or 3D-33 - Body ground Always 10 kΩ or higher
n1-3 - Body ground Always Below 1 Ω

for RHD with Front Center Seat Belt Warning
Tester Connection Condition Specified Condition
m1-4 - 3D-33 Always Below 1 Ω
m1-4 or 3D-33 - Body ground Always 10 kΩ or higher
m1-3 - Body ground Always Below 1 Ω

for LHD without Front Center Seat Belt Warning
Tester Connection Condition Specified Condition
N181-14 - 3D-33 Always Below 1 Ω
N181-14 or 3D-33 - Body ground Always 10 kΩ or higher
N181-15 - Body ground Always Below 1 Ω

for RHD without Front Center Seat Belt Warning
Tester Connection Condition Specified Condition
N183-14 - 3D-33 Always Below 1 Ω
N183-14 or 3D-33 - Body ground Always 10 kΩ or higher
N183-15 - Body ground Always Below 1 Ω



Result:
Proceed to
OK
NG



OK

7.INSPECT INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

7.INSPECT 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

E384427C10
1.583,0.313 1.917,0.5 0.333,0.188 4.833,0.313 5.167,0.5 0.333,0.188 5.802,0.688 5.594,0.688 5.594,0.688 5.156,1.042 true 0.146,0.083 0.458,0.24 0.313,0.156 10 false *a 1.667,0.333 1.979,0.531 0.313,0.198 10 false 3D 4.948,0.313 5.104,0.51 0.156,0.198 10 false A 5.865,0.583 6.323,0.781 0.458,0.198 10 false DBKL
*a Component without harness connected
(Instrument Panel Junction Block Assembly) 		- -



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.

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

Standard Resistance:
Tester Connection Condition Specified Condition
A-18 (DBKL) - 3D-33 Always Below 1 Ω



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