RM3660EC _58 Vehicle Interior _080741 SUPPLEMENTAL RESTRAINT SYSTEMS _0610731 AIRBAG SYSTEM(for NR Series Engine) C

SUPPLEMENTAL RESTRAINT SYSTEMS  AIRBAG SYSTEM(for NR Series Engine)  B1655  Seat Belt Buckle Switch (RH)  


DESCRIPTION

The front seat belt buckle switch RH circuit consists of the airbag sensor with ECU assembly and front seat belt buckle switch RH (front seat inner belt assembly RH).

DTC B1655 is stored when a malfunction is detected in the front seat belt buckle switch RH circuit.

DTC No. Detection Item DTC Detection Condition Trouble Area Warning Indicate Test Mode / Check Mode
B1655 Seat Belt Buckle Switch (RH)
·

The airbag sensor with ECU assembly detects a line short, short to ground or B+, or an open in the front seat belt buckle switch RH circuit.

·

Front seat belt buckle switch RH malfunction

·

Airbag sensor with ECU assembly malfunction


·

Floor wire

·

Front seat belt buckle switch RH (Front seat inner belt assembly RH)

·

Airbag sensor with ECU assembly


Comes on Does not apply to test/check mode

WIRING DIAGRAM

B484140E39
0.719,2.229 1.802,2.469 1.083,0.24 10 false O51 0.708,2.396 3.135,2.813 2.427,0.417 10 false Front Seat Belt Buckle Switch RH (Front Seat Inner Belt Assembly RH) 1.844,1.052 2.375,1.375 0.531,0.323 10 false RBE+ 1.865,1.688 2.396,2.01 0.531,0.323 10 false RBE- 2.292,1.052 2.823,1.375 0.531,0.323 10 false 8 2.292,1.688 2.823,2.01 0.531,0.323 10 false 7 4.813,1.052 5.344,1.375 0.531,0.323 10 false 29 4.813,1.688 5.344,2.01 0.531,0.323 10 false 30 5.052,1.052 5.615,1.406 0.563,0.354 10 false RBE+ 5.052,1.688 5.583,2.01 0.531,0.323 10 false RBE- 4.99,2.396 6.073,2.635 1.083,0.24 10 false O17 4.979,2.563 7.146,2.958 2.167,0.396 10 false Airbag Sensor with ECU Assembly

CAUTION / NOTICE / HINT

NOTICE:
·

After the ignition switch is turned off, there may be a waiting time before disconnecting the negative (-) battery terminal.

Click hereGeneral>SETUP>WHEN DISCONNECTING OR RECONNECTING BATTERY TERMINAL>BEFORE DISCONNECTING BATTERY

HINT:

When disconnecting and reconnecting the battery, there is an automatic learning function that completes learning when the respective system is used.

Click hereGeneral>SETUP>WHEN DISCONNECTING OR RECONNECTING BATTERY TERMINAL>AUTOMATIC LEARNING CHART




PROCEDURE

1.CHECK CONNECTION OF CONNECTORS
a.

Turn the ignition switch off.


b.

Disconnect the cable from the negative (-) battery terminal.

CAUTION:

Wait at least 90 seconds after disconnecting the cable from the negative (-) battery terminal to disable the SRS system.



c.

Check that the connectors are properly connected to the airbag sensor with ECU assembly and front seat inner belt assembly RH.

OK:

The connectors are properly connected.



Result:
Proceed to
OK
NG



OK

2.CHECK CONNECTORS

NG

CONNECT CONNECTORS PROPERLY

2.CHECK CONNECTORS
a.

Disconnect the connectors from the airbag sensor with ECU assembly and front seat inner belt assembly RH.


b.

Check that the terminals of the connectors are not deformed or damaged.

OK:

The terminals are not deformed or damaged.



Result:
Proceed to
OK
NG



OK

3.CHECK FLOOR WIRE

NG

REPLACE FLOOR WIRE OR FRONT SEAT INNER BELT ASSEMBLY RH

3.CHECK FLOOR WIRE
a.
B540329C02
0.771,0.844 1.198,1.083 0.427,0.24 0.938,3.708 1.281,3.938 0.344,0.229 1.458,2.958 1.458,2.521 1.458,2.521 1.271,2.521 false 2.031,1.813 2.031,1.698 false 1.635,1.688 1.958,1.302 true 2.396,1.677 2.094,1.292 true 2.469,4.302 2.177,3.948 true 1.521,4.302 2.073,3.948 true 0.417,2.917 0.802,3.313 0.385,0.396 10 false *1 2.573,2.604 2.969,2.958 0.396,0.354 10 false *2 1.115,2.448 1.5,2.792 0.385,0.344 10 false *3 1.969,1.823 2.365,2.146 0.396,0.323 10 false *4 0.583,0.167 0.979,0.49 0.396,0.323 10 false *a 0.594,3.406 0.958,3.813 0.365,0.406 10 false *b 2.167,2.917 2.563,3.271 0.396,0.354 10 false A 1.75,2.917 2.146,3.271 0.396,0.354 10 false B 1.115,2.917 1.51,3.271 0.396,0.354 10 false C 0.688,2.917 1.083,3.271 0.396,0.354 10 false D 0.854,0.875 1.24,1.271 0.385,0.396 10 false O17 2.281,1.688 2.677,2.01 0.396,0.323 10 false RBE- 1.479,1.688 1.875,2.01 0.396,0.323 10 false RBE+ 2.313,4.313 2.719,4.573 0.406,0.26 10 false RBE+ 1.365,4.313 1.771,4.573 0.406,0.26 10 false RBE- 0.979,3.74 1.365,4.135 0.385,0.396 10 false O51
*1 Front Seat Inner Belt Assembly RH
*2 Airbag Sensor with ECU Assembly
*3 Floor Wire
*4 Service Wire
*a Front view of wire harness connector
(to Airbag Sensor with ECU Assembly)
*b Front view of wire harness connector
(to Front Seat Inner Belt Assembly RH)


Connect the cable to the negative (-) battery terminal.


b.

Turn the ignition switch to ON.


c.

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

Standard Voltage:
Tester Connection Condition Specified Condition
O51-8 (RBE+) - Body ground Ignition switch ON Below 1 V
O51-7 (RBE-) - Body ground Ignition switch ON Below 1 V



d.

Turn the ignition switch off.


e.

Disconnect the cable from the negative (-) battery terminal.

CAUTION:

Wait at least 90 seconds after disconnecting the cable from the negative (-) battery terminal to disable the SRS system.



f.

Using a service wire, connect terminals 29 (RBE+) and 30 (RBE-) of connector B.

NOTICE:

Do not forcibly insert the service wire into the terminals of the connector when connecting the wire.



g.

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

Standard Resistance:
Tester Connection Condition Specified Condition
O51-8 (RBE+) - O51-7 (RBE-) Always Below 1 Ω



h.

Disconnect the service wire from connector B.


i.

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

Standard Resistance:
Tester Connection Condition Specified Condition
O51-8 (RBE+) - O51-7 (RBE-) Always 1 MΩ or higher
O51-8 (RBE+) - Body ground Always 1 MΩ or higher
O51-7 (RBE-) - Body ground Always 1 MΩ or higher



Result:
Proceed to
OK
NG



OK

4.CHECK DTC

NG

REPLACE FLOOR WIRE

4.CHECK DTC
a.
C238218C02
0.802,1.156 1.438,1.75 0.635,0.594 10 false *1 2.302,0.885 2.594,1.208 0.292,0.323 10 false *2 1.719,1.167 2.021,1.604 0.302,0.438 10 false B 1.875,1.167 2.271,1.625 0.396,0.458 10 false A 1.271,1.167 1.552,1.583 0.281,0.417 10 false C 1.115,1.167 1.594,1.729 0.479,0.563 10 false D
*1 Front Seat Inner Belt Assembly RH
*2 Airbag Sensor with ECU Assembly


Connect the connectors to the airbag sensor with ECU assembly and front seat inner belt assembly RH.


b.

Connect the cable to the negative (-) battery terminal.


c.

Turn the ignition switch to ON, and wait for at least 60 seconds.


d.

Clear the DTCs stored in memory.

Body Electrical > SRS Airbag > Clear DTCs
50002 188

e.

Turn the ignition switch off.


f.

Turn the ignition switch to ON, and wait for at least 60 seconds.


g.

Check for DTCs.

Body Electrical > SRS Airbag > Trouble Codes
50001 188
OK:

DTC B1655 is not output.


HINT:

Codes other than DTC B1655 may be output at this time, but they are not related to this check.



Result:
Result
OK
NG



OK

USE SIMULATION METHOD TO CHECK

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


NG

5.CHECK FRONT SEAT INNER BELT ASSEMBLY RH
5.CHECK FRONT SEAT INNER BELT ASSEMBLY RH
a.
C238218C02
0.802,1.156 1.438,1.75 0.635,0.594 10 false *1 2.302,0.885 2.594,1.208 0.292,0.323 10 false *2 1.719,1.167 2.021,1.604 0.302,0.438 10 false B 1.875,1.167 2.271,1.625 0.396,0.458 10 false A 1.271,1.167 1.552,1.583 0.281,0.417 10 false C 1.115,1.167 1.594,1.729 0.479,0.563 10 false D
*1 Front Seat Inner Belt Assembly RH
*2 Airbag Sensor with ECU Assembly


Turn the ignition switch off.


b.

Disconnect the cable from the negative (-) battery terminal.

CAUTION:

Wait at least 90 seconds after disconnecting the cable from the negative (-) battery terminal to disable the SRS system.



c.

Replace the front seat inner belt assembly RH with a known good one.

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

HINT:

Perform the following inspection using known good parts from another vehicle if possible.



d.

Connect the cable to the negative (-) battery terminal.


e.

Turn the ignition switch to ON, and wait for at least 60 seconds.


f.

Clear the DTCs stored in memory.

Body Electrical > SRS Airbag > Clear DTCs
50002 188

g.

Turn the ignition switch off.


h.

Turn the ignition switch to ON, and wait for at least 60 seconds.


i.

Check for DTCs.

Body Electrical > SRS Airbag > Trouble Codes
50001 188
OK:

DTC B1655 is not output.


HINT:

Codes other than DTC B1655 may be output at this time, but they are not related to this check.



j.

Turn the ignition switch off.


k.

Disconnect the cable from the negative (-) battery terminal.

CAUTION:

Wait at least 90 seconds after disconnecting the cable from the negative (-) battery terminal to disable the SRS system.



l.

Restore the front seat inner belt assembly RH that was installed for testing to its original location.

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


Result:
Proceed to
OK
NG



OK

REPLACE FRONT SEAT INNER BELT ASSEMBLY RH

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


NG

REPLACE AIRBAG SENSOR WITH ECU ASSEMBLY

Click hereVehicle Interior>SUPPLEMENTAL RESTRAINT SYSTEMS>CENTER AIRBAG SENSOR ASSEMBLY>REMOVAL