RM35X0E _58 Vehicle Interior _079257 SUPPLEMENTAL RESTRAINT SYSTEMS _0385034 AIRBAG SYSTEM(for Type B) C

SUPPLEMENTAL RESTRAINT SYSTEMS  AIRBAG SYSTEM(for Type B)  B1653  Driver Side Seat Position Sensor  


DESCRIPTION

The front seat cushion spring assembly RH (seat position airbag sensor) circuit consists of the airbag sensor assembly and front seat cushion spring assembly RH (seat position airbag sensor).

DTC B1653 is stored when a malfunction is detected in the front seat cushion spring assembly RH (seat position airbag sensor) circuit.

DTC No. Detection Item DTC Detection Condition Trouble Area Warning Indicate Test Mode / Check Mode
B1653 Driver Side Seat Position Sensor One of the following conditions is met:
·

The airbag sensor assembly detects a line short circuit signal, open circuit signal, short circuit to ground signal or short circuit to B+ signal in the front seat cushion spring assembly RH (seat position airbag sensor) circuit for 2 seconds.

·

A front seat cushion spring assembly RH (seat position airbag sensor) malfunction.

·

An airbag sensor assembly malfunction.


·

No. 2 floor wire

·

Front seat wire RH

·

Front seat cushion spring assembly RH (seat position airbag sensor)

·

Airbag sensor assembly


Comes on Not applicable

WIRING DIAGRAM

C413755
2.427,1.125 2.656,1.323 0.229,0.198 10 false 2 2.375,2.583 2.604,2.781 0.229,0.198 10 false 1 5.729,2.729 6.219,2.938 0.49,0.208 10 false RSP- 5.729,1.25 6.219,1.458 0.49,0.208 10 false RSP+ 5.396,1.125 5.635,1.344 0.24,0.219 10 false 32 5.396,2.604 5.635,2.823 0.24,0.219 10 false 31 5.5,3.813 5.99,4.021 0.49,0.208 10 false W1 5.5,4.031 7.135,4.292 1.635,0.26 10 false Airbag Sensor Assembly 0.604,3.219 1.094,3.427 0.49,0.208 10 false m2 0.594,3.458 3.115,3.875 2.521,0.417 10 false Front Seat Cushion Spring Assembly RH (Seat Position Airbag Sensor) 3.833,1.052 4.063,1.25 0.229,0.198 10 false 2 3.833,2.531 4.063,2.729 0.229,0.198 10 false 1 3.719,1.5 4.208,1.708 0.49,0.208 10 false RSP+ 3.729,3.01 4.219,3.219 0.49,0.208 10 false RSP- 3.729,1.26 4.188,1.458 0.458,0.198 10 false Wm2 3.729,2.74 4.188,2.938 0.458,0.198 10 false Wm2

PROCEDURE

1.CHECK CONNECTION OF CONNECTORS
a.

Turn the ignition switch off.


b.

Disconnect the cable from the negative (-) battery terminal, and wait for at least 90 seconds.


c.

Check that the connectors are properly connected to the airbag sensor assembly and front seat cushion spring assembly RH (seat position airbag sensor).


Result:
Proceed to
Connectors are properly connected
Connectors are not properly connected



Connectors are properly connected

2.CHECK CONNECTORS

Connectors are not properly connected

CONNECT CONNECTORS PROPERLY

2.CHECK CONNECTORS
a.
C395141C03
0.313,1.771 0.625,1.969 0.313,0.198 10 false *1 1.156,1.542 1.469,1.74 0.313,0.198 10 false *3 2.708,1.594 3.021,1.792 0.313,0.198 10 false *2 1.792,1.552 2.104,1.75 0.313,0.198 10 false *4
*1 Front Seat Cushion Spring Assembly RH (Seat Position Airbag Sensor)
*2 Airbag Sensor Assembly
*3 Front Seat Wire RH
*4 No. 2 Floor Wire


Disconnect the connectors from the airbag sensor assembly and front seat cushion spring assembly RH (seat position airbag sensor).


b.

Check that the connectors (on the airbag sensor assembly side and front seat cushion spring assembly RH (seat position airbag sensor) side) are not damaged.


Result:
Proceed to
Connectors are not deformed or damaged
Connectors are deformed or damaged



Connectors are not deformed or damaged

3.CHECK FRONT SEAT CUSHION SPRING ASSEMBLY RH (SEAT POSITION AIRBAG SENSOR) CIRCUIT

Connectors are deformed or damaged

REPLACE NO. 2 FLOOR WIRE OR FRONT SEAT WIRE RH

3.CHECK FRONT SEAT CUSHION SPRING ASSEMBLY RH (SEAT POSITION AIRBAG SENSOR) CIRCUIT
a.
C413759C01
0.667,3.594 1.094,3.833 0.427,0.24 0.792,0.396 1.24,0.646 0.448,0.25 2.5,3.583 2.333,3.583 2.333,3.583 1.948,4.042 true 2.49,3.875 2.323,3.875 2.323,3.875 2.031,4.052 true 2.5,4.417 2.333,4.417 2.333,4.417 2.135,4.385 true 0.438,2.667 0.75,2.823 0.313,0.156 10 false *1 2.823,2.521 3.135,2.677 0.313,0.156 10 false *2 1.229,2.396 1.542,2.552 0.313,0.156 10 false *3 1.823,2.385 2.135,2.542 0.313,0.156 10 false *4 2.542,4.344 2.854,4.5 0.313,0.156 10 false *5 2.385,2.156 2.542,2.354 0.156,0.198 10 false A 2.073,2.167 2.229,2.365 0.156,0.198 10 false B 1.625,2.156 1.781,2.354 0.156,0.198 10 false C 1.479,2.156 1.635,2.354 0.156,0.198 10 false D 1.021,2.156 1.177,2.354 0.156,0.198 10 false E 0.708,2.156 0.865,2.354 0.156,0.198 10 false F 0.573,3.083 0.885,3.24 0.313,0.156 10 false *b 0.625,0.25 0.938,0.406 0.313,0.156 10 false *a 2.583,3.5 3.208,3.99 0.625,0.49 10 false RSP- 2.563,3.813 3.135,4.313 0.573,0.5 10 false RSP+ 0.896,0.438 1.323,0.635 0.427,0.198 10 false m2 0.76,3.625 1.188,3.823 0.427,0.198 10 false W1
*1 Front Seat Cushion Spring Assembly RH (Seat Position Airbag Sensor)
*2 Airbag Sensor Assembly
*3 Front Seat Wire RH
*4 No. 2 Floor Wire
*5 Service Wire
*a Front view of wire harness connector
(to Front Seat Cushion Spring Assembly RH (Seat Position Airbag Sensor))
*b Front view of wire harness connector
(to Airbag Sensor Assembly)


Connect the cable to the negative (-) battery terminal, and wait for at least 2 seconds.


b.

Turn the ignition switch to ON.


c.

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

Standard Voltage:
Tester Connection Switch Condition Specified Condition
m2-1 - Body ground Ignition switch ON Below 1 V
m2-2 - Body ground Ignition switch ON Below 1 V



d.

Turn the ignition switch off.


e.

Disconnect the cable from the negative (-) battery terminal, and wait for at least 90 seconds.


f.

Using a service wire, connect terminals 32 (RSP+) and 31 (RSP-) of connector B.

NOTICE:

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



g.

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

Standard Resistance:
Tester Connection Condition Specified Condition
m2-1 - m2-2 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
m2-1 - m2-2 Always 1 MΩ or higher
m2-1 - Body ground Always 1 MΩ or higher
m2-2 - Body ground Always 1 MΩ or higher



Result:
Proceed to
OK
NG



OK

4.CHECK DTC

NG

7.CHECK CONNECTORS
4.CHECK DTC
a.
C395144C08
0.49,1.719 0.802,1.917 0.313,0.198 10 false *1 2.552,1.521 2.865,1.719 0.313,0.198 10 false *2
*1 Front Seat Cushion Spring Assembly RH (Seat Position Airbag Sensor)
*2 Airbag Sensor Assembly


Connect the connectors to the airbag sensor assembly and front seat cushion spring assembly RH (seat position airbag sensor).


b.

Connect the cable to the negative (-) battery terminal, and wait for at least 2 seconds.


c.

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


d.

Clear the DTCs in memory.

Click hereVehicle Interior>SUPPLEMENTAL RESTRAINT SYSTEMS>AIRBAG SYSTEM (for Type B)>DTC CHECK / CLEAR

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.

Click hereVehicle Interior>SUPPLEMENTAL RESTRAINT SYSTEMS>AIRBAG SYSTEM (for Type B)>DTC CHECK / CLEAR

Body Electrical > SRS Airbag > Trouble Codes
50001 188
Result:
Proceed to
DTC B1653 is not output
DTC B1653 is output


HINT:

Codes other than DTC B1653 may be output at this time, but they are not related to this check.




DTC B1653 is not output

USE SIMULATION METHOD TO CHECK

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


DTC B1653 is output

5.REPLACE FRONT SEAT CUSHION SPRING ASSEMBLY RH (SEAT POSITION AIRBAG SENSOR)
5.REPLACE FRONT SEAT CUSHION SPRING ASSEMBLY RH (SEAT POSITION AIRBAG SENSOR)
a.

Turn the ignition switch off.


b.

Disconnect the cable from the negative (-) battery terminal, and wait for at least 90 seconds.


c.

Replace the front seat cushion spring assembly RH (seat position airbag sensor).

Click hereVehicle Interior>SEAT>FRONT SEAT ASSEMBLY (for Separate Seat Type)>DISASSEMBLY

HINT:

Perform the inspection using parts from a normal vehicle if possible.



Result:
Proceed to
NEXT



NEXT

6.CHECK DTC
6.CHECK DTC
a.
C395144C08
0.49,1.719 0.802,1.917 0.313,0.198 10 false *1 2.552,1.521 2.865,1.719 0.313,0.198 10 false *2
*1 Front Seat Cushion Spring Assembly RH (Seat Position Airbag Sensor)
*2 Airbag Sensor Assembly


Connect the cable to the negative (-) battery terminal, and wait for at least 2 seconds.


b.

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


c.

Clear the DTCs in memory.

Click hereVehicle Interior>SUPPLEMENTAL RESTRAINT SYSTEMS>AIRBAG SYSTEM (for Type B)>DTC CHECK / CLEAR

Body Electrical > SRS Airbag > Clear DTCs
50002 188

d.

Turn the ignition switch off.


e.

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


f.

Check for DTCs.

Click hereVehicle Interior>SUPPLEMENTAL RESTRAINT SYSTEMS>AIRBAG SYSTEM (for Type B)>DTC CHECK / CLEAR

Body Electrical > SRS Airbag > Trouble Codes
50001 188
Result:
Proceed to
DTC B1653 is not output
DTC B1653 is output


HINT:

Codes other than DTC B1653 may be output at this time, but they are not related to this check.




DTC B1653 is not output

END (FRONT SEAT CUSHION SPRING ASSEMBLY RH (SEAT POSITION AIRBAG SENSOR) WAS DEFECTIVE)

DTC B1653 is output

REPLACE AIRBAG SENSOR ASSEMBLY

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


7.CHECK CONNECTORS
a.
B511952C02
0.333,1.521 0.646,1.677 0.313,0.156 10 false *1 2.719,1.323 3.031,1.479 0.313,0.156 10 false *2 1.156,1.281 1.469,1.438 0.313,0.156 10 false *3 1.854,1.292 2.167,1.448 0.313,0.156 10 false *4
*1 Front Seat Cushion Spring Assembly RH (Seat Position Airbag Sensor)
*2 Airbag Sensor Assembly
*3 Front Seat Wire RH
*4 No. 2 Floor Wire


Disconnect the connectors from the front seat wire RH and No. 2 floor wire.


b.

Check that the connectors (on the front seat wire RH side and No. 2 floor wire side) are not damaged.


Result:
Proceed to
Connectors are not deformed or damaged
Connectors are deformed or damaged



Connectors are not deformed or damaged

8.CHECK NO. 2 FLOOR WIRE

Connectors are deformed or damaged

REPLACE NO. 2 FLOOR WIRE OR FRONT SEAT WIRE RH

8.CHECK NO. 2 FLOOR WIRE
a.
C413758C03
0.635,3.573 1.052,3.823 0.417,0.25 0.615,0.615 1.01,0.854 0.396,0.24 2.5,3.708 2.333,3.708 2.333,3.708 1.927,4.042 true 2.479,3.875 2.313,3.875 2.313,3.875 2,4.042 true 1.646,4.438 1.813,4.438 1.813,4.438 2.021,4.375 true 2.5,1.167 2.25,1.167 2.25,1.167 1.927,0.833 true 1.073,1.177 1.323,1.177 1.323,1.177 1.563,0.844 true 0.417,2.656 0.729,2.813 0.313,0.156 10 false *1 2.813,2.49 3.125,2.646 0.313,0.156 10 false *2 1.156,2.375 1.469,2.531 0.313,0.156 10 false *3 1.875,2.365 2.188,2.521 0.313,0.156 10 false *4 1.427,4.354 1.74,4.51 0.313,0.156 10 false *5 2.385,2.167 2.542,2.365 0.156,0.198 10 false A 2.104,2.156 2.26,2.354 0.156,0.198 10 false B 1.656,2.156 1.813,2.354 0.156,0.198 10 false C 1.396,2.156 1.552,2.354 0.156,0.198 10 false D 0.938,2.156 1.094,2.354 0.156,0.198 10 false E 0.719,2.156 0.875,2.354 0.156,0.198 10 false F 0.573,3.083 0.885,3.24 0.313,0.156 10 false *b 0.625,0.25 0.938,0.406 0.313,0.156 10 false *a 2.552,3.833 2.979,4.031 0.427,0.198 10 false RSP+ 2.552,3.635 2.979,3.833 0.427,0.198 10 false RSP- 0.656,0.656 1.083,0.854 0.427,0.198 10 false Wm2 0.708,3.625 1.135,3.823 0.427,0.198 10 false W1 0.656,1.094 1.271,1.292 0.615,0.198 10 false RSP- 2.594,1.094 3.208,1.292 0.615,0.198 10 false RSP+
*1 Front Seat cushion spring Assembly RH (Seat Position Airbag Sensor)
*2 Airbag Sensor Assembly
*3 Front Seat Wire RH
*4 No. 2 Floor Wire
*5 Service Wire
*a Front view of wire harness connector
(to Front Seat Wire RH)
*b Front view of wire harness connector
(to Airbag Sensor Assembly)


Connect the cable to the negative (-) battery terminal, and wait for at least 2 seconds.


b.

Turn the ignition switch to ON.


c.

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

Standard Voltage:
Tester Connection Switch Condition Specified Condition
Wm2-2 (RSP+) - Body ground Ignition switch ON Below 1 V
Wm2-1 (RSP-) - Body ground Ignition switch ON Below 1 V



d.

Turn the ignition switch off.


e.

Disconnect the cable from the negative (-) battery terminal, and wait for at least 90 seconds.


f.

Using a service wire, connect terminals 32 (RSP+) and 31 (RSP-) of connector B.

NOTICE:

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



g.

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

Standard Resistance:
Tester Connection Condition Specified Condition
Wm2-2 (RSP+) - Wm2-1 (RSP-) 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
Wm2-2 (RSP+) - Wm2-1 (RSP-) Always 1 MΩ or higher
Wm2-2 (RSP+) - Body ground Always 1 MΩ or higher
Wm2-1 (RSP-) - Body ground Always 1 MΩ or higher



Result:
Proceed to
OK
NG



OK

REPLACE FRONT SEAT WIRE RH

NG

REPLACE NO. 2 FLOOR WIRE