RM35X0E _58 Vehicle Interior _079257 SUPPLEMENTAL RESTRAINT SYSTEMS _0396679 AIRBAG SYSTEM(for Type C) C

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


DESCRIPTION

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

DTC B1653 is stored when a malfunction is detected in the front seat cushion spring assembly (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 (seat position airbag sensor) circuit for 2 seconds.

·

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

·

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

·

An airbag sensor assembly malfunction.


·

No. 2 floor wire*1

·

Front seat wire RH*1

·

Front seat cushion spring assembly RH (seat position airbag sensor)*1

·

Floor wire*2

·

Front seat wire LH*2

·

Front seat cushion spring assembly LH (seat position airbag sensor)*2

·

Airbag sensor assembly


Comes on Not applicable

*1: for RHD

*2: for LHD


WIRING DIAGRAM

for RHD:
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

for LHD:
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 LSP- 5.729,1.25 6.219,1.458 0.49,0.208 10 false LSP+ 5.396,1.125 5.823,1.802 0.427,0.677 10 false 25 5.396,2.604 5.823,3.125 0.427,0.521 10 false 26 5.5,3.813 5.99,4.021 0.49,0.208 10 false V1 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 n2 0.594,3.458 3.115,3.875 2.521,0.417 10 false Front Seat Cushion Spring Assembly LH (Seat Position Airbag Sensor) 3.844,2.521 4.344,3.125 0.5,0.604 10 false 1 3.708,1.51 4.198,1.719 0.49,0.208 10 false LSP+ 3.719,2.969 4.208,3.177 0.49,0.208 10 false LSP- 3.771,1.26 4.229,1.458 0.458,0.198 10 false Vn2 3.76,2.74 4.219,2.938 0.458,0.198 10 false Vn2 3.833,1.042 4.229,1.521 0.396,0.479 10 false 2

CAUTION / NOTICE / HINT

NOTICE:
·

After the engine 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

·

When disconnecting and reconnecting the battery

Click hereGeneral>SETUP>WHEN DISCONNECTING OR RECONNECTING BATTERY TERMINAL>WORK PROCEDURE

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


·

After replacing the airbag sensor assembly, refer to initialization.

Click hereGeneral>SETUP>WHEN REPLACING OR REMOVING/INSTALLING PARTS>WORK PROCEDURE



PROCEDURE

1.CHECK VEHICLE CONDITION
a.

Check vehicle condition.


Result:
Proceed to
for RHD
for LHD



for RHD

2.CHECK CONNECTION OF CONNECTORS

for LHD

10.CHECK CONNECTION OF CONNECTORS
2.CHECK CONNECTION OF CONNECTORS
a.

Turn the engine 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
The connectors are properly connected
The connectors are not properly connected



The connectors are properly connected

3.CHECK CONNECTORS

The connectors are not properly connected

CONNECT CONNECTORS PROPERLY

3.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
The connectors are not deformed or damaged
The connectors are deformed or damaged



The connectors are not deformed or damaged

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

The connectors are deformed or damaged

REPLACE NO. 2 FLOOR WIRE OR FRONT SEAT WIRE RH

4.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 engine switch on (IG).


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 Engine switch on (IG) Below 1 V
m2-2 - Body ground Engine switch on (IG) Below 1 V



d.

Turn the engine 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

5.CHECK DTC

NG

8.CHECK CONNECTORS
5.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 engine switch on (IG), and wait for at least 60 seconds.


d.

Clear the DTCs in memory.

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

Body Electrical > SRS Airbag > Clear DTCs
50002 188

e.

Turn the engine switch off.


f.

Turn the engine switch on (IG), and wait for at least 60 seconds.


g.

Check for DTCs.

Click hereVehicle Interior>SUPPLEMENTAL RESTRAINT SYSTEMS>AIRBAG SYSTEM (for Type C)>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

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

Turn the engine 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).

for Separate Seat Type:

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

for Power Seat:

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

HINT:

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



Result:
Proceed to
NEXT



NEXT

7.CHECK DTC
7.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 engine switch on (IG), and wait for at least 60 seconds.


c.

Clear the DTCs in memory.

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

Body Electrical > SRS Airbag > Clear DTCs
50002 188

d.

Turn the engine switch off.


e.

Turn the engine switch on (IG), and wait for at least 60 seconds.


f.

Check for DTCs.

Click hereVehicle Interior>SUPPLEMENTAL RESTRAINT SYSTEMS>AIRBAG SYSTEM (for Type C)>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


8.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
The connectors are not deformed or damaged
The connectors are deformed or damaged



The connectors are not deformed or damaged

9.CHECK NO. 2 FLOOR WIRE

The connectors are deformed or damaged

REPLACE NO. 2 FLOOR WIRE OR FRONT SEAT WIRE RH

9.CHECK NO. 2 FLOOR WIRE
a.
C413758C02
0.635,3.573 1.052,3.823 0.417,0.25 0.698,0.625 1.094,0.865 0.396,0.24 2.5,3.667 2.333,3.667 2.333,3.667 1.927,4.052 true 2.479,3.885 2.313,3.885 2.313,3.885 2,4.052 true 1.552,4.438 1.719,4.438 1.719,4.438 1.927,4.375 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 1.385,4.354 1.698,4.51 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 2.552,3.802 2.979,4 0.427,0.198 10 false RSP+ 2.552,3.583 2.979,3.781 0.427,0.198 10 false RSP- 0.75,0.667 1.177,0.885 0.427,0.219 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 engine switch on (IG).


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 Engine switch on (IG) Below 1 V
Wm2-1 (RSP-) - Body ground Engine switch on (IG) Below 1 V



d.

Turn the engine 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

10.CHECK CONNECTION OF CONNECTORS
a.

Turn the engine 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 LH (seat position airbag sensor).


Result:
Proceed to
The connectors are properly connected
The connectors are not properly connected



The connectors are properly connected

11.CHECK CONNECTORS

The connectors are not properly connected

CONNECT CONNECTORS PROPERLY

11.CHECK CONNECTORS
a.
C395140C03
0.344,1.208 0.656,1.406 0.313,0.198 10 false *1 1.156,0.958 1.469,1.156 0.313,0.198 10 false *3 1.76,0.938 2.073,1.135 0.313,0.198 10 false *4 2.688,1.563 3,1.76 0.313,0.198 10 false *2
*1 Front Seat Cushion Spring Assembly LH (Seat Position Airbag Sensor)
*2 Airbag Sensor Assembly
*3 Front Seat Wire LH
*4 Floor Wire


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


b.

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


Result:
Proceed to
The connectors are not deformed or damaged
The connectors are deformed or damaged



The connectors are not deformed or damaged

12.CHECK FRONT SEAT CUSHION SPRING ASSEMBLY LH (SEAT POSITION AIRBAG SENSOR) CIRCUIT

The connectors are deformed or damaged

REPLACE FLOOR WIRE OR FRONT SEAT WIRE LH

12.CHECK FRONT SEAT CUSHION SPRING ASSEMBLY LH (SEAT POSITION AIRBAG SENSOR) CIRCUIT
a.
C416057C01
2.479,3.5 2.906,3.74 0.427,0.24 0.667,0.688 1.115,0.938 0.448,0.25 0.948,3.656 1.115,3.656 1.115,3.656 1.542,3.958 true 0.969,3.354 1.135,3.354 1.135,3.354 1.635,3.969 true 2.104,4.365 1.938,4.365 1.938,4.365 1.74,4.302 true 0.354,2.375 0.667,2.531 0.313,0.156 10 false *1 2.771,2.708 3.083,2.865 0.313,0.156 10 false *2 1.229,2.063 1.542,2.219 0.313,0.156 10 false *3 1.823,2.083 2.135,2.24 0.313,0.156 10 false *4 2.198,4.302 2.51,4.458 0.313,0.156 10 false *5 2.333,1.844 2.49,2.042 0.156,0.198 10 false A 2.052,1.854 2.208,2.052 0.156,0.198 10 false B 1.604,1.844 1.76,2.042 0.156,0.198 10 false C 1.438,1.844 1.594,2.042 0.156,0.198 10 false D 1,1.865 1.156,2.063 0.156,0.198 10 false E 0.688,1.854 0.844,2.052 0.156,0.198 10 false F 0.573,3.031 0.885,3.188 0.313,0.156 10 false *b 0.625,0.25 0.938,0.406 0.313,0.156 10 false *a 0.573,3.573 1,3.771 0.427,0.198 10 false LSP+ 0.625,3.26 1.052,3.458 0.427,0.198 10 false LSP- 0.802,0.719 1.229,0.917 0.427,0.198 10 false n2 2.594,3.542 3.021,3.74 0.427,0.198 10 false V1
*1 Front Seat Cushion Spring Assembly LH (Seat Position Airbag Sensor)
*2 Airbag Sensor Assembly
*3 Front Seat Wire LH
*4 Floor Wire
*5 Service Wire
*a Front view of wire harness connector
(to Front Seat Cushion Spring Assembly LH (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 engine switch on (IG).


c.

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

Standard Voltage:
Tester Connection Switch Condition Specified Condition
n2-1 - Body ground Engine switch on (IG) Below 1 V
n2-2 - Body ground Engine switch on (IG) Below 1 V



d.

Turn the engine 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 25 (LSP+) and 26 (LSP-) 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
n2-1 - n2-2 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
n2-1 - n2-2 Always 1 MΩ or higher
n2-1 - Body ground Always 1 MΩ or higher
n2-2 - Body ground Always 1 MΩ or higher



Result:
Proceed to
OK
NG



OK

13.CHECK DTC

NG

16.CHECK CONNECTORS
13.CHECK DTC
a.
C395143C04
0.51,1.365 0.823,1.563 0.313,0.198 10 false *1 2.552,1.719 2.865,1.917 0.313,0.198 10 false *2
*1 Front Seat Cushion Spring Assembly LH (Seat Position Airbag Sensor)
*2 Airbag Sensor Assembly


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


b.

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


c.

Turn the engine switch on (IG), and wait for at least 60 seconds.


d.

Clear the DTCs in memory.

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

Body Electrical > SRS Airbag > Clear DTCs
50002 188

e.

Turn the engine switch off.


f.

Turn the engine switch on (IG), and wait for at least 60 seconds.


g.

Check for DTCs.

Click hereVehicle Interior>SUPPLEMENTAL RESTRAINT SYSTEMS>AIRBAG SYSTEM (for Type C)>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

14.REPLACE FRONT SEAT CUSHION SPRING ASSEMBLY LH (SEAT POSITION AIRBAG SENSOR)
14.REPLACE FRONT SEAT CUSHION SPRING ASSEMBLY LH (SEAT POSITION AIRBAG SENSOR)
a.

Turn the engine 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 LH (seat position airbag sensor).

for Separate Seat Type:

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

for Power Seat:

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

HINT:

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



Result:
Proceed to
NEXT



NEXT

15.CHECK DTC
15.CHECK DTC
a.
C395143C04
0.51,1.365 0.823,1.563 0.313,0.198 10 false *1 2.552,1.719 2.865,1.917 0.313,0.198 10 false *2
*1 Front Seat Cushion Spring Assembly LH (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 engine switch on (IG), and wait for at least 60 seconds.


c.

Clear the DTCs in memory.

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

Body Electrical > SRS Airbag > Clear DTCs
50002 188

d.

Turn the engine switch off.


e.

Turn the engine switch on (IG), and wait for at least 60 seconds.


f.

Check for DTCs.

Click hereVehicle Interior>SUPPLEMENTAL RESTRAINT SYSTEMS>AIRBAG SYSTEM (for Type C)>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 LH (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


16.CHECK CONNECTORS
a.
B511951C03
0.354,1.469 0.667,1.625 0.313,0.156 10 false *1 2.729,1.875 3.042,2.031 0.313,0.156 10 false *2 1.125,1.188 1.438,1.344 0.313,0.156 10 false *3 1.833,1.188 2.146,1.344 0.313,0.156 10 false *4
*1 Front Seat Cushion Spring Assembly LH (Seat Position Airbag Sensor)
*2 Airbag Sensor Assembly
*3 Front Seat Wire LH
*4 Floor Wire


Disconnect the connectors from the front seat wire LH and floor wire.


b.

Check that the connectors (on the front seat wire LH side and floor wire side) are not damaged.


Result:
Proceed to
The connectors are not deformed or damaged
The connectors are deformed or damaged



The connectors are not deformed or damaged

17.CHECK FLOOR WIRE

The connectors are deformed or damaged

REPLACE FLOOR WIRE OR FRONT SEAT WIRE LH

17.CHECK FLOOR WIRE
a.
C416056C02
2.417,3.5 2.833,3.75 0.417,0.25 0.688,0.708 1.083,0.948 0.396,0.24 1,3.667 1.167,3.667 1.167,3.667 1.49,3.927 true 1,3.417 1.167,3.417 1.167,3.417 1.583,3.917 true 1.083,4.333 1.25,4.333 1.25,4.333 1.427,4.229 true 2.396,1.229 2.146,1.229 2.146,1.229 1.823,0.896 true 1.052,1.229 1.302,1.229 1.302,1.229 1.542,0.896 true 0.396,2.354 0.708,2.51 0.313,0.156 10 false *1 2.802,2.708 3.115,2.865 0.313,0.156 10 false *2 1.115,2.094 1.427,2.25 0.313,0.156 10 false *3 1.823,2.063 2.135,2.219 0.313,0.156 10 false *4 0.917,4.25 1.229,4.406 0.313,0.156 10 false *5 2.365,1.875 2.521,2.073 0.156,0.198 10 false A 2.052,1.885 2.208,2.083 0.156,0.198 10 false B 1.594,1.885 1.75,2.083 0.156,0.198 10 false C 1.333,1.885 1.49,2.083 0.156,0.198 10 false D 0.875,1.885 1.031,2.083 0.156,0.198 10 false E 0.656,1.885 0.813,2.083 0.156,0.198 10 false F 2.688,3 3,3.156 0.313,0.156 10 false *b 0.625,0.25 0.938,0.406 0.313,0.156 10 false *a 0.615,3.604 1.042,3.802 0.427,0.198 10 false LSP+ 0.625,3.333 1.052,3.531 0.427,0.198 10 false LSP- 0.771,0.75 1.198,0.948 0.427,0.198 10 false Vn2 2.531,3.542 2.958,3.74 0.427,0.198 10 false V1 0.719,1.146 1.333,1.344 0.615,0.198 10 false LSP- 2.458,1.146 3.073,1.344 0.615,0.198 10 false LSP+
*1 Front Seat Cushion Spring Assembly LH (Seat Position Airbag Sensor)
*2 Airbag Sensor Assembly
*3 Front Seat Wire LH
*4 Floor Wire
*5 Service Wire
*a Front view of wire harness connector
(to Front Seat Wire LH)
*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 engine switch on (IG).


c.

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

Standard Voltage:
Tester Connection Switch Condition Specified Condition
Vn2-2 (LSP+) - Body ground Engine switch on (IG) Below 1 V
Vn2-1 (LSP-) - Body ground Engine switch on (IG) Below 1 V



d.

Turn the engine 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 25 (LSP+) and 26 (LSP-) 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
Vn2-2 (LSP+) - Vn2-1 (LSP-) 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
Vn2-2 (LSP+) - Vn2-1 (LSP-) Always 1 MΩ or higher
Vn2-2 (LSP+) - Body ground Always 1 MΩ or higher
Vn2-1 (LSP-) - Body ground Always 1 MΩ or higher



Result:
Proceed to
OK
NG



OK

REPLACE FRONT SEAT WIRE LH

NG

REPLACE FLOOR WIRE