RM35X0E _58 Vehicle Interior _079257 SUPPLEMENTAL RESTRAINT SYSTEMS _0387732 AIRBAG SYSTEM(for Type A) C

SUPPLEMENTAL RESTRAINT SYSTEMS  AIRBAG SYSTEM(for Type A)  B1820  Short in Side Squib (RH) Circuit  B1821  Open in Side Squib (RH) Circuit  B1822  Short in Side Squib (RH) Circuit (to Ground)  B1823  Short in Side Squib (RH) Circuit (to +B)  


DESCRIPTION

The front side squib RH circuit consists of the airbag sensor assembly and front seat airbag assembly RH.

This circuit instructs the SRS to deploy when deployment conditions are met.

These DTCs are stored when a malfunction is detected in the front side squib RH circuit.

DTC No. Detection Item DTC Detection Condition Trouble Area Warning Indicate Test Mode / Check Mode
B1820 Short in Side Squib (RH) Circuit One of the following conditions is met:
·

The airbag sensor assembly detects a line short circuit signal 5 times in the front side squib RH circuit during the primary check.

·

A front seat airbag assembly RH malfunction.

·

An airbag sensor assembly malfunction.


·

Front seat wire RH*

·

No. 2 floor wire

·

Front seat airbag assembly RH

·

Airbag sensor assembly


Comes on Applicable
B1821 Open in Side Squib (RH) Circuit One of the following conditions is met:
·

The airbag sensor assembly detects an open circuit signal in the front side squib RH circuit for 2 seconds.

·

A front seat airbag assembly RH malfunction.

·

An airbag sensor assembly malfunction.


·

Front seat wire RH*

·

No. 2 floor wire

·

Front seat airbag assembly RH

·

Airbag sensor assembly


Comes on Applicable
B1822 Short in Side Squib (RH) Circuit (to Ground) One of the following conditions is met:
·

The airbag sensor assembly detects a short circuit to ground signal in the front side squib RH circuit for 0.5 seconds.

·

A front seat airbag assembly RH malfunction.

·

An airbag sensor assembly malfunction.


·

Front seat wire RH*

·

No. 2 floor wire

·

Front seat airbag assembly RH

·

Airbag sensor assembly


Comes on Applicable
B1823 Short in Side Squib (RH) Circuit (to +B) One of the following conditions is met:
·

The airbag sensor assembly detects a short circuit to B+ signal in the front side squib RH circuit for 0.5 seconds.

·

A front seat airbag assembly RH malfunction.

·

An airbag sensor assembly malfunction.


·

Front seat wire RH*

·

No. 2 floor wire

·

Front seat airbag assembly RH

·

Airbag sensor assembly


Comes on Applicable

*: for Separate Seat


WIRING DIAGRAM

for Separate Seat:
C413904
1.719,0.448 2.333,0.646 0.615,0.198 10 false 1 1.719,1.26 2.333,1.458 0.615,0.198 10 false 2 5.615,0.583 6.229,0.781 0.615,0.198 10 false SFR+ 5.646,1.375 6.26,1.573 0.615,0.198 10 false SFR- 5.417,0.469 5.625,0.688 0.208,0.219 10 false 9 5.344,1.26 5.594,1.448 0.25,0.188 10 false 10 0.552,1.854 1.073,2.031 0.521,0.177 10 false m3 0.552,2.021 2.781,2.354 2.229,0.333 10 false Front Seat Airbag Assembly RH 5.469,1.792 6.979,2.073 1.51,0.281 10 false W1 5.458,1.948 7.094,2.24 1.635,0.292 10 false Airbag Sensor Assembly 3.563,0.375 4.177,0.573 0.615,0.198 10 false 1 3.594,1.156 4.208,1.354 0.615,0.198 10 false 2 3.438,0.813 4.052,1.01 0.615,0.198 10 false SFR+ 3.469,1.583 4.083,1.781 0.615,0.198 10 false SFR- 3.458,0.583 4.073,0.781 0.615,0.198 10 false Wm1 3.469,1.354 4.083,1.552 0.615,0.198 10 false Wm1

for Bench Seat:
C284375
1.719,0.448 2.333,0.646 0.615,0.198 10 false 1 1.719,1.229 2.333,1.427 0.615,0.198 10 false 2 5.615,0.583 6.229,0.781 0.615,0.198 10 false SFR+ 5.635,1.354 6.25,1.552 0.615,0.198 10 false SFR- 5.385,0.458 5.646,0.667 0.26,0.208 10 false 9 5.333,1.219 5.615,1.438 0.281,0.219 10 false 10 0.479,1.823 1,2 0.521,0.177 10 false W8 0.479,2.01 2.74,2.229 2.26,0.219 10 false Front Seat Airbag Assembly RH 5.469,1.792 6.979,2.073 1.51,0.281 10 false W1 5.458,1.948 7.083,2.229 1.625,0.281 10 false Airbag Sensor 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

·

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



HINT:

To perform the simulation method, enter check mode (signal check) with the GTS (Click here Vehicle Interior>SUPPLEMENTAL RESTRAINT SYSTEMS>AIRBAG SYSTEM (for Type A)>CHECK MODE PROCEDURE), and then wiggle each connector of the airbag system or drive the vehicle on various types of road (Click here General>INTRODUCTION>HOW TO TROUBLESHOOT ECU CONTROLLED SYSTEMS>HOW TO PROCEED WITH TROUBLESHOOTING ).


PROCEDURE

1.CHECK VEHICLE CONDITION
a.

Check vehicle condition.


Result:
Proceed to
for Separate Seat Type
for Bench Seat



for Separate Seat Type

2.CHECK CONNECTORS

for Bench Seat

7.CHECK NO. 2 FLOOR WIRE
2.CHECK CONNECTORS
a.
C412967C01
0.823,1.083 1.135,1.281 0.313,0.198 10 false *1 1.365,1.073 1.677,1.271 0.313,0.198 10 false *3 2.76,1.573 3.073,1.771 0.313,0.198 10 false *2 1.906,1.073 2.219,1.271 0.313,0.198 10 false *4
*1 Front Seat Airbag Assembly RH
*2 Airbag Sensor Assembly
*3 Front Seat Wire RH
*4 No. 2 Floor Wire


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 front seat airbag assembly RH, airbag sensor assembly, front seat wire RH and No. 2 floor wire.

OK:

The connectors are properly connected.


HINT:

If the connectors are not properly connected, reconnect the connectors and proceed to the next inspection.



d.

Disconnect the connectors from the front seat airbag assembly RH, airbag sensor assembly, front seat wire RH and No. 2 floor wire.


e.

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

OK:

The terminals are not deformed or damaged.



f.

Check that the short springs of the activation prevention mechanism of the floor wire connector are not deformed or damaged.

OK:

The short springs are not deformed or damaged.



Result:
Proceed to
OK
NG



OK

3.CHECK FRONT SEAT AIRBAG ASSEMBLY RH

NG

REPLACE NO. 2 FLOOR WIRE OR FRONT SEAT WIRE RH

3.CHECK FRONT SEAT AIRBAG ASSEMBLY RH
a.
C412971C02
0.438,2.26 0.833,2.49 0.396,0.229 2.104,2.583 2.26,2.76 2.26,2.76 2.427,2.76 true 2.479,2.646 2.938,2.844 0.458,0.198 10 false *3 0.5,2.292 0.896,2.646 0.396,0.354 10 false m3 0.438,1.688 0.833,2.042 0.396,0.354 10 false *a 0.49,1.135 0.885,1.49 0.396,0.354 10 false *1 2.5,1.271 2.896,1.625 0.396,0.354 10 false *2 1.271,0.896 1.667,1.25 0.396,0.354 10 false D 1.438,0.896 1.833,1.25 0.396,0.354 10 false C 1.854,0.896 2.25,1.25 0.396,0.354 10 false B 2.021,0.896 2.417,1.25 0.396,0.354 10 false A 0.833,0.896 1.229,1.25 0.396,0.354 10 false E 0.583,0.896 0.979,1.25 0.396,0.354 10 false F
*1 Front Seat Airbag Assembly RH
*2 Airbag Sensor Assembly
*3 SST
*a Front view of wire harness connector
(to Front Seat Airbag Assembly RH)


Connect the No. 2 floor wire to the front seat wire RH and airbag sensor assembly.


b.

Connect the red wire side of SST (resistance: 2.1 Ω) to connector E.

CAUTION:

Never connect the tester to the front seat airbag assembly RH for measurement, as this may lead to a serious injury due to airbag deployment.


NOTICE:
·

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

·

Insert SST straight into the terminals of the connector.




SST
09843-18061  

c.

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


d.

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


e.

Clear the DTCs stored in memory.

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

Body Electrical > SRS Airbag > Clear DTCs
50002 188

f.

Turn the ignition switch off.


g.

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


h.

Check for DTCs.

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

Body Electrical > SRS Airbag > Trouble Codes
50001 188
Result:
Proceed to
DTCs B1820, B1821, B1822 and B1823 are not output
DTC B1820, B1821, B1822 or B1823 is output


HINT:

Codes other than DTC B1820, B1821, B1822 and B1823 may be output at this time, but they are not related to this check.



i.

Turn the ignition switch off.


j.

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


k.

Disconnect SST from connector E.



DTCs B1820, B1821, B1822 and B1823 are not output

REPLACE FRONT SEAT AIRBAG ASSEMBLY RH

Click hereVehicle Interior>SUPPLEMENTAL RESTRAINT SYSTEMS>FRONT SEAT SIDE AIRBAG ASSEMBLY (for Separate Seat Type)>REMOVAL


DTC B1820, B1821, B1822 or B1823 is output

4.CHECK FRONT SEAT AIRBAG ASSEMBLY RH CIRCUIT
4.CHECK FRONT SEAT AIRBAG ASSEMBLY RH CIRCUIT
a.
C412972C02
0.604,2.073 0.958,2.313 0.354,0.24 0.198,1.115 0.427,1.281 0.229,0.167 10 false *1 1.052,0.854 1.219,1.021 0.167,0.167 10 false D 1.198,0.854 1.365,1.021 0.167,0.167 10 false C 1.656,0.844 1.823,1.01 0.167,0.167 10 false B 0.802,0.635 0.969,0.802 0.167,0.167 10 false *3 1.969,0.823 2.135,0.99 0.167,0.167 10 false A 2.385,1.146 2.552,1.313 0.167,0.167 10 false *2 0.563,1.74 0.792,1.906 0.229,0.167 10 false *a 0.677,2.115 1,2.302 0.323,0.188 10 false m3 1.396,0.635 1.563,0.802 0.167,0.167 10 false *4 0.615,0.844 0.781,1.01 0.167,0.167 10 false E 0.344,0.844 0.51,1.01 0.167,0.167 10 false F
*1 Front Seat Airbag Assembly RH
*2 Airbag Sensor Assembly
*3 Front Seat Wire RH
*4 No. 2 Floor Wire
*a Front view of wire harness connector
(to Front Seat Airbag Assembly RH)
V100135

Release the activation prevention mechanism


Disconnect the No. 2 floor wire from the airbag sensor assembly.


b.

Check for a short to B+ in the circuit.

i.

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


ii.

Turn the ignition switch to ON.


iii.

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

Standard Voltage:
Tester Connection Switch Condition Specified Condition
m3-1 - Body ground Ignition switch ON Below 1 V
m3-2 - Body ground Ignition switch ON Below 1 V



iv.

Turn the ignition switch off.


v.

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



c.

Check for an open in the circuit.

i.

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

Standard Resistance:
Tester Connection Condition Specified Condition
m3-1 - m3-2 Always Below 1 Ω




d.

Check for a short to ground in the circuit.

i.

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

Standard Resistance:
Tester Connection Condition Specified Condition
m3-1 - Body ground Always 1 MΩ or higher
m3-2 - Body ground Always 1 MΩ or higher




e.

Check for a short in the circuit.

i.

Release the activation prevention mechanism built into connector B.

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


ii.

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

Standard Resistance:
Tester Connection Condition Specified Condition
m3-1 - m3-2 Always 1 MΩ or higher



iii.

Restore the released activation prevention mechanism of connector B to the original condition.



Result:
Proceed to
OK
NG



OK

5.CHECK DTC

NG

6.CHECK NO. 2 FLOOR WIRE
5.CHECK DTC
a.
C412968C01
0.688,1.5 1,1.698 0.313,0.198 10 false *1 2.292,1.583 2.604,1.781 0.313,0.198 10 false *2
*1 Front Seat Airbag Assembly RH
*2 Airbag Sensor Assembly


Connect the connectors to the front seat airbag assembly RH and airbag sensor assembly.


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 stored in memory.

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

Body Electrical > SRS Airbag > Trouble Codes
50001 188
Result:
Proceed to
DTCs B1820, B1821, B1822 and B1823 are not output
DTC B1820, B1821, B1822 or B1823 is output


HINT:

Codes other than DTC B1820, B1821, B1822 and B1823 may be output at this time, but they are not related to this check.




DTCs B1820, B1821, B1822 and B1823 are not output

USE SIMULATION METHOD TO CHECK

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


DTC B1820, B1821, B1822 or B1823 is output

REPLACE AIRBAG SENSOR ASSEMBLY

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


6.CHECK NO. 2 FLOOR WIRE
a.
C412974C02
0.198,2.083 0.646,2.375 0.448,0.292 0.604,2.896 0.75,2.896 0.75,2.896 1.021,2.51 true 1.583,2.875 1.427,2.875 1.427,2.875 1.208,2.51 true 0.635,1.073 0.865,1.24 0.229,0.167 10 false *1 1.448,0.854 1.615,1.021 0.167,0.167 10 false D 1.698,0.844 1.865,1.01 0.167,0.167 10 false C 2.135,0.844 2.302,1.01 0.167,0.167 10 false B 1.875,0.667 2.042,0.833 0.167,0.167 10 false *4 2.365,0.833 2.531,1 0.167,0.167 10 false A 2.792,1.146 2.958,1.313 0.167,0.167 10 false *2 0.167,1.719 0.396,1.885 0.229,0.167 10 false *a 0.26,2.156 0.792,2.469 0.531,0.313 10 false Wm1 0.229,2.792 0.75,2.969 0.521,0.177 10 false SFR+ 1.635,2.813 2.042,3.021 0.406,0.208 10 false SFR- 1.208,0.667 1.375,0.833 0.167,0.167 10 false *3 1.01,0.854 1.177,1.021 0.167,0.167 10 false E 0.771,0.854 0.938,1.021 0.167,0.167 10 false F
*1 Front Seat Airbag Assembly RH
*2 Airbag Sensor Assembly
*3 Front Seat Wire RH
*4 No. 2 Floor Wire
*a Front view of wire harness connector
(to Front Seat Wire RH)
V100135

Release the activation prevention mechanism


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


b.

Check for a short to B+ in the circuit.

i.

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


ii.

Turn the ignition switch to ON.


iii.

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

Standard Voltage:
Tester Connection Switch Condition Specified Condition
Wm1-1 (SFR+) - Body ground Ignition switch ON Below 1 V
Wm1-2 (SFR-) - Body ground Ignition switch ON Below 1 V



iv.

Turn the ignition switch off.


v.

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



c.

Check for an open in the circuit.

i.

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

Standard Resistance:
Tester Connection Condition Specified Condition
Wm1-1 (SFR+) - Wm1-2 (SFR-) Always Below 1 Ω




d.

Check for a short to ground in the circuit.

i.

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

Standard Resistance:
Tester Connection Condition Specified Condition
Wm1-1 (SFR+) - Body ground Always 1 MΩ or higher
Wm1-2 (SFR-) - Body ground Always 1 MΩ or higher




e.

Check for a short in the circuit.

i.

Release the activation prevention mechanism built into connector B.

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


ii.

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

Standard Resistance:
Tester Connection Condition Specified Condition
Wm1-1 (SFR+) - Wm1-2 (SFR-) Always 1 MΩ or higher



iii.

Restore the released activation prevention mechanism of connector B to the original condition.



Result:
Proceed to
OK
NG



OK

REPLACE FRONT SEAT WIRE RH

NG

REPLACE NO. 2 FLOOR WIRE

7.CHECK NO. 2 FLOOR WIRE
a.
C280784C05
0.469,1.104 0.781,1.302 0.313,0.198 10 false *1 1.292,1.469 1.604,1.667 0.313,0.198 10 false *3 2.385,1.583 2.698,1.781 0.313,0.198 10 false *2
*1 Front Seat Airbag Assembly RH
*2 Airbag Sensor Assembly
*3 No. 2 Floor Wire


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 front seat airbag assembly RH and airbag sensor assembly.

OK:

The connectors are properly connected.


HINT:

If the connectors are not properly connected, reconnect the connectors and proceed to the next inspection.



d.

Disconnect the connectors from the front seat airbag assembly RH and airbag sensor assembly.


e.

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

OK:

The terminals are not deformed or damaged.



f.

Check that the short springs of the activation prevention mechanism of the floor wire connector are not deformed or damaged.

OK:

The short springs are not deformed or damaged.



Result:
Proceed to
OK
NG



OK

8.CHECK FRONT SEAT AIRBAG ASSEMBLY RH

NG

REPLACE NO. 2 FLOOR WIRE

8.CHECK FRONT SEAT AIRBAG ASSEMBLY RH
a.
C414886C01
0.323,2.26 0.719,2.49 0.396,0.229 1.781,2.677 1.938,2.854 1.938,2.854 2.104,2.854 true 2.177,2.792 2.635,2.99 0.458,0.198 10 false *3 0.427,2.292 0.823,2.646 0.396,0.354 10 false W8 0.375,1.802 0.771,2.156 0.396,0.354 10 false *a 0.677,1.208 1.073,1.563 0.396,0.354 10 false *1 2.313,1.302 2.708,1.656 0.396,0.354 10 false *2 0.802,0.948 1.198,1.302 0.396,0.354 10 false D 1.188,0.948 1.583,1.302 0.396,0.354 10 false C 1.698,0.948 2.094,1.302 0.396,0.354 10 false B 1.854,0.948 2.25,1.302 0.396,0.354 10 false A
*1 Front Seat Airbag Assembly RH
*2 Airbag Sensor Assembly
*3 SST
*a Front view of wire harness connector
(to Front Seat Airbag Assembly RH)


Connect the No. 2 floor wire to the airbag sensor assembly.


b.

Connect the red wire side of SST (resistance: 2.1 Ω) to connector E.

CAUTION:

Never connect the tester to the front seat airbag assembly RH for measurement, as this may lead to a serious injury due to airbag deployment.


NOTICE:
·

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

·

Insert SST straight into the terminals of the connector.




SST
09843-18061  

c.

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


d.

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


e.

Clear the DTCs stored in memory.

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

Body Electrical > SRS Airbag > Clear DTCs
50002 188

f.

Turn the ignition switch off.


g.

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


h.

Check for DTCs.

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

Body Electrical > SRS Airbag > Trouble Codes
50001 188
Result:
Proceed to
DTCs B1820, B1821, B1822 and B1823 are not output
DTC B1820, B1821, B1822 or B1823 is output


HINT:

Codes other than DTC B1820, B1821, B1822 and B1823 may be output at this time, but they are not related to this check.



i.

Turn the ignition switch off.


j.

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


k.

Disconnect SST from connector C.



DTCs B1820, B1821, B1822 and B1823 are not output

REPLACE FRONT SEAT AIRBAG ASSEMBLY RH

Click hereVehicle Interior>SUPPLEMENTAL RESTRAINT SYSTEMS>FRONT SEAT SIDE AIRBAG ASSEMBLY (for Bench Seat Type)>REMOVAL


DTC B1820, B1821, B1822 or B1823 is output

9.CHECK NO. 2 FLOOR WIRE
9.CHECK NO. 2 FLOOR WIRE
a.
C414887C01
0.333,2.198 0.688,2.438 0.354,0.24 0.688,1.229 0.917,1.396 0.229,0.167 10 false *1 0.823,0.979 0.99,1.146 0.167,0.167 10 false D 1.135,0.99 1.302,1.156 0.167,0.167 10 false C 1.583,0.99 1.75,1.156 0.167,0.167 10 false B 1.302,0.708 1.469,0.875 0.167,0.167 10 false *3 1.896,0.979 2.063,1.146 0.167,0.167 10 false A 2.354,1.323 2.521,1.49 0.167,0.167 10 false *2 0.292,1.781 0.521,1.948 0.229,0.167 10 false *a 0.427,2.24 0.75,2.427 0.323,0.188 10 false W8
*1 Front Seat Airbag Assembly RH
*2 Airbag Sensor Assembly
*3 No. 2 Floor Wire
*a Front view of wire harness connector
(to Front Seat Airbag Assembly RH)
V100135

Release the activation prevention mechanism


Disconnect the No. 2 floor wire from the airbag sensor assembly.


b.

Check for a short to B+ in the circuit.

i.

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


ii.

Turn the ignition switch to ON.


iii.

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

Standard Voltage:
Tester Connection Switch Condition Specified Condition
W8-1 - Body ground Ignition switch ON Below 1 V
W8-2 - Body ground Ignition switch ON Below 1 V



iv.

Turn the ignition switch off.


v.

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



c.

Check for an open in the circuit.

i.

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

Standard Resistance:
Tester Connection Condition Specified Condition
W8-1 - W8-2 Always Below 1 Ω




d.

Check for a short to ground in the circuit.

i.

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

Standard Resistance:
Tester Connection Condition Specified Condition
W8-1 - Body ground Always 1 MΩ or higher
W8-2 - Body ground Always 1 MΩ or higher




e.

Check for a short in the circuit.

i.

Release the activation prevention mechanism built into connector B.

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


ii.

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

Standard Resistance:
Tester Connection Condition Specified Condition
W8-1 - W8-2 Always 1 MΩ or higher



iii.

Restore the released activation prevention mechanism of connector B to the original condition.



Result:
Proceed to
OK
NG



OK

10.CHECK DTC

NG

REPLACE NO. 2 FLOOR WIRE

10.CHECK DTC
a.
C238241C29
0.729,1.521 1.042,1.719 0.313,0.198 10 false *1 2.167,1.594 2.479,1.792 0.313,0.198 10 false *2
*1 Front Seat Airbag Assembly RH
*2 Airbag Sensor Assembly


Connect the connectors to the front seat airbag assembly RH and airbag sensor assembly.


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 stored in memory.

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

Body Electrical > SRS Airbag > Trouble Codes
50001 188
Result:
Proceed to
DTCs B1820, B1821, B1822 and B1823 are not output
DTC B1820, B1821, B1822 or B1823 is output


HINT:

Codes other than DTC B1820, B1821, B1822 and B1823 may be output at this time, but they are not related to this check.




DTCs B1820, B1821, B1822 and B1823 are not output

USE SIMULATION METHOD TO CHECK

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


DTC B1820, B1821, B1822 or B1823 is output

REPLACE AIRBAG SENSOR ASSEMBLY

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