RM36D0EC _58 Vehicle Interior _083100 SUPPLEMENTAL RESTRAINT SYSTEMS _0694957 AIRBAG SYSTEM(for SFTM Made) C

SUPPLEMENTAL RESTRAINT SYSTEMS  AIRBAG SYSTEM(for SFTM Made)  B00701A  Driver Seat Belt Pretensioner "A" Deployment Control Circuit Resistance Below Threshold  


DESCRIPTION

DTC No. Detection Item DTC Detection Condition Trouble Area Warning Indicate Test Mode / Check Mode
B00701A Driver Seat Belt Pretensioner A" Deployment Control" Circuit Resistance Below Threshold One of the following conditions is met:
·

The airbag ECU assembly detects a line short in the driver seat pretensioner squib circuit for 2 seconds during the primary check

·

Front seat outer belt assembly LH malfunction

·

Airbag ECU assembly malfunction


·

Wire harness

·

Front seat outer belt assembly LH

·

Airbag ECU assembly


Comes on Applicable

WIRING DIAGRAM

E511511E09
5.323,1.677 5.656,1.865 0.333,0.188 10 false N21 5.396,0.323 5.5,0.469 0.104,0.146 10 false 5 5.604,0.406 5.875,0.594 0.271,0.188 10 false PL+ 5.396,1.104 5.5,1.25 0.104,0.146 10 false 6 1.729,1.104 1.906,1.271 0.177,0.167 10 false 2 1.708,0.354 1.927,0.583 0.219,0.229 10 false 1 5.604,1.188 5.938,1.365 0.333,0.177 10 false PL- 1.427,0.323 1.708,0.479 0.281,0.156 10 false L+ 1.427,1.104 1.719,1.26 0.292,0.156 10 false L- 5.333,1.833 6.927,2.146 1.594,0.313 10 false Airbag ECU Assembly 0.104,1.667 0.75,1.844 0.646,0.177 10 false N32 0.104,1.844 2.542,2.094 2.438,0.25 10 false Front Seat Outer Belt Assembly LH

CAUTION / NOTICE / HINT

NOTICE:
·

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

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

·

When disconnecting and reconnecting the auxiliary battery

HINT:

When disconnecting and reconnecting the auxiliary 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 ECU 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 (Vehicle Interior>SUPPLEMENTAL RESTRAINT SYSTEMS>AIRBAG SYSTEM (for SFTM Made)>CHECK MODE PROCEDURE), and then wiggle each connector of the airbag system or drive the vehicle on various types of road (General>INTRODUCTION>HOW TO TROUBLESHOOT ECU CONTROLLED SYSTEMS>HOW TO PROCEED WITH TROUBLESHOOTING).


PROCEDURE

1.CHECK DTC
a.

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


b.

Check for DTCs.

Body Electrical > SRS Airbag > Trouble Codes
50001 444

Result:
Proceed to
DTC B00701A is output
Past DTC B00701A is output



DTC B00701A is output

2.CHECK CONNECTION OF CONNECTORS

Past DTC B00701A is output

USE SIMULATION METHOD TO CHECK

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

HINT:
·

To perform the simulation method, enter check mode (signal check) with the GTS.

Click hereVehicle Interior>SUPPLEMENTAL RESTRAINT SYSTEMS>AIRBAG SYSTEM (for SFTM Made)>CHECK MODE PROCEDURE

·

Perform the simulation method while checking the Data List.

Click hereVehicle Interior>SUPPLEMENTAL RESTRAINT SYSTEMS>AIRBAG SYSTEM (for SFTM Made)>DATA LIST / ACTIVE TEST




2.CHECK CONNECTION OF CONNECTORS
a.

Turn the ignition switch off.


b.

Disconnect the cable from the negative (-) auxiliary battery terminal, and wait for at least 60 seconds.


c.

Check that the connectors are properly connected to the front seat outer belt assembly LH and airbag ECU assembly.

OK:

The connectors are properly connected.



Result:
Proceed to
OK
NG



OK

3.CHECK CONNECTORS

NG

CONNECT CONNECTORS PROPERLY

3.CHECK CONNECTORS
a.
C400945C02
0.615,0.51 0.927,0.667 0.313,0.156 10 false *1 2.229,1.677 2.542,1.833 0.313,0.156 10 false *2 1.25,0.5 1.563,0.656 0.313,0.156 10 false *3
*1 Front Seat Outer Belt Assembly LH
*2 Airbag ECU Assembly
*3 Wire Harness


Disconnect the airbag ECU assembly connector.


b.

Disconnect the front seat outer belt assembly LH connector.


c.

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

OK:

The terminals of the connectors are not deformed or damaged.



d.

Check that the connectors are not loose, deformed or damaged.

OK:

The connector locking button is not disengaged, and the claw of the lock is not deformed or damaged.



e.

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

OK:

The short springs are not deformed or damaged.



Result:
Proceed to
OK
NG



OK

4.CHECK FRONT SEAT OUTER BELT ASSEMBLY LH

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

4.CHECK FRONT SEAT OUTER BELT ASSEMBLY LH
a.
C238359C87
0.396,2.25 0.74,2.5 0.344,0.25 1.781,2.302 1.927,2.385 1.927,2.385 2.073,2.385 true 0.573,0.729 0.969,1.073 0.396,0.344 10 false *1 2.24,1.448 2.552,1.781 0.313,0.333 10 false *2 1.813,0.521 2.146,0.979 0.333,0.458 10 false A 1.656,0.521 2.24,0.958 0.583,0.438 10 false B 1.156,0.521 1.708,0.99 0.552,0.469 10 false C 0.781,0.521 1.365,1.063 0.583,0.542 10 false D 0.458,2.292 0.813,2.552 0.354,0.26 10 false N32 2.135,2.302 2.573,2.646 0.438,0.344 10 false *4 0.344,1.719 0.646,2 0.302,0.281 10 false *a 1.375,0.75 1.813,1.094 0.438,0.344 10 false *3
*1 Front Seat Outer Belt Assembly LH
*2 Airbag ECU Assembly
*3 Wire Harness
*4 SST
*a Front view of wire harness connector
(to Front Seat Outer Belt Assembly LH)


Connect the airbag ECU assembly connector.


b.

Connect the white wire side of SST (resistance 2.1 Ω) to connector C.

CAUTION:

Never connect a tester to the front seat outer belt assembly LH for measurement, as this may lead to a serious injury due to pretensioner deployment.


NOTICE:
·

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

·

Insert SST straight into the terminals of the connector.




SST
09843-18061  

c.

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


d.

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


e.

Clear the DTCs stored in memory.

Body Electrical > SRS Airbag > Clear DTCs
50002 444

f.

Turn the ignition switch off.


g.

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


h.

Check for DTCs.

Body Electrical > SRS Airbag > Trouble Codes
50001 444
Result:
Proceed to
DTC B00701A is not output
DTC B00701A is output


HINT:

Codes other than DTC B00701A 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 (-) auxiliary battery terminal, and wait for at least 60 seconds.


k.

Disconnect SST from connector C.



DTC B00701A is not output

REPLACE FRONT SEAT OUTER BELT ASSEMBLY LH

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


DTC B00701A is output

5.CHECK HARNESS AND CONNECTOR (SHORT TO GROUND)
5.CHECK HARNESS AND CONNECTOR (SHORT TO GROUND)
a.
E441547C01
0.583,1.917 1,2.167 0.417,0.25 1.458,1.927 1.656,1.635 1.656,1.635 1.906,1.635 true 0.844,1.625 1.063,1.625 1.063,1.625 1.271,1.917 true 0.573,0.583 0.823,0.896 0.25,0.313 10 false *1 2.219,1.271 2.5,1.469 0.281,0.198 10 false *2 1.833,0.354 2.021,0.531 0.188,0.177 10 false A 1.531,0.354 1.74,0.542 0.208,0.188 10 false B 1.01,0.365 1.26,0.542 0.25,0.177 10 false C 0.688,0.365 0.885,0.51 0.198,0.146 10 false D 1.969,1.563 2.271,1.854 0.302,0.292 10 false L- 0.667,1.552 0.948,1.771 0.281,0.219 10 false L+ 0.313,1.469 0.708,1.76 0.396,0.292 10 false *a 0.667,1.969 1.031,2.281 0.365,0.313 10 false N32 1.24,0.542 1.542,0.854 0.302,0.313 10 false *3
*1 Front Seat Outer Belt Assembly LH
*2 Airbag ECU Assembly
*3 Wire Harness
*a Front view of wire harness connector
(to Front Seat Outer Belt Assembly LH)
V100135

Release the activation prevention mechanism


Disconnect the N21 airbag ECU assembly connector.


b.

Release the activation prevention mechanism built into connector B.

Click hereVehicle Interior>SUPPLEMENTAL RESTRAINT SYSTEMS>AIRBAG SYSTEM (for SFTM Made)>SYSTEM DESCRIPTION


c.

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

Standard Resistance:
Tester Connection Condition Specified Condition
N32-1 (L+) - N32-2 (L-) Always 1 MΩ or higher



d.

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


Result:
Proceed to
OK
NG



OK

6.CHECK DTC

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

6.CHECK DTC
a.
C400948C07
0.813,0.948 1.125,1.104 0.313,0.156 10 false *1 2.177,1.604 2.49,1.76 0.313,0.156 10 false *2 1.302,0.948 1.615,1.104 0.313,0.156 10 false *3
*1 Front Seat Outer Belt Assembly LH
*2 Airbag ECU Assembly
*3 Wire Harness


Connect the airbag ECU assembly connector.


b.

Connect the front seat outer belt assembly LH connector.


c.

Connect the cable to the negative (-) auxiliary 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.

Body Electrical > SRS Airbag > Clear DTCs
50002 444

f.

Turn the ignition switch off.


g.

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


h.

Check for DTCs.

Body Electrical > SRS Airbag > Trouble Codes
50001 444
Result:
Proceed to
DTC B00701A is not output
DTC B00701A is output


HINT:

Codes other than DTC B00701A 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 (-) auxiliary battery terminal, and wait for at least 60 seconds.



DTC B00701A is not output

USE SIMULATION METHOD TO CHECK

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

HINT:
·

Perform the simulation method by selecting Check Mode using the GTS.

Click hereVehicle Interior>SUPPLEMENTAL RESTRAINT SYSTEMS>AIRBAG SYSTEM (for SFTM Made)>CHECK MODE PROCEDURE

·

Perform the simulation method while checking the Data List.

Click hereVehicle Interior>SUPPLEMENTAL RESTRAINT SYSTEMS>AIRBAG SYSTEM (for SFTM Made)>DATA LIST / ACTIVE TEST




DTC B00701A is output

REPLACE AIRBAG ECU ASSEMBLY

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