RM3660EC _58 Vehicle Interior _080741 SUPPLEMENTAL RESTRAINT SYSTEMS _0584471 AIRBAG SYSTEM(except NR Series Engine) C

SUPPLEMENTAL RESTRAINT SYSTEMS  AIRBAG SYSTEM(except NR Series Engine)  B00751A  Second Row Right Seat Belt Pretensioner Deployment Control Circuit Resistance Below Threshold  


DESCRIPTION

DTC No. Detection Item DTC Detection Condition Trouble Area Warning Indicate DTC Output from Priority Test Mode / Check Mode
B00751A Second Row Right Seat Belt Pretensioner Deployment Control Circuit Resistance Below Threshold
·

The airbag sensor with ECU assembly detects a line short in the rear pretensioner squib RH circuit for 2 seconds during the primary check.

·

Rear 3 point type seat outer belt assembly RH malfunction

·

Airbag sensor with ECU assembly malfunction


·

Harness or connector

·

Rear 3 point type seat outer belt assembly RH

·

Airbag sensor with ECU assembly


Comes on SRS Airbag A Applies to check mode

WIRING DIAGRAM

B665395E71
5.031,3.083 6.219,3.479 1.188,0.396 10 false Airbag Sensor with ECU Assembly 5.031,2.917 6.698,3.438 1.667,0.521 10 false O165 4.781,1.333 5.583,1.979 0.802,0.646 10 false 5 4.771,1.896 5.573,2.542 0.802,0.646 10 false 6 4.958,1.333 5.76,1.979 0.802,0.646 10 false PRR+ 4.958,1.896 5.76,2.542 0.802,0.646 10 false PRR- 0.875,2.406 2.542,2.927 1.667,0.521 10 false O4 0.875,2.583 2.844,2.948 1.969,0.365 10 false Rear 3 Point Type Seat Outer Belt Assembly RH 2.094,1.896 2.896,2.542 0.802,0.646 10 false 2 2.083,1.333 2.885,1.979 0.802,0.646 10 false 1 1.719,1.333 2.521,1.979 0.802,0.646 10 false RR+ 1.74,1.885 2.542,2.531 0.802,0.646 10 false RR-

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

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 sensor with ECU assembly, refer to work procedure.

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 hereVehicle Interior>SUPPLEMENTAL RESTRAINT SYSTEMS>AIRBAG SYSTEM (except NR Series Engine)>CHECK MODE PROCEDURE

·

Perform the simulation method while checking the Data List.

Click hereVehicle Interior>SUPPLEMENTAL RESTRAINT SYSTEMS>AIRBAG SYSTEM (except NR Series Engine)>DATA LIST / ACTIVE TEST



PROCEDURE

1.CLEAR DTC

Pre-procedure1

a.

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


Procedure1

b.

Clear the DTCs stored in memory.

Body Electrical > SRS Airbag > Clear DTCs
50002 444
Result:
Proceed to
NEXT



Post-procedure1

c.

Turn the ignition switch off.



NEXT

2.CHECK DTC
2.CHECK DTC

Pre-procedure1

a.

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


Procedure1

b.

Check for DTCs.

Body Electrical > SRS Airbag > Trouble Codes
50001 444
Result:
Result Proceed to
B00751A is output A
B00751A is not output B



Post-procedure1

c.

None



A

3.CHECK CONNECTION OF CONNECTORS

B

USE SIMULATION METHOD TO CHECK

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


3.CHECK CONNECTION OF CONNECTORS

Pre-procedure1

a.

Turn the ignition switch off.


b.

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


Procedure1

c.

Check that the connectors are properly connected to the rear 3 point type seat outer belt assembly RH and airbag sensor with ECU assembly.

OK:

The connectors are properly connected.


Result:
Proceed to
OK
NG



Post-procedure1

d.

None



OK

4.CHECK CONNECTORS

NG

CONNECT CONNECTORS PROPERLY

4.CHECK CONNECTORS

Pre-procedure1

a.
C400937C08
0.656,1.531 0.969,1.729 0.313,0.198 10 false *1 1.26,1.531 1.573,1.729 0.313,0.198 10 false *3 2.198,1.635 2.51,1.833 0.313,0.198 10 false *2
*1 Rear 3 Point Type Seat Outer Belt Assembly RH
*2 Airbag Sensor with ECU Assembly
*3 Wire Harness


Disconnect the airbag sensor with ECU assembly connector.


b.

Disconnect the rear 3 point type seat outer belt assembly RH connector.


Procedure1

c.

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

OK:

The terminals 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.


Result:
Proceed to
OK
NG



Post-procedure1

e.

None



OK

5.CLEAR DTC

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

5.CLEAR DTC

Pre-procedure1

a.
E441543C24
0.375,2.25 0.823,2.51 0.448,0.26 1.76,2.344 1.938,2.448 1.938,2.448 2.083,2.448 true 0.615,1.167 1.104,1.573 0.49,0.406 10 false *1 2.24,1.292 2.719,1.708 0.479,0.417 10 false *2 1.823,0.958 2.208,1.479 0.385,0.521 10 false A 1.667,0.958 2.156,1.438 0.49,0.479 10 false B 1.156,0.958 1.906,1.458 0.75,0.5 10 false C 0.823,0.958 1.604,1.354 0.781,0.396 10 false D 2.115,2.375 2.552,2.708 0.438,0.333 10 false *4 0.333,1.896 0.729,2.26 0.396,0.365 10 false *a 0.51,2.302 0.958,2.771 0.448,0.469 10 false O4 1.385,1.135 1.823,1.469 0.438,0.333 10 false *3
*1 Rear 3 Point Type Seat Outer Belt Assembly RH
*2 Airbag Sensor with ECU Assembly
*3 Wire Harness
*4 SST
*a Front view of wire harness connector
(to Rear 3 Point Type Seat Outer Belt Assembly RH)


Connect the airbag sensor with ECU assembly connector.


b.

Connect SST (resistance: 2.1 Ω) to connector C.

CAUTION:

Never connect the tester to the rear 3 point type seat outer belt assembly RH 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 SST.

·

Insert SST straight into the terminals of the connector.




SST
09843-18061  

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.


Procedure1

e.

Clear the DTCs stored in memory.

Body Electrical > SRS Airbag > Clear DTCs
50002 444
Result:
Proceed to
NEXT



Post-procedure1

f.

Turn the ignition switch off.



NEXT

6.CHECK REAR 3 POINT TYPE SEAT OUTER BELT ASSEMBLY RH
6.CHECK REAR 3 POINT TYPE SEAT OUTER BELT ASSEMBLY RH

Pre-procedure1

a.

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


Procedure1

b.

Check for DTCs.

Body Electrical > SRS Airbag > Trouble Codes
50001 444
Result:
Result Proceed to
B00751A is not output A
B00751A is output B


HINT:

Codes other than DTC B00751A may be output at this time, but they are not related to this check.



Post-procedure1

c.

Turn the ignition switch off.


d.

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


e.

Disconnect SST from connector C.



A

REPLACE REAR 3 POINT TYPE SEAT OUTER BELT ASSEMBLY RH

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


B

7.CHECK HARNESS AND CONNECTOR
7.CHECK HARNESS AND CONNECTOR

Pre-procedure1

a.

Disconnect the airbag sensor with ECU assembly connector.


Procedure1

b.
E441544C31
0.469,2.219 0.927,2.458 0.458,0.24 0.813,2.677 1.021,2.677 1.021,2.677 1.271,2.229 true 1.448,2.229 1.729,2.656 1.729,2.656 1.979,2.656 true 0.563,1.198 0.875,1.354 0.313,0.156 10 false *1 2.24,1.292 2.552,1.448 0.313,0.156 10 false *2 1.229,1.146 1.542,1.302 0.313,0.156 10 false *3 0.333,1.906 0.646,2.125 0.313,0.219 10 false *a 0.615,2.26 0.99,2.479 0.375,0.219 10 false O4 1.823,0.958 2.021,1.146 0.198,0.188 10 false A 1.521,0.958 1.719,1.167 0.198,0.208 10 false B 1.01,0.958 1.208,1.135 0.198,0.177 10 false C 0.667,0.958 0.823,1.135 0.156,0.177 10 false D 0.51,2.594 1,2.792 0.49,0.198 10 false RR+ 2.031,2.583 2.406,2.76 0.375,0.177 10 false RR-
*1 Rear 3 Point Type Seat Outer Belt Assembly RH
*2 Airbag Sensor with ECU Assembly
*3 Wire Harness
*a Front view of wire harness connector
(to Rear 3 Point Type Seat Outer Belt Assembly RH)


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

Standard Resistance:
Tester Connection Condition Specified Condition
O4-1 (RR+) - O4-2 (RR-) Always 1 MΩ or higher


Result:
Proceed to
OK
NG



Post-procedure1

c.

None



OK

8.CLEAR DTC

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

8.CLEAR DTC

Pre-procedure1

a.
C400942C08
0.896,1.531 1.208,1.688 0.313,0.156 10 false *1 2.24,1.594 2.552,1.75 0.313,0.156 10 false *2 1.365,1.521 1.677,1.677 0.313,0.156 10 false *3
*1 Rear 3 Point Type Seat Outer Belt Assembly RH
*2 Airbag Sensor with ECU Assembly
*3 Wire Harness


Connect the airbag sensor with ECU assembly connector.


b.

Connect the rear 3 point type seat outer belt assembly RH 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.


Procedure1

e.

Clear the DTCs stored in memory.

Body Electrical > SRS Airbag > Clear DTCs
50002 444
Result:
Proceed to
NEXT



Post-procedure1

f.

Turn the ignition switch off.



NEXT

9.CHECK DTC
9.CHECK DTC

Pre-procedure1

a.

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


Procedure1

b.

Check for DTCs.

Body Electrical > SRS Airbag > Trouble Codes
50001 444
Result:
Result Proceed to
B00751A is not output A
B00751A is output B


HINT:

Codes other than DTC B00751A may be output at this time, but they are not related to this check.



Post-procedure1

c.

None



A

USE SIMULATION METHOD TO CHECK

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


B

REPLACE AIRBAG SENSOR WITH ECU ASSEMBLY

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