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

SUPPLEMENTAL RESTRAINT SYSTEMS  AIRBAG SYSTEM(for Type C)  B1684  Lost Communication with Rear Door Side Airbag Sensor LH  B1689  Rear Door Side Airbag Sensor LH Initialization Incomplete  


DESCRIPTION

The side collision sensor LH circuit consists of the airbag sensor assembly, No. 4 side airbag sensor LH, No. 2 side airbag sensor LH and No. 3 side airbag sensor assembly LH.

The No. 3 side airbag sensor LH detects impacts to the vehicle and sends signals to the airbag sensor assembly to determine if the SRS should be deployed.

These DTCs are stored when a malfunction is detected in the circuit for the side collision sensor LH circuit.

DTC No. Detection Item DTC Detection Condition Trouble Area Warning Indicate Test Mode / Check Mode
B1684 Lost Communication with Rear Door Side Airbag Sensor LH 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 circuit for the side collision sensor LH for 2 seconds.

·

A No. 2 side airbag sensor LH.

·

A No. 3 side airbag sensor assembly LH malfunction.

·

An airbag sensor assembly malfunction.


·

No. 2 rear door wire

·

Floor wire

·

Front door wire LH

·

No. 2 side airbag sensor LH

·

No. 3 side airbag sensor assembly LH

·

Airbag sensor assembly


Comes on Not applicable
B1689 Rear Door Side Airbag Sensor LH Initialization Incomplete 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 circuit for the side collision sensor LH for 2 seconds.

·

A No. 2 side airbag sensor LH.

·

A No. 3 side airbag sensor assembly LH malfunction.

·

An airbag sensor assembly malfunction.


·

No. 2 rear door wire

·

Floor wire

·

Front door wire LH

·

No. 2 side airbag sensor LH

·

No. 3 side airbag sensor assembly LH

·

Airbag sensor assembly


Comes on Not applicable

WIRING DIAGRAM

C417471
5.542,4.75 6.24,5.656 0.698,0.906 10 false V1 5.542,4.917 7.125,5.125 1.583,0.208 10 false Airbag Sensor Assembly 5.667,0.5 6.5,1.198 0.833,0.698 10 false BBL+ 5.646,1.125 6.479,1.823 0.833,0.698 10 false BBL- 5.365,0.385 6.208,1.385 0.844,1 10 false 32 5.365,0.948 6.031,1.781 0.667,0.833 10 false 31 0.271,2.781 3.229,3.531 2.958,0.75 10 false No. 4 Side Airbag Sensor LH 0.26,2.615 0.833,3.167 0.573,0.552 10 false V24 1.74,0.385 2.771,1.188 1.031,0.802 10 false 4 1.729,0.979 2.76,1.781 1.031,0.802 10 false 3 1.719,1.531 2.75,2.333 1.031,0.802 10 false 1 1.708,2.156 2.74,2.958 1.031,0.802 10 false 2 1.188,0.521 2.135,1.021 0.948,0.5 10 false BBL+ 1.198,1.094 3.083,1.896 1.885,0.802 10 false BBL- 1.188,2.281 3.073,3.083 1.885,0.802 10 false BCL- 1.177,1.708 2.125,2.208 0.948,0.5 10 false BCL+ 4.177,1.708 5.125,2.208 0.948,0.5 10 false BCL+ 4.188,4.354 6.073,5.156 1.885,0.802 10 false BDL- 3.927,1.563 4.958,2.365 1.031,0.802 10 false 4 3.917,2.135 4.948,2.938 1.031,0.802 10 false 3 4.198,2.302 6.083,3.104 1.885,0.802 10 false BCL- 1.198,3.792 2.146,4.292 0.948,0.5 10 false BDL+ 4.167,3.802 5.115,4.302 0.948,0.5 10 false BDL+ 2.677,4.552 4.563,5.354 1.885,0.802 10 false BDL- 2.646,4 3.594,4.5 0.948,0.5 10 false BDL+ 1.219,4.344 3.104,5.146 1.885,0.802 10 false BDL- 3.625,4.792 5.656,5.719 2.031,0.927 10 false No. 2 Side Airbag Sensor LH 3.604,4.625 5.51,5.073 1.906,0.448 10 false V25 0.281,4.854 2.917,5.396 2.635,0.542 10 false No. 3 Side Airbag Sensor LH 0.281,4.677 0.781,5.073 0.5,0.396 10 false T7 2.677,3.802 3.135,4 0.458,0.198 10 false TV2 2.677,4.344 3.135,4.542 0.458,0.198 10 false TV2 3.958,4.219 4.99,5.021 1.031,0.802 10 false 2 2.76,3.594 3.792,4.396 1.031,0.802 10 false 2 1.667,4.229 2.698,5.031 1.031,0.802 10 false 1 1.677,3.677 2.708,4.479 1.031,0.802 10 false 2 3.938,3.667 4.969,4.469 1.031,0.802 10 false 1 2.76,4.146 3.792,4.948 1.031,0.802 10 false 1

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 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 No. 2 side airbag sensor LH and No. 3 side airbag sensor LH.


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



The connectors are properly connected

2.CHECK CONNECTORS

The connectors are not properly connected

CONNECT CONNECTORS PROPERLY

2.CHECK CONNECTORS
a.
C301835C22
0.604,1.458 0.917,1.615 0.313,0.156 10 false *1 2.573,1.469 2.885,1.625 0.313,0.156 10 false *2 1.385,0.802 1.698,0.958 0.313,0.156 10 false *3 1.896,0.792 2.208,0.948 0.313,0.156 10 false *4
*1 No. 3 Side Airbag Sensor LH
*2 No. 2 Side Airbag Sensor LH
*3 No. 2 Rear Door Wire
*4 Floor Wire


Disconnect the connectors from the No. 2 side airbag sensor LH and No. 3 side airbag sensor LH.


b.

Check that the connectors (on the No. 2 side airbag sensor LH and No. 3 side airbag sensor LH 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

3.CHECK NO. 3 SIDE AIRBAG SENSOR LH CIRCUIT

The connectors are deformed or damaged

REPLACE NO. 2 REAR DOOR WIRE LH OR FLOOR WIRE

3.CHECK NO. 3 SIDE AIRBAG SENSOR LH CIRCUIT
a.
C418108C04
0.708,0.802 1.083,1.052 0.375,0.25 2.24,2.906 2.74,3.146 0.5,0.24 1.438,1.51 1.604,1.51 1.604,1.51 1.844,0.979 true 2.479,1.51 2.302,1.51 2.302,1.51 1.99,0.979 true 0.99,3.406 1.156,3.406 1.156,3.406 1.635,3.729 true 1.365,3.021 1.531,3.021 1.531,3.021 1.813,3.708 true 1.917,4.198 2.135,4.344 2.135,4.344 2.292,4.344 true 0.448,2.583 0.76,2.74 0.313,0.156 10 false *1 2.635,2.583 2.948,2.74 0.313,0.156 10 false *2 1.823,2.354 2.135,2.51 0.313,0.156 10 false *4 0.781,0.292 1.094,0.448 0.313,0.156 10 false *a 0.531,2.927 0.844,3.083 0.313,0.156 10 false *b 0.771,0.844 1.115,1.083 0.344,0.24 10 false T7 2.396,2.125 2.708,2.281 0.313,0.156 10 false A 2.073,2.125 2.385,2.281 0.313,0.156 10 false B 1.021,2.125 1.333,2.281 0.313,0.156 10 false E 0.719,2.125 1.031,2.281 0.313,0.156 10 false F 2.396,2.948 2.708,3.104 0.313,0.156 10 false V25 2.563,1.427 3.125,1.688 0.563,0.26 10 false BDL+ 1.052,1.417 1.615,1.677 0.563,0.26 10 false BDL- 0.99,2.927 1.552,3.188 0.563,0.26 10 false BDL- 0.542,3.333 1.104,3.594 0.563,0.26 10 false BDL+ 2.375,4.26 2.688,4.417 0.313,0.156 10 false *5 1.469,2.125 1.781,2.281 0.313,0.156 10 false D 1.625,2.125 1.938,2.281 0.313,0.156 10 false C 1.219,2.354 1.531,2.51 0.313,0.156 10 false *3
*1 No. 3 Side Airbag Sensor LH
*2 No. 2 Side Airbag Sensor LH
*3 No. 2 Rear Door Wire
*4 Floor Wire
*5 Service Wire
*a Front view of wire harness connector
(to No. 3 Side Airbag Sensor LH)
*b Front view of wire harness connector
(to No. 2 Side Airbag Sensor LH)


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
T7-2 (BDL+) - Body ground Engine switch on (IG) Below 1 V
T7-1 (BDL-) - 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 1 (BDL+) and 2 (BDL-) 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
T7-2 (BDL+) - T7-1 (BDL-) 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
T7-2 (BDL+) - T7-1 (BDL-) Always 1 MΩ or higher
T7-2 (BDL+) - Body ground Always 1 MΩ or higher
T7-1 (BDL-) - Body ground Always 1 MΩ or higher



Result:
Proceed to
OK
NG



OK

4.CHECK NO. 3 SIDE AIRBAG SENSOR LH

NG

6.CHECK FLOOR WIRE
4.CHECK NO. 3 SIDE AIRBAG SENSOR LH
a.
C238395C07
0.729,1.563 1,1.74 0.271,0.177 10 false *1 2.583,1.542 2.896,1.75 0.313,0.208 10 false *2
*1 No. 3 Side Airbag Sensor RH
*2 No. 2 Side Airbag Sensor LH


Connect the connector to the No. 2 side airbag sensor LH.


b.

Interchange the No. 3 side airbag sensor LH with RH and connect the connectors to them.


c.

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


d.

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


e.

Clear the DTCs stored in memory.

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

Body Electrical > SRS Airbag > Clear DTCs
50002 188

f.

Turn the engine switch off.


g.

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


h.

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 B1684 or B1689 is output
DTC B1673 or B1674 is output
DTCs B1673, B1674, B1684 and B1689 are not output


HINT:

Codes other than DTC B1673, B1674, B1684 and B1689 may be output at this time, but they are not related to this check.



i.

Turn the engine switch off.


j.

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


k.

Return the No. 3 side airbag sensor RH and LH to their original positions and connect the connectors to them.



DTC B1684 or B1689 is output

5.CHECK NO. 2 SIDE AIRBAG SENSOR LH

DTC B1673 or B1674 is output

REPLACE NO. 3 SIDE AIRBAG SENSOR LH

Click hereVehicle Interior>SUPPLEMENTAL RESTRAINT SYSTEMS>SIDE AIRBAG SENSOR (for Rear Door)>REMOVAL


DTCs B1673, B1674, B1684 and B1689 are not output

USE SIMULATION METHOD TO CHECK

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


5.CHECK NO. 2 SIDE AIRBAG SENSOR LH
a.

Interchange the No. 2 side airbag sensor LH with RH and connect the connectors to them.


B529883C08
0.969,1.521 1.24,1.719 0.271,0.198 10 false *1 2.323,1.531 2.594,1.729 0.271,0.198 10 false *2
*1 No. 2 Side Airbag Sensor RH
*2 No. 4 Side Airbag Sensor LH


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 stored 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 B1673 or B1674 is output
DTC B1684 or B1689 is output
DTCs B1673, B1674, B1684 and B1689 are not output


HINT:

Codes other than DTC B1673, B1674, B1684 and B1689 may be output at this time, but they are not related to this check.



h.

Turn the engine switch off.


i.

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


j.

Return the No. 2 side airbag sensor RH and LH to their original positions and connect the connectors to them.



DTC B1673 or B1674 is output

REPLACE AIRBAG SENSOR ASSEMBLY

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


DTC B1684 or B1689 is output

REPLACE NO. 2 SIDE AIRBAG SENSOR LH

Click hereVehicle Interior>SUPPLEMENTAL RESTRAINT SYSTEMS>SIDE AIRBAG SENSOR (for Rear Pillar)>REMOVAL


DTCs B1673, B1674, B1684 and B1689 are not output

USE SIMULATION METHOD TO CHECK

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


6.CHECK FLOOR WIRE
a.
C418501C03
1.854,2.958 2.344,3.198 0.49,0.24 2.427,0.438 2.865,0.677 0.438,0.24 1.26,0.99 1.438,0.99 1.438,0.99 1.729,0.521 true 2.323,0.969 2.135,0.969 2.135,0.969 1.938,0.521 true 2.448,4.344 2.323,4.344 2.323,4.344 2.031,3.802 true 1.438,4.333 1.542,4.333 1.542,4.333 1.802,3.781 true 2,4.344 1.865,4.344 1.865,4.344 1.865,4.125 true 0.406,2.396 0.719,2.552 0.313,0.156 10 false *1 2.625,2.354 2.938,2.51 0.313,0.156 10 false *2 1.167,2.125 1.479,2.281 0.313,0.156 10 false *3 2.073,4.271 2.385,4.427 0.313,0.156 10 false *5 0.771,0.24 1.083,0.396 0.313,0.156 10 false *a 0.969,2.99 1.281,3.146 0.313,0.156 10 false *b 1.958,3 2.271,3.156 0.313,0.156 10 false V25 2.51,0.479 2.823,0.635 0.313,0.156 10 false TV2 2.385,1.885 2.698,2.042 0.313,0.156 10 false A 2.094,1.885 2.406,2.042 0.313,0.156 10 false B 1.646,1.885 1.958,2.042 0.313,0.156 10 false C 1.385,1.875 1.698,2.031 0.313,0.156 10 false D 0.885,0.896 1.313,1.104 0.427,0.208 10 false BDL+ 2.406,0.885 2.833,1.094 0.427,0.208 10 false BDL- 1.052,4.24 1.583,4.542 0.531,0.302 10 false BDL+ 2.521,4.26 3.021,4.563 0.5,0.302 10 false BDL- 1.844,2.125 2.156,2.323 0.313,0.198 10 false *4 0.938,1.885 1.094,2.083 0.156,0.198 10 false E 0.688,1.885 1.021,2.219 0.333,0.333 10 false F
*1 No. 3 Side Airbag Sensor LH
*2 No. 2 Side Airbag Sensor LH
*3 No. 2 Rear Door Wire
*4 Floor Wire
*5 Service Wire
*a Front view of wire harness connector
(to No. 2 Rear Door Wire)
*b Front view of wire harness connector
(to No. 2 Side Airbag Sensor LH)


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
TV2-2 (BDL+) - Body ground Engine switch on (IG) Below 1 V
TV2-1 (BDL-) - 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 1 (BDL+) and 2 (BDL-) 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
TV2-2 (BDL+) - TV2-1 (BDL-) 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
TV2-2 (BDL+) - TV2-1 (BDL-) Always 1 MΩ or higher
TV2-2 (BDL+) - Body ground Always 1 MΩ or higher
TV2-1 (BDL-) - Body ground Always 1 MΩ or higher



Result:
Proceed to
OK
NG



OK

REPLACE NO. 2 REAR DOOR WIRE

NG

REPLACE FLOOR WIRE