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

SUPPLEMENTAL RESTRAINT SYSTEMS  AIRBAG SYSTEM(for Type C)  B1676  Lost Communication with Rear Floor Airbag Sensor RH  B1677  Rear Floor Airbag Sensor RH Initialization Incomplete  


DESCRIPTION

The side collision sensor RH circuit consists of the airbag sensor assembly, No. 1 side airbag sensor RH and rear floor side airbag sensor.

The rear floor side airbag sensor 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 RH circuit.

DTC No. Detection Item DTC Detection Condition Trouble Area Warning Indicate Test Mode / Check Mode
B1676 Lost Communication with Rear Floor Airbag Sensor RH 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 RH for 2 seconds.

·

A rear floor side airbag sensor malfunction.

·

An airbag sensor assembly malfunction.


·

No. 2 floor wire

·

No. 1 side airbag sensor RH

·

Rear floor side airbag sensor

·

Airbag sensor assembly


Comes on Not applicable
B1677 Rear Floor Airbag Sensor RH 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 RH for 2 seconds.

·

A rear floor side airbag sensor malfunction.

·

An airbag sensor assembly malfunction.


·

No. 2 floor wire

·

No. 1 side airbag sensor RH

·

Rear floor side airbag sensor

·

Airbag sensor assembly


Comes on Not applicable

WIRING DIAGRAM

C412957
5.354,2.073 7.021,2.458 1.667,0.385 10 false Airbag Sensor Assembly 0.479,4.042 2.375,4.74 1.896,0.698 10 false No. 1 Side Airbag Sensor RH 4.042,4.01 6.49,4.479 2.448,0.469 10 false Rear Floor Side Airbag Sensor 5.719,0.833 6.333,1.031 0.615,0.198 10 false BCR+ 5.719,1.49 6.333,1.688 0.615,0.198 10 false BCR- 1.083,0.833 1.698,1.031 0.615,0.198 10 false BFR+ 1.094,1.458 1.708,1.656 0.615,0.198 10 false BFR- 1.083,2.802 1.698,3 0.615,0.198 10 false BER+ 1.073,3.344 1.688,3.542 0.615,0.198 10 false BER- 4.167,2.802 4.781,3 0.615,0.198 10 false BER+ 4.167,3.344 4.781,3.542 0.615,0.198 10 false BER- 5.354,0.719 5.833,1.25 0.479,0.531 10 false 28 5.365,1.313 5.844,1.844 0.479,0.531 10 false 27 1.667,0.698 2.313,1.417 0.646,0.719 10 false 4 1.667,1.333 2.531,2.75 0.865,1.417 10 false 3 1.646,2.656 2.417,3.542 0.771,0.885 10 false 1 1.635,3.198 2.271,4.01 0.635,0.813 10 false 2 3.854,3.219 4.625,4.104 0.771,0.885 10 false 1 3.844,2.646 4.479,3.458 0.635,0.813 10 false 2 5.354,1.896 5.813,2.094 0.458,0.198 10 false W1 0.469,3.885 0.927,4.083 0.458,0.198 10 false W5 4.031,3.844 4.49,4.042 0.458,0.198 10 false W23

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. 1 side airbag sensor RH and rear floor side airbag sensor.


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.
C413757C01
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 1.521,1.094 1.833,1.25 0.313,0.156 10 false *3
*1 Rear Floor Side Airbag Sensor
*2 No. 1 Side Airbag Sensor RH
*3 No. 2 Floor Wire


Disconnect the connectors from the No. 1 side airbag sensor RH and rear floor side airbag sensor.


b.

Check that the connectors (on the No. 1 side airbag sensor RH side and rear floor side 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

3.CHECK NO. 2 FLOOR WIRE

The connectors are deformed or damaged

REPLACE NO. 2 FLOOR WIRE

3.CHECK NO. 2 FLOOR WIRE
a.
C418118C02
0.708,0.802 1.135,1.042 0.427,0.24 2.24,2.906 2.74,3.146 0.5,0.24 1.292,1.5 1.458,1.5 1.458,1.5 1.698,0.969 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 1.5,2.375 1.813,2.531 0.313,0.156 10 false *3 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 0.792,0.833 1.146,1.073 0.354,0.24 10 false W23 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 C 0.719,2.125 1.031,2.281 0.313,0.156 10 false D 2.365,2.948 2.677,3.104 0.313,0.156 10 false W5 2.563,1.427 3.125,1.688 0.563,0.26 10 false BER+ 0.917,1.406 1.479,1.667 0.563,0.26 10 false BER- 0.99,2.927 1.552,3.188 0.563,0.26 10 false BER- 0.542,3.333 1.104,3.594 0.563,0.26 10 false BER+ 2.375,4.26 2.688,4.417 0.313,0.156 10 false *4
*1 Rear Floor Side Airbag Sensor
*2 No. 1 Side Airbag Sensor RH
*3 No. 2 Floor Wire
*4 Service Wire
*a Front view of wire harness connector
(to Rear Floor Side Airbag Sensor)
*b Front view of wire harness connector
(to No. 1 Side Airbag Sensor RH)


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
W23-2 (BER+) - Body ground Engine switch on (IG) Below 1 V
W23-1 (BER-) - 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 (BER+) and 2 (BER-) 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
W23-2 (BER+) - W23-1 (BER-) 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
W23-2 (BER+) - W23-1 (BER-) Always 1 MΩ or higher
W23-2 (BER+) - Body ground Always 1 MΩ or higher
W23-1 (BER-) - Body ground Always 1 MΩ or higher



Result:
Proceed to
OK
NG



OK

4.CHECK NO. 1 SIDE AIRBAG SENSOR RH

NG

REPLACE NO. 2 FLOOR WIRE

4.CHECK NO. 1 SIDE AIRBAG SENSOR RH
a.
C374693C34
0.969,1.583 1.24,1.781 0.271,0.198 10 false *1 2.49,1.396 2.76,1.594 0.271,0.198 10 false *2
*1 No. 1 Side Airbag Sensor LH
*2 Airbag Sensor Assembly


Connect the connector to the rear floor side airbag sensor.


b.

Interchange the No. 1 side airbag sensor RH with LH 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 B1676 or B1677 is output
DTC B1676 or B1677 is not output


HINT:

Codes other than DTC B1676 and B1677 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. 1 side airbag sensor LH and RH to their original positions and connect the connectors to them.



DTC B1676 or B1677 is output

5.REPLACE REAR FLOOR SIDE AIRBAG SENSOR

DTC B1676 or B1677 is not output

REPLACE NO. 1 SIDE AIRBAG SENSOR RH

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


5.REPLACE REAR FLOOR SIDE 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 rear floor side airbag sensor.

Click hereVehicle Interior>SUPPLEMENTAL RESTRAINT SYSTEMS>REAR FLOOR AIRBAG SENSOR>REMOVAL

HINT:

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



Result:
Proceed to
NEXT



NEXT

6.CHECK DTC
6.CHECK DTC
a.
B529883C11
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 Rear Floor Side Airbag Sensor
*2 No. 1 Side Airbag Sensor RH


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 B1676 or B1677 is not output
DTC B1676 or B1677 is output


HINT:

Codes other than DTC B1676 or B1677 may be output at this time, but they are not related to this check.




DTC B1676 or B1677 is not output

END (REAR FLOOR SIDE AIRBAG SENSOR WAS DEFECTIVE)

DTC B1676 or B1677 is output

REPLACE AIRBAG SENSOR ASSEMBLY

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