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DTC    B1622/81    Lost communication with Side Airbag Sensor RH

DTC    B1623/81    Side Airbag Sensor Assembly RH Initialization Incomplete

DTC    B1632/81    Lost Communication with Rear Airbag Sensor RH

DTC    B1633/81    Rear Airbag Sensor Assembly RH Initialization Incomplete

DTC    B1642/81    Lost Communication with Side Satellite Sensor Bus RH

DTC    B1643/81    Side Satellite Sensor Bus RH Initialization Incomplete

for Preparation Click here


DESCRIPTION

The side collision sensor RH circuit (to determine deployment of the front seat side airbag assembly RH and curtain shield airbag assembly RH) is composed of the center airbag sensor assembly, side airbag sensor RH and rear airbag sensor RH.
The side airbag sensor RH and rear airbag sensor RH detect impacts to the vehicle and send signals to the center airbag sensor assembly to determine if the airbag should be deployed.
These DTCs are stored when a malfunction is detected for the side collision sensor RH circuit (to determine deployment of the front seat side airbag assembly RH and curtain shield airbag assembly RH).

DTC No.
DTC Detection Condition
Trouble Area
B1622/81
B1623/81
B1632/81
B1633/81
B1642/81
B1643/81
  1. The center airbag sensor assembly receives a line short circuit signal, an open circuit signal, a short circuit to ground signal or a short circuit to B+ signal in the side collision sensor RH circuit (to determine deployment of the front seat side airbag assembly RH and curtain shield airbag assembly RH).
  2. Side airbag sensor RH malfunction
  3. Rear airbag sensor RH malfunction
  4. Center airbag sensor assembly malfunction
  1. No. 2 floor wire
  2. Side airbag sensor RH
  3. Rear airbag sensor RH
  4. Center airbag sensor assembly

WIRING DIAGRAM


C165789E25


INSPECTION PROCEDURE

1.CHECK PRESENT DTC

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

  1. Check for present DTCs (Click here).

    Result:
    Result
    		Proceed to
    Present DTC B1623 or B1643 is output.
    		A
    Present DTC B1642 or 81 is output.
    		B
    Present DTC B1632 or B1633 is output.
    		C
    Present DTC B1622 is output.
    		D
    Present DTC B1622, B1623, B1632, B1633, B1642, B1643 or 81 is not output.
    		E

    HINT:
    1. DTCs indicating communication errors will be changed to DTCs indicating errors in initialization by turning the power switch off and then on (IG) again.
    2. Codes other than DTCs B1622, B1623, B1632, B1633, B1642, B1643 and 81 may be output at this time, but they are not related to this check.



B
Go to step 3

C
Go to step 14

D
Go to step 21

E
USE SIMULATION METHOD TO CHECK (Click here)
A


2.CHECK HISTORY DTC

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

  1. Check for history DTCs (Click here).

    Result:
    Result
    		Proceed to
    History DTC B1622 or B1632 is not output.
    		A
    History DTC B1632 is output.
    		B
    History DTC B1622 is output.
    		C

    HINT:
    Codes other than history DTCs B1622 and B1632 may be output at this time, but they are not related to this check.



B
Go to step 14

C
Go to step 21
A


3.CHECK CONNECTORS

  1. Turn the power switch off.

  1. Disconnect the cable from the negative (-) battery terminal.

    CAUTION:
    Wait at least 90 seconds after disconnecting the cable from the negative (-) battery terminal to disable the SRS system.

  1. Check that the connectors are properly connected to the center airbag sensor assembly, side airbag sensor RH and rear airbag sensor RH.

    OK:
    The connectors are properly connected.

    HINT:
    If the connectors are not connected securely, reconnect the connectors and proceed to the next inspection.

  1. Disconnect the connectors from the center airbag sensor assembly, side airbag sensor RH and rear airbag sensor RH.

  1. Check that the terminals of connectors are not damaged.

    OK:
    The terminals are not deformed or damaged.



NG
REPLACE NO. 2 FLOOR WIRE
OK


4.CHECK NO. 2 FLOOR WIRE (OPEN)


  1. Using SST, connect terminals 8 (BBR+) and 11 (BBR-) of connector B.


    C171142E03

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

SST
09843-18040  

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

    Standard Resistance:
    Tester Connection
    		Condition
    		Specified Condition
    S8-4 (BBR+) - S8-3 (BBR-)
    		Always
    		Below 1 Ω


    Text in Illustration 
    *1
    		Side Airbag Sensor RH
    		*2
    		Center Airbag Sensor Assembly
    *3
    		No. 2 Floor Wire
    		*4
    		Front view of wire harness connector
    (to Center Airbag Sensor Assembly)
    *5
    		Front view of wire harness connector
    (to Side Airbag Sensor RH)
    		*6
    		Connector B
    *7
    		Connector C
    		-
    		-



NG
REPLACE NO. 2 FLOOR WIRE
OK


5.CHECK NO. 2 FLOOR WIRE (SHORT)


    C145456E14

  1. Disconnect SST from connector B.

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

    Standard Resistance:
    Tester Connection
    		Condition
    		Specified Condition
    S8-4 (BBR+) - S8-3 (BBR-)
    		Always
    		1 MΩ or higher

    Text in Illustration 
    *1
    		Side Airbag Sensor RH
    *2
    		Center Airbag Sensor Assembly
    *3
    		No. 2 Floor Wire
    *4
    		Front view of wire harness connector
    (to Side Airbag Sensor RH)
    *5
    		Connector C



NG
REPLACE NO. 2 FLOOR WIRE
OK


6.CHECK NO. 2 FLOOR WIRE (SHORT TO B+)


    C145456E14

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

  1. Turn the power switch on (IG).

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

    Standard Voltage:
    Tester Connection
    		Switch Condition
    		Specified Condition
    S8-4 (BBR+) - Body ground
    		Power switch on (IG)
    		Below 1 V
    S8-3 (BBR-) - Body ground
    		Power switch on (IG)
    		Below 1 V

    Text in Illustration 
    *1
    		Side Airbag Sensor RH
    *2
    		Center Airbag Sensor Assembly
    *3
    		No. 2 Floor Wire
    *4
    		Front view of wire harness connector
    (to Side Airbag Sensor RH)
    *5
    		Connector C



NG
REPLACE NO. 2 FLOOR WIRE
OK


7.CHECK NO. 2 FLOOR WIRE (SHORT TO GROUND)


    C145456E14

  1. Turn the power switch off.

  1. Disconnect the cable from the negative (-) battery terminal.

    CAUTION:
    Wait at least 90 seconds after disconnecting the cable from the negative (-) battery terminal to disable the SRS system.

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

    Standard Resistance:
    Tester Connection
    		Condition
    		Specified Condition
    S8-4 (BBR+) - Body ground
    		Always
    		1 MΩ or higher
    S8-3 (BBR-) - Body ground
    		Always
    		1 MΩ or higher

    Text in Illustration 
    *1
    		Side Airbag Sensor RH
    *2
    		Center Airbag Sensor Assembly
    *3
    		No. 2 Floor Wire
    *4
    		Front view of wire harness connector
    (to Side Airbag Sensor RH)
    *5
    		Connector C



NG
REPLACE NO. 2 FLOOR WIRE
OK


8.CHECK NO. 2 FLOOR WIRE (OPEN)


  1. Using SST, connect terminals 2 (BCR+) and 1 (BCR-) of connector C.


    C210777E01

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

SST
09843-18040  

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

    Standard Resistance:
    Tester Connection
    		Condition
    		Specified Condition
    S8-1 (BCR+) - S8-2 (BCR-)
    		Always
    		Below 1 Ω


    Text in Illustration 
    *1
    		Rear Airbag Sensor RH
    		*2
    		Side Airbag Sensor RH
    *3
    		No. 2 Floor Wire
    		*4
    		Front view of wire harness connector
    (to Side Airbag Sensor RH)
    *5
    		Front view of wire harness connector
    (to Rear Airbag Sensor RH)
    		*6
    		Connector B
    *7
    		Connector C
    		-
    		-



NG
REPLACE NO. 2 FLOOR WIRE
OK


9.CHECK NO. 2 FLOOR WIRE (SHORT)


    C145445E24

  1. Disconnect SST from connector C.

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

    Standard Resistance:
    Tester Connection
    		Condition
    		Specified Condition
    S8-1 (BCR+) - S8-2 (BCR-)
    		Always
    		1 MΩ or higher

    Text in Illustration 
    *1
    		Rear Airbag Sensor RH
    *2
    		Side Airbag Sensor RH
    *3
    		No. 2 Floor Wire
    *4
    		Front view of wire harness connector
    (to Side Airbag Sensor RH)
    *5
    		Connector B



NG
REPLACE NO. 2 FLOOR WIRE
OK


10.CHECK NO. 2 FLOOR WIRE (SHORT TO B+)


    C145445E24

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

  1. Turn the power switch on (IG).

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

    Standard Voltage:
    Tester Connection
    		Switch Condition
    		Specified Condition
    S8-1 (BCR+) - Body ground
    		Power switch on (IG)
    		Below 1 V
    S8-2 (BCR-) - Body ground
    		Power switch on (IG)
    		Below 1 V

    Text in Illustration 
    *1
    		Rear Airbag Sensor RH
    *2
    		Side Airbag Sensor RH
    *3
    		No. 2 Floor Wire
    *4
    		Front view of wire harness connector
    (to Side Airbag Sensor RH)
    *5
    		Connector B



NG
REPLACE NO. 2 FLOOR WIRE
OK


11.CHECK NO. 2 FLOOR WIRE (SHORT TO GROUND)


    C145445E24

  1. Turn the power switch off.

  1. Disconnect the cable from the negative (-) battery terminal.

    CAUTION:
    Wait at least 90 seconds after disconnecting the cable from the negative (-) battery terminal to disable the SRS system.

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

    Standard Resistance:
    Tester Connection
    		Condition
    		Specified Condition
    S8-1 (BCR+) - Body ground
    		Always
    		1 MΩ or higher
    S8-2 (BCR-) - Body ground
    		Always
    		1 MΩ or higher

    Text in Illustration 
    *1
    		Rear Airbag Sensor RH
    *2
    		Side Airbag Sensor RH
    *3
    		No. 2 Floor Wire
    *4
    		Front view of wire harness connector
    (to Side Airbag Sensor RH)
    *5
    		Connector B



NG
REPLACE NO. 2 FLOOR WIRE
OK


12.CHECK SIDE AIRBAG SENSOR RH


    C166177E08

  1. Connect the connectors to the rear airbag sensor RH and center airbag sensor assembly.

  1. Interchange the side airbag sensor LH with RH and connect the connectors to them.

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

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

  1. Clear the DTCs stored in the memory (Click here).

  1. Turn the power switch off.

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

  1. Check for DTCs (Click here).

    Result:
    Result
    		Proceed to
    DTC B1623, B1642, B1643, or 81 is output.
    		A
    DTC B1628, B1647, B1648, or 82 is output.
    		B
    DTCs B1623, B1642, B1643, or 81 and B1628, B1647, B1648, or 82 are not output.
    		C

    Text in Illustration 
    *1
    		Side Airbag Sensor LH
    *2
    		Center Airbag Sensor Assembly

    HINT:
    Codes other than DTCs B1623, B1642, B1643 or 81 and B1628, B1647, B1648 or 82 may be output at this time, but they are not related to this check.



B
REPLACE SIDE AIRBAG SENSOR RH (Click here)

C
USE SIMULATION METHOD TO CHECK (Click here)
A


13.CHECK REAR AIRBAG SENSOR RH


    C166174E16

  1. Turn the power switch off.

  1. Disconnect the cable from the negative (-) battery terminal.

    CAUTION:
    Wait at least 90 seconds after disconnecting the cable from the negative (-) battery terminal to disable the SRS system.

  1. Return the side airbag sensor LH and RH to their original positions and connect the connectors to them.

  1. Interchange the rear airbag sensor LH with RH and connect the connectors to them.

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

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

  1. Clear the DTCs stored in the memory (Click here).

  1. Turn the power switch off.

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

  1. Check for DTCs (Click here).

    Result:
    Result
    		Proceed to
    DTCs B1623, B1642, B1643, or 81 and B1628, B1647, B1648, or 82 are not output.
    		A
    DTC B1623, B1642, B1643, or 81 is output.
    		B
    DTC B1628, B1647, B1648, or 82 is output.
    		C

    Text in Illustration 
    *1
    		Rear Airbag Sensor LH
    *2
    		Side Airbag Sensor RH

    HINT:
    Codes other than DTCs B1623, B1642, B1643 or 81 and B1628, B1647, B1648 or 82 may be output at this time, but they are not related to this check.



B
REPLACE CENTER AIRBAG SENSOR ASSEMBLY (Click here)

C
REPLACE REAR AIRBAG SENSOR RH (Click here)
A

USE SIMULATION METHOD TO CHECK (Click here)  

14.CHECK CONNECTORS

  1. Turn the power switch off.

  1. Disconnect the cable from the negative (-) battery terminal.

    CAUTION:
    Wait at least 90 seconds after disconnecting the cable from the negative (-) battery terminal to disable the SRS system.

  1. Check that the connectors are properly connected to the side airbag sensor RH and rear airbag sensor RH.

    OK:
    The connectors are properly connected.

    HINT:
    If the connectors are not connected securely, reconnect the connectors and proceed to the next inspection.

  1. Disconnect the connectors from the side airbag sensor RH and rear airbag sensor RH.

  1. Check that the terminals of connectors are not damaged.

    OK:
    The terminals are not deformed or damaged.



NG
REPLACE NO. 2 FLOOR WIRE
OK


15.CHECK NO. 2 FLOOR WIRE (OPEN)


  1. Using SST, connect terminals 2 (BCR+) and 1 (BCR-) of connector C.


    C210777E01

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

SST
09843-18040  

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

    Standard Resistance:
    Tester Connection
    		Condition
    		Specified Condition
    S8-1 (BCR+) - S8-2 (BCR-)
    		Always
    		Below 1 Ω


    Text in Illustration 
    *1
    		Rear Airbag Sensor RH
    		*2
    		Side Airbag Sensor RH
    *3
    		No. 2 Floor Wire
    		*4
    		Front view of wire harness connector
    (to Side Airbag Sensor RH)
    *5
    		Front view of wire harness connector
    (to Rear Airbag Sensor RH)
    		*6
    		Connector B
    *7
    		Connector C
    		-
    		-



NG
REPLACE NO. 2 FLOOR WIRE
OK


16.CHECK NO. 2 FLOOR WIRE (SHORT)


    C145445E24

  1. Disconnect SST from connector C.

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

    Standard Resistance:
    Tester Connection
    		Condition
    		Specified Condition
    S8-1 (BCR+) - S8-2 (BCR-)
    		Always
    		1 MΩ or higher

    Text in Illustration 
    *1
    		Rear Airbag Sensor RH
    *2
    		Side Airbag Sensor RH
    *3
    		No. 2 Floor Wire
    *4
    		Front view of wire harness connector
    (to Side Airbag Sensor RH)
    *5
    		Connector B



NG
REPLACE NO. 2 FLOOR WIRE
OK


17.CHECK NO. 2 FLOOR WIRE (SHORT TO B+)


    C145445E24

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

  1. Turn the power switch on (IG).

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

    Standard Voltage:
    Tester Connection
    		Switch Condition
    		Specified Condition
    S8-1 (BCR+) - Body ground
    		Power switch on (IG)
    		Below 1 V
    S8-2 (BCR-) - Body ground
    		Power switch on (IG)
    		Below 1 V

    Text in Illustration 
    *1
    		Rear Airbag Sensor RH
    *2
    		Side Airbag Sensor RH
    *3
    		No. 2 Floor Wire
    *4
    		Front view of wire harness connector
    (to Side Airbag Sensor RH)
    *5
    		Connector B



NG
REPLACE NO. 2 FLOOR WIRE
OK


18.CHECK NO. 2 FLOOR WIRE (SHORT TO GROUND)


    C145445E24

  1. Turn the power switch off.

  1. Disconnect the cable from the negative (-) battery terminal.

    CAUTION:
    Wait at least 90 seconds after disconnecting the cable from the negative (-) battery terminal to disable the SRS system.

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

    Standard Resistance:
    Tester Connection
    		Condition
    		Specified Condition
    S8-1 (BCR+) - Body ground
    		Always
    		1 MΩ or higher
    S8-2 (BCR-) - Body ground
    		Always
    		1 MΩ or higher

    Text in Illustration 
    *1
    		Rear Airbag Sensor RH
    *2
    		Side Airbag Sensor RH
    *3
    		No. 2 Floor Wire
    *4
    		Front view of wire harness connector
    (to Side Airbag Sensor RH)
    *5
    		Connector B



NG
REPLACE NO. 2 FLOOR WIRE
OK


19.CHECK SIDE AIRBAG SENSOR RH


    C166177E08

  1. Connect the connector to the rear airbag sensor RH.

  1. Interchange the side airbag sensor LH with RH and connect the connectors to them.

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

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

  1. Clear the DTCs stored in the memory (Click here).

  1. Turn the power switch off.

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

  1. Check for DTCs (Click here).

    Result:
    Result
    		Proceed to
    DTC B1632 or B1633 is output.
    		A
    DTC B1637 or B1638 is output.
    		B
    DTCs B1632 or B1633 and B1637 or B1638 are not output.
    		C

    Text in Illustration 
    *1
    		Side Airbag Sensor LH
    *2
    		Center Airbag Sensor Assembly

    HINT:
    Codes other than DTCs B1632, B1633, B1637 and B1638 may be output at this time, but they are not related to this check.



B
REPLACE SIDE AIRBAG SENSOR RH (Click here)

C
USE SIMULATION METHOD TO CHECK (Click here)
A


20.CHECK REAR AIRBAG SENSOR RH


    C166174E16

  1. Turn the power switch off.

  1. Disconnect the cable from the negative (-) battery terminal.

    CAUTION:
    Wait at least 90 seconds after disconnecting the cable from the negative (-) battery terminal to disable the SRS system.

  1. Return the side airbag sensor LH and RH to their original positions and connect the connectors to them.

  1. Interchange the rear airbag sensor LH with RH and connect the connectors.

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

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

  1. Clear the DTCs stored in the memory (Click here).

  1. Turn the power switch off.

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

  1. Check for DTCs (Click here).

    Result:
    Result
    		Proceed to
    DTCs B1632 or B1633 and B1637 or B1638 are not output.
    		A
    DTC B1632 or B1633 is output.
    		B
    DTC B1637 or B1638 is output.
    		C

    Text in Illustration 
    *1
    		Rear Airbag Sensor LH
    *2
    		Side Airbag Sensor RH

    HINT:
    Codes other than DTCs B1632, B1633, B1637 and B1638 may be output at this time, but they are not related to this check.



B
REPLACE CENTER AIRBAG SENSOR ASSEMBLY (Click here)

C
REPLACE REAR AIRBAG SENSOR RH (Click here)
A

USE SIMULATION METHOD TO CHECK (Click here)  

21.CHECK SIDE AIRBAG SENSOR RH


    C166177E08

  1. Turn the power switch off.

  1. Disconnect the cable from the negative (-) battery terminal.

    CAUTION:
    Wait at least 90 seconds after disconnecting the cable from the negative (-) battery terminal to disable the SRS system.

  1. Interchange the side airbag sensor LH with RH and connect the connectors to them.

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

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

  1. Clear the DTCs stored in the memory (Click here).

  1. Turn the power switch off.

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

  1. Check for DTCs (Click here).

    Result:
    Result
    		Proceed to
    DTCs B1622 and B1627 are not output.
    		A
    DTC B1622 is output.
    		B
    DTC B1627 is output.
    		C

    Text in Illustration 
    *1
    		Side Airbag Sensor LH
    *2
    		Center Airbag Sensor Assembly

    HINT:
    Codes other than DTCs B1622 and B1627 may be output at this time, but they are not related to this check.



B
REPLACE CENTER AIRBAG SENSOR ASSEMBLY (Click here)

C
REPLACE SIDE AIRBAG SENSOR RH (Click here)
A

USE SIMULATION METHOD TO CHECK (Click here)