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

for Preparation Click here


DESCRIPTION

The side collision sensor RH circuit (to determine deployment of the front seat airbag assembly RH and curtain shield airbag assembly RH) is composed of the airbag sensor assembly, side airbag sensor assembly RH and No. 2 side airbag sensor assembly RH.
The side airbag sensor assembly RH and No. 2 side airbag sensor assembly RH detect impacts to the vehicle and send signals to the 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 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
  1. The 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 airbag assembly RH and curtain shield airbag assembly RH).
  2. Side airbag sensor assembly RH malfunction
  3. No. 2 side airbag sensor assembly RH malfunction
  4. Airbag sensor assembly malfunction
  1. No. 2 floor wire
  2. Side airbag sensor assembly RH
  3. No. 2 side airbag sensor assembly RH
  4. Airbag sensor assembly

WIRING DIAGRAM


C165789E44


INSPECTION PROCEDURE

NOTICE:
After turning the power switch off, waiting time may be required before disconnecting the cable from the negative (-) auxiliary battery terminal. Therefore, make sure to read the disconnecting the cable from the negative (-) auxiliary battery terminal notices before proceeding with work (Click here).

1.CHECK CURRENT DTC

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

  1. Check for current DTCs (Click here).

    Result:
    Result
    		Proceed to
    Current DTC B1623 is output.
    		A
    Current DTC B1642 or 81 is output.
    		B
    Current DTC B1632 or B1633 is output.
    		C
    Current DTC B1622 is output.
    		D
    Current DTCs B1622, B1623, B1632, B1633, B1642 and 81 are 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 current DTCs B1622, B1623, B1632, B1633, B1642 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 is not output.
    		A
    History DTC B1622 is output.
    		B

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



B
Go to step 14
A


3.CHECK CONNECTORS

  1. Turn the power switch off.

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

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

  1. Check that the connectors are properly connected to the airbag sensor assembly, side airbag sensor assembly RH and No. 2 side airbag sensor assembly 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 airbag sensor assembly, side airbag sensor assembly RH and No. 2 side airbag sensor assembly RH.

  1. Check that the terminals of the 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.


    C203033E14

    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
    Q5-4 (BBR+) - Q5-3 (BBR-)
    		Always
    		Below 1 Ω


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



NG
REPLACE NO. 2 FLOOR WIRE
OK


5.CHECK NO. 2 FLOOR WIRE (SHORT)


    C203032E14

  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
    Q5-4 (BBR+) - Q5-3 (BBR-)
    		Always
    		1 MΩ or higher

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



NG
REPLACE NO. 2 FLOOR WIRE
OK


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


    C203032E14

  1. Connect the cable to the negative (-) auxiliary 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
    Q5-4 (BBR+) - Body ground
    		Power switch on (IG)
    		Below 1 V
    Q5-3 (BBR-) - Body ground
    		Power switch on (IG)
    		Below 1 V

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



NG
REPLACE NO. 2 FLOOR WIRE
OK


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


    C203032E14

  1. Turn the power switch off.

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

    CAUTION:
    Wait at least 90 seconds after disconnecting the cable from the negative (-) auxiliary 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
    Q5-4 (BBR+) - Body ground
    		Always
    		1 MΩ or higher
    Q5-3 (BBR-) - Body ground
    		Always
    		1 MΩ or higher

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



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.


    C213490E11

    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
    Q5-1 (BCR+) - Q5-2 (BCR-)
    		Always
    		Below 1 Ω


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



NG
REPLACE NO. 2 FLOOR WIRE
OK


9.CHECK NO. 2 FLOOR WIRE (SHORT)


    C213489E11

  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
    Q5-1 (BCR+) - Q5-2 (BCR-)
    		Always
    		1 MΩ or higher

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



NG
REPLACE NO. 2 FLOOR WIRE
OK


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


    C213489E11

  1. Connect the cable to the negative (-) auxiliary 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
    Q5-1 (BCR+) - Body ground
    		Power switch on (IG)
    		Below 1 V
    Q5-2 (BCR-) - Body ground
    		Power switch on (IG)
    		Below 1 V

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



NG
REPLACE NO. 2 FLOOR WIRE
OK


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


    C213489E11

  1. Turn the power switch off.

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

    CAUTION:
    Wait at least 90 seconds after disconnecting the cable from the negative (-) auxiliary 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
    Q5-1 (BCR+) - Body ground
    		Always
    		1 MΩ or higher
    Q5-2 (BCR-) - Body ground
    		Always
    		1 MΩ or higher

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



NG
REPLACE NO. 2 FLOOR WIRE
OK


12.CHECK SIDE AIRBAG SENSOR ASSEMBLY RH


    C166177E08

  1. Connect the connectors to the No. 2 side airbag sensor assembly RH and airbag sensor assembly.

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

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

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

  1. Clear the DTCs stored in 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 or 81 is output.
    		A
    DTC B1628, B1647 or 82 is output.
    		B
    DTCs B1623, B1628, B1642, B1647, 81 and 82 are not output.
    		C

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

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



B
REPLACE SIDE AIRBAG SENSOR ASSEMBLY RH (Click here)

C
USE SIMULATION METHOD TO CHECK (Click here)
A


13.CHECK NO. 2 SIDE AIRBAG SENSOR ASSEMBLY RH


    C166174E16

  1. Turn the power switch off.

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

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

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

  1. Interchange the No. 2 side airbag sensor assembly RH with LH and connect the connectors.

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

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

  1. Clear the DTCs stored in 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, B1628, B1642, B1647, 81 and 82 are not output.
    		A
    DTC B1623, B1642 or 81 is output.
    		B
    DTC B1628, B1647 or 82 is output.
    		C

    Text in Illustration 
    *1
    		No. 2 Side Airbag Sensor Assembly LH
    *2
    		Side Airbag Sensor Assembly RH

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



B
REPLACE AIRBAG SENSOR ASSEMBLY (Click here)

C
REPLACE NO. 2 SIDE AIRBAG SENSOR ASSEMBLY 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 (-) auxiliary battery terminal.

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

  1. Check that the connectors are properly connected to the side airbag sensor assembly RH and No. 2 side airbag sensor assembly 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 assembly RH and No. 2 side airbag sensor assembly RH.

  1. Check that the terminals of the 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.


    C213490E11

    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
    Q5-1 (BCR+) - Q5-2 (BCR-)
    		Always
    		Below 1 Ω


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



NG
REPLACE NO. 2 FLOOR WIRE
OK


16.CHECK NO. 2 FLOOR WIRE (SHORT)


    C213489E11

  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
    Q5-1 (BCR+) - Q5-2 (BCR-)
    		Always
    		1 MΩ or higher

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



NG
REPLACE NO. 2 FLOOR WIRE
OK


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


    C213489E11

  1. Connect the cable to the negative (-) auxiliary 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
    Q5-1 (BCR+) - Body ground
    		Power switch on (IG)
    		Below 1 V
    Q5-2 (BCR-) - Body ground
    		Power switch on (IG)
    		Below 1 V

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



NG
REPLACE NO. 2 FLOOR WIRE
OK


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


    C213489E11

  1. Turn the power switch off.

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

    CAUTION:
    Wait at least 90 seconds after disconnecting the cable from the negative (-) auxiliary 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
    Q5-1 (BCR+) - Body ground
    		Always
    		1 MΩ or higher
    Q5-2 (BCR-) - Body ground
    		Always
    		1 MΩ or higher

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



NG
REPLACE NO. 2 FLOOR WIRE
OK


19.CHECK SIDE AIRBAG SENSOR ASSEMBLY RH


    C166177E08

  1. Connect the connector to the No. 2 side airbag sensor assembly RH.

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

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

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

  1. Clear the DTCs stored in 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, B1633, B1637 and B1638 are not output.
    		C

    Text in Illustration 
    *1
    		Side Airbag Sensor Assembly LH
    *2
    		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 ASSEMBLY RH (Click here)

C
USE SIMULATION METHOD TO CHECK (Click here)
A


20.CHECK NO. 2 SIDE AIRBAG SENSOR ASSEMBLY RH


    C166174E16

  1. Turn the power switch off.

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

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

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

  1. Interchange the No. 2 side airbag sensor assembly RH with LH and connect the connectors.

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

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

  1. Clear the DTCs stored in 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, B1633, B1637 and B1638 are not output.
    		A
    DTC B1632 or B1633 is output.
    		B
    DTC B1637 or B1638 is output.
    		C

    Text in Illustration 
    *1
    		No. 2 Side Airbag Sensor Assembly LH
    *2
    		Side Airbag Sensor Assembly 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 AIRBAG SENSOR ASSEMBLY (Click here)

C
REPLACE NO. 2 SIDE AIRBAG SENSOR ASSEMBLY RH (Click here)
A

USE SIMULATION METHOD TO CHECK (Click here)  

21.CHECK SIDE AIRBAG SENSOR ASSEMBLY RH


    C166177E08

  1. Turn the power switch off.

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

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

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

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

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

  1. Clear the DTCs stored in 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 Assembly LH
    *2
    		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 AIRBAG SENSOR ASSEMBLY (Click here)

C
REPLACE SIDE AIRBAG SENSOR ASSEMBLY RH (Click here)
A

USE SIMULATION METHOD TO CHECK (Click here)