Dtc B1623/81 Side Airbag Sensor Assembly Rh Initialization Incomplete

Vehicle Interior. Yaris. Ncp93, 131
Supplemental Restraint Systems. Yaris. Ncp93, 131

DESCRIPTION

WIRING DIAGRAM

INSPECTION PROCEDURE

CHECK HISTORY DTC

CHECK CONNECTORS

CHECK FLOOR WIRE (OPEN)

CHECK FLOOR WIRE (SHORT)

CHECK FLOOR WIRE (SHORT TO B+)

CHECK FLOOR WIRE (SHORT TO GROUND)

CHECK FLOOR WIRE (OPEN)

CHECK FLOOR WIRE (SHORT)

CHECK FLOOR WIRE (SHORT TO B+)

CHECK FLOOR WIRE (SHORT TO GROUND)

CHECK SIDE AIRBAG SENSOR ASSEMBLY RH

CHECK NO. 2 SIDE AIRBAG SENSOR ASSEMBLY RH

DTC B1623/81 Side Airbag Sensor Assembly RH Initialization Incomplete


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 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.
This DTC is 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
B1623/81
  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 side 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. Floor wire
  2. Side airbag sensor assembly RH
  3. No. 2 side airbag sensor assembly RH
  4. Airbag sensor assembly

WIRING DIAGRAM


Yaris. Ncp93, 131.Supplemental Restraint Systems.Airbag System (For Sedan). Dtc B1623/81 Side Airbag Sensor Assembly Rh Initialization Incomplete


INSPECTION PROCEDURE

1.CHECK HISTORY DTC

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

  1. Check for history DTCs (YARIS_NCP93 RM000000XFE0EEX.html).

    Result:
    History DTC B1622/81 is not output.
    HINT:
    Codes other than history DTCs B1622/81 may be output at this time, but they are not related to this check.


NG
INSPECTION PROCEDURE RELEVANT TO OUTPUT DTC (YARIS_NCP93 RM000000XF70AIX.html)
OK


2.CHECK CONNECTORS

  1. Turn the ignition 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 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 connectors are not damaged.

    OK:
    The terminals are not deformed or damaged.


NG
REPLACE FLOOR WIRE
OK


3.CHECK FLOOR WIRE (OPEN)


  1. Using the service wire, connect terminals 17 (BBR+) and 18 (BBR-) of connector B.


    Yaris. Ncp93, 131.Supplemental Restraint Systems.Airbag System (For Sedan). Dtc B1623/81 Side Airbag Sensor Assembly Rh Initialization Incomplete


Text in Illustration
*1
Side Airbag Sensor Assembly RH
*2
Airbag Sensor Assembly
*3
Floor Wire
*4
Connector B
*5
Connector C
*6
Service Wire
*a
Front view of wire harness connector
(to Airbag Sensor Assembly)
*b
Front view of wire harness connector
(to Side Airbag Sensor Assembly RH)
NOTICE:
Do not forcibly insert the service wire into the terminals of the connector when connecting.

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

    Standard Resistance:
    Tester Connection
    		Condition
    		Specified Condition
    J74-4 (BBR+) - J74-3 (BBR-)
    		Always
    		Below 1 Ω


NG
REPLACE FLOOR WIRE
OK


4.CHECK FLOOR WIRE (SHORT)


    Yaris. Ncp93, 131.Supplemental Restraint Systems.Airbag System (For Sedan). Dtc B1623/81 Side Airbag Sensor Assembly Rh Initialization Incomplete

  1. Disconnect the service wire from connector B.

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

    Standard Resistance:
    Tester Connection
    		Condition
    		Specified Condition
    J74-4 (BBR+) - J74-3 (BBR-)
    		Always
    		1 MΩ or higher
    Text in Illustration
    *1
    		Side Airbag Sensor Assembly RH
    *2
    		Airbag Sensor Assembly
    *3
    		Floor Wire
    *4
    		Connector C
    *a
    		Front view of wire harness connector
    (to Side Airbag Sensor Assembly RH)


NG
REPLACE FLOOR WIRE
OK


5.CHECK FLOOR WIRE (SHORT TO B+)


    Yaris. Ncp93, 131.Supplemental Restraint Systems.Airbag System (For Sedan). Dtc B1623/81 Side Airbag Sensor Assembly Rh Initialization Incomplete

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

  1. Turn the ignition switch to ON.

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

    Standard Voltage:
    Tester Connection
    		Switch Condition
    		Specified Condition
    J74-4 (BBR+) - Body ground
    		Ignition switch ON
    		Below 1 V
    J74-3 (BBR-) - Body ground
    		Ignition switch ON
    		Below 1 V
    Text in Illustration
    *1
    		Side Airbag Sensor Assembly RH
    *2
    		Airbag Sensor Assembly
    *3
    		Floor Wire
    *4
    		Connector C
    *a
    		Front view of wire harness connector
    (to Side Airbag Sensor Assembly RH)


NG
REPLACE FLOOR WIRE
OK


6.CHECK FLOOR WIRE (SHORT TO GROUND)


    Yaris. Ncp93, 131.Supplemental Restraint Systems.Airbag System (For Sedan). Dtc B1623/81 Side Airbag Sensor Assembly Rh Initialization Incomplete

  1. Turn the ignition 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
    J74-4 (BBR+) - Body ground
    		Always
    		1 MΩ or higher
    J74-3 (BBR-) - Body ground
    		Always
    		1 MΩ or higher
    Text in Illustration
    *1
    		Side Airbag Sensor Assembly RH
    *2
    		Airbag Sensor Assembly
    *3
    		Floor Wire
    *4
    		Connector C
    *a
    		Front view of wire harness connector
    (to Side Airbag Sensor Assembly RH)


NG
REPLACE FLOOR WIRE
OK


7.CHECK FLOOR WIRE (OPEN)


  1. Using the service wire, connect terminals 4 (BCR+) and 3 (BCR-) of connector C.


    Yaris. Ncp93, 131.Supplemental Restraint Systems.Airbag System (For Sedan). Dtc B1623/81 Side Airbag Sensor Assembly Rh Initialization Incomplete


    Text in Illustration
    *1
    		No. 2 Side Airbag Sensor Assembly RH
    		*2
    		Side Airbag Sensor Assembly RH
    *3
    		Floor Wire
    		*4
    		Connector B
    *5
    		Connector C
    		*6
    		Service Wire
    *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)
    NOTICE:
    Do not forcibly insert the service wire into the terminals of the connector when connecting.

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

    Standard Resistance:
    Tester Connection
    		Condition
    		Specified Condition
    J74-1 (BCR+) - J74-2 (BCR-)
    		Always
    		Below 1 Ω


NG
REPLACE FLOOR WIRE
OK


8.CHECK FLOOR WIRE (SHORT)


    Yaris. Ncp93, 131.Supplemental Restraint Systems.Airbag System (For Sedan). Dtc B1623/81 Side Airbag Sensor Assembly Rh Initialization Incomplete

  1. Disconnect the service wire from connector C.

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

    Standard Resistance:
    Tester Connection
    		Condition
    		Specified Condition
    J74-1 (BCR+) - J74-2 (BCR-)
    		Always
    		1 MΩ or higher
    Text in Illustration
    *1
    		No. 2 Side Airbag Sensor Assembly RH
    *2
    		Side Airbag Sensor Assembly RH
    *3
    		Floor Wire
    *4
    		Connector B
    *a
    		Front view of wire harness connector
    (to Side Airbag Sensor Assembly RH)


NG
REPLACE FLOOR WIRE
OK


9.CHECK FLOOR WIRE (SHORT TO B+)


    Yaris. Ncp93, 131.Supplemental Restraint Systems.Airbag System (For Sedan). Dtc B1623/81 Side Airbag Sensor Assembly Rh Initialization Incomplete

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

  1. Turn the ignition switch to ON.

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

    Standard Voltage:
    Tester Connection
    		Switch Condition
    		Specified Condition
    J74-1 (BCR+) - Body ground
    		Ignition switch ON
    		Below 1 V
    J74-2 (BCR-) - Body ground
    		Ignition switch ON
    		Below 1 V
    Text in Illustration
    *1
    		No. 2 Side Airbag Sensor Assembly RH
    *2
    		Side Airbag Sensor Assembly RH
    *3
    		Floor Wire
    *4
    		Connector B
    *a
    		Front view of wire harness connector
    (to Side Airbag Sensor Assembly RH)


NG
REPLACE FLOOR WIRE
OK


10.CHECK FLOOR WIRE (SHORT TO GROUND)


    Yaris. Ncp93, 131.Supplemental Restraint Systems.Airbag System (For Sedan). Dtc B1623/81 Side Airbag Sensor Assembly Rh Initialization Incomplete

  1. Turn the ignition 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
    J74-1 (BCR+) - Body ground
    		Always
    		1 MΩ or higher
    J74-2 (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
    		Floor Wire
    *4
    		Connector B
    *a
    		Front view of wire harness connector
    (to Side Airbag Sensor Assembly RH)


NG
REPLACE FLOOR WIRE
OK


11.CHECK SIDE AIRBAG SENSOR ASSEMBLY RH


    Yaris. Ncp93, 131.Supplemental Restraint Systems.Airbag System (For Sedan). Dtc B1623/81 Side Airbag Sensor Assembly Rh Initialization Incomplete

  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 the side airbag sensor assembly LH and connect the connectors to them.

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

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

  1. Clear the DTCs stored in the memory (YARIS_NCP93 RM000000XFE0EEX.html).

  1. Turn the ignition switch off.

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

  1. Check for DTCs (YARIS_NCP93 RM000000XFE0EEX.html).

    Result
    Result
    		Proceed to
    DTC B1623/81 is output.
    		A
    DTC B1628/82 is output.
    (for 5 Door)
    		B
    DTC B1628/82 is output.
    (for 3 Door)
    		C
    DTC B1623/81 or B1628/82 is not output.
    		D
    Text in Illustration
    *1
    		Side Airbag Sensor Assembly LH
    *2
    		Airbag Sensor Assembly
    HINT:
    Codes other than DTCs B1623/81 and B1628/82 may be output at this time, but they are not related to this check.

  1. Turn the ignition switch off.

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



B
REPLACE SIDE AIRBAG SENSOR ASSEMBLY RH (YARIS_NCP93 RM000003QZ000BX.html)

C
REPLACE SIDE AIRBAG SENSOR ASSEMBLY RH (YARIS_NCP93 RM0000029C6018X.html)

D
USE SIMULATION METHOD TO CHECK (YARIS_NCP93 RM00000135202EX.html)
A


12.CHECK NO. 2 SIDE AIRBAG SENSOR ASSEMBLY RH


    Yaris. Ncp93, 131.Supplemental Restraint Systems.Airbag System (For Sedan). Dtc B1623/81 Side Airbag Sensor Assembly Rh Initialization Incomplete

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

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

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

  1. Clear the DTCs stored in the memory (YARIS_NCP93 RM000000XFE0EEX.html).

  1. Turn the ignition switch off.

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

  1. Check for DTCs (YARIS_NCP93 RM000000XFE0EEX.html).

    Result
    Result
    		Proceed to
    DTC B1623/81 or B1628/82 is not output.
    		A
    DTC B1623/81 is output.
    		B
    DTC B1628/82 is output.
    (for 5 Door)
    		C
    DTC B1628/82 is output.
    (for 3 Door)
    		D
    Text in Illustration
    *1
    		No. 2 Side Airbag Sensor Assembly LH
    *2
    		Side Airbag Sensor Assembly RH
    HINT:
    Codes other than DTCs B1623/81 and B1628/82 may be output at this time, but they are not related to this check.

  1. Turn the ignition 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 No. 2 side airbag sensor assembly RH and the No. 2 side airbag sensor assembly LH to their original positions and connect the connectors to them.



B
REPLACE AIRBAG SENSOR ASSEMBLY (YARIS_NCP93 RM000000V6U02AX.html)

C
REPLACE NO. 2 SIDE AIRBAG SENSOR ASSEMBLY RH (YARIS_NCP93 RM000001IBD02AX.html)

D
REPLACE NO. 2 SIDE AIRBAG SENSOR ASSEMBLY RH (YARIS_NCP93 RM000001IBD02BX.html)
A

USE SIMULATION METHOD TO CHECK (YARIS_NCP93 RM00000135202EX.html)