Dtc B1692/81 Lost Communication With Door Side Airbag Sensor Rh

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

DESCRIPTION

WIRING DIAGRAM

INSPECTION PROCEDURE

CHECK CONNECTORS

CHECK FLOOR WIRE AND FRONT DOOR WIRE RH (OPEN)

CHECK FLOOR WIRE AND FRONT DOOR WIRE RH (SHORT)

CHECK FLOOR WIRE AND FRONT DOOR WIRE RH (SHORT TO B+)

CHECK FLOOR WIRE AND FRONT DOOR WIRE RH (SHORT TO GROUND)

CHECK NO. 2 SIDE AIRBAG SENSOR ASSEMBLY RH

CHECK DOOR SIDE AIRBAG SENSOR RH

CHECK FRONT DOOR WIRE RH (OPEN)

CHECK FRONT DOOR WIRE RH (SHORT)

CHECK FRONT DOOR WIRE RH (SHORT TO B+)

CHECK FRONT DOOR WIRE RH (SHORT TO GROUND)

DTC B1692/81 Lost Communication with Door Side Airbag Sensor RH

DTC B1693/81 Door Side Airbag Sensor RH Initialization Incomplete


DESCRIPTION

The circuit for the side collision sensor RH (to determine deployment of the front seat side airbag RH and curtain shield airbag RH) is composed of the airbag sensor assembly, door side airbag sensor RH and No. 2 side airbag sensor assembly RH.
The door side airbag sensor 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.
DTC B1692/81 and B1693/81 are recorded when a malfunction is detected in the circuit for the side collision sensor RH (to determine deployment of the front seat side airbag RH and curtain shield airbag RH).

DTC No.
DTC Detection Condition
Trouble Area
B1692/81
B1693/81
When one of following conditions is met:
  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 circuit for the side collision sensor RH (to determine deployment of the front seat side airbag RH and curtain shield airbag RH) for 2 seconds.
  2. Door side airbag sensor RH malfunction
  3. No. 2 side airbag sensor assembly RH malfunction
  4. Airbag sensor assembly malfunction
  1. Floor wire
  2. Front door wire RH
  3. Door side airbag sensor RH
  4. No. 2 side airbag sensor assembly RH
  5. Airbag sensor assembly

WIRING DIAGRAM


Yaris. Ncp93, 131.Supplemental Restraint Systems.Airbag System (For Sedan). Dtc B1692/81 Lost Communication With Door Side Airbag Sensor Rh


INSPECTION PROCEDURE

1.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, door side airbag sensor 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, door side airbag sensor 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 WIRE HARNESS
OK


2.CHECK FLOOR WIRE AND FRONT DOOR WIRE RH (OPEN)


  1. Using the service wire, connect terminals 2 (BDR+) and 1 (BDR-) of connector E.


    Yaris. Ncp93, 131.Supplemental Restraint Systems.Airbag System (For Sedan). Dtc B1692/81 Lost Communication With Door Side Airbag Sensor Rh


    Text in Illustration
    *1
    		Door Side Airbag Sensor RH
    		*2
    		No. 2 Side Airbag Sensor Assembly RH
    *3
    		Front Door Wire RH
    		*4
    		Floor Wire
    *5
    		Connector B
    		*6
    		Connector E
    *7
    		Service Wire
    		-
    		-
    *a
    		Front view of wire harness connector
    (to No. 2 Side Airbag Sensor Assembly RH)
    		*b
    		Front view of wire harness connector
    (to Door Side Airbag Sensor 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
    J76-1 (BDR+) - J76-2 (BDR-)
    		Always
    		Below 1 Ω


NG
Go to step 8
OK


3.CHECK FLOOR WIRE AND FRONT DOOR WIRE RH (SHORT)


    Yaris. Ncp93, 131.Supplemental Restraint Systems.Airbag System (For Sedan). Dtc B1692/81 Lost Communication With Door Side Airbag Sensor Rh

  1. Disconnect the service wire from connector E.

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

    Standard Resistance:
    Tester Connection
    		Condition
    		Specified Condition
    J76-1 (BDR+) - J76-2 (BDR-)
    		Always
    		1 MΩ or higher
    Text in Illustration
    *1
    		Door Side Airbag Sensor RH
    *2
    		No. 2 Side Airbag Sensor Assembly RH
    *3
    		Front Door Wire RH
    *4
    		Floor Wire
    *5
    		Connector B
    *a
    		Front view of wire harness connector
    (to No. 2 Side Airbag Sensor Assembly RH)


NG
Go to step 9
OK


4.CHECK FLOOR WIRE AND FRONT DOOR WIRE RH (SHORT TO B+)


    Yaris. Ncp93, 131.Supplemental Restraint Systems.Airbag System (For Sedan). Dtc B1692/81 Lost Communication With Door Side Airbag Sensor Rh

  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
    J76-1 (BDR+) - Body ground
    		Ignition switch ON
    		Below 1 V
    J76-2 (BDR-) - Body ground
    		Ignition switch ON
    		Below 1 V
    Text in Illustration
    *1
    		Door Side Airbag Sensor RH
    *2
    		No. 2 Side Airbag Sensor Assembly RH
    *3
    		Front Door Wire RH
    *4
    		Floor Wire
    *5
    		Connector B
    *a
    		Front view of wire harness connector
    (to No. 2 Side Airbag Sensor Assembly RH)


NG
Go to step 10
OK


5.CHECK FLOOR WIRE AND FRONT DOOR WIRE RH (SHORT TO GROUND)


    Yaris. Ncp93, 131.Supplemental Restraint Systems.Airbag System (For Sedan). Dtc B1692/81 Lost Communication With Door Side Airbag Sensor Rh

  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
    J76-1 (BDR+) - Body ground
    		Always
    		1 MΩ or higher
    J76-2 (BDR-) - Body ground
    		Always
    		1 MΩ or higher
    Text in Illustration
    *1
    		Door Side Airbag Sensor RH
    *2
    		No. 2 Side Airbag Sensor Assembly RH
    *3
    		Front Door Wire RH
    *4
    		Floor Wire
    *5
    		Connector B
    *a
    		Front view of wire harness connector
    (to No. 2 Side Airbag Sensor Assembly RH)


NG
Go to step 11
OK


6.CHECK NO. 2 SIDE AIRBAG SENSOR ASSEMBLY RH


    Yaris. Ncp93, 131.Supplemental Restraint Systems.Airbag System (For Sedan). Dtc B1692/81 Lost Communication With Door Side Airbag Sensor Rh

  1. Connect the connectors to the door side airbag sensor RH and airbag sensor assembly.

  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 RM000000XFE0F4X.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 RM000000XFE0F4X.html).

    Result
    Result
    		Proceed to
    DTC B1692/81 or B1693/81 is output.
    		A
    DTC B1697/82 or B1698/82 is output.
    (for 5 Door)
    		B
    DTC B1697/82 or B1698/82 is output.
    (for 3 Door)
    		C
    DTC B1692/81, B1693/81, B1697/82 and B1698/82 are not output.
    		D
    Text in Illustration
    *1
    		No. 2 Side Airbag Sensor Assembly LH
    *2
    		Side Airbag Sensor Assembly RH
    HINT:
    Codes other than DTCs B1692/81, B1693/81, B1697/82 and B1698/82 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 NO. 2 SIDE AIRBAG SENSOR ASSEMBLY RH (YARIS_NCP93 RM000001IBD02AX.html)

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

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


7.CHECK DOOR SIDE AIRBAG SENSOR RH


    Yaris. Ncp93, 131.Supplemental Restraint Systems.Airbag System (For Sedan). Dtc B1692/81 Lost Communication With Door Side Airbag Sensor Rh

  1. Interchange the door side airbag sensor RH with the door side airbag sensor 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 RM000000XFE0F4X.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 RM000000XFE0F4X.html).

    Result
    Result
    		Proceed to
    DTC B1692/81, B1693/81, B1697/82 and B1698/82 are not output.
    		A
    DTC B1692/81 or B1693/81 is output.
    		B
    DTC B1697/82 or B1698/82 is output.
    		C
    Text in Illustration
    *1
    		Door Side Airbag Sensor LH
    *2
    		No. 2 Side Airbag Sensor Assembly RH
    HINT:
    Codes other than DTCs B1692/81, B1693/81, B1697/82 and B1698/82 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 door side airbag sensor LH and the door side airbag sensor RH to their original positions and connect the connectors to them.



B
REPLACE AIRBAG SENSOR ASSEMBLY (YARIS_NCP93 RM000000V6U02AX.html)

C
REPLACE DOOR SIDE AIRBAG SENSOR RH (YARIS_NCP93 RM000001IB7021X.html)
A

USE SIMULATION METHOD TO CHECK (YARIS_NCP93 RM00000135202EX.html)

8.CHECK FRONT DOOR WIRE RH (OPEN)


  1. Disconnect the floor wire connector from the front door wire RH.


    Yaris. Ncp93, 131.Supplemental Restraint Systems.Airbag System (For Sedan). Dtc B1692/81 Lost Communication With Door Side Airbag Sensor Rh


    Text in Illustration
    *1
    		Door Side Airbag Sensor RH
    		*2
    		No. 2 Side Airbag Sensor Assembly RH
    *3
    		Front Door Wire RH
    		*4
    		Floor Wire
    *5
    		Connector D
    		*6
    		Connector E
    *7
    		Service Wire
    		-
    		-
    *a
    		Front view of wire harness connector
    (to Floor Wire)
    		*b
    		Front view of wire harness connector
    (to Door Side Airbag Sensor RH)
    HINT:
    The service wire has already been inserted into connector E.

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

    Standard Resistance:
    Tester Connection
    		Condition
    		Specified Condition
    FJ1-1 (BDR+) - FJ1-2 (BDR-)
    		Always
    		Below 1 Ω

  1. Disconnect the service wire from connector E.



NG
REPLACE FRONT DOOR WIRE RH
OK

REPLACE FLOOR WIRE

9.CHECK FRONT DOOR WIRE RH (SHORT)


    Yaris. Ncp93, 131.Supplemental Restraint Systems.Airbag System (For Sedan). Dtc B1692/81 Lost Communication With Door Side Airbag Sensor Rh

  1. Disconnect the floor wire connector from the front door wire RH.

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

    Standard Resistance:
    Tester Connection
    		Condition
    		Specified Condition
    FJ1-1 (BDR+) - FJ1-2 (BDR-)
    		Always
    		1 MΩ or higher
    Text in Illustration
    *1
    		Door Side Airbag Sensor RH
    *2
    		No. 2 Side Airbag Sensor Assembly RH
    *3
    		Front Door Wire RH
    *4
    		Floor Wire
    *5
    		Connector D
    *a
    		Front view of wire harness connector
    (to Floor Wire)


NG
REPLACE FRONT DOOR WIRE RH
OK

REPLACE FLOOR WIRE

10.CHECK FRONT DOOR WIRE RH (SHORT TO B+)

  1. Turn the ignition switch off.



    Yaris. Ncp93, 131.Supplemental Restraint Systems.Airbag System (For Sedan). Dtc B1692/81 Lost Communication With Door Side Airbag Sensor Rh

  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. Disconnect the front door wire connector from the floor wire.

  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
    FJ1-1 (BDR+) - Body ground
    		Ignition switch ON
    		Below 1 V
    FJ1-2 (BDR-) - Body ground
    		Ignition switch ON
    		Below 1 V
    Text in Illustration
    *1
    		Door Side Airbag Sensor RH
    *2
    		No. 2 Side Airbag Sensor Assembly RH
    *3
    		Front Door Wire RH
    *4
    		Floor Wire
    *5
    		Connector D
    *a
    		Front view of wire harness connector
    (to Floor Wire)


NG
REPLACE FRONT DOOR WIRE RH
OK

REPLACE FLOOR WIRE

11.CHECK FRONT DOOR WIRE RH (SHORT TO GROUND)


    Yaris. Ncp93, 131.Supplemental Restraint Systems.Airbag System (For Sedan). Dtc B1692/81 Lost Communication With Door Side Airbag Sensor Rh

  1. Disconnect the front door wire connector from the floor wire.

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

    Standard Resistance:
    Tester Connection
    		Condition
    		Specified Condition
    FJ1-1 (BDR+) - Body ground
    		Always
    		1 MΩ or higher
    FJ1-2 (BDR-) - Body ground
    		Always
    		1 MΩ or higher
    Text in Illustration
    *1
    		Door Side Airbag Sensor RH
    *2
    		No. 2 Side Airbag Sensor Assembly RH
    *3
    		Front Door Wire RH
    *4
    		Floor Wire
    *5
    		Connector D
    *a
    		Front view of wire harness connector
    (to Floor Wire)


NG
REPLACE FRONT DOOR WIRE RH
OK

REPLACE FLOOR WIRE