Dtc B1697/82 Lost Communication With Door Side Airbag Sensor Lh

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 LH (OPEN)

CHECK FLOOR WIRE AND FRONT DOOR WIRE LH (SHORT)

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

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

CHECK NO. 2 SIDE AIRBAG SENSOR ASSEMBLY LH

CHECK DOOR SIDE AIRBAG SENSOR LH

CHECK FRONT DOOR WIRE LH (OPEN)

CHECK FRONT DOOR WIRE LH (SHORT)

CHECK FRONT DOOR WIRE LH (SHORT TO B+)

CHECK FRONT DOOR WIRE LH (SHORT TO GROUND)

DTC B1697/82 Lost Communication with Door Side Airbag Sensor LH

DTC B1698/82 Door Side Airbag Sensor LH Initialization Incomplete


DESCRIPTION

The circuit for the side collision sensor LH (to determine deployment of the front seat side airbag LH and curtain shield airbag LH) is composed of the airbag sensor assembly, door side airbag sensor LH and No. 2 side airbag sensor assembly LH.
The door side airbag sensor LH and No. 2 side airbag sensor assembly LH detect impacts to the vehicle and send signals to the airbag sensor assembly to determine if the airbag should be deployed.
DTC B1697/82 and B1698/82 are recorded when a malfunction is detected in the circuit for the side collision sensor LH (to determine deployment of the front seat side airbag LH and curtain shield airbag LH).

DTC No.
DTC Detection Condition
Trouble Area
B1697/82
B1698/82
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 LH (to determine deployment of the front seat side airbag LH and curtain shield airbag LH) for 2 seconds.
  2. Door side airbag sensor LH malfunction
  3. No. 2 side airbag sensor assembly LH malfunction
  4. Airbag sensor assembly malfunction
  1. Floor wire
  2. Front door wire LH
  3. Door side airbag sensor LH
  4. No. 2 side airbag sensor assembly LH
  5. Airbag sensor assembly

WIRING DIAGRAM


Yaris. Ncp93, 131.Supplemental Restraint Systems.Airbag System (For Sedan). Dtc B1697/82 Lost Communication With Door Side Airbag Sensor Lh


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 LH and No. 2 side airbag sensor assembly LH.

    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 LH and No. 2 side airbag sensor assembly LH.

  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 LH (OPEN)


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


    Yaris. Ncp93, 131.Supplemental Restraint Systems.Airbag System (For Sedan). Dtc B1697/82 Lost Communication With Door Side Airbag Sensor Lh


    Text in Illustration
    *1
    		Door Side Airbag Sensor LH
    		*2
    		No. 2 Side Airbag Sensor Assembly LH
    *3
    		Front Door Wire LH
    		*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 LH)
    		*b
    		Front view of wire harness connector
    (to Door Side Airbag Sensor LH)
    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
    J75-1 (BDL+) - J75-2 (BDL-)
    		Always
    		Below 1 Ω


NG
Go to step 8
OK


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


    Yaris. Ncp93, 131.Supplemental Restraint Systems.Airbag System (For Sedan). Dtc B1697/82 Lost Communication With Door Side Airbag Sensor Lh

  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
    J75-1 (BDL+) - J75-2 (BDL-)
    		Always
    		1 MΩ or higher
    Text in Illustration
    *1
    		Door Side Airbag Sensor LH
    *2
    		No. 2 Side Airbag Sensor Assembly LH
    *3
    		Front Door Wire LH
    *4
    		Floor Wire
    *5
    		Connector B
    *a
    		Front view of wire harness connector
    (to No. 2 Side Airbag Sensor Assembly LH)


NG
Go to step 9
OK


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


    Yaris. Ncp93, 131.Supplemental Restraint Systems.Airbag System (For Sedan). Dtc B1697/82 Lost Communication With Door Side Airbag Sensor Lh

  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
    J75-1 (BDL+) - Body ground
    		Ignition switch ON
    		Below 1 V
    J75-2 (BDL-) - Body ground
    		Ignition switch ON
    		Below 1 V
    Text in Illustration
    *1
    		Door Side Airbag Sensor LH
    *2
    		No. 2 Side Airbag Sensor Assembly LH
    *3
    		Front Door Wire LH
    *4
    		Floor Wire
    *5
    		Connector B
    *a
    		Front view of wire harness connector
    (to No. 2 Side Airbag Sensor Assembly LH)


NG
Go to step 10
OK


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


    Yaris. Ncp93, 131.Supplemental Restraint Systems.Airbag System (For Sedan). Dtc B1697/82 Lost Communication With Door Side Airbag Sensor Lh

  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
    J75-1 (BDL+) - Body ground
    		Always
    		1 MΩ or higher
    J75-2 (BDL-) - Body ground
    		Always
    		1 MΩ or higher
    Text in Illustration
    *1
    		Door Side Airbag Sensor LH
    *2
    		No. 2 Side Airbag Sensor Assembly LH
    *3
    		Front Door Wire LH
    *4
    		Floor Wire
    *5
    		Connector B
    *a
    		Front view of wire harness connector
    (to No. 2 Side Airbag Sensor Assembly LH)


NG
Go to step 11
OK


6.CHECK NO. 2 SIDE AIRBAG SENSOR ASSEMBLY LH


    Yaris. Ncp93, 131.Supplemental Restraint Systems.Airbag System (For Sedan). Dtc B1697/82 Lost Communication With Door Side Airbag Sensor Lh

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

  1. Interchange the No. 2 side airbag sensor assembly LH with the No. 2 side airbag sensor assembly RH 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 1692/81, B1693/81, B1697/82 and B1698/82 are not output.
    		D
    Text in Illustration
    *1
    		No. 2 Side Airbag Sensor Assembly RH
    *2
    		Side Airbag Sensor Assembly LH
    HINT:
    Codes other than DTCs 1692/81, 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 LH and the No. 2 side airbag sensor assembly RH to their original positions and connect the connectors to them.



B
REPLACE NO. 2 SIDE AIRBAG SENSOR ASSEMBLY LH (YARIS_NCP93 RM000001IBD02AX.html)

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

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


7.CHECK DOOR SIDE AIRBAG SENSOR LH


    Yaris. Ncp93, 131.Supplemental Restraint Systems.Airbag System (For Sedan). Dtc B1697/82 Lost Communication With Door Side Airbag Sensor Lh

  1. Interchange the door side airbag sensor LH with the door side airbag sensor RH 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 1692/81, B1693/81, B1697/82 and B1698/82 are not output.
    		A
    DTC B1697/82 or B1698/82 is output.
    		B
    DTC B1692/81 or B1693/81 is output.
    		C
    Text in Illustration
    *1
    		Door Side Airbag Sensor RH
    *2
    		No. 2 Side Airbag Sensor Assembly LH
    HINT:
    Codes other than DTCs 1692/81, 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 LH (YARIS_NCP93 RM000001IB7021X.html)
A

USE SIMULATION METHOD TO CHECK (YARIS_NCP93 RM00000135202EX.html)

8.CHECK FRONT DOOR WIRE LH (OPEN)


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


    Yaris. Ncp93, 131.Supplemental Restraint Systems.Airbag System (For Sedan). Dtc B1697/82 Lost Communication With Door Side Airbag Sensor Lh


    Text in Illustration
    *1
    		Door Side Airbag Sensor LH
    		*2
    		No. 2 Side Airbag Sensor Assembly LH
    *3
    		Front Door Wire LH
    		*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 LH)
    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
    GJ1-1 (BDL+) - GJ1-2 (BDL-)
    		Always
    		Below 1 Ω

  1. Disconnect the service wire from the connector E.



NG
REPLACE FRONT DOOR WIRE LH
OK

REPLACE FLOOR WIRE

9.CHECK FRONT DOOR WIRE LH (SHORT)


    Yaris. Ncp93, 131.Supplemental Restraint Systems.Airbag System (For Sedan). Dtc B1697/82 Lost Communication With Door Side Airbag Sensor Lh

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

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

    Standard Resistance:
    Tester Connection
    		Condition
    		Specified Condition
    GJ1-1 (BDL+) - GJ1-2 (BDL-)
    		Always
    		1 MΩ or higher
    Text in Illustration
    *1
    		Door Side Airbag Sensor LH
    *2
    		No. 2 Side Airbag Sensor Assembly LH
    *3
    		Front Door Wire LH
    *4
    		Floor Wire
    *5
    		Connector D
    *a
    		Front view of wire harness connector
    (to Floor Wire)


NG
REPLACE FRONT DOOR WIRE LH
OK

REPLACE FLOOR WIRE

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

  1. Turn the ignition switch off.



    Yaris. Ncp93, 131.Supplemental Restraint Systems.Airbag System (For Sedan). Dtc B1697/82 Lost Communication With Door Side Airbag Sensor Lh

  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
    GJ1-1 (BDL+) - Body ground
    		Ignition switch ON
    		Below 1 V
    GJ1-2 (BDL-) - Body ground
    		Ignition switch ON
    		Below 1 V
    Text in Illustration
    *1
    		Door Side Airbag Sensor LH
    *2
    		No. 2 Side Airbag Sensor Assembly LH
    *3
    		Front Door Wire LH
    *4
    		Floor Wire
    *5
    		Connector D
    *a
    		Front view of wire harness connector
    (to Floor Wire)


NG
REPLACE FRONT DOOR WIRE LH
OK

REPLACE FLOOR WIRE

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


    Yaris. Ncp93, 131.Supplemental Restraint Systems.Airbag System (For Sedan). Dtc B1697/82 Lost Communication With Door Side Airbag Sensor Lh

  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
    GJ1-1 (BDL+) - Body ground
    		Always
    		1 MΩ or higher
    GJ1-2 (BDL-) - Body ground
    		Always
    		1 MΩ or higher
    Text in Illustration
    *1
    		Door Side Airbag Sensor LH
    *2
    		No. 2 Side Airbag Sensor Assembly LH
    *3
    		Front Door Wire LH
    *4
    		Floor Wire
    *5
    		Connector D
    *a
    		Front view of wire harness connector
    (to Floor Wire)


NG
REPLACE FRONT DOOR WIRE LH
OK

REPLACE FLOOR WIRE