AIRBAG SYSTEM, Diagnostic DTC:B1647/82

DTC Code DTC Name
B1647/82 Lost Communication with Front Passenger Side Satellite Sensor Bus

DESCRIPTION

The circuit for the passenger side - side collision sensor and passenger side rear collision sensor (to determine deployment of the front seat side airbag (passenger side), curtain shield airbag (passenger side), SRS seat cushion airbag and rear window curtain shield airbag) is composed of the center airbag sensor assembly, passenger side - side airbag sensor (for front side), passenger side - side airbag sensor (for rear side) and passenger side rear airbag sensor.

The passenger side - side airbag sensor (for front side), passenger side - side airbag sensor (for rear side) and passenger side rear airbag sensor detect impacts to the vehicle and send signals to the center airbag sensor assembly to determine if the airbag should be deployed.

DTC B1647/82 is recorded when a malfunction is detected in the circuit for the passenger side - side collision sensor and passenger side rear collision sensor (to determine deployment of the front seat side airbag (passenger side), curtain shield airbag (passenger side), SRS seat cushion airbag and rear window curtain shield airbag).

DTC No. DTC Detection Condition Trouble Area
B1647/82

When one of following conditions is met:


  • 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 circuit for the passenger side - side collision sensor and passenger side rear collision sensor (to determine deployment of the front seat side airbag (passenger side), curtain shield airbag (passenger side), SRS seat cushion airbag and rear window curtain shield airbag) for 2 seconds.

  • Passenger side - side airbag sensor (for front side) malfunction

  • Passenger side - side airbag sensor (for rear side) malfunction

  • Passenger side rear airbag sensor malfunction

  • Center airbag sensor assembly malfunction

  • Floor wire

  • Front door wire (passenger side)

  • Passenger side - side airbag sensor (for front side)

  • Passenger side - side airbag sensor (for rear side)

  • Passenger side rear airbag sensor

  • Center airbag sensor assembly

WIRING DIAGRAM

A0119GWE18
A0119GWE08

INSPECTION PROCEDURE

PROCEDURE


  1. CHECK CONNECTION OF CONNECTORS


    1. Turn the ignition switch off.

    2. Disconnect the negative (-) terminal cable from the battery, and wait for at least 90 seconds.

    3. Check that the connectors are properly connected to the center airbag sensor assembly and front passenger side - side airbag sensor (for front side).

      OK
      The connectors are properly connected.

    NG

    CONNECT CONNECTORS PROPERLY

    OK

  2. CHECK CONNECTORS


    1. Disconnect the connectors from the center airbag sensor assembly and passenger side - side airbag sensor (for front side).

    2. Check that the connectors (on the center airbag sensor assembly side and passenger side - side airbag sensor (for front side) side) are not damaged.

      OK
      The connectors are not deformed or damaged.

    NG

    REPLACE HARNESS AND CONNECTOR

    OK

  3. CHECK PASSENGER SIDE - SIDE AIRBAG SENSOR (FOR FRONT SIDE) CIRCUIT (CENTER AIRBAG SENSOR - SIDE AIRBAG SENSOR (FOR FRONT SIDE))

    A0119FHE02
    Text in Illustration
    *A for LHD *B for RHD
    *a

    Rear view of wire harness connector

    (to Passenger Side - Side Airbag Sensor (for Front Side))

    		 *b

    Rear view of wire harness connector

    (to Center Airbag Sensor Assembly)
    *c Passenger Side - Side Airbag Sensor (for Front Side) *d Center Airbag Sensor Assembly
    *e Connector E *f Connector B
    *g Service Wire - -

    1. Connect the negative (-) terminal cable to the battery, and wait for at least 2 seconds.

    2. Turn the ignition switch to ON.

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

      Standard Voltage
      for LHD
      Tester Connection Switch Condition Specified Condition
      E8-4 (BBR+) - Body ground Ignition switch ON Below 1 V
      E8-3 (BBR-) - Body ground Ignition switch ON Below 1 V
      for RHD
      Tester Connection Switch Condition Specified Condition
      F8-4 (BBL+) - Body ground Ignition switch ON Below 1 V
      F8-3 (BBL-) - Body ground Ignition switch ON Below 1 V

    4. Turn the ignition switch off.

    5. Disconnect the negative (-) terminal cable from the battery, and wait for at least 90 seconds.

    6. for LHD


      1. Using a service wire, connect terminals 8 (BBP+) and 11 (BBP-) of connector B.

        Note

        Do not forcibly insert a service wire into the terminals of the connector when connecting the wire.

    7. for RHD


      1. Using a service wire, connect terminals 8 (BBL+) and 15 (BBL-) of connector B.

        Note

        Do not forcibly insert a service wire into the terminals of the connector when connecting the wire.

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

      Standard Resistance
      for LHD
      Tester Connection Condition Specified Condition
      E8-4 (BBR+) - E8-3 (BBR-) Always Below 1 Ω
      for RHD
      Tester Connection Condition Specified Condition
      F8-4 (BBL+) - F8-3 (BBL-) Always Below 1 Ω

    9. Disconnect the service wire from connector B.

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

      Standard Resistance
      for LHD
      Tester Connection Condition Specified Condition
      E8-4 (BBR+) - E8-3 (BBR-) Always 1 MΩ or higher
      E8-4 (BBR+) - Body ground Always 1 MΩ or higher
      E8-3 (BBR-) - Body ground Always 1 MΩ or higher
      for RHD
      Tester Connection Condition Specified Condition
      F8-4 (BBL+) - F8-3 (BBL-) Always 1 MΩ or higher
      F8-4 (BBL+) - Body ground Always 1 MΩ or higher
      F8-3 (BBL-) - Body ground Always 1 MΩ or higher

    NG

    CHECK FLOOR WIRE (CENTER AIRBAG SENSOR - FRONT DOOR WIRE (PASSENGER SIDE)) Click here

    OK

  4. CHECK PASSENGER SIDE - SIDE AIRBAG SENSOR (FOR REAR SIDE) CIRCUIT

    A0119P8E08
    Text in Illustration
    *A for LHD *B for RHD
    *a

    Rear view of wire harness connector

    (to Passenger Side - Side Airbag Sensor (for Front Side))

    		 *b

    Rear view of wire harness connector

    (to Passenger Side - Side Airbag Sensor (for Rear Side))
    *c Passenger Side - Side Airbag Sensor (for Front Side) *d Passenger Side - Side Airbag Sensor (for Rear Side)
    *e Connector E *f Connector B
    *g Service Wire - -

    1. Disconnect the connectors from the passenger side - side airbag sensor (for front side) and passenger side - side airbag sensor (for rear side).

    2. Connect the negative (-) terminal cable to the battery, and wait for at least 2 seconds.

    3. Turn the ignition switch to ON.

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

      Standard Voltage
      for LHD
      Tester Connection Switch Condition Specified Condition
      G16-4 (BCR+) - Body ground Ignition switch ON Below 1 V
      G16-3 (BCR-) - Body ground Ignition switch ON Below 1 V
      for RHD
      Tester Connection Switch Condition Specified Condition
      G17-4 (BCL+) - Body ground Ignition switch ON Below 1 V
      G17-3 (BCL-) - Body ground Ignition switch ON Below 1 V

    5. Turn the ignition switch off.

    6. Disconnect the negative (-) terminal cable from the battery, and wait for at least 90 seconds.

    7. Using a service wire, connect terminals 1 and 2 of connector E.

      Note

      Do not forcibly insert a service wire into the terminals of the connector when connecting the wire.

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

      Standard Resistance
      for LHD
      Tester Connection Condition Specified Condition
      G16-4 (BCR+) - G16-3 (BCR-) Always Below 1 Ω
      for RHD
      Tester Connection Condition Specified Condition
      G17-4 (BCL+) - G17-3 (BCL-) Always Below 1 Ω

    9. Disconnect the service wire from connector E.

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

      Standard Resistance
      for LHD
      Tester Connection Condition Specified Condition
      G16-4 (BCR+) - G16-3 (BCR-) Always 1 MΩ or higher
      G16-4 (BCR+) - Body ground Always 1 MΩ or higher
      G16-3 (BCR-) - Body ground Always 1 MΩ or higher
      for RHD
      Tester Connection Condition Specified Condition
      G17-4 (BCL+) - G17-3 (BCL-) Always 1 MΩ or higher
      G17-4 (BCL+) - Body ground Always 1 MΩ or higher
      G17-3 (BCL-) - Body ground Always 1 MΩ or higher

    NG

    CHECK FLOOR WIRE (SIDE AIRBAG SENSOR (FOR REAR SIDE) - FRONT DOOR WIRE) Click here

    OK

  5. CHECK FLOOR WIRE (SIDE AIRBAG SENSOR (FOR REAR SIDE) - REAR AIRBAG SENSOR)

    A011B2JE07
    Text in Illustration
    *A for LHD *B for RHD
    *a

    Front view of wire harness connector

    (to Passenger Side Rear Airbag Sensor)

    		 *b

    Rear view of wire harness connector

    (to Passenger Side - Side Airbag Sensor (for Rear Side))
    *c Passenger Side Rear Airbag Sensor *d Passenger Side - Side Airbag Sensor (for Rear Side)
    *e Floor Wire *f Connector C
    *g Connector B *h Service Wire

    1. Disconnect the connectors from the passenger side - side airbag sensor (for rear side) and passenger side rear airbag sensor.

    2. Connect the negative (-) terminal cable to the battery, and wait for at least 2 seconds.

    3. Turn the ignition switch to ON.

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

      Standard Voltage
      for LHD
      Tester Connection Switch Condition Specified Condition
      G16-1 (BER+) - Body ground Ignition switch ON Below 1 V
      G16-2 (BER-) - Body ground Ignition switch ON Below 1 V
      for RHD
      Tester Connection Switch Condition Specified Condition
      G17-1 (BEL+) - Body ground Ignition switch ON Below 1 V
      G17-2 (BEL-) - Body ground Ignition switch ON Below 1 V

    5. Turn the ignition switch off.

    6. Disconnect the negative (-) terminal cable from the battery, and wait for at least 90 seconds.

    7. Using a service wire, connect terminals 2 and 1 of connector C.

      Note

      Do not forcibly insert a service wire into the terminals of the connector when connecting the wire.

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

      Standard Resistance
      for LHD
      Tester Connection Condition Specified Condition
      G16-1 (BER+) - G16-2 (BER-) Always Below 1 Ω
      for RHD
      Tester Connection Condition Specified Condition
      G17-1 (BEL+) - G17-2 (BEL-) Always Below 1 Ω

    9. Disconnect the service wire from connector C.

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

      Standard Resistance
      for LHD
      Tester Connection Condition Specified Condition
      G16-1 (BER+) - G16-2 (BER-) Always 1 MΩ or higher
      G16-1 (BER+) - Body ground Always 1 MΩ or higher
      G16-2 (BER-) - Body ground Always 1 MΩ or higher
      for RHD
      Tester Connection Condition Specified Condition
      G17-1 (BEL+) - G17-2 (BEL-) Always 1 MΩ or higher
      G17-1 (BEL+) - Body ground Always 1 MΩ or higher
      G17-2 (BEL-) - Body ground Always 1 MΩ or higher

    NG

    REPLACE FLOOR WIRE

    OK

  6. CHECK PASSENGER SIDE - SIDE AIRBAG SENSOR (FOR FRONT SIDE)


    1. A0119WVE02
      Text in Illustration
      *A for LHD
      *B for RHD
      *a Driver Side - Side Airbag Sensor (for Front Side)
      *b Center Airbag Sensor Assembly

      Interchange the passenger side - side airbag sensor (for front side) with driver side - side airbag sensor (for front side) and connect the connectors to them.

    2. Connect the negative (-) terminal cable to the battery, and wait for at least 2 seconds.

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

    4. Clear the DTCs stored in the memory Click here.

    5. Turn the ignition switch off.

    6. Turn the ignition switch to ON, and wait for at least 90 seconds.

    7. Check for DTCs Click here.

      Result
      Result Proceed to
      DTC B1642/81 and B1647/82 are not output A
      DTC B1642/81 is output B
      DTC B1647/82 is output C

    A

    USE SIMULATION METHOD TO CHECK Click here

    B

    REPLACE PASSENGER SIDE - SIDE AIRBAG SENSOR (FOR FRONT SIDE) Click here

    C

  7. CHECK PASSENGER SIDE - SIDE AIRBAG SENSOR (FOR REAR SIDE)

    A0118YEE02
    Text in Illustration
    *a Driver Side - Side Airbag Sensor (for Rear Side)
    *b Passenger Side - Side Airbag Sensor (for Front Side)

    1. Interchange the passenger side - side airbag sensor (for rear side) with driver side - side airbag sensor (for rear side) and connect the connectors to them.

    2. Connect the negative (-) terminal cable to the battery, and wait for at least 2 seconds.

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

    4. Clear the DTCs stored in the memory Click here.

    5. Turn the ignition switch off.

    6. Turn the ignition switch to ON, and wait for at least 90 seconds.

    7. Check for DTCs Click here.

      Result
      Result Proceed to
      DTC B1642/81 and B1647/82 are not output A
      DTC B1642/81 is output B
      DTC B1647/82 is output C

    A

    USE SIMULATION METHOD TO CHECK Click here

    B

    REPLACE PASSENGER SIDE - SIDE AIRBAG SENSOR (FOR REAR SIDE) Click here

    C

  8. CHECK PASSENGER SIDE REAR AIRBAG SENSOR

    A0117TGE15
    Text in Illustration
    *a Driver Side Rear Airbag Sensor
    *b Passenger Side - Side Airbag Sensor (for Rear Side)

    1. Interchange the passenger side rear airbag sensor with driver side rear airbag sensor and connect the connectors to them.

    2. Connect the negative (-) terminal cable to the battery, and wait for at least 2 seconds.

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

    4. Clear the DTCs stored in the memory Click here.

    5. Turn the ignition switch off.

    6. Turn the ignition switch to ON, and wait for at least 90 seconds.

    7. Check for DTCs Click here.

      Result
      Result Proceed to
      DTC B1642/81 is output A
      DTC B1647/82 is output B
      DTC B1642/81 and B1647/82 are not output C

      Tech Tips

      DTCs other than B1642/81 and B1647/82 may be output at this time, but they are not related to this check.


    A

    REPLACE PASSENGER SIDE REAR AIRBAG SENSOR Click here

    B

    REPLACE CENTER AIRBAG SENSOR ASSEMBLY Click here

    C

    USE SIMULATION METHOD TO CHECK Click here

  9. CHECK FLOOR WIRE (CENTER AIRBAG SENSOR - FRONT DOOR WIRE (PASSENGER SIDE))

    A011BJ1E02
    Text in Illustration
    *A for LHD *B for RHD
    *a

    Front view of wire harness connector

    (to Front Door Wire (Passenger Side))

    		 *b

    Rear view of wire harness connector

    (to Center Airbag Sensor Assembly)
    *c Passenger Side - Side Airbag Sensor (for Front Side) *d Center Airbag Sensor Assembly
    *e Front Door Wire (Passenger Side) *f Floor Wire
    *g Connector C *h Connector B
    *i Service Wire - -

    1. Disconnect the floor wire connector from the front door wire (passenger side).

    2. Connect the negative (-) terminal cable to the battery, and wait for at least 2 seconds.

    3. Turn the ignition switch to ON.

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

      Standard Voltage
      for LHD
      Tester Connection Switch Condition Specified Condition
      EG1-1 (BBR+) - Body ground Ignition switch ON Below 1 V
      EG1-2 (BBR-) - Body ground Ignition switch ON Below 1 V
      for RHD
      Tester Connection Switch Condition Specified Condition
      FG1-1 (BBL+) - Body ground Ignition switch ON Below 1 V
      FG1-2 (BBL-) - Body ground Ignition switch ON Below 1 V

    5. Turn the ignition switch off.

    6. Disconnect the negative (-) terminal cable from the battery, and wait for at least 90 seconds.

    7. for LHD


      1. Using a service wire, connect terminals 8 (BBP+) and 11 (BBP-) of connector B.

        Note

        Do not forcibly insert a service wire into the terminals of the connector when connecting the wire.

    8. for RHD


      1. Using a service wire, connect terminals 8 (BBL+) and 15 (BBL-) of connector B.

        Note

        Do not forcibly insert a service wire into the terminals of the connector when connecting the wire.

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

      Standard Resistance
      for LHD
      Tester Connection Condition Specified Condition
      EG1-1 (BBR+) - EG1-2 (BBR-) Always Below 1 Ω
      for RHD
      Tester Connection Condition Specified Condition
      FG1-1 (BBL+) - FG1-2 (BBL-) Always Below 1 Ω

    10. Disconnect the service wire from connector B.

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

      Standard Resistance
      for LHD
      Tester Connection Condition Specified Condition
      EG1-1 (BBR+) - EG1-2 (BBR-) Always 1 MΩ or higher
      EG1-1 (BBR+) - Body ground Always 1 MΩ or higher
      EG1-2 (BBR-) - Body ground Always 1 MΩ or higher
      for RHD
      Tester Connection Condition Specified Condition
      FG1-1 (BBL+) - FG1-2 (BBL-) Always 1 MΩ or higher
      FG1-1 (BBL+) - Body ground Always 1 MΩ or higher
      FG1-2 (BBL-) - Body ground Always 1 MΩ or higher

    NG

    REPLACE FLOOR WIRE

    OK

    REPLACE FRONT DOOR WIRE (PASSENGER SIDE)

  10. CHECK FLOOR WIRE (SIDE AIRBAG SENSOR (FOR REAR SIDE) - FRONT DOOR WIRE)

    A0119PVE08
    Text in Illustration
    *A for LHD *B for RHD
    *a

    Front view of wire harness connector

    (to Front Door Wire (Passenger Side))

    		 *b

    Rear view of wire harness connector

    (to Passenger Side - Side Airbag Sensor (for Rear Side))
    *c Passenger Side - Side Airbag Sensor (for Front Side) *d Passenger Side - Side Airbag Sensor (for Rear Side)
    *e Front Door Wire (Passenger Side) *f Floor Wire
    *g Connector C *h Connector B
    *i Service Wire - -

    1. Disconnect the floor wire connector from the front door wire (passenger side).

    2. Connect the negative (-) terminal cable to the battery, and wait for at least 2 seconds.

    3. Turn the ignition switch to ON.

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

      Standard Voltage
      for LHD
      Tester Connection Switch Condition Specified Condition
      EG1-3 (BCR+) - Body ground Ignition switch ON Below 1 V
      EG1-4 (BCR-) - Body ground Ignition switch ON Below 1 V
      for RHD
      Tester Connection Switch Condition Specified Condition
      FG1-3 (BCL+) - Body ground Ignition switch ON Below 1 V
      FG1-4 (BCL-) - Body ground Ignition switch ON Below 1 V

    5. Turn the ignition switch off.

    6. Disconnect the negative (-) terminal cable from the battery, and wait for at least 90 seconds.

    7. Using a service wire, connect terminals 3 and 4 of connector B.

      Note

      Do not forcibly insert a service wire into the terminals of the connector when connecting the wire.

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

      Standard Resistance
      for LHD
      Tester Connection Condition Specified Condition
      EG1-3 (BCR+) - EG1-4 (BCR-) Always Below 1 Ω
      for RHD
      Tester Connection Condition Specified Condition
      FG1-3 (BCL+) - FG1-4 (BCL-) Always Below 1 Ω

    9. Disconnect the service wire from connector B.

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

      Standard Resistance
      for LHD
      Tester Connection Condition Specified Condition
      EG1-3 (BCR+) - EG1-4 (BCR-) Always 1 MΩ or higher
      EG1-3 (BCR+) - Body ground Always 1 MΩ or higher
      EG1-4 (BCR-) - Body ground Always 1 MΩ or higher
      for RHD
      Tester Connection Condition Specified Condition
      FG1-3 (BCL+) - FG1-4 (BCL-) Always 1 MΩ or higher
      FG1-3 (BCL+) - Body ground Always 1 MΩ or higher
      FG1-4 (BCL-) - Body ground Always 1 MΩ or higher

    NG

    REPLACE FLOOR WIRE

    OK

    REPLACE FRONT DOOR WIRE (PASSENGER SIDE)