AIRBAG SYSTEM, Diagnostic DTC:B1653/35

DTC Code DTC Name
B1653/35 Seat Position Airbag Sensor Circuit Malfunction

DESCRIPTION

The seat position airbag sensor circuit consists of the airbag sensor assembly, front seat inner belt assembly LH (for LHD) or front seat inner belt assembly RH (for RHD) and seat position airbag sensor.

DTC B1653/35 is stored when a malfunction is detected in the seat position airbag sensor circuit.

DTC No. DTC Detection Condition Trouble Area
B1653/35

  • 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 seat position airbag sensor circuit.

  • Front seat inner belt assembly LH (for LHD) or front seat inner belt assembly RH (for RHD) malfunction

  • Seat position airbag sensor malfunction

  • Airbag sensor assembly malfunction

    for LHD:

  • Floor wire

  • Front seat inner belt assembly LH

  • Seat position airbag sensor

  • Airbag sensor assembly


    for RHD:

  • No. 2 floor wire

  • Front seat inner belt assembly RH

  • Seat position airbag sensor

  • Airbag sensor assembly

WIRING DIAGRAM

A003YSRE01

INSPECTION PROCEDURE

Note

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.

PROCEDURE


  1. CHECK VEHICLE CONDITION


    1. Check vehicle condition.

      Result
      Result Proceed to
      LHD A
      RHD B

    B

    CHECK CONNECTORS Click here

    A

  2. CHECK CONNECTORS


    1. Turn the power switch off.

    2. 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.

    3. Check that the connectors are properly connected to the airbag sensor assembly, front seat inner belt assembly LH and seat position airbag sensor.

      OK
      The connectors are properly connected.

      Tech Tips

      If the connectors are not connected securely, reconnect the connectors and proceed to the next inspection.

    4. Disconnect the connectors from the airbag sensor assembly, front seat inner belt assembly LH and seat position airbag sensor.

    5. Check that the terminals of the connectors are not damaged.

      OK
      The terminals are not deformed or damaged.

    NG

    REPLACE WIRE HARNESS

    OK

  3. CHECK SEAT POSITION AIRBAG SENSOR CIRCUIT (OPEN)

    SST
    09843-18040

    1. w/o Rear Pretensioner

      A003WW0E03

      1. Connect the connectors to the front seat inner belt assembly LH and floor wire.

      2. Using SST, connect terminals 14 (LSP+) and 13 (LSP-) of connector B.

        Note

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

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

        Standard Resistance
        Tester Connection Condition Specified Condition
        2 (LSP+) - 1 (LSP-) Always Below 1 Ω
        Text in Illustration
        *1 Seat Position Airbag Sensor *2 Airbag Sensor Assembly
        *3 Connector B *4 Connector E
        *a

        Front view of wire harness connector

        (to Airbag Sensor Assembly)

        		 *b

        Front view of wire harness connector

        (to Seat Position Airbag Sensor)
      SST
      09843-18040

    2. w/ Rear Pretensioner

      A003VEXE04

      1. Connect the connectors to the front seat inner belt assembly LH and floor wire.

      2. Using SST, connect terminals 9 (LSP+) and 17 (LSP-) of connector B.

        Note

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

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

        Standard Resistance
        Tester Connection Condition Specified Condition
        2 (LSP+) - 1 (LSP-) Always Below 1 Ω
        Text in Illustration
        *1 Seat Position Airbag Sensor *2 Airbag Sensor Assembly
        *3 Connector B *4 Connector E
        *a

        Front view of wire harness connector

        (to Airbag Sensor Assembly)

        		 *b

        Front view of wire harness connector

        (to Seat Position Airbag Sensor)

    NG

    CHECK FLOOR WIRE (OPEN) Click here

    OK

  4. CHECK SEAT POSITION AIRBAG SENSOR CIRCUIT (SHORT)


    1. A003YNNE09
      Text in Illustration
      *1 Seat Position Airbag Sensor
      *2 Airbag Sensor Assembly
      *3 Connector E
      *a

      Front view of wire harness connector

      (to Seat Position Airbag Sensor)

      w/o Rear Pretensioner


      1. Disconnect SST from connector B.

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

        Standard Resistance
        Tester Connection Condition Specified Condition
        2 (LSP+) - 1 (LSP-) Always 1 MΩ or higher
    2. A003XVDE02
      Text in Illustration
      *1 Seat Position Airbag Sensor
      *2 Airbag Sensor Assembly
      *3 Connector E
      *a

      Front view of wire harness connector

      (to Seat Position Airbag Sensor)

      w/ Rear Pretensioner


      1. Disconnect SST from connector B.

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

        Standard Resistance
        Tester Connection Condition Specified Condition
        2 (LSP+) - 1 (LSP-) Always 1 MΩ or higher

    NG

    CHECK FLOOR WIRE (SHORT) Click here

    OK

  5. CHECK SEAT POSITION AIRBAG SENSOR CIRCUIT (SHORT TO B+)


    1. A003YNNE09
      Text in Illustration
      *1 Seat Position Airbag Sensor
      *2 Airbag Sensor Assembly
      *3 Connector E
      *a

      Front view of wire harness connector

      (to Seat Position Airbag Sensor)

      w/o Rear Pretensioner


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

      2. Turn the power switch on (IG).

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

        Standard Voltage
        Tester Connection Switch Condition Specified Condition
        2 (LSP+) - Body ground Power switch on (IG) Below 1 V
        1 (LSP-) - Body ground Power switch on (IG) Below 1 V
    2. A003XVDE02
      Text in Illustration
      *1 Seat Position Airbag Sensor
      *2 Airbag Sensor Assembly
      *3 Connector E
      *a

      Front view of wire harness connector

      (to Seat Position Airbag Sensor)

      w/ Rear Pretensioner


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

      2. Turn the power switch on (IG).

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

        Standard Voltage
        Tester Connection Switch Condition Specified Condition
        2 (LSP+) - Body ground Power switch on (IG) Below 1 V
        1 (LSP-) - Body ground Power switch on (IG) Below 1 V

    NG

    CHECK FLOOR WIRE (SHORT TO B+) Click here

    OK

  6. CHECK SEAT POSITION AIRBAG SENSOR CIRCUIT (SHORT TO GROUND)


    1. A003YNNE09
      Text in Illustration
      *1 Seat Position Airbag Sensor
      *2 Airbag Sensor Assembly
      *3 Connector E
      *a

      Front view of wire harness connector

      (to Seat Position Airbag Sensor)

      w/o Rear Pretensioner


      1. Turn the power switch off.

      2. 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.

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

        Standard Resistance
        Tester Connection Condition Specified Condition
        2 (LSP+) - Body ground Always 1 MΩ or higher
        1 (LSP-) - Body ground Always 1 MΩ or higher
    2. A003XVDE02
      Text in Illustration
      *1 Seat Position Airbag Sensor
      *2 Airbag Sensor Assembly
      *3 Connector E
      *a

      Front view of wire harness connector

      (to Seat Position Airbag Sensor)

      w/ Rear Pretensioner


      1. Turn the power switch off.

      2. 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.

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

        Standard Resistance
        Tester Connection Condition Specified Condition
        2 (LSP+) - Body ground Always 1 MΩ or higher
        1 (LSP-) - Body ground Always 1 MΩ or higher

    NG

    CHECK FLOOR WIRE (SHORT TO GROUND) Click here

    OK

  7. CHECK DTC


    1. A003WE9E01
      Text in Illustration
      *A w/o Rear Pretensioner
      *B w/ Rear Pretensioner
      *1 Seat Position Airbag Sensor
      *2 Airbag Sensor Assembly

      Connect the connectors to the airbag sensor assembly and seat position airbag sensor.

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

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

    4. Clear the DTCs stored in memory Click here.

    5. Turn the power switch off.

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

    7. Check for DTCs Click here.

      OK
      DTC B1653/35 is not output.

      Tech Tips

      Codes other than DTC B1653/35 may be output at this time, but they are not related to this check.


    NG

    CHECK SEAT POSITION AIRBAG SENSOR Click here

    OK

    USE SIMULATION METHOD TO CHECK Click here

  8. CHECK SEAT POSITION AIRBAG SENSOR


    1. A003WE9E01
      Text in Illustration
      *A w/o Rear Pretensioner
      *B w/ Rear Pretensioner
      *1 Seat Position Airbag Sensor
      *2 Airbag Sensor Assembly

      Turn the power switch off.

    2. 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.

    3. Replace the seat position airbag sensor with a known good one Click here.

      Tech Tips

      Perform the following inspection using known good parts from another vehicle if possible.

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

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

    6. Clear the DTCs stored in memory Click here.

    7. Turn the power switch off.

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

    9. Check for DTCs Click here.

      OK
      DTC B1653/35 is not output.

      Tech Tips

      Codes other than DTC B1653/35 may be output at this time, but they are not related to this check.

    10. Turn the power switch off.

    11. 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.

    12. Restore the seat position airbag sensor that was installed for testing to its original location Click here.


    NG

    REPLACE AIRBAG SENSOR ASSEMBLY Click here

    OK

    REPLACE SEAT POSITION AIRBAG SENSOR Click here

  9. CHECK FLOOR WIRE (OPEN)


    1. w/o Rear Pretensioner

      A003YT1E21

      1. Disconnect the floor wire from the front seat inner belt assembly LH.

        Tech Tips

        SST has already been inserted into connector B.

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

        Standard Resistance
        Tester Connection Condition Specified Condition
        P3-4 (LSP+) - P3-3 (LSP-) Always Below 1 Ω
        Result
        Result Proceed to
        NG A
        OK (for Manual seat) B
        OK (for Power seat) C

      3. Disconnect SST from connector B.

        Text in Illustration
        *1 Seat Position Airbag Sensor *2 Airbag Sensor Assembly
        *3 Front Seat Inner Belt Assembly LH *4 Floor Wire
        *5 Connector B *6 Connector C
        *a

        Front view of wire harness connector

        (to Airbag Sensor Assembly)

        		 *b

        Front view of wire harness connector

        (to Front Seat Inner Belt Assembly LH)

    2. w/ Rear Pretensioner

      A003Y4SE01

      1. Disconnect the floor wire from the front seat inner belt assembly LH.

        Tech Tips

        SST has already been inserted into connector B.

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

        Standard Resistance
        Tester Connection Condition Specified Condition
        P3-4 (LSP+) - P3-3 (LSP-) Always Below 1 Ω
        Result
        Result Proceed to
        NG A
        OK (for Manual seat) B
        OK (for Power seat) C

      3. Disconnect SST from connector B.

        Text in Illustration
        *1 Seat Position Airbag Sensor *2 Airbag Sensor Assembly
        *3 Front Seat Inner Belt Assembly LH *4 Floor Wire
        *5 Connector B *6 Connector C
        *a

        Front view of wire harness connector

        (to Airbag Sensor Assembly)

        		 *b

        Front view of wire harness connector

        (to Front Seat Inner Belt Assembly LH)

    B

    REPLACE FRONT SEAT INNER BELT ASSEMBLY LH Click here

    C

    REPLACE FRONT SEAT INNER BELT ASSEMBLY LH Click here

    A

    REPLACE FLOOR WIRE

  10. CHECK FLOOR WIRE (SHORT)


    1. A003VTCE02
      Text in Illustration
      *1 Seat Position Airbag Sensor
      *2 Airbag Sensor Assembly
      *3 Front Seat Inner Belt Assembly LH
      *4 Floor Wire
      *5 Connector C
      *a

      Front view of wire harness connector

      (to Front Seat Inner Belt Assembly LH)

      w/o Rear Pretensioner


      1. Disconnect the floor wire from the front seat inner belt assembly LH.

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

        Standard Resistance
        Tester Connection Condition Specified Condition
        P3-4 (LSP+) - P3-3 (LSP-) Always 1 MΩ or higher
        Result
        Result Proceed to
        NG A
        OK (for Manual seat) B
        OK (for Power seat) C
    2. A003WMIE01
      Text in Illustration
      *1 Seat Position Airbag Sensor
      *2 Airbag Sensor Assembly
      *3 Front Seat Inner Belt Assembly LH
      *4 Floor Wire
      *5 Connector C
      *a

      Front view of wire harness connector

      (to Front Seat Inner Belt Assembly LH)

      w/ Rear Pretensioner


      1. Disconnect the floor wire from the front seat inner belt assembly LH.

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

        Standard Resistance
        Tester Connection Condition Specified Condition
        P3-4 (LSP+) - P3-3 (LSP-) Always 1 MΩ or higher
        Result
        Result Proceed to
        NG A
        OK (for Manual seat) B
        OK (for Power seat) C

    B

    REPLACE FRONT SEAT INNER BELT ASSEMBLY LH Click here

    C

    REPLACE FRONT SEAT INNER BELT ASSEMBLY LH Click here

    A

    REPLACE FLOOR WIRE

  11. CHECK FLOOR WIRE (SHORT TO B+)


    1. A003VTCE02
      Text in Illustration
      *1 Seat Position Airbag Sensor
      *2 Airbag Sensor Assembly
      *3 Front Seat Inner Belt Assembly LH
      *4 Floor Wire
      *5 Connector C
      *a

      Front view of wire harness connector

      (to Front Seat Inner Belt Assembly LH)

      w/o Rear Pretensioner


      1. Turn the power switch off.

      2. 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.

      3. Disconnect the floor wire from the front seat inner belt assembly LH.

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

      5. Turn the power switch on (IG).

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

        Standard Voltage
        Tester Connection Switch Condition Specified Condition
        P3-4 (LSP+) - Body ground Power switch on (IG) Below 1 V
        P3-3 (LSP-) - Body ground Power switch on (IG) Below 1 V
        Result
        Result Proceed to
        NG A
        OK (for Manual seat) B
        OK (for Power seat) C
    2. A003WMIE01
      Text in Illustration
      *1 Seat Position Airbag Sensor
      *2 Airbag Sensor Assembly
      *3 Front Seat Inner Belt Assembly LH
      *4 Floor Wire
      *5 Connector C
      *a

      Front view of wire harness connector

      (to Front Seat Inner Belt Assembly LH)

      w/ Rear Pretensioner


      1. Turn the power switch off.

      2. 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.

      3. Disconnect the floor wire from the front seat inner belt assembly LH.

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

      5. Turn the power switch on (IG).

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

        Standard Voltage
        Tester Connection Switch Condition Specified Condition
        P3-4 (LSP+) - Body ground Power switch on (IG) Below 1 V
        P3-3 (LSP-) - Body ground Power switch on (IG) Below 1 V
        Result
        Result Proceed to
        NG A
        OK (for Manual seat) B
        OK (for Power seat) C

    B

    REPLACE FRONT SEAT INNER BELT ASSEMBLY LH Click here

    C

    REPLACE FRONT SEAT INNER BELT ASSEMBLY LH Click here

    A

    REPLACE FLOOR WIRE

  12. CHECK FLOOR WIRE (SHORT TO GROUND)


    1. A003VTCE02
      Text in Illustration
      *1 Seat Position Airbag Sensor
      *2 Airbag Sensor Assembly
      *3 Front Seat Inner Belt Assembly LH
      *4 Floor Wire
      *5 Connector C
      *a

      Front view of wire harness connector

      (to Front Seat Inner Belt Assembly LH)

      w/o Rear Pretensioner


      1. Disconnect the floor wire from the front seat inner belt assembly LH.

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

        Standard Resistance
        Tester Connection Condition Specified Condition
        P3-4 (LSP+) - Body ground Always 1 MΩ or higher
        P3-3 (LSP-) - Body ground Always 1 MΩ or higher
        Result
        Result Proceed to
        NG A
        OK (for Manual seat) B
        OK (for Power seat) C
    2. A003WMIE01
      Text in Illustration
      *1 Seat Position Airbag Sensor
      *2 Airbag Sensor Assembly
      *3 Front Seat Inner Belt Assembly LH
      *4 Floor Wire
      *5 Connector C
      *a

      Front view of wire harness connector

      (to Front Seat Inner Belt Assembly LH)

      w/ Rear Pretensioner


      1. Disconnect the floor wire from the front seat inner belt assembly LH.

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

        Standard Resistance
        Tester Connection Condition Specified Condition
        P3-4 (LSP+) - Body ground Always 1 MΩ or higher
        P3-3 (LSP-) - Body ground Always 1 MΩ or higher
        Result
        Result Proceed to
        NG A
        OK (for Manual seat) B
        OK (for Power seat) C

    B

    REPLACE FRONT SEAT INNER BELT ASSEMBLY LH Click here

    C

    REPLACE FRONT SEAT INNER BELT ASSEMBLY LH Click here

    A

    REPLACE FLOOR WIRE

  13. CHECK CONNECTORS


    1. Turn the power switch off.

    2. 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.

    3. Check that the connectors are properly connected to the airbag sensor assembly, front seat inner belt assembly RH and seat position airbag sensor.

      OK
      The connectors are properly connected.

      Tech Tips

      If the connectors are not connected securely, reconnect the connectors and proceed to the next inspection.

    4. Disconnect the connectors from the airbag sensor assembly, front seat inner belt assembly RH and seat position airbag sensor.

    5. Check that the terminals of the connectors are not damaged.

      OK
      The terminals are not deformed or damaged.

    NG

    REPLACE WIRE HARNESS

    OK

  14. CHECK SEAT POSITION AIRBAG SENSOR CIRCUIT (OPEN)


    1. Connect the connectors to the front seat inner belt assembly RH and No. 2 floor wire.

      A003YR6E01

    2. Using SST, connect terminals 12 (RSP+) and 13 (RSP-) of connector B.

      Note

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

      SST
      09843-18040

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      2 (RSP+) - 1 (RSP-) Always Below 1 Ω
      Text in Illustration
      *1 Seat Position Airbag Sensor *2 Airbag Sensor Assembly
      *3 Connector B *4 Connector E
      *a

      Front view of wire harness connector

      (to Airbag Sensor Assembly)

      		 *b

      Front view of wire harness connector

      (to Seat Position Airbag Sensor)

    NG

    CHECK NO. 2 FLOOR WIRE (OPEN) Click here

    OK

  15. CHECK SEAT POSITION AIRBAG SENSOR CIRCUIT (SHORT)


    1. A003WF3E01
      Text in Illustration
      *1 Seat Position Airbag Sensor
      *2 Airbag Sensor Assembly
      *3 Connector E
      *a

      Front view of wire harness connector

      (to Seat Position Airbag Sensor)

      Disconnect SST from connector B.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      2 (RSP+) - 1 (RSP-) Always 1 MΩ or higher

    NG

    CHECK NO. 2 FLOOR WIRE (SHORT) Click here

    OK

  16. CHECK SEAT POSITION AIRBAG SENSOR CIRCUIT (SHORT TO B+)


    1. A003WF3E01
      Text in Illustration
      *1 Seat Position Airbag Sensor
      *2 Airbag Sensor Assembly
      *3 Connector E
      *a

      Front view of wire harness connector

      (to Seat Position Airbag Sensor)

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

    2. Turn the power switch on (IG).

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

      Standard Voltage
      Tester Connection Switch Condition Specified Condition
      2 (RSP+) - Body ground Power switch on (IG) Below 1 V
      1 (RSP-) - Body ground Power switch on (IG) Below 1 V

    NG

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

    OK

  17. CHECK SEAT POSITION AIRBAG SENSOR CIRCUIT (SHORT TO GROUND)


    1. A003WF3E01
      Text in Illustration
      *1 Seat Position Airbag Sensor
      *2 Airbag Sensor Assembly
      *3 Connector E
      *a

      Front view of wire harness connector

      (to Seat Position Airbag Sensor)

      Turn the power switch off.

    2. 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.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      2 (RSP+) - Body ground Always 1 MΩ or higher
      1 (RSP-) - Body ground Always 1 MΩ or higher

    NG

    CHECK NO. 2 FLOOR WIRE (SHORT TO GROUND) Click here

    OK

  18. CHECK DTC


    1. A003YY8E01
      Text in Illustration
      *1 Seat Position Airbag Sensor
      *2 Airbag Sensor Assembly

      Connect the connectors to the airbag sensor assembly and seat position airbag sensor.

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

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

    4. Clear the DTCs stored in memory Click here.

    5. Turn the power switch off.

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

    7. Check for DTCs Click here.

      OK
      DTC B1653/35 is not output.

      Tech Tips

      Codes other than DTC B1653/35 may be output at this time, but they are not related to this check.


    NG

    CHECK SEAT POSITION AIRBAG SENSOR Click here

    OK

    USE SIMULATION METHOD TO CHECK Click here

  19. CHECK SEAT POSITION AIRBAG SENSOR


    1. A003YY8E01
      Text in Illustration
      *1 Seat Position Airbag Sensor
      *2 Airbag Sensor Assembly

      Turn the power switch off.

    2. 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.

    3. Replace the seat position airbag sensor with a known good one Click here.

      Tech Tips

      Perform the following inspection using known good parts from another vehicle if possible.

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

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

    6. Clear the DTCs stored in memory Click here.

    7. Turn the power switch off.

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

    9. Check for DTCs Click here.

      OK
      DTC B1653/35 is not output.

      Tech Tips

      Codes other than DTC B1653/35 may be output at this time, but they are not related to this check.

    10. Turn the power switch off.

    11. 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.

    12. Restore the seat position airbag sensor that was installed for testing to its original location Click here.


    NG

    REPLACE AIRBAG SENSOR ASSEMBLY Click here

    OK

    REPLACE SEAT POSITION AIRBAG SENSOR Click here

  20. CHECK NO. 2 FLOOR WIRE (OPEN)


    1. Disconnect the No. 2 floor wire from the front seat inner belt assembly RH.

      A003W4WE01

      Tech Tips

      SST has already been inserted into connector B.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      Q19-4 (RSP+) - Q19-3 (RSP-) Always Below 1 Ω
      Result
      Result Proceed to
      NG A
      OK (for Manual seat) B
      OK (for Power seat) C

    3. Disconnect SST from connector B.

      Text in Illustration
      *1 Seat Position Airbag Sensor *2 Airbag Sensor Assembly
      *3 Front Seat Inner Belt Assembly RH *4 No. 2 Floor Wire
      *5 Connector B *6 Connector C
      *a

      Front view of wire harness connector

      (to Airbag Sensor Assembly)

      		 *b

      Front view of wire harness connector

      (to Front Seat Inner Belt Assembly RH)

    B

    REPLACE FRONT SEAT INNER BELT ASSEMBLY RH Click here

    C

    REPLACE FRONT SEAT INNER BELT ASSEMBLY RH Click here

    A

    REPLACE NO. 2 FLOOR WIRE

  21. CHECK NO. 2 FLOOR WIRE (SHORT)


    1. A003YL9E01
      Text in Illustration
      *1 Seat Position Airbag Sensor
      *2 Airbag Sensor Assembly
      *3 Front Seat Inner Belt Assembly RH
      *4 No. 2 Floor Wire
      *5 Connector C
      *a

      Front view of wire harness connector

      (to Front Seat Inner Belt Assembly RH)

      Disconnect the No. 2 floor wire from the front seat inner belt assembly RH.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      Q19-4 (RSP+) - Q19-3 (RSP-) Always 1 MΩ or higher
      Result
      Result Proceed to
      NG A
      OK (for Manual seat) B
      OK (for Power seat) C

    B

    REPLACE FRONT SEAT INNER BELT ASSEMBLY RH Click here

    C

    REPLACE FRONT SEAT INNER BELT ASSEMBLY RH Click here

    A

    REPLACE NO. 2 FLOOR WIRE

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


    1. A003YL9E01
      Text in Illustration
      *1 Seat Position Airbag Sensor
      *2 Airbag Sensor Assembly
      *3 Front Seat Inner Belt Assembly RH
      *4 No. 2 Floor Wire
      *5 Connector C
      *a

      Front view of wire harness connector

      (to Front Seat Inner Belt Assembly RH)

      Turn the power switch off.

    2. 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.

    3. Disconnect the No. 2 floor wire from the front seat inner belt assembly RH.

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

    5. Turn the power switch on (IG).

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

      Standard Voltage
      Tester Connection Switch Condition Specified Condition
      Q19-4 (RSP+) - Body ground Power switch on (IG) Below 1 V
      Q19-3 (RSP-) - Body ground Power switch on (IG) Below 1 V
      Result
      Result Proceed to
      NG A
      OK (for Manual seat) B
      OK (for Power seat) C

    B

    REPLACE FRONT SEAT INNER BELT ASSEMBLY RH Click here

    C

    REPLACE FRONT SEAT INNER BELT ASSEMBLY RH Click here

    A

    REPLACE NO. 2 FLOOR WIRE

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


    1. A003YL9E01
      Text in Illustration
      *1 Seat Position Airbag Sensor
      *2 Airbag Sensor Assembly
      *3 Front Seat Inner Belt Assembly RH
      *4 No. 2 Floor Wire
      *5 Connector C
      *a

      Front view of wire harness connector

      (to Front Seat Inner Belt Assembly RH)

      Disconnect the No. 2 floor wire from the front seat inner belt assembly RH.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      Q19-4 (RSP+) - Body ground Always 1 MΩ or higher
      Q19-3 (RSP-) - Body ground Always 1 MΩ or higher
      Result
      Result Proceed to
      NG A
      OK (for Manual seat) B
      OK (for Power seat) C

    B

    REPLACE FRONT SEAT INNER BELT ASSEMBLY RH Click here

    C

    REPLACE FRONT SEAT INNER BELT ASSEMBLY RH Click here

    A

    REPLACE NO. 2 FLOOR WIRE