AIRBAG SYSTEM, Diagnostic DTC:B1622/81, B1623/81, B1632/81, B1633/81, B1642/81

DTC Code DTC Name
B1622/81 Lost communication with Side Airbag Sensor RH
B1623/81 Side Airbag Sensor Assembly RH Initialization Incomplete
B1632/81 Lost Communication with Rear Airbag Sensor RH
B1633/81 Rear Airbag Sensor Assembly RH Initialization Incomplete
B1642/81 Lost Communication with Side Satellite Sensor Bus RH

DESCRIPTION

The side collision sensor RH circuit (to determine deployment of the front seat airbag assembly RH, rear seat airbag assembly RH*, curtain shield airbag assembly RH and front seat outer belt assembly RH) is composed of the airbag ECU assembly, side airbag sensor assembly RH and rear airbag sensor RH.

The side airbag sensor assembly RH and rear airbag sensor RH detect impacts to the vehicle and send signals to the airbag ECU assembly to determine if the airbags and pretensioner should be deployed.

These DTCs are stored when a malfunction is detected in the side collision sensor RH circuit.

DTC No. Detection Item DTC Detection Condition Trouble Area Test Mode / Check Mode
B1622/81 Lost communication with Side Airbag Sensor RH

Any of the following conditions is met:


  • The airbag ECU assembly detects a line short, short to ground or B+, or an open in the side collision sensor RH circuit.

  • Side airbag sensor assembly RH malfunction

  • Rear airbag sensor RH malfunction

  • Airbag ECU assembly malfunction

  • Floor wire

  • Side airbag sensor assembly RH

  • Rear airbag sensor RH

  • Airbag ECU assembly

 Does not apply to test/check mode
B1623/81 Side Airbag Sensor Assembly RH Initialization Incomplete

Any of the following conditions is met:


  • The airbag ECU assembly detects a line short, short to ground or B+, or an open in the side collision sensor RH circuit.

  • Side airbag sensor assembly RH malfunction

  • Rear airbag sensor RH malfunction

  • Airbag ECU assembly malfunction

  • Floor wire

  • Side airbag sensor assembly RH

  • Rear airbag sensor RH

  • Airbag ECU assembly

 Does not apply to test/check mode
B1632/81 Lost Communication with Rear Airbag Sensor RH

Any of the following conditions is met:


  • The airbag ECU assembly detects a line short, short to ground or B+, or an open in the side collision sensor RH circuit.

  • Side airbag sensor assembly RH malfunction

  • Rear airbag sensor RH malfunction

  • Airbag ECU assembly malfunction

  • Floor wire

  • Side airbag sensor assembly RH

  • Rear airbag sensor RH

  • Airbag ECU assembly

 Does not apply to test/check mode
B1633/81 Rear Airbag Sensor Assembly RH Initialization Incomplete

Any of the following conditions is met:


  • The airbag ECU assembly detects a line short, short to ground or B+, or an open in the side collision sensor RH circuit.

  • Side airbag sensor assembly RH malfunction

  • Rear airbag sensor RH malfunction

  • Airbag ECU assembly malfunction

  • Floor wire

  • Side airbag sensor assembly RH

  • Rear airbag sensor RH

  • Airbag ECU assembly

 Does not apply to test/check mode
B1642/81 Lost Communication with Side Satellite Sensor Bus RH

Any of the following conditions is met:


  • The airbag ECU assembly detects a line short, short to ground or B+, or an open in the side collision sensor RH circuit.

  • Side airbag sensor assembly RH malfunction

  • Rear airbag sensor RH malfunction

  • Airbag ECU assembly malfunction

  • Floor wire

  • Side airbag sensor assembly RH

  • Rear airbag sensor RH

  • Airbag ECU assembly

 Does not apply to test/check mode
DTC Detection Conditions: B1622/81
Vehicle Condition
Pattern 1 Pattern 2 Pattern 3 Pattern 4
Diagnosis Condition - - - - -
Malfunction Status The airbag ECU assembly detects a line short, short to ground or B+, or an open in the side collision sensor RH circuit ○ - - -
Side airbag sensor assembly RH malfunction - ○ - -
Rear airbag sensor RH malfunction - - ○ -
Airbag ECU assembly malfunction - - - ○
Detection Time - - - -
Number of Trips 1 trip 1 trip 1 trip 1 trip

Tech Tips

DTC will be output when conditions for either of the patterns in the table above are met.

DTC Detection Conditions: B1623/81
Vehicle Condition
Pattern 1 Pattern 2 Pattern 3 Pattern 4
Diagnosis Condition - - - - -
Malfunction Status The airbag ECU assembly detects a line short, short to ground or B+, or an open in the side collision sensor RH circuit ○ - - -
Side airbag sensor assembly RH malfunction - ○ - -
Rear airbag sensor RH malfunction - - ○ -
Airbag ECU assembly malfunction - - - ○
Detection Time - - - -
Number of Trips 1 trip 1 trip 1 trip 1 trip

Tech Tips

DTC will be output when conditions for either of the patterns in the table above are met.

DTC Detection Conditions: B1632/81
Vehicle Condition
Pattern 1 Pattern 2 Pattern 3 Pattern 4
Diagnosis Condition - - - - -
Malfunction Status The airbag ECU assembly detects a line short, short to ground or B+, or an open in the side collision sensor RH circuit ○ - - -
Side airbag sensor assembly RH malfunction - ○ - -
Rear airbag sensor RH malfunction - - ○ -
Airbag ECU assembly malfunction - - - ○
Detection Time - - - -
Number of Trips 1 trip 1 trip 1 trip 1 trip

Tech Tips

DTC will be output when conditions for either of the patterns in the table above are met.

DTC Detection Conditions: B1633/81
Vehicle Condition
Pattern 1 Pattern 2 Pattern 3 Pattern 4
Diagnosis Condition - - - - -
Malfunction Status The airbag ECU assembly detects a line short, short to ground or B+, or an open in the side collision sensor RH circuit ○ - - -
Side airbag sensor assembly RH malfunction - ○ - -
Rear airbag sensor RH malfunction - - ○ -
Airbag ECU assembly malfunction - - - ○
Detection Time - - - -
Number of Trips 1 trip 1 trip 1 trip 1 trip

Tech Tips

DTC will be output when conditions for either of the patterns in the table above are met.

DTC Detection Conditions: B1642/81
Vehicle Condition
Pattern 1 Pattern 2 Pattern 3 Pattern 4
Diagnosis Condition - - - - -
Malfunction Status The airbag ECU assembly detects a line short, short to ground or B+, or an open in the side collision sensor RH circuit ○ - - -
Side airbag sensor assembly RH malfunction - ○ - -
Rear airbag sensor RH malfunction - - ○ -
Airbag ECU assembly malfunction - - - ○
Detection Time - - - -
Number of Trips 1 trip 1 trip 1 trip 1 trip

Tech Tips

DTC will be output when conditions for either of the patterns in the table above are met.

WIRING DIAGRAM

B002DEEE78
*a Rear Airbag Sensor RH
*b Side Airbag Sensor Assembly RH
*c Airbag ECU Assembly

CAUTION / NOTICE / HINT

Note


  • After turning the engine switch off, waiting time may be required before disconnecting the cable from the negative (-) battery terminal. Therefore, make sure to read the disconnecting the cable from the negative (-) battery terminal notices before proceeding with work.

    Click here

  • When disconnecting the cable from the negative (-) battery terminal while performing repairs, some systems need to be initialized after the cable is reconnected.

    Click here

  • After replacing the airbag ECU assembly, refer to initialization.

    Click here

PROCEDURE


  1. CHECK CURRENT DTC


    1. Check for current DTCs.

      Click here


      Body Electrical > SRS Airbag > Trouble Codes

      Tech Tips


      • DTCs indicating communication errors will be changed to DTCs indicating errors in initialization by turning the engine switch off and then on (IG) again.

      • Codes other than current DTCs B1622, B1623, B1632, B1633, B1642 and 81 may be output at this time, but they are not related to this check.

      Result
      Result Proceed to
      Current DTC B1642 or 81 is output. A
      Current DTC B1633 is output. B
      Current DTC B1622 or B1623 is output. C
      Current DTC B1632 is output. D
      Current DTCs B1622, B1623, B1632, B1633, B1642 and 81 are not output. E

    B

    CHECK HISTORY DTC Click here

    C

    CHECK CONNECTORS Click here

    D

    CHECK REAR AIRBAG SENSOR RH Click here

    E

    USE SIMULATION METHOD TO CHECK Click here

    A

  2. CHECK CONNECTORS


    1. Turn the engine switch off.

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

    3. Check that the connectors are properly connected to the airbag ECU assembly, side airbag sensor assembly RH and rear airbag sensor RH.

      OK
      The connectors are properly connected.

      Tech Tips

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

    4. Disconnect the connectors from the airbag ECU assembly, side airbag sensor assembly RH and rear airbag sensor RH.

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

      OK
      The terminals are not deformed or damaged.
      Result
      Proceed to
      OK
      NG

    NG

    REPLACE FLOOR WIRE

    OK

  3. CHECK FLOOR WIRE (OPEN)


    1. B002DMKC19
      *1 Rear Airbag Sensor RH
      *2 Airbag ECU Assembly
      *3 Floor Wire
      *4 Service Wire
      *a

      Front view of wire harness connector

      (to Airbag ECU Assembly)
      *b

      Front view of wire harness connector

      (to Rear Airbag Sensor RH)

      Using a service wire, connect terminals 24 (BBR+) and 23 (BBR-) of connector B.

      Note

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

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      T5-4 (BCR+) - T5-3 (BCR-) Always Below 1 Ω

    3. Disconnect the service wire from connector B.

      Result
      Proceed to
      OK
      NG

    NG

    REPLACE FLOOR WIRE

    OK

  4. CHECK FLOOR WIRE (SHORT)


    1. B002EQHC21
      *1 Rear Airbag Sensor RH
      *2 Airbag ECU Assembly
      *3 Floor Wire
      *a

      Front view of wire harness connector

      (to Rear Airbag Sensor RH)

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      T5-4 (BCR+) - T5-3 (BCR-) Always 1 MΩ or higher
      Result
      Proceed to
      OK
      NG

    NG

    REPLACE FLOOR WIRE

    OK

  5. CHECK FLOOR WIRE (SHORT TO B+)


    1. B002EQHC21
      *1 Rear Airbag Sensor RH
      *2 Airbag ECU Assembly
      *3 Floor Wire
      *a

      Front view of wire harness connector

      (to Rear Airbag Sensor RH)

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

    2. Turn the engine switch on (IG).

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

      Standard Voltage
      Tester Connection Switch Condition Specified Condition
      T5-4 (BCR+) - Body ground Engine switch on (IG) Below 1 V
      T5-3 (BCR-) - Body ground Engine switch on (IG) Below 1 V

    4. Turn the engine switch off.

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

      Result
      Proceed to
      OK
      NG

    NG

    REPLACE FLOOR WIRE

    OK

  6. CHECK FLOOR WIRE (SHORT TO GROUND)


    1. B002EQHC21
      *1 Rear Airbag Sensor RH
      *2 Airbag ECU Assembly
      *3 Floor Wire
      *a

      Front view of wire harness connector

      (to Rear Airbag Sensor RH)

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      T5-4 (BCR+) - Body ground Always 1 MΩ or higher
      T5-3 (BCR-) - Body ground Always 1 MΩ or higher
      Result
      Proceed to
      OK
      NG

    NG

    REPLACE FLOOR WIRE

    OK

  7. CHECK FLOOR WIRE (OPEN)


    1. B002C8LC18
      *1 Side Airbag Sensor Assembly RH
      *2 Rear Airbag Sensor RH
      *3 Floor Wire
      *4 Service Wire
      *a

      Front view of wire harness connector

      (to Rear Airbag Sensor RH)
      *b

      Front view of wire harness connector

      (to Side Airbag Sensor Assembly RH)

      Using a service wire, connect terminals 2 (BBR+) and 1 (BBR-) of connector C.

      Note

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

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      T5-1 (BBR+) - T5-2 (BBR-) Always Below 1 Ω

    3. Disconnect the service wire from connector C.

      Result
      Proceed to
      OK
      NG

    NG

    REPLACE FLOOR WIRE

    OK

  8. CHECK FLOOR WIRE (SHORT)


    1. B002D4GC70
      *1 Side Airbag Sensor Assembly RH
      *2 Rear Airbag Sensor RH
      *3 Floor Wire
      *a

      Front view of wire harness connector

      (to Rear Airbag Sensor RH)

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      T5-1 (BBR+) - T5-2 (BBR-) Always 1 MΩ or higher
      Result
      Proceed to
      OK
      NG

    NG

    REPLACE FLOOR WIRE

    OK

  9. CHECK FLOOR WIRE (SHORT TO B+)


    1. B002D4GC70
      *1 Side Airbag Sensor Assembly RH
      *2 Rear Airbag Sensor RH
      *3 Floor Wire
      *a

      Front view of wire harness connector

      (to Rear Airbag Sensor RH)

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

    2. Turn the engine switch on (IG).

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

      Standard Voltage
      Tester Connection Switch Condition Specified Condition
      T5-1 (BBR+) - Body ground Engine switch on (IG) Below 1 V
      T5-2 (BBR-) - Body ground Engine switch on (IG) Below 1 V

    4. Turn the engine switch off.

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

      Result
      Proceed to
      OK
      NG

    NG

    REPLACE FLOOR WIRE

    OK

  10. CHECK FLOOR WIRE (SHORT TO GROUND)


    1. B002D4GC70
      *1 Side Airbag Sensor Assembly RH
      *2 Rear Airbag Sensor RH
      *3 Floor Wire
      *a

      Front view of wire harness connector

      (to Rear Airbag Sensor RH)

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      T5-1 (BBR+) - Body ground Always 1 MΩ or higher
      T5-2 (BBR-) - Body ground Always 1 MΩ or higher
      Result
      Proceed to
      OK
      NG

    NG

    REPLACE FLOOR WIRE

    OK

  11. CHECK REAR AIRBAG SENSOR RH


    1. B002CW7C03
      *1 Rear Airbag Sensor LH
      *2 Airbag ECU Assembly

      Connect the connectors to the side airbag sensor assembly RH and airbag ECU assembly.

    2. Interchange the rear airbag sensor RH with LH and connect the connectors.

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

    4. Clear the DTCs stored in memory.

      Click here


      Body Electrical > SRS Airbag > Clear DTCs

    5. Turn the engine switch off.

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

    7. Check for DTCs.

      Click here


      Body Electrical > SRS Airbag > Trouble Codes

      Tech Tips

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

      Result
      Result Proceed to
      DTC B1642 or 81 is output. A
      DTC B1647 or 82 is output. B
      DTCs B1642, B1647, 81 and 82 are not output. C

    8. Turn the engine switch off.

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

    10. Return the rear airbag sensor RH and LH to their original positions and connect the connectors.


    B

    REPLACE REAR AIRBAG SENSOR RH Click here

    C

    USE SIMULATION METHOD TO CHECK Click here

    A

  12. CHECK SIDE AIRBAG SENSOR ASSEMBLY RH


    1. B002D2VC04
      *1 Side Airbag Sensor Assembly LH
      *2 Rear Airbag Sensor RH

      Interchange the side airbag sensor assembly RH with LH and connect the connectors.

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

    3. Clear the DTCs stored in memory.

      Click here


      Body Electrical > SRS Airbag > Clear DTCs

    4. Turn the engine switch off.

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

    6. Check for DTCs.

      Click here


      Body Electrical > SRS Airbag > Trouble Codes

      Tech Tips

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

      Result
      Result Proceed to
      DTC B1642 or 81 is output. A
      DTC B1647 or 82 is output. B
      DTCs B1642, B1647, 81 and 82 are not output. C

    7. Turn the engine switch off.

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

    9. Return the side airbag sensor assembly RH and LH to their original positions and connect the connectors.


    A

    REPLACE AIRBAG ECU ASSEMBLY Click here

    B

    REPLACE SIDE AIRBAG SENSOR ASSEMBLY RH Click here

    C

    USE SIMULATION METHOD TO CHECK Click here

  13. CHECK HISTORY DTC


    1. Check for history DTCs.

      Click here


      Body Electrical > SRS Airbag > Trouble Codes

      Tech Tips

      Codes other than history DTC B1632 may be output at this time, but they are not related to this check.

      Result
      Result Proceed to
      History DTC B1632 is not output. A
      History DTC B1632 is output. B

    B

    CHECK REAR AIRBAG SENSOR RH Click here

    A

  14. CHECK CONNECTORS


    1. Turn the engine switch off.

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

    3. Check that the connectors are properly connected to the airbag ECU assembly and rear airbag sensor RH.

      OK
      The connectors are properly connected.

      Tech Tips

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

    4. Disconnect the connectors from the airbag ECU assembly and rear airbag sensor RH.

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

      OK
      The terminals are not deformed or damaged.
      Result
      Proceed to
      OK
      NG

    NG

    REPLACE FLOOR WIRE

    OK

  15. CHECK FLOOR WIRE (OPEN)


    1. B002DMKC19
      *1 Rear Airbag Sensor RH
      *2 Airbag ECU Assembly
      *3 Floor Wire
      *4 Service Wire
      *a

      Front view of wire harness connector

      (to Airbag ECU Assembly)
      *b

      Front view of wire harness connector

      (to Rear Airbag Sensor RH)

      Using a service wire, connect terminals 24 (BBR+) and 23 (BBR-) of connector B.

      Note

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

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      T5-4 (BCR+) - T5-3 (BCR-) Always Below 1 Ω

    3. Disconnect the service wire from connector B.

      Result
      Proceed to
      OK
      NG

    NG

    REPLACE FLOOR WIRE

    OK

  16. CHECK FLOOR WIRE (SHORT)


    1. B002EQHC21
      *1 Rear Airbag Sensor RH
      *2 Airbag ECU Assembly
      *3 Floor Wire
      *a

      Front view of wire harness connector

      (to Rear Airbag Sensor RH)

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      T5-4 (BCR+) - T5-3 (BCR-) Always 1 MΩ or higher
      Result
      Proceed to
      OK
      NG

    NG

    REPLACE FLOOR WIRE

    OK

  17. CHECK FLOOR WIRE (SHORT TO B+)


    1. B002EQHC21
      *1 Rear Airbag Sensor RH
      *2 Airbag ECU Assembly
      *3 Floor Wire
      *a

      Front view of wire harness connector

      (to Rear Airbag Sensor RH)

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

    2. Turn the engine switch on (IG).

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

      Standard Voltage
      Tester Connection Switch Condition Specified Condition
      T5-4 (BCR+) - Body ground Engine switch on (IG) Below 1 V
      T5-3 (BCR-) - Body ground Engine switch on (IG) Below 1 V

    4. Turn the engine switch off.

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

      Result
      Proceed to
      OK
      NG

    NG

    REPLACE FLOOR WIRE

    OK

  18. CHECK FLOOR WIRE (SHORT TO GROUND)


    1. B002EQHC21
      *1 Rear Airbag Sensor RH
      *2 Airbag ECU Assembly
      *3 Floor Wire
      *a

      Front view of wire harness connector

      (to Rear Airbag Sensor RH)

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      T5-4 (BCR+) - Body ground Always 1 MΩ or higher
      T5-3 (BCR-) - Body ground Always 1 MΩ or higher
      Result
      Proceed to
      OK
      NG

    NG

    REPLACE FLOOR WIRE

    OK

  19. CHECK REAR AIRBAG SENSOR RH


    1. B002CW7C03
      *1 Rear Airbag Sensor LH
      *2 Airbag ECU Assembly

      Connect the connector to the airbag ECU assembly.

    2. Interchange the rear airbag sensor RH with LH and connect the connectors.

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

    4. Clear the DTCs stored in memory.

      Click here


      Body Electrical > SRS Airbag > Clear DTCs

    5. Turn the engine switch off.

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

    7. Check for DTCs.

      Click here


      Body Electrical > SRS Airbag > Trouble Codes

      Tech Tips

      Codes other than DTCs B1633 and B1638 may be output at this time, but they are not related to this check.

      Result
      Result Proceed to
      DTC B1633 is output. A
      DTC B1638 is output. B
      DTCs B1633 and B1638 are not output. C

    8. Turn the engine switch off.

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

    10. Return the rear airbag sensor RH and LH to their original positions and connect the connectors.


    A

    REPLACE AIRBAG ECU ASSEMBLY Click here

    B

    REPLACE REAR AIRBAG SENSOR RH Click here

    C

    USE SIMULATION METHOD TO CHECK Click here

  20. CHECK REAR AIRBAG SENSOR RH


    1. B002CW7C03
      *1 Rear Airbag Sensor LH
      *2 Airbag ECU Assembly

      Turn the engine switch off.

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

    3. Interchange the rear airbag sensor RH with LH and connect the connectors.

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

    5. Clear the DTCs stored in memory.

      Click here


      Body Electrical > SRS Airbag > Clear DTCs

    6. Turn the engine switch off.

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

    8. Check for DTCs.

      Click here


      Body Electrical > SRS Airbag > Trouble Codes

      Tech Tips

      Codes other than DTCs B1632 and B1637 may be output at this time, but they are not related to this check.

      Result
      Result Proceed to
      DTC B1632 is output. A
      DTC B1637 is output. B
      DTCs B1632 and B1637 are not output. C

    9. Turn the engine switch off.

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

    11. Return the rear airbag sensor RH and LH to their original positions and connect the connectors.


    A

    REPLACE AIRBAG ECU ASSEMBLY Click here

    B

    REPLACE REAR AIRBAG SENSOR RH Click here

    C

    USE SIMULATION METHOD TO CHECK Click here

  21. CHECK CONNECTORS


    1. Turn the engine switch off.

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

    3. Check that the connectors are properly connected to the side airbag sensor assembly RH and rear airbag sensor RH.

      OK
      The connectors are properly connected.

      Tech Tips

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

    4. Disconnect the connectors from the side airbag sensor assembly RH and rear airbag sensor RH.

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

      OK
      The terminals are not deformed or damaged.
      Result
      Proceed to
      OK
      NG

    NG

    REPLACE FLOOR WIRE

    OK

  22. CHECK FLOOR WIRE (OPEN)


    1. B002C8LC18
      *1 Side Airbag Sensor Assembly RH
      *2 Rear Airbag Sensor RH
      *3 Floor Wire
      *4 Service Wire
      *a

      Front view of wire harness connector

      (to Rear Airbag Sensor RH)
      *b

      Front view of wire harness connector

      (to Side Airbag Sensor Assembly RH)

      Using a service wire, connect terminals 2 (BBR+) and 1 (BBR-) of connector C.

      Note

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

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      T5-1 (BBR+) - T5-2 (BBR-) Always Below 1 Ω

    3. Disconnect the service wire from connector C.

      Result
      Proceed to
      OK
      NG

    NG

    REPLACE FLOOR WIRE

    OK

  23. CHECK FLOOR WIRE (SHORT)


    1. B002D4GC70
      *1 Side Airbag Sensor Assembly RH
      *2 Rear Airbag Sensor RH
      *3 Floor Wire
      *a

      Front view of wire harness connector

      (to Rear Airbag Sensor RH)

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      T5-1 (BBR+) - T5-2 (BBR-) Always 1 MΩ or higher
      Result
      Proceed to
      OK
      NG

    NG

    REPLACE FLOOR WIRE

    OK

  24. CHECK FLOOR WIRE (SHORT TO B+)


    1. B002D4GC70
      *1 Side Airbag Sensor Assembly RH
      *2 Rear Airbag Sensor RH
      *3 Floor Wire
      *a

      Front view of wire harness connector

      (to Rear Airbag Sensor RH)

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

    2. Turn the engine switch on (IG).

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

      Standard Voltage
      Tester Connection Switch Condition Specified Condition
      T5-1 (BBR+) - Body ground Engine switch on (IG) Below 1 V
      T5-2 (BBR-) - Body ground Engine switch on (IG) Below 1 V

    4. Turn the engine switch off.

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

      Result
      Proceed to
      OK
      NG

    NG

    REPLACE FLOOR WIRE

    OK

  25. CHECK FLOOR WIRE (SHORT TO GROUND)


    1. B002D4GC70
      *1 Side Airbag Sensor Assembly RH
      *2 Rear Airbag Sensor RH
      *3 Floor Wire
      *a

      Front view of wire harness connector

      (to Rear Airbag Sensor RH)

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      T5-1 (BBR+) - Body ground Always 1 MΩ or higher
      T5-2 (BBR-) - Body ground Always 1 MΩ or higher
      Result
      Proceed to
      OK
      NG

    NG

    REPLACE FLOOR WIRE

    OK

  26. CHECK REAR AIRBAG SENSOR RH


    1. B002CW7C03
      *1 Rear Airbag Sensor LH
      *2 Airbag ECU Assembly

      Connect the connector to the side airbag sensor assembly RH.

    2. Interchange the rear airbag sensor RH with LH and connect the connectors.

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

    4. Clear the DTCs stored in memory.

      Click here


      Body Electrical > SRS Airbag > Clear DTCs

    5. Turn the engine switch off.

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

    7. Check for DTCs.

      Click here


      Body Electrical > SRS Airbag > Trouble Codes

      Tech Tips

      Codes other than DTCs B1622, B1623, B1627 and B1628 may be output at this time, but they are not related to this check.

      Result
      Result Proceed to
      DTC B1622 or B1623 is output. A
      DTC B1627 or B1628 is output. B
      DTCs B1622, B1623, B1627 and B1628 are not output. C

    8. Turn the engine switch off.

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

    10. Return the rear airbag sensor RH and LH to their original positions and connect the connectors.


    B

    REPLACE REAR AIRBAG SENSOR RH Click here

    C

    USE SIMULATION METHOD TO CHECK Click here

    A

  27. CHECK SIDE AIRBAG SENSOR ASSEMBLY RH


    1. B002D2VC04
      *1 Side Airbag Sensor Assembly LH
      *2 Rear Airbag Sensor RH

      Interchange the side airbag sensor assembly RH with LH and connect the connectors.

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

    3. Clear the DTCs stored in memory.

      Click here


      Body Electrical > SRS Airbag > Clear DTCs

    4. Turn the engine switch off.

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

    6. Check for DTCs.

      Click here


      Body Electrical > SRS Airbag > Trouble Codes

      Tech Tips

      Codes other than DTCs B1622, B1623, B1627 and B1628 may be output at this time, but they are not related to this check.

      Result
      Result Proceed to
      DTC B1622 or B1623 is output. A
      DTC B1627 or B1628 is output. B
      DTCs B1622, B1623, B1627 and B1628 are not output. C

    7. Turn the engine switch off.

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

    9. Return the side airbag sensor assembly RH and LH to their original positions and connect the connectors.


    A

    REPLACE AIRBAG ECU ASSEMBLY Click here

    B

    REPLACE SIDE AIRBAG SENSOR ASSEMBLY RH Click here

    C

    USE SIMULATION METHOD TO CHECK Click here

  28. CHECK REAR AIRBAG SENSOR RH


    1. B002CW7C03
      *1 Rear Airbag Sensor LH
      *2 Airbag ECU Assembly

      Turn the engine switch off.

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

    3. Interchange the rear airbag sensor RH with LH and connect the connectors.

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

    5. Clear the DTCs stored in memory.

      Click here


      Body Electrical > SRS Airbag > Clear DTCs

    6. Turn the engine switch off.

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

    8. Check for DTCs.

      Click here


      Body Electrical > SRS Airbag > Trouble Codes

      Tech Tips

      Codes other than DTCs B1632 and B1637 may be output at this time, but they are not related to this check.

      Result
      Result Proceed to
      DTC B1632 is output. A
      DTC B1637 is output. B
      DTCs B1632 and B1637 are not output. C

    9. Turn the engine switch off.

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

    11. Return the rear airbag sensor RH and LH to their original positions and connect the connectors.


    A

    REPLACE AIRBAG ECU ASSEMBLY Click here

    B

    REPLACE REAR AIRBAG SENSOR RH Click here

    C

    USE SIMULATION METHOD TO CHECK Click here