AIRBAG SYSTEM, Diagnostic DTC:B1628/82

DTC Code DTC Name
B1628/82 Side Airbag Sensor Assembly LH Initialization Incomplete

DESCRIPTION

The side airbag sensor assembly LH is composed of a safing sensor, diagnostic circuit, lateral deceleration sensor, etc. When the airbag sensor assembly receives a signal from the lateral deceleration sensor, the airbag sensor assembly judges whether the SRS should be activated.If a malfunction is detected in the side satellite sensor bus circuit, the airbag sensor assembly stores DTC B1628/82.

DTC No. Detection Item DTC Detection Condition Trouble Area Test Mode / Check Mode
B1628/82 Side Airbag Sensor Assembly LH Initialization Incomplete

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

  • Side airbag sensor assembly LH malfunction

  • airbag sensor assembly malfunction

  • Floor wire

  • Front door wire LH

  • Side airbag sensor assembly LH

  • Airbag sensor assembly

 Does not apply to test/check mode

WIRING DIAGRAM

A01MHQWE04
*a Side Airbag Sensor Assembly LH
*b Door Side Airbag Sensor LH
*c Rear Airbag Sensor LH
*d Airbag Sensor Assembly

CAUTION / NOTICE / HINT

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

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

    Click here

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

    Click here

Tech Tips

To reproduce the DTC, wiggle each of the SRS airbag system connectors, or drive the vehicle on actual city roads or rough roads.

Click here

PROCEDURE


  1. CHECK HISTORY DTC


    1. Check for history DTCs.

      Click here


      Body Electrical > SRS Airbag > Trouble Codes
      Result
      Result Proceed to
      History DTC B1627/82 is output A
      History DTC B1627/82 is not output B

    A

    GO TO DTC B1627/82 Click here

    B

  2. CHECK DTC


    1. Turn the power switch off.

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

    3. Clear the DTCs stored in memory.

      Click here


      Body Electrical > SRS Airbag > Clear DTCs

    4. Turn the power switch off.

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

    6. Check for DTCs.

      Click here


      Body Electrical > SRS Airbag > Trouble Codes
      Result
      Result Proceed to
      DTC B1628/82 is output A
      DTC B1628/82 is not output B

      Tech Tips

      Codes other than DTC B1628/82 may be output at this time, but they are not related to this check.


    B

    USE SIMULATION METHOD TO CHECK Click here

    A

  3. CHECK CONNECTION OF CONNECTORS


    1. Turn the power switch off.

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

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

      OK
      The connectors are properly connected.
      Result
      Proceed to
      OK
      NG

    NG

    CONNECT CONNECTORS PROPERLY

    OK

  4. CHECK CONNECTORS


    1. A01MHJ9C01
      *1 Side Airbag Sensor Assembly LH
      *2 Airbag Sensor Assembly
      *3 Floor Wire

      Disconnect the connectors from the airbag sensor assembly and side airbag sensor assembly LH.

    2. Check that the terminals of the connectors are not deformed or damaged.

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

    NG

    REPLACE FLOOR WIRE

    OK

  5. CHECK SIDE AIRBAG SENSOR ASSEMBLY LH CIRCUIT


    1. A01MHN5C01
      *1 Side Airbag Sensor Assembly LH
      *2 Airbag Sensor Assembly
      *3 Floor Wire
      *a

      Front view of wire harness connector

      (to Side airbag sensor assembly LH)
      *b

      Rear view of wire harness connector

      (to Airbag Sensor Assembly)
      *c Service Wire

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

    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
      P3-4 (BBL+) - Body ground Power switch on (IG) Below 1 V
      P3-3 (BBL-) - Body ground Power switch on (IG) Below 1 V

    4. Turn the power switch off.

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

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

      Note

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

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      P3-4 (BBL+) - P3-3 (BBL-) Always Below 1 Ω

    8. Disconnect the service wire from connector B.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      P3-4 (BBL+) - P3-3 (BBL-) Always 1 MΩ or higher

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      P3- 4(BBL+) - Body ground Always 1 MΩ or higher
      P3-3 (BBL-) - Body ground Always 1 MΩ or higher
      Result
      Proceed to
      OK
      NG

    NG

    REPLACE FLOOR WIRE

    OK

  6. CHECK SIDE AIRBAG SENSOR ASSEMBLY LH


    1. A01MGM2C01
      *1 Side Airbag Sensor Assembly RH
      *2 Airbag Sensor Assembly

      Connect the connector to airbag sensor assembly.

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

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

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

    5. Clear the DTCs stored in memory.

      Click here


      Body Electrical > SRS Airbag > Clear DTCs

    6. Turn the power switch off.

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

    8. Check for DTCs.

      Click here


      Body Electrical > SRS Airbag > Trouble Codes
      Result
      Result Proceed to
      DTC B1623/81 is output A
      DTC B1628/82 is output B
      DTC B1623/81 and B1628/82 are not output C

      Tech Tips

      Codes other than DTCs B1623/81 and B1628/82 may be output at this time, but they are not related to this check.

    9. Turn the power switch off.

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

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


    A

    REPLACE SIDE AIRBAG SENSOR ASSEMBLY LH Click here

    C

    USE SIMULATION METHOD TO CHECK Click here

    B

  7. CHECK CONNECTION OF CONNECTORS


    1. Check that the connectors are properly connected to the rear airbag sensor assembly RH.

      OK
      The connectors are properly connected.
      Result
      Proceed to
      OK
      NG

    NG

    CONNECT CONNECTORS PROPERLY

    OK

  8. CHECK CONNECTORS


    1. A01MIJ9C01
      *1 Rear Airbag Sensor LH
      *2 Side Airbag Sensor Assembly LH
      *3 Floor Wire

      Disconnect the connectors from the side airbag sensor assembly LH and rear airbag sensor LH.

    2. Check that the terminals of the connectors are not deformed or damaged.

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

    NG

    REPLACE FLOOR WIRE

    OK

  9. CHECK REAR AIRBAG SENSOR LH CIRCUIT


    1. A01MI5KC03
      *1 Rear Airbag Sensor LH
      *2 Side Airbag Sensor Assembly LH
      *3 Floor Wire
      *a

      Front view of wire harness connector

      (to Rear Airbag Sensor LH)
      *b

      Front view of wire harness connector

      (to Side Airbag Sensor Assembly LH)
      *c Service Wire

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

    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
      P5-4 (BCL+) - Body ground Power switch on (IG) Below 1 V
      P5-3 (BCL-) - Body ground Power switch on (IG) Below 1 V

    4. Turn the power switch off.

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

    6. Using a service wire, connect terminals 1 (BCL+) - 2 (BCL-) of connector B.

      Note

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

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      P5-4 (BCL+) - P5-3 (BCL-) Always Below 1 Ω

    8. Disconnect the service wire from connector B.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      P5-4 (BCL+) - P5-3 (BCL-) Always 1 MΩ or higher

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      P5-4 (BCL+) - Body ground Always 1 MΩ or higher
      P5-3 (BCL-) - Body ground Always 1 MΩ or higher
      Result
      Proceed to
      OK
      NG

    NG

    REPLACE FLOOR WIRE

    OK

  10. CHECK CONNECTION OF CONNECTORS


    1. Check that the connectors are properly connected to the side airbag sensor assembly LH.

      OK
      The connectors are properly connected.
      Result
      Proceed to
      OK
      NG

    NG

    CONNECT CONNECTORS PROPERLY

    OK

  11. CHECK CONNECTORS


    1. A01MJLRC01
      *1 Door Side Airbag Sensor LH
      *2 Rear Airbag Sensor LH
      *3 Front Door Wire LH
      *4 Floor Wire

      Disconnect the connectors from the door side airbag sensor LH.

    2. Check that the terminals of the connectors are not deformed or damaged.

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

    NG

    REPLACE FRONT DOOR WIRE LH

    OK

  12. CHECK DOOR SIDE AIRBAG SENSOR LH CIRCUIT


    1. A01MJW4C02
      *1 Door Side Airbag Sensor LH
      *2 Rear Airbag Sensor LH
      *3 Front Door Wire LH
      *4 Floor Wire
      *a

      Front view of wire harness connector

      (to Door Side Airbag Sensor LH)
      *b

      Front view of wire harness connector

      (to Rear Airbag Sensor LH)
      *c Service Wire

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

    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
      L16-2 (BDL+) - Body ground Power switch on (IG) Below 1 V
      L16-1 (BDL-) - Body ground Power switch on (IG) Below 1 V

    4. Turn the power switch off.

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

    6. Using a service wire, connect terminals 1 (BDL+) - 2 (BDL-) of connector B.

      Note

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

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      L16-2 (BDL+) - L16-1 (BDL-) Always Below 1 Ω

    8. Disconnect the service wire from connector B.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      L16-2 (BDL+) - L16-1 (BDL-) Always 1 MΩ or higher

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      L16-2 (BDL+) - Body ground Always 1 MΩ or higher
      L16-1 (BDL-) - Body ground Always 1 MΩ or higher
      Result
      Proceed to
      OK
      NG

    OK

    REPLACE AIRBAG SENSOR ASSEMBLY Click here

    NG

  13. CHECK FLOOR WIRE


    1. A01MHWIC03
      *1 Door Side Airbag Sensor LH
      *2 Rear Airbag Sensor LH
      *3 Front Door Wire LH
      *4 Floor Wire
      *a

      Front view of wire harness connector

      (to Door Side Airbag Sensor LH)
      *b

      Front view of wire harness connector

      (to Rear Airbag Sensor LH)
      *c Service Wire

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

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

    3. Turn the power switch on (IG).

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

      Standard Voltage
      Tester Connection Switch Condition Specified Condition
      LP1-1 (BDL+) - Body ground Power switch on (IG) Below 1 V
      LP1-2 (BDL-) - Body ground Power switch on (IG) Below 1 V

    5. Turn the power switch off.

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

    7. Using a service wire, connect terminals 1 (BDL+) - 2 (BDL-) of connector B.

      Note

      Do not forcibly insert the 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
      Tester Connection Condition Specified Condition
      LP1-1 (BDL+) - LP1-2 (BDL-) 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
      Tester Connection Condition Specified Condition
      LP1-1 (BDL+) - LP1-2 (BDL-) Always 1 MΩ or higher

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      LP1-1 (BDL+) - Body ground Always 1 MΩ or higher
      LP1-2 (BDL-) - Body ground Always 1 MΩ or higher
      Result
      Proceed to
      OK
      NG

    OK

    REPLACE FRONT DOOR WIRE RH

    NG

    REPLACE FLOOR WIRE