AIRBAG SYSTEM, Diagnostic DTC:B1612/83, B1613/83

DTC Code DTC Name
B1612/83 Lost Communication with Front Airbag Sensor RH
B1613/83 Front Airbag Sensor RH Initialization Incomplete

DESCRIPTION

The front airbag sensor RH circuit consists of the center airbag sensor assembly and front airbag sensor RH.

The front airbag sensor RH detects impacts to the vehicle and sends signals to the center airbag sensor assembly to determine if the airbag should be deployed.

DTC B1612/83 or B1613/83 is recorded when a malfunction is detected in the front airbag sensor RH circuit.

DTC No. DTC Detection Condition Trouble Area

B1612/83

B1613/83

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 front airbag sensor RH circuit for 2 seconds.

  • Front airbag sensor RH malfunction

  • Center airbag sensor assembly malfunction

  • Instrument panel wire

  • Engine room main wire

  • Front airbag sensor RH

  • Center airbag sensor assembly

WIRING DIAGRAM

A01181CE17

INSPECTION PROCEDURE

PROCEDURE


  1. CHECK CONNECTION OF CONNECTORS


    1. Turn the ignition 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 center airbag sensor assembly and the front airbag sensor RH.

      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 front airbag sensor RH.

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

      OK
      The connectors are not deformed or damaged.

    NG

    REPLACE HARNESS AND CONNECTOR

    OK

  3. CHECK FRONT AIRBAG SENSOR RH CIRCUIT

    A0116WME05
    Text in Illustration
    *a

    Front view of wire harness connector

    (to Front Airbag Sensor RH)

    		 *b

    Rear view of wire harness connector

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

    1. Connect the cable to the negative battery terminal, 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
      Tester Connection Switch Condition Specified Condition
      A12-2 (+SR) - Body ground Ignition switch ON Below 1 V
      A12-1 (-SR) - Body ground Ignition switch ON Below 1 V

    4. Turn the ignition switch off.

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

    6. Using a service wire, connect terminals 29 (+SR) and 27 (-SR) of connector B.

      Note

      Do not forcibly insert a 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
      A12-2 (+SR) - A12-1 (-SR) 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
      A12-2 (+SR) - A12-1 (-SR) Always 1 MΩ or higher
      A12-2 (+SR) - Body ground Always 1 MΩ or higher
      A12-1 (-SR) - Body ground Always 1 MΩ or higher

    NG

    CHECK INSTRUMENT PANEL WIRE (CENTER AIRBAG SENSOR ASSEMBLY - ENGINE ROOM MAIN WIRE) Click here

    OK

  4. CHECK FRONT AIRBAG SENSOR RH

    A011BHPE13
    Text in Illustration
    *a Front Airbag Sensor LH
    *b Center Airbag Sensor Assembly

    1. Connect the connectors to the center airbag sensor assembly.

    2. Interchange the front airbag sensor RH with LH and connect the connectors to them.

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

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

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

    6. Turn the ignition switch off.

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

    8. Check for DTCs Click here.

      Result
      Result Proceed to
      DTC B1612/83, B1613/83, B1617/84 and B1618/84 are not output A
      DTC B1617/84 or B1618/84 is output B
      DTC B1612/83 or B1613/83 is output C

      Tech Tips

      DTCs other than B1612, B1613, B1617, B1618, 83 and 84 may be output at this time, but they are not related to this check.

    9. Turn the ignition switch off.

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

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


    A

    USE SIMULATION METHOD TO CHECK Click here

    B

    REPLACE FRONT AIRBAG SENSOR RH Click here

    C

    REPLACE CENTER AIRBAG SENSOR ASSEMBLY Click here

  5. CHECK INSTRUMENT PANEL WIRE (CENTER AIRBAG SENSOR ASSEMBLY - ENGINE ROOM MAIN WIRE)

    A011BH1E04
    Text in Illustration
    *a

    Front view of wire harness connector

    (to Engine Room Main Wire)

    		 *b

    Rear view of wire harness connector

    (to Center Airbag Sensor Assembly)
    *c Front Airbag Sensor RH *d Center Airbag Sensor Assembly
    *e Engine Room Main Wire *f Instrument Panel Wire
    *g Connector C *h Connector B
    *i Service Wire - -

    1. Disconnect the instrument panel wire connector from the engine room main wire.

    2. Connect the cable to the negative battery terminal, 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
      Tester Connection Switch Condition Specified Condition
      AD1-1 (+SR) - Body ground Ignition switch ON Below 1 V
      AD1-2 (-SR) - Body ground Ignition switch ON Below 1 V

    5. Turn the ignition switch off.

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

    7. Using a service wire, connect terminal 27 (-SR) and 29 (+SR) 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
      Tester Connection Condition Specified Condition
      AD1-1 (+SR) - AD1-2 (-SR) 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
      AD1-1 (+SR) - AD1-2 (-SR) Always 1 MΩ or higher
      AD1-1 (+SR) - Body ground Always 1 MΩ or higher
      AD1-2 (-SR) - Body ground Always 1 MΩ or higher

    NG

    REPLACE INSTRUMENT PANEL WIRE

    OK

    REPLACE ENGINE ROOM MAIN WIRE