AIRBAG SYSTEM Trouble in Passenger Airbag ON/OFF Indicator

DESCRIPTION

This circuit detects the airbag cut off switch cylinder sub-assembly status.

The passenger airbag ON/OFF indicator comes on to inform the front passenger airbag status (activated or deactivated).

Tech Tips

Approximately 6 seconds after the ignition switch is turned to ON, the passenger airbag ON/OFF indicator will indicate ON/OFF depending on the conditions listed below.

Airbag Cut Off Switch Cylinder Sub-assembly Passenger Airbag ON/OFF Indicator SRS Warning Light
ON Indicator OFF Indicator
ON ON OFF OFF
OFF OFF ON OFF
Switch failure OFF ON ON

WIRING DIAGRAM

A01TBTKE01
*a Airbag Cut Off Switch Cylinder Sub-assembly
*b Airbag Sensor Assembly

CAUTION / NOTICE / HINT

Note

After turning the ignition 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

PROCEDURE


  1. CHECK SRS WARNING LIGHT


    1. Turn the ignition switch to ON, and check the SRS warning light condition.

      OK
      After the primary check period, the SRS warning light goes off.

      Tech Tips


      • If the SRS warning light is on when this malfunction occurs, a DTC is stored. Troubleshoot for the stored DTC.

      • The primary check period is approximately 6 seconds after the ignition switch is turned to ON.

      Result
      Proceed to
      OK
      NG

    NG

    GO TO DIAGNOSTIC TROUBLE CODE CHART Click here

    OK

  2. CHECK CONNECTORS


    1. Turn the ignition switch off.

    2. Disconnect the cable from the negative (-) battery terminal.

      CAUTION:

      Wait at least 90 seconds after disconnecting the cable from the negative (-) battery terminal to disable the SRS system.

    3. Check that the connectors are properly connected to the airbag sensor assembly and airbag cut off switch cylinder sub-assembly.

      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 sensor assembly and airbag cut off switch cylinder sub-assembly.

    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 INSTRUMENT PANEL WIRE

    OK

  3. CHECK INSTRUMENT PANEL WIRE (OPEN)


    1. A01TCD3C01
      *1 Airbag Cut Off Switch Cylinder Sub-assembly
      *2 Airbag Sensor Assembly
      *3 Instrument Panel Wire
      *4 Service Wire
      *a

      Front view of wire harness connector

      (to Airbag Sensor Assembly)
      *b

      Front view of wire harness connector

      (to Airbag Cut Off Switch Cylinder Sub-assembly)

      Using a service wire, connect terminals 14 (MSW+) and 15 (MSW-) 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
      E86-2 (PMC+) - E86-1 (PMC-) Always Below 1 Ω

    3. Disconnect the service wire from connector B.

      Result
      Proceed to
      OK
      NG

    NG

    REPLACE INSTRUMENT PANEL WIRE

    OK

  4. CHECK INSTRUMENT PANEL WIRE (SHORT)


    1. A01TAXLC01
      *1 Airbag Cut Off Switch Cylinder Sub-assembly
      *2 Airbag Sensor Assembly
      *3 Instrument Panel Wire
      *a

      Front view of wire harness connector

      (to Airbag Cut Off Switch Cylinder Sub-assembly)

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      E86-2 (PMC+) - E86-1 (PMC-) Always 1 MΩ or higher
      Result
      Proceed to
      OK
      NG

    NG

    REPLACE INSTRUMENT PANEL WIRE

    OK

  5. CHECK INSTRUMENT PANEL WIRE (SHORT TO B+)


    1. A01TAXLC01
      *1 Airbag Cut Off Switch Cylinder Sub-assembly
      *2 Airbag Sensor Assembly
      *3 Instrument Panel Wire
      *a

      Front view of wire harness connector

      (to Airbag Cut Off Switch Cylinder Sub-assembly)

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

    2. Turn the ignition switch to ON.

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

      Standard Voltage
      Tester Connection Condition Specified Condition
      E86-2 (PMC+) - Body ground Ignition switch ON Below 1 V
      E86-1 (PMC-) - Body ground Ignition switch ON Below 1 V

    4. Turn the ignition switch off.

    5. Disconnect the cable from the negative (-) battery terminal.

      CAUTION:

      Wait at least 90 seconds after disconnecting the cable from the negative (-) battery terminal to disable the SRS system.

      Result
      Proceed to
      OK
      NG

    NG

    REPLACE INSTRUMENT PANEL WIRE

    OK

  6. CHECK INSTRUMENT PANEL WIRE (SHORT TO GROUND)


    1. A01TAXLC01
      *1 Airbag Cut Off Switch Cylinder Sub-assembly
      *2 Airbag Sensor Assembly
      *3 Instrument Panel Wire
      *a

      Front view of wire harness connector

      (to Airbag Cut Off Switch Cylinder Sub-assembly)

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      E86-2 (PMC+) - Body ground Always 1 MΩ or higher
      E86-1 (PMC-) - Body ground Always 1 MΩ or higher
      Result
      Proceed to
      OK
      NG

    NG

    REPLACE INSTRUMENT PANEL WIRE

    OK

  7. CHECK AIRBAG CUT OFF SWITCH CYLINDER SUB-ASSEMBLY


    1. A01T8XYC01
      *a

      Component without harness connected

      (Airbag Cut Off Switch Cylinder Sub-assembly)

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      E86-2 (PMC+) - E86-1 (PMC-) Cut off switch is ON 360 to 440 Ω
      E86-2 (PMC+) - E86-1 (PMC-) Cut off switch is OFF 90 to 110 Ω
      Result
      Proceed to
      OK
      NG

    OK

    REPLACE AIRBAG SENSOR ASSEMBLY Click here

    NG

    REPLACE AIRBAG CUT OFF SWITCH CYLINDER SUB-ASSEMBLY Click here