AIRBAG SYSTEM, Diagnostic DTC:B1660

DTC Code DTC Name
B1660 P Seat Airbag Active Mode Indicator

DESCRIPTION

The passenger airbag ON/OFF indicator circuit consists of the airbag sensor assembly and passenger airbag ON/OFF indicator (telltale light assembly).

The passenger airbag ON/OFF indicator indicates the operation condition of the instrument panel passenger airbag assembly and lower No. 2 instrument panel airbag assembly.

DTC B1660 is stored when a malfunction is detected in the passenger airbag ON/OFF indicator circuit.

DTC No. Detection Item DTC Detection Condition Trouble Area Warning Indicate Test Mode / Check Mode
B1660 P Seat Airbag Active Mode Indicator

  • The airbag sensor assembly detects a line short, short to ground or B+, or an open in the passenger airbag ON/OFF indicator circuit.

  • Passenger airbag ON/OFF indicator malfunction

  • Airbag sensor assembly malfunction

  • Instrument panel wire

  • Instrument panel junction block assembly

  • Passenger airbag ON/OFF indicator (Telltale light assembly)

  • Airbag sensor assembly

 Comes on Does not apply to test/check mode

WIRING DIAGRAM

B0086VSE03

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

  • Inspect the fuses for circuits related to this system before performing the following procedure.

PROCEDURE


  1. CHECK PASSENGER AIRBAG ON/OFF INDICATOR CONDITION


    1. Turn the ignition switch to ON.

    2. Check the passenger airbag ON/OFF indicator operation.

      Tech Tips

      Refer to the normal condition of the passenger airbag ON/OFF indicator.

      Click here

      Result
      Result Proceed to
      Passenger airbag ON/OFF indicator illumination is always on. A
      Passenger airbag ON/OFF indicator illumination is always off. B

    B

    CHECK CONNECTION OF CONNECTORS Click here

    A

  2. CHECK CONNECTION OF 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, telltale light assembly and instrument panel junction block assembly.

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

    NG

    CONNECT CONNECTORS PROPERLY

    OK

  3. CHECK CONNECTORS


    1. Disconnect the connectors from the airbag sensor assembly, telltale light assembly and instrument panel junction block assembly.

    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 INSTRUMENT PANEL WIRE

    OK

  4. CHECK PASSENGER AIRBAG ON/OFF INDICATOR CONDITION


    1. Connect the connector to the telltale light assembly and instrument panel junction block assembly.

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

    3. Turn the ignition switch to ON.

    4. Check the passenger airbag ON/OFF indicator operation.

      OK
      The passenger airbag ON/OFF indicator does not come on.
      Result
      Proceed to
      OK
      NG

    NG

    CHECK WIRE HARNESS Click here

    OK

  5. CHECK DTC


    1. B0084TTC01
      *1 Instrument Panel Junction Block Assembly
      *2 Airbag Sensor Assembly
      *3 Telltale Light Assembly

      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. Connect the connector to the airbag sensor assembly.

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

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

    6. Clear the DTCs stored in memory.


      Body Electrical > SRS Airbag > Clear DTCs

    7. Turn the ignition switch off.

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

    9. Check for DTCs.


      Body Electrical > SRS Airbag > Trouble Codes
      OK
      DTC B1660 is not output.

      Tech Tips

      Codes other than DTC B1660 may be output at this time, but they are not related to this check.

      Result
      Proceed to
      OK
      NG

    OK

    USE SIMULATION METHOD TO CHECK Click here

    NG

    REPLACE AIRBAG SENSOR ASSEMBLY Click here

  6. CHECK WIRE HARNESS


    1. B00856UC01
      *1 Instrument Panel Junction Block Assembly
      *2 Airbag Sensor Assembly
      *3 Telltale Light Assembly
      *4 Instrument Panel Wire
      *5 Service Wire
      *a

      Front view of wire harness connector

      (to Airbag Sensor Assembly)
      *b

      Front view of wire harness connector

      (to Telltale Light Assembly)

      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. Disconnect the connector from the telltale light assembly.

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

    5. Turn the ignition switch to ON.

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

      Standard Voltage
      Tester Connection Condition Specified Condition
      K36-5 (PAON) - Body ground Ignition switch ON Below 1 V
      K36-4 (P-AB) - Body ground Ignition switch ON Below 1 V

    7. Turn the ignition switch off.

    8. 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.

    9. Using a service wire, connect terminals 35 (PAON) and 34 (P-AB) of connector B.

      Note

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

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      K36-5 (PAON) - K36-4 (P-AB) Always Below 1 Ω

    11. Disconnect the service wire from connector B.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      K36-5 (PAON) - K36-4 (P-AB) Always 1 MΩ or higher
      K36-5 (PAON) - Body ground Always 1 MΩ or higher
      K36-4 (P-AB) - Body ground Always 1 MΩ or higher
      Result
      Proceed to
      OK
      NG

    OK

    REPLACE TELLTALE LIGHT ASSEMBLY Click here

    NG

  7. CHECK INSTRUMENT PANEL WIRE


    1. Disconnect the connector from the instrument panel junction block assembly.

      B0086U7C01
      *1 Instrument Panel Junction Block Assembly *2 Airbag Sensor Assembly
      *3 Telltale Light Assembly *4 Instrument Panel Wire
      *5 Service Wire - -
      *a

      Front view of wire harness connector

      (to Instrument Panel Junction Block Assembly)

      		 *b

      Front view of wire harness connector

      (to Airbag Sensor Assembly)
      *c

      Front view of wire harness connector

      (to Telltale Light Assembly)

      		 - -

    2. Using a service wire, connect terminals 35 (PAON) and 34 (P-AB) of connector B.

      Note

      Do not forcibly insert the service wire 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
      3A-8 (PAON) - 3A-46 (P-AB) Always Below 1 Ω

    4. Disconnect the service wire from connector B.

    5. Using a service wire, connect terminals 5 (PAON) and 4 (P-AB) of connector E.

      Note

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

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      3A-29 (PAON) - 3A-51 (P-AB) Always Below 1 Ω

    7. Disconnect the service wire from connector E.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      3A-8 (PAON) - Body ground or other terminals Always 1 MΩ or higher
      3A-29 (PAON) - Body ground or other terminals Always 1 MΩ or higher
      3A-46 (P-AB) - Body ground or other terminals Always 1 MΩ or higher
      3A-51 (P-AB) - Body ground or other terminals Always 1 MΩ or higher
      Result
      Proceed to
      OK
      NG

    OK

    REPLACE INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY

    NG

    REPLACE INSTRUMENT PANEL WIRE

  8. CHECK CONNECTION OF 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, telltale light assembly and instrument panel junction block assembly.

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

    NG

    CONNECT CONNECTORS PROPERLY

    OK

  9. CHECK CONNECTORS


    1. Disconnect the connectors from the airbag sensor assembly, telltale light assembly and instrument panel junction block assembly.

    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 INSTRUMENT PANEL WIRE

    OK

  10. CHECK WIRE HARNESS


    1. B00856UC01
      *1 Instrument Panel Junction Block Assembly
      *2 Airbag Sensor Assembly
      *3 Telltale Light Assembly
      *4 Instrument Panel Wire
      *5 Service Wire
      *a

      Front view of wire harness connector

      (to Airbag Sensor Assembly)
      *b

      Front view of wire harness connector

      (to Telltale Light Assembly)

      Connect the connector to the instrument panel junction block assembly.

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

    3. Turn the ignition switch to ON.

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

      Standard Voltage
      Tester Connection Condition Specified Condition
      K36-5 (PAON) - Body ground Ignition switch ON Below 1 V
      K36-4 (P-AB) - Body ground Ignition switch ON Below 1 V

    5. Turn the ignition switch off.

    6. 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.

    7. Using a service wire, connect terminals 35 (PAON) and 34 (P-AB) 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
      K36-5 (PAON) - K36-4 (P-AB) 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
      K36-5 (PAON) - K36-4 (P-AB) Always 1 MΩ or higher
      K36-5 (PAON) - Body ground Always 1 MΩ or higher
      K36-4 (P-AB) - Body ground Always 1 MΩ or higher
      Result
      Proceed to
      OK
      NG

    NG

    CHECK INSTRUMENT PANEL WIRE Click here

    OK

  11. CHECK PASSENGER AIRBAG ON/OFF INDICATOR (SOURCE VOLTAGE)


    1. B0083JWC02
      *1 Instrument Panel Junction Block Assembly
      *2 Airbag Sensor Assembly
      *3 Telltale Light Assembly
      *4 Instrument Panel Wire
      *a

      Front view of wire harness connector

      (to Telltale Light 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
      K36-10 (IG+) - Body ground Ignition switch ON 11 to 14 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 WIRE HARNESS OR BATTERY

    OK

  12. CHECK PASSENGER AIRBAG ON/OFF INDICATOR


    1. B008888C01
      *1 Instrument Panel Junction Block Assembly
      *2 Airbag Sensor Assembly
      *3 Telltale Light Assembly
      *4 Instrument Panel Wire
      *a

      Front view of wire harness connector

      (to Airbag Sensor Assembly)

      Connect the connector to the telltale light assembly.

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

    3. Turn the ignition switch to ON.

    4. Check the passenger airbag ON/OFF indicator according to the conditions in the table below.

      OK
      Terminal Connection Condition Specified Condition
      K73-35 (PAON) - Body ground Ignition switch ON "ON" comes on
      K73-34 (P-AB) - Body ground Ignition switch ON "OFF" comes on

    5. Turn the ignition switch off.

    6. 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 TELLTALE LIGHT ASSEMBLY Click here

    OK

  13. CHECK DTC


    1. B0084TTC01
      *1 Instrument Panel Junction Block Assembly
      *2 Airbag Sensor Assembly
      *3 Telltale Light Assembly

      Connect the connector to the airbag sensor assembly.

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

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

    4. Clear the DTCs stored in memory.


      Body Electrical > SRS Airbag > Clear DTCs

    5. Turn the ignition switch off.

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

    7. Check for DTCs.


      Body Electrical > SRS Airbag > Trouble Codes
      OK
      DTC B1660 is not output.

      Tech Tips

      Codes other than DTC B1660 may be output at this time, but they are not related to this check.

      Result
      Proceed to
      OK
      NG

    OK

    USE SIMULATION METHOD TO CHECK Click here

    NG

    REPLACE AIRBAG SENSOR ASSEMBLY Click here

  14. CHECK INSTRUMENT PANEL WIRE


    1. Disconnect the connector from the instrument panel junction block assembly.

      B0086U7C01
      *1 Instrument Panel Junction Block Assembly *2 Airbag Sensor Assembly
      *3 Telltale Light Assembly *4 Instrument Panel Wire
      *5 Service Wire - -
      *a

      Front view of wire harness connector

      (to Instrument Panel Junction Block Assembly)

      		 *b

      Front view of wire harness connector

      (to Airbag Sensor Assembly)
      *c

      Front view of wire harness connector

      (to Telltale Light Assembly)

      		 - -

    2. Using a service wire, connect terminals 35 (PAON) and 34 (P-AB) of connector B.

      Note

      Do not forcibly insert the service wire 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
      3A-8 (PAON) - 3A-46 (P-AB) Always Below 1 Ω

    4. Disconnect the service wire from connector B.

    5. Using a service wire, connect terminals 5 (PAON) and 4 (P-AB) of connector E.

      Note

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

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      3A-29 (PAON) - 3A-51 (P-AB) Always Below 1 Ω

    7. Disconnect the service wire from connector E.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      3A-8 (PAON) - Body ground or other terminals Always 1 MΩ or higher
      3A-29 (PAON) - Body ground or other terminals Always 1 MΩ or higher
      3A-46 (P-AB) - Body ground or other terminals Always 1 MΩ or higher
      3A-51 (P-AB) - Body ground or other terminals Always 1 MΩ or higher
      Result
      Proceed to
      OK
      NG

    OK

    REPLACE INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY

    NG

    REPLACE INSTRUMENT PANEL WIRE