AIRBAG SYSTEM, Diagnostic DTC:B1660/43

DTC Code DTC Name
B1660/43 Passenger Airbag ON/OFF Indicator Circuit Malfunction

DESCRIPTION

The passenger airbag ON/OFF indicator circuit consists of the airbag sensor assembly and clock assembly*1 or telltale light assembly*2.

The passenger airbag ON/OFF indicator indicates the operation condition of the front passenger airbag.

DTC B1660/43 is stored when a malfunction is detected in the passenger airbag ON/OFF indicator circuit.

DTC No. Detection Item DTC Detection Condition Trouble Area Test Mode / Check Mode
B1660/43 Passenger Airbag ON/OFF Indicator Circuit Malfunction

  • 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

  • Clock assembly*1

  • Telltale light assembly*2

  • Airbag sensor assembly

 Does not apply to test/check mode

Tech Tips


  • The passenger airbag ON/OFF indicator is built into the clock assembly.*1

  • The passenger airbag ON/OFF indicator is built into the telltale light assembly.*2


WIRING DIAGRAM

A01LWLRE04

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
      ON/OFF indicator illumination is always on. A
      ON/OFF indicator illumination is always off. B

    B

    CHECK CONNECTORS Click here

    A

  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 clock assembly*1 or telltale light assembly*2.

      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 clock assembly*1 or telltale light assembly*2.

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

      OK
      The terminals are not deformed or damaged.

      • *1: for Hatchback, Wagon

      • *2: for Sedan

      Result
      Proceed to
      OK
      NG

    NG

    REPLACE INSTRUMENT PANEL WIRE

    OK

  3. CHECK PASSENGER AIRBAG ON/OFF INDICATOR


    1. Connect the connector to the clock assembly*1 or telltale light assembly*2.

    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.

      • *1: for Hatchback, Wagon

      • *2: for Sedan

      Result
      Proceed to
      OK
      NG

    NG

    CHECK INSTRUMENT PANEL WIRE (OPEN) Click here

    OK

  4. CHECK DTC


    1. A01LZ2PC02
      *1 Clock Assembly (for Hatchback, Wagon)
      *2 Telltale Light Assembly (for Sedan)
      *3 Airbag Sensor 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. Clear the DTCs stored in memory.

      Click here


      Body Electrical > SRS Airbag > Clear DTCs

    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


      Body Electrical > SRS Airbag > Trouble Codes
      OK
      DTC B1660/43 is not output.

      Tech Tips

      Codes other than DTC B1660/43 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

  5. CHECK INSTRUMENT PANEL WIRE (OPEN)


    1. Turn the ignition switch off.

      A01M0TPC04
      *A for Hatchback, Wagon *B for Sedan
      *1 Clock Assembly (for Hatchback, Wagon) *2 Telltale Light Assembly (for Sedan)
      *3 Airbag Sensor 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 Clock Assembly)
      *c

      Front view of wire harness connector

      (to Telltale Light Assembly)

      		 - -

    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. for Hatchback, Wagon:

      Disconnect the connector from the clock assembly.

    4. for Sedan:

      Disconnect the connector from the telltale light assembly.

    5. Using a service wire, connect terminals 23 (PAON) and 17 (P-AB) of connector B.

      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
      for Hatchback, Wagon:
      Tester Connection Condition Specified Condition
      E133-7 (PAON) - E133-6 (P-AB) Always Below 1 Ω
      for Sedan:
      Tester Connection Condition Specified Condition
      E48-5 (PAON) - E48-4 (P-AB) Always Below 1 Ω

    7. Disconnect the service wire from connector B.

      Result
      Proceed to
      OK
      NG

    NG

    REPLACE INSTRUMENT PANEL WIRE

    OK

  6. CHECK INSTRUMENT PANEL WIRE (SHORT)


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

      A01LY2ZC05
      *A for Hatchback, Wagon *B for Sedan
      *1 Clock Assembly (for Hatchback, Wagon) *2 Telltale Light Assembly (for Sedan)
      *3 Airbag Sensor Assembly *4 Instrument Panel Wire
      *a

      Front view of wire harness connector

      (to Clock Assembly)

      		 *b

      Front view of wire harness connector

      (to Telltale Light Assembly)
      Standard Resistance
      for Hatchback, Wagon:
      Tester Connection Condition Specified Condition
      E133-7 (PAON) - E133-6 (P-AB) Always 1 MΩ or higher
      for Sedan:
      Tester Connection Condition Specified Condition
      E48-5 (PAON) - E48-4 (P-AB) Always 1 MΩ or higher
      Result
      Proceed to
      OK
      NG

    NG

    REPLACE INSTRUMENT PANEL WIRE

    OK

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


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

      A01LY2ZC05
      *A for Hatchback, Wagon *B for Sedan
      *1 Clock Assembly (for Hatchback, Wagon) *2 Telltale Light Assembly (for Sedan)
      *3 Airbag Sensor Assembly *4 Instrument Panel Wire
      *a

      Front view of wire harness connector

      (to Clock Assembly)

      		 *b

      Front view of wire harness connector

      (to Telltale Light Assembly)

    2. Turn the ignition switch to ON.

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

      Standard Voltage
      for Hatchback, Wagon:
      Tester Connection Condition Specified Condition
      E133-7 (PAON) - Body ground Ignition switch ON Below 1 V
      E133-6 (P-AB) - Body ground Ignition switch ON Below 1 V
      for Sedan:
      Tester Connection Condition Specified Condition
      E48-5 (PAON) - Body ground Ignition switch ON Below 1 V
      E48-4 (P-AB) - 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

  8. CHECK INSTRUMENT PANEL WIRE (SHORT TO GROUND)


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

      A01LY2ZC05
      *A for Hatchback, Wagon *B for Sedan
      *1 Clock Assembly (for Hatchback, Wagon) *2 Telltale Light Assembly (for Sedan)
      *3 Airbag Sensor Assembly *4 Instrument Panel Wire
      *a

      Front view of wire harness connector

      (to Clock Assembly)

      		 *b

      Front view of wire harness connector

      (to Telltale Light Assembly)
      Standard Resistance
      for Hatchback, Wagon:
      Tester Connection Condition Specified Condition
      E133-7 (PAON) - Body ground Always 1 MΩ or higher
      E133-6 (P-AB) - Body ground Always 1 MΩ or higher
      for Sedan:
      Tester Connection Condition Specified Condition
      E48-5 (PAON) - Body ground Always 1 MΩ or higher
      E48-4 (P-AB) - Body ground Always 1 MΩ or higher
      Result
      Result Proceed to
      OK (for Hatchback, Wagon) A
      OK (for Sedan) B
      NG C

    A

    REPLACE CLOCK ASSEMBLY Click here

    B

    REPLACE TELLTALE LIGHT ASSEMBLY Click here

    C

    REPLACE INSTRUMENT PANEL WIRE

  9. 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 clock assembly*1 or telltale light assembly*2.

      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 clock assembly*1 or telltale light assembly*2.

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

      OK
      The terminals are not deformed or damaged.

      • *1: for Hatchback, Wagon

      • *2: for Sedan

      Result
      Proceed to
      OK
      NG

    NG

    REPLACE INSTRUMENT PANEL WIRE

    OK

  10. CHECK INSTRUMENT PANEL WIRE (OPEN)


    1. Using a service wire, connect terminals 23 (PAON) and 17 (P-AB) of connector B.

      A01M0TPC04
      *A for Hatchback, Wagon *B for Sedan
      *1 Clock Assembly (for Hatchback, Wagon) *2 Telltale Light Assembly (for Sedan)
      *3 Airbag Sensor 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 Clock Assembly)
      *c

      Front view of wire harness connector

      (to Telltale Light Assembly)

      		 - -

      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
      for Hatchback, Wagon:
      Tester Connection Condition Specified Condition
      E133-7 (PAON) - E133-6 (P-AB) Always Below 1 Ω
      for Sedan:
      Tester Connection Condition Specified Condition
      E48-5 (PAON) - E48-4 (P-AB) Always Below 1 Ω

    3. Disconnect the service wire from connector B.

      Result
      Proceed to
      OK
      NG

    NG

    REPLACE INSTRUMENT PANEL WIRE

    OK

  11. CHECK INSTRUMENT PANEL WIRE (SHORT)


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

      A01LY2ZC05
      *A for Hatchback, Wagon *B for Sedan
      *1 Clock Assembly (for Hatchback, Wagon) *2 Telltale Light Assembly (for Sedan)
      *3 Airbag Sensor Assembly *4 Instrument Panel Wire
      *a

      Front view of wire harness connector

      (to Clock Assembly)

      		 *b

      Front view of wire harness connector

      (to Telltale Light Assembly)
      Standard Resistance
      for Hatchback, Wagon:
      Tester Connection Condition Specified Condition
      E133-7 (PAON) - E133-6 (P-AB) Always 1 MΩ or higher
      for Sedan:
      Tester Connection Condition Specified Condition
      E48-5 (PAON) - E48-4 (P-AB) Always 1 MΩ or higher
      Result
      Proceed to
      OK
      NG

    NG

    REPLACE INSTRUMENT PANEL WIRE

    OK

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


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

      A01LY2ZC05
      *A for Hatchback, Wagon *B for Sedan
      *1 Clock Assembly (for Hatchback, Wagon) *2 Telltale Light Assembly (for Sedan)
      *3 Airbag Sensor Assembly *4 Instrument Panel Wire
      *a

      Front view of wire harness connector

      (to Clock Assembly)

      		 *b

      Front view of wire harness connector

      (to Telltale Light Assembly)

    2. Turn the ignition switch to ON.

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

      Standard Voltage
      for Hatchback, Wagon:
      Tester Connection Condition Specified Condition
      E133-7 (PAON) - Body ground Ignition switch ON Below 1 V
      E133-6 (P-AB) - Body ground Ignition switch ON Below 1 V
      for Sedan:
      Tester Connection Condition Specified Condition
      E48-5 (PAON) - Body ground Ignition switch ON Below 1 V
      E48-4 (P-AB) - 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

  13. CHECK INSTRUMENT PANEL WIRE (SHORT TO GROUND)


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

      A01LY2ZC05
      *A for Hatchback, Wagon *B for Sedan
      *1 Clock Assembly (for Hatchback, Wagon) *2 Telltale Light Assembly (for Sedan)
      *3 Airbag Sensor Assembly *4 Instrument Panel Wire
      *a

      Front view of wire harness connector

      (to Clock Assembly)

      		 *b

      Front view of wire harness connector

      (to Telltale Light Assembly)
      Standard Resistance
      for Hatchback, Wagon:
      Tester Connection Condition Specified Condition
      E133-7 (PAON) - Body ground Always 1 MΩ or higher
      E133-6 (P-AB) - Body ground Always 1 MΩ or higher
      for Sedan:
      Tester Connection Condition Specified Condition
      E48-5 (PAON) - Body ground Always 1 MΩ or higher
      E48-4 (P-AB) - Body ground Always 1 MΩ or higher
      Result
      Proceed to
      OK
      NG

    NG

    REPLACE INSTRUMENT PANEL WIRE

    OK

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


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

      A01LY2ZC06
      *A for Hatchback, Wagon *B for Sedan
      *1 Clock Assembly (for Hatchback, Wagon) *2 Telltale Light Assembly (for Sedan)
      *3 Airbag Sensor Assembly *4 Instrument Panel Wire
      *a

      Front view of wire harness connector

      (to Clock Assembly)

      		 *b

      Front view of wire harness connector

      (to Telltale Light Assembly)

    2. Turn the ignition switch to ON.

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

      Standard Voltage
      for Hatchback, Wagon:
      Tester Connection Condition Specified Condition
      E133-10 (IG+) - Body ground Ignition switch ON 11 to 14 V
      for Sedan:
      Tester Connection Condition Specified Condition
      E48-10 (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

  15. CHECK PASSENGER AIRBAG ON/OFF INDICATOR


    1. A01LW80C06
      *1 Clock Assembly (for Hatchback, Wagon)
      *2 Telltale Light Assembly (for Sedan)
      *3 Airbag Sensor Assembly
      *4 Instrument Panel Wire
      *a

      Front view of wire harness connector

      (to Airbag Sensor Assembly)

      for Hatchback, Wagon:

      Connect the connector to the clock assembly.

    2. for Sedan:

      Connect the connector to the telltale light assembly.

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

    4. Turn the ignition switch to ON.

    5. Check the indicator according to the conditions in the table below.

      OK
      Terminal Connection Condition Specified Condition
      E14-23 (PAON) - Body ground Ignition switch ON "ON" comes on
      E14-17 (P-AB) - Body ground Ignition switch ON "OFF" comes on

    6. Turn the ignition switch off.

    7. 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
      Result Proceed to
      OK A
      NG (for Hatchback, Wagon) B
      NG (for Sedan) C

    B

    REPLACE CLOCK ASSEMBLY Click here

    C

    REPLACE TELLTALE LIGHT ASSEMBLY Click here

    A

  16. CHECK DTC


    1. A01LZ2PC02
      *1 Clock Assembly (for Hatchback, Wagon)
      *2 Telltale Light Assembly (for Sedan)
      *3 Airbag Sensor Assembly

      Connect the connector to the airbag sensor assembly.

    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 ignition switch off.

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

    6. Check for DTCs.

      Click here


      Body Electrical > SRS Airbag > Trouble Codes
      OK
      DTC B1660/43 is not output.

      Tech Tips

      Codes other than DTC B1660/43 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