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 center airbag sensor assembly and passenger airbag ON/OFF indicator.

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

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

DTC No. DTC Detection Condition Trouble Area
B1660/43
  • 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 passenger airbag ON/OFF indicator circuit.

  • Radio receiver assembly malfunction*1

  • Accessory meter assembly malfunction*2

  • Center airbag sensor assembly malfunction


  • Instrument panel wire

  • No. 2 instrument panel wire

  • Radio receiver assembly (Passenger airbag ON/OFF indicator)*1

  • Accessory meter assembly (Passenger airbag ON/OFF indicator)*2

  • Center airbag sensor assembly


WIRING DIAGRAM

A01ND4RE07
A01ND4RE08

INSPECTION PROCEDURE

PROCEDURE


  1. CHECK PASSENGER AIRBAG ON/OFF INDICATOR CONDITION


    1. Turn the power switch on (IG).

    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.

      A01NFR3E67
      Result
      ON/OFF Indicator Illumination Proceed to
      Always ON A
      OFF B

    B
    A
  2. CHECK CONNECTORS


    1. Turn the power switch off.

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

      Note

      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 center airbag sensor assembly and radio receiver assembly*1 or accessory meter assembly*2. Also check that the connectors that link the instrument panel wire and No. 2 instrument panel wire are properly connected.


      • *1: w/ Navigation System

      • *2: w/o Navigation System

      OK
      The connectors are properly connected.

      Tech Tips

      If the connectors are not connected securely, reconnect the connectors and proceed to the next inspection.

    4. Disconnect the connectors from the center airbag sensor assembly and radio receiver assembly*1 or accessory meter assembly*2. Also disconnect the connectors that link the instrument panel wire and No. 2 instrument panel wire.


      • *1: w/ Navigation System

      • *2: w/o Navigation System

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

      OK
      The terminals are not deformed or damaged.

    NG
    OK
  3. CHECK PASSENGER AIRBAG ON/OFF INDICATOR


    1. A01NGAYE01

      Connect the connectors that link the instrument panel wire and No. 2 instrument panel wire.

    2. Connect the connector to the radio receiver assembly*1 or accessory meter assembly*2.


      • *1: w/ Navigation System

      • *2: w/o Navigation System

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

    4. Turn the power switch on (IG).

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

      OK
      The passenger airbag ON/OFF indicator does not come on.

    NG
    OK
  4. CHECK CENTER AIRBAG SENSOR ASSEMBLY


    1. A01NG6VE01
      Text in Illustration
      *1 Radio Receiver Assembly*1 or Accessory Meter Assembly*2
      *2 Center Airbag Sensor Assembly

      Connect the connector to the center airbag sensor assembly.

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

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

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

    5. Turn the power switch off.

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

    7. Check for DTCs Click here.

      OK
      DTC B1660/43 is not output.

      • *1: w/ Navigation System

      • *2: w/o Navigation System

      Tech Tips

      Codes other than DTC B1660/43 may be output at this time, but they are not related to this check.


    NG
    OK
  5. CHECK PASSENGER AIRBAG ON/OFF INDICATOR CIRCUIT (OPEN)


    1. Turn the power switch off.

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

      Note

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

    3. Connect the connectors that link the instrument panel wire and No. 2 instrument panel wire.

    4. Disconnect the connector from the radio receiver assembly*1 or accessory meter assembly*2.


      • *1: w/ Navigation System

      • *2: w/o Navigation System

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

      Note

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

      SST
      09843-18040
    6. w/ Navigation System:

      A01ND2UE01

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

        Standard Resistance
        Tester Connection Condition Specified Condition
        G8-1 (ARON) - G8-10 (AIR) Always Below 1 Ω
        Text in Illustration
        *1 Radio Receiver Assembly *2 Center Airbag Sensor Assembly
        *3

        Front view of wire harness connector

        (to Center Airbag Sensor Assembly)

        *4

        Front view of wire harness connector

        (to Radio Receiver Assembly)

        *5 Connector B *6 Connector E
    7. w/o Navigation System:

      A01NHEXE01

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

        Standard Resistance
        Tester Connection Condition Specified Condition
        G1-8 (PAON) - G1-7 (P-AB) Always Below 1 Ω
        Text in Illustration
        *1 Accessory Meter Assembly *2 Center Airbag Sensor Assembly
        *3

        Front view of wire harness connector

        (to Center Airbag Sensor Assembly)

        *4

        Front view of wire harness connector

        (to Accessory Meter Assembly)

        *5 Connector B *6 Connector E

    NG
    OK
  6. CHECK PASSENGER AIRBAG ON/OFF INDICATOR CIRCUIT (SHORT)


    1. Disconnect SST from connector B.

    2. A01NHKME01
      Text in Illustration
      *1 Radio Receiver Assembly
      *2 Center Airbag Sensor Assembly
      *3

      Front view of wire harness connector

      (to Radio Receiver Assembly)

      *4 Connector E

      w/ Navigation System:


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

        Standard Resistance
        Tester Connection Condition Specified Condition
        G8-1 (ARON) - G8-10 (AIR) Always 1 MΩ or higher
    3. A01NCZCE01
      Text in Illustration
      *1 Accessory Meter Assembly
      *2 Center Airbag Sensor Assembly
      *3

      Front view of wire harness connector

      (to Accessory Meter Assembly)

      *4 Connector E

      w/o Navigation System:


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

        Standard Resistance
        Tester Connection Condition Specified Condition
        G1-8 (PAON) - G1-7 (P-AB) Always 1 MΩ or higher

    NG
    OK
  7. CHECK PASSENGER AIRBAG ON/OFF INDICATOR CIRCUIT (SHORT TO GROUND)


    1. A01NHKME01
      Text in Illustration
      *1 Radio Receiver Assembly
      *2 Center Airbag Sensor Assembly
      *3

      Front view of wire harness connector

      (to Radio Receiver Assembly)

      *4 Connector E

      w/ Navigation System:


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

        Standard Resistance
        Tester Connection Condition Specified Condition
        G8-1 (ARON) - Body ground Always 1 MΩ or higher
        G8-10 (AIR) - Body ground Always 1 MΩ or higher
    2. A01NCZCE01
      Text in Illustration
      *1 Accessory Meter Assembly
      *2 Center Airbag Sensor Assembly
      *3

      Front view of wire harness connector

      (to Accessory Meter Assembly)

      *4 Connector E

      w/o Navigation System:


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

        Standard Resistance
        Tester Connection Condition Specified Condition
        G1-8 (PAON) - Body ground Always 1 MΩ or higher
        G1-7 (P-AB) - Body ground Always 1 MΩ or higher

    NG
    OK
  8. CHECK PASSENGER AIRBAG ON/OFF INDICATOR CIRCUIT (SHORT TO B+)


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

    2. Turn the power switch on (IG).

    3. A01NHKME01
      Text in Illustration
      *1 Radio Receiver Assembly
      *2 Center Airbag Sensor Assembly
      *3

      Front view of wire harness connector

      (to Radio Receiver Assembly)

      *4 Connector E

      w/ Navigation System:


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

        Standard Voltage
        Tester Connection Switch Condition Specified Condition
        G8-1 (ARON) - Body ground Power switch on (IG) Below 1 V
        G8-10 (AIR) - Body ground Power switch on (IG) Below 1 V
    4. A01NCZCE01
      Text in Illustration
      *1 Accessory Meter Assembly
      *2 Center Airbag Sensor Assembly
      *3

      Front view of wire harness connector

      (to Accessory Meter Assembly)

      *4 Connector E

      w/o Navigation System:


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

        Standard Voltage
        Tester Connection Switch Condition Specified Condition
        G1-8 (PAON) - Body ground Power switch on (IG) Below 1 V
        G1-7 (P-AB) - Body ground Power switch on (IG) Below 1 V

    NG
    OK
  9. CHECK CONNECTORS


    1. Turn the power switch off.

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

      Note

      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 center airbag sensor assembly and radio receiver assembly*1 or accessory meter assembly*2. Also check that the connectors that link the instrument panel wire and No. 2 instrument panel wire are properly connected.


      • *1: w/ Navigation System

      • *2: w/o Navigation System

      OK
      The connectors are properly connected.

      Tech Tips

      If the connectors are not connected securely, reconnect the connectors and proceed to the next inspection.

    4. Disconnect the connectors from the center airbag sensor assembly and radio receiver assembly*1 or accessory meter assembly*2. Also disconnect the connectors that link the instrument panel wire and No. 2 instrument panel wire.


      • *1: w/ Navigation System

      • *2: w/o Navigation System

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

      OK
      The terminals are not deformed or damaged.

    NG
    OK
  10. CHECK PASSENGER AIRBAG ON/OFF INDICATOR CIRCUIT (OPEN)


    1. Connect the connectors that link the instrument panel wire and No. 2 instrument panel wire.

    2. Using SST, connect terminals 23 (PAON) and 17 (P-AB) of connector B.

      Note

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

      SST
      09843-18040
    3. w/ Navigation System:

      A01ND2UE01

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

        Standard Resistance
        Tester Connection Condition Specified Condition
        G8-1 (ARON) - G8-10 (AIR) Always Below 1 Ω
        Text in Illustration
        *1 Radio Receiver Assembly *2 Center Airbag Sensor Assembly
        *3

        Front view of wire harness connector

        (to Center Airbag Sensor Assembly)

        *4

        Front view of wire harness connector

        (to Radio Receiver Assembly)

        *5 Connector B *6 Connector E
    4. w/o Navigation System:

      A01NHEXE01

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

        Standard Resistance
        Tester Connection Condition Specified Condition
        G1-8 (PAON) - G1-7 (P-AB) Always Below 1 Ω
        Text in Illustration
        *1 Accessory Meter Assembly *2 Center Airbag Sensor Assembly
        *3

        Front view of wire harness connector

        (to Center Airbag Sensor Assembly)

        *4

        Front view of wire harness connector

        (to Accessory Meter Assembly)

        *5 Connector B *6 Connector E

    NG
    OK
  11. CHECK PASSENGER AIRBAG ON/OFF INDICATOR CIRCUIT (SHORT)


    1. Disconnect SST from connector B.

    2. A01NHKME01
      Text in Illustration
      *1 Radio Receiver Assembly
      *2 Center Airbag Sensor Assembly
      *3

      Front view of wire harness connector

      (to Radio Receiver Assembly)

      *4 Connector E

      w/ Navigation System:


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

        Standard Resistance
        Tester Connection Condition Specified Condition
        G8-1 (ARON) - G8-10 (AIR) Always 1 MΩ or higher
    3. A01NCZCE01
      Text in Illustration
      *1 Accessory Meter Assembly
      *2 Center Airbag Sensor Assembly
      *3

      Front view of wire harness connector

      (to Accessory Meter Assembly)

      *4 Connector E

      w/o Navigation System:


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

        Standard Resistance
        Tester Connection Condition Specified Condition
        G1-8 (PAON) - G1-7 (P-AB) Always 1 MΩ or higher

    NG
    OK
  12. CHECK PASSENGER AIRBAG ON/OFF INDICATOR CIRCUIT (SHORT TO GROUND)


    1. A01NHKME01
      Text in Illustration
      *1 Radio Receiver Assembly
      *2 Center Airbag Sensor Assembly
      *3

      Front view of wire harness connector

      (to Radio Receiver Assembly)

      *4 Connector E

      w/ Navigation System:


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

        Standard Resistance
        Tester Connection Condition Specified Condition
        G8-1 (ARON) - Body ground Always 1 MΩ or higher
        G8-10 (AIR) - Body ground Always 1 MΩ or higher
    2. A01NCZCE01
      Text in Illustration
      *1 Accessory Meter Assembly
      *2 Center Airbag Sensor Assembly
      *3

      Front view of wire harness connector

      (to Accessory Meter Assembly)

      *4 Connector E

      w/o Navigation System:


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

        Standard Resistance
        Tester Connection Condition Specified Condition
        G1-8 (PAON) - Body ground Always 1 MΩ or higher
        G1-7 (P-AB) - Body ground Always 1 MΩ or higher

    NG
    OK
  13. CHECK PASSENGER AIRBAG ON/OFF INDICATOR CIRCUIT (SHORT TO B+)


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

    2. Turn the power switch on (IG).

    3. A01NHKME01
      Text in Illustration
      *1 Radio Receiver Assembly
      *2 Center Airbag Sensor Assembly
      *3

      Front view of wire harness connector

      (to Radio Receiver Assembly)

      *4 Connector E

      w/ Navigation System:


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

        Standard Voltage
        Tester Connection Switch Condition Specified Condition
        G8-1 (ARON) - Body ground Power switch on (IG) Below 1 V
        G8-10 (AIR) - Body ground Power switch on (IG) Below 1 V
    4. A01NCZCE01
      Text in Illustration
      *1 Accessory Meter Assembly
      *2 Center Airbag Sensor Assembly
      *3

      Front view of wire harness connector

      (to Accessory Meter Assembly)

      *4 Connector E

      w/o Navigation System:


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

        Standard Voltage
        Tester Connection Switch Condition Specified Condition
        G1-8 (PAON) - Body ground Power switch on (IG) Below 1 V
        G1-7 (P-AB) - Body ground Power switch on (IG) Below 1 V

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


    1. Turn the power switch on (IG).

    2. A01NEXBE01
      Text in Illustration
      *1

      Front view of wire harness connector

      (to Radio Receiver Assembly)

      w/ Navigation System:


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

        Standard Voltage
        Tester Connection Switch Condition Specified Condition
        G8-15 (IG+) - Body ground Power switch on (IG) 10 to 14 V
        Result
        Result Proceed to
        OK A
        NG B
    3. A01NFIFE01
      Text in Illustration
      *1

      Front view of wire harness connector

      (to Accessory Meter Assembly)

      w/o Navigation System:


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

        Standard Voltage
        Tester Connection Switch Condition Specified Condition
        G1-2 (IG2) - Body ground Power switch on (IG) 10 to 14 V
        Result
        Result Proceed to
        OK A
        NG C

    B
    C
    A
  15. CHECK PASSENGER AIRBAG ON/OFF INDICATOR


    1. A01ND7ME01
      Text in Illustration
      *1

      Front view of wire harness connector

      (to Center Airbag Sensor Assembly)

      Turn the power switch off.

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

      Note

      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 radio receiver assembly*1 or accessory meter assembly*2.


      • *1: w/ Navigation System

      • *2: w/o Navigation System

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

    5. Turn the power switch on (IG).

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

      Result
      Tester Connection Switch Condition Passenger Airbag ON/OFF Indicator
      F29-23 (PAON) - Body ground Power switch on (IG) "ON" comes on
      F29-17 (P-AB) - Body ground Power switch on (IG) "OFF" comes on
      Result
      Result Proceed to
      OK A
      NG (w/ Navigation System) B
      NG (w/o Navigation System) C

    B
    C
    A
  16. CHECK CENTER AIRBAG SENSOR ASSEMBLY


    1. A01NG6VE01
      Text in Illustration
      *1 Radio Receiver Assembly*1 or Accessory Meter Assembly*2
      *2 Center Airbag Sensor Assembly

      Turn the power switch off.

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

      Note

      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 center airbag sensor assembly.

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

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

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

    7. Turn the power switch off.

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

    9. Check for DTCs Click here.

      OK
      DTC B1660/43 is not output.

      • *1: w/ Navigation System

      • *2: w/o Navigation System

      Tech Tips

      Codes other than DTC B1660/43 may be output at this time, but they are not related to this check.


    NG
    OK
  17. CHECK INSTRUMENT PANEL WIRE (OPEN)


    1. Disconnect the instrument panel wire from the No. 2 instrument panel wire.

      A01NFMGE01

      Tech Tips

      SST has already been inserted into connector B.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      FG1-1 (PAON) - FG1-12 (P-AB) Always Below 1 Ω
      Text in Illustration
      *1 Radio Receiver Assembly*1 or Accessory Meter Assembly*2 *2 Center Airbag Sensor Assembly
      *3 No. 2 Instrument Panel Wire *4 Instrument Panel Wire
      *5

      Front view of wire harness connector

      (to Center Airbag Sensor Assembly)

      *6

      Front view of wire harness connector

      (to No. 2 Instrument Panel Wire)

      *7 Connector B *8 Connector C

      • *1: w/ Navigation System

      • *2: w/o Navigation System


    NG
    OK
  18. CHECK INSTRUMENT PANEL WIRE (SHORT)


    1. A01NDOLE01
      Text in Illustration
      *1 Radio Receiver Assembly*1 or Accessory Meter Assembly*2
      *2 Center Airbag Sensor Assembly
      *3 No. 2 Instrument Panel Wire
      *4 Instrument Panel Wire
      *5

      Front view of wire harness connector

      (to No. 2 Instrument Panel Wire)

      *6 Connector C

      Disconnect the instrument panel wire from the No. 2 instrument panel wire.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      FG1-1 (PAON) - FG1-12 (P-AB) Always 1 MΩ or higher

      • *1: w/ Navigation System

      • *2: w/o Navigation System


    NG
    OK
  19. CHECK INSTRUMENT PANEL WIRE (SHORT TO GROUND)


    1. A01NDOLE01
      Text in Illustration
      *1 Radio Receiver Assembly*1 or Accessory Meter Assembly*2
      *2 Center Airbag Sensor Assembly
      *3 No. 2 Instrument Panel Wire
      *4 Instrument Panel Wire
      *5

      Front view of wire harness connector

      (to No. 2 Instrument Panel Wire)

      *6 Connector C

      Disconnect the instrument panel wire from the No. 2 instrument panel wire.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      FG1-1 (PAON) - Body ground Always 1 MΩ or higher
      FG1-12 (P-AB) - Body ground Always 1 MΩ or higher

      • *1: w/ Navigation System

      • *2: w/o Navigation System


    NG
    OK
  20. CHECK INSTRUMENT PANEL WIRE (SHORT TO B+)


    1. A01NDOLE01
      Text in Illustration
      *1 Radio Receiver Assembly*1 or Accessory Meter Assembly*2
      *2 Center Airbag Sensor Assembly
      *3 No. 2 Instrument Panel Wire
      *4 Instrument Panel Wire
      *5

      Front view of wire harness connector

      (to No. 2 Instrument Panel Wire)

      *6 Connector C

      Turn the power switch off.

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

      Note

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

    3. Disconnect the instrument panel wire from the No. 2 instrument panel wire.

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

    5. Turn the power switch on (IG).

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

      Standard Voltage
      Tester Connection Condition Specified Condition
      FG1-1 (PAON) - Body ground Power switch on (IG) Below 1 V
      FG1-12 (P-AB) - Body ground Power switch on (IG) Below 1 V

      • *1: w/ Navigation System

      • *2: w/o Navigation System


    NG
    OK