AIRBAG SYSTEM, Diagnostic DTC:B1810/53, B1811/53, B1812/53, B1813/53

DTC Code DTC Name
B1810/53 Short in Driver Side Squib 2nd Step Circuit
B1811/53 Open in Driver Side Squib 2nd Step Circuit
B1812/53 Short to GND in Driver Side Squib 2nd Step Circuit
B1813/53 Short to B+ in Driver Side Squib 2nd Step Circuit

DESCRIPTION


DTC No. DTC Detection Condition Trouble Area
B1810/53

  • The center airbag sensor assembly receives a line short circuit signal 5 times in the driver side squib 2nd step circuit during primary check.

  • Driver side squib 2nd step malfunction

  • Spiral cable malfunction

  • Center airbag sensor assembly malfunction

  • Instrument panel wire

  • Spiral cable

  • Steering pad (Driver side squib 2nd step)

  • Center airbag sensor assembly
B1811/53

  • The center airbag sensor assembly receives an open circuit signal in the driver side squib 2nd step circuit for 2 seconds.

  • Driver side squib 2nd step malfunction

  • Spiral cable malfunction

  • Center airbag sensor assembly malfunction

  • Instrument panel wire

  • Spiral cable

  • Steering pad (Driver side squib 2nd step)

  • Center airbag sensor assembly
B1812/53

  • The center airbag sensor assembly receives a short circuit to ground signal in the driver side squib 2nd step circuit for 0.5 seconds.

  • Driver side squib 2nd step malfunction

  • Spiral cable malfunction

  • Center airbag sensor assembly malfunction

  • Instrument panel wire

  • Spiral cable

  • Steering pad (Driver side squib 2nd step)

  • Center airbag sensor assembly
B1813/53

  • The center airbag sensor assembly receives a short circuit to B+ signal in the driver side squib 2nd step circuit for 0.5 seconds.

  • Driver side squib 2nd step malfunction

  • Spiral cable malfunction

  • Center airbag sensor assembly malfunction

  • Instrument panel wire

  • Spiral cable

  • Steering pad (Driver side squib 2nd step)

  • Center airbag sensor assembly

WIRING DIAGRAM

A017B3KE08

INSPECTION PROCEDURE

Tech Tips


  • Perform the simulation method by selecting the "check mode" (signal check) with the intelligent tester Click here.

  • After selecting the "check mode" (signal check), perform the simulation method by wiggling each connector of the airbag system or driving the vehicle on a city or rough road Click here.

PROCEDURE


  1. CHECK CONNECTORS


    1. A017BCVE02

      Turn the ignition switch off.

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

    3. Check that the connectors are properly connected to the steering pad, spiral cable and center airbag sensor assembly.

      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 steering pad, spiral cable and center airbag sensor assembly.

    5. Check that the connector terminals are not damaged.

      OK
      The terminals are not deformed or damaged.

    6. Check that the spiral cable connector (on the steering pad side) is not damaged.

      OK
      The lock button is not disengaged, and the claw of the lock is not deformed or damaged.

    NG

    REPLACE WIRE HARNESS

    OK

  2. CHECK STEERING PAD (DRIVER SIDE SQUIB 2ND STEP)


    1. A017DGAE01

      Connect the instrument panel wire to the center airbag sensor assembly and spiral cable.

    2. Connect SST (resistance 2.1 Ω) to connector E (black connector).

      CAUTION:

      Never connect the tester to the steering pad (driver side squib 2nd step) for measurement, as this may lead to a serious injury due to airbag deployment.

      Note


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

      • Insert SST straight into the terminals of the connector.

      SST
      09843-18061

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

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

    8. Check for DTCs Click here.

      OK
      DTC B1810, B1811, B1812, B1813, or 53 is not output.

      Tech Tips

      Codes other than DTC B1810, B1811, B1812, B1813, and 53 may be output at this time, but they are not related to this check.


    NG

    CHECK DRIVER SIDE SQUIB 2ND STEP CIRCUIT Click here

    OK

    REPLACE STEERING PAD Click here

  3. CHECK DRIVER SIDE SQUIB 2ND STEP CIRCUIT


    1. A017E3SE01

      Turn the ignition switch off.

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

    3. Disconnect SST from connector E.

    4. Disconnect the instrument panel wire from the center airbag sensor assembly.

    5. Check for a short to B+ in the circuit.


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

      2. Turn the ignition switch on (IG).

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

        Standard voltage
        Tester Connection Switch Condition Specified Condition
        z4-1 (D2-) - Body ground Ignition switch on (IG) Below 1 V
        z4-2 (D2+) - Body ground Ignition switch on (IG) Below 1 V

    6. Check for an open in the circuit.


      1. Turn the ignition switch off.

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

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

        Standard resistance
        Tester Connection Switch Condition Specified Condition
        z4-1 (D2-) - z4-2 (D2+) Always Below 1 Ω

    7. Check for a short to ground in the circuit.


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

        Standard resistance
        Tester Connection Switch Condition Specified Condition
        z4-1 (D2-) - Body ground Always 1 MΩ or higher
        z4-2 (D2+) - Body ground Always 1 MΩ or higher

    8. Check for a short in the circuit.


      1. Release the activation prevention mechanism built into connector B Click here.

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

        Standard resistance
        Tester Connection Switch Condition Specified Condition
        z4-1 (D2-) - z4-2 (D2+) Always 1 MΩ or higher

    NG

    CHECK CENTER AIRBAG SENSOR ASSEMBLY Click here

    OK

  4. CHECK CENTER AIRBAG SENSOR ASSEMBLY


    1. A017DZ4E02

      Restore the released activation prevention mechanism of connector B to the original condition.

    2. Connect the connectors to the steering pad and the center airbag sensor assembly.

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

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

    8. Check for DTCs Click here.

      OK
      DTC B1810, B1811, B1812, B1813, or 53 is not output.

      Tech Tips

      Codes other than DTC B1810, B1811, B1812, B1813, and 53 may be output at this time, but they are not related to this check.


    NG

    REPLACE CENTER AIRBAG SENSOR ASSEMBLY Click here

    OK

    USE SIMULATION METHOD TO CHECK Click here

  5. CHECK INSTRUMENT PANEL WIRE


    1. A017G75E04

      Restore the released activation prevention mechanism of connector B to the original condition.

    2. Disconnect the instrument panel wire from the spiral cable.

    3. Check for a short to B+ in the circuit.


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

      2. Turn the ignition switch on (IG).

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

        Standard voltage
        Tester Connection Switch Condition Specified Condition
        D52-4 (D2+) - Body ground Ignition switch on (IG) Below 1 V
        D52-3 (D2-) - Body ground Ignition switch on (IG) Below 1 V

    4. Check for an open in the circuit.


      1. Turn the ignition switch off.

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

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

        Standard resistance
        Tester Connection Switch Condition Specified Condition
        D52-4 (D2+) - D52-3 (D2-) Always Below 1 Ω

    5. Check for a short to ground in the circuit.


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

        Standard resistance
        Tester Connection Switch Condition Specified Condition
        D52-4 (D2+) - Body ground Always 1 MΩ or higher
        D52-3 (D2-) - Body ground Always 1 MΩ or higher

    6. Check for a short in the circuit.


      1. Release the activation prevention mechanism built into connector B Click here.

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

        Standard resistance
        Tester Connection Switch Condition Specified Condition
        D52-4 (D2+) - D52-3 (D2-) Always 1 MΩ or higher

    NG

    REPLACE INSTRUMENT PANEL WIRE

    OK

  6. CHECK SPIRAL CABLE


    1. A017E7QE01

      Check for a short to B+ in the circuit.


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

      2. Turn the ignition switch on (IG).

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

        Standard voltage
        Tester Connection Switch Condition Specified Condition
        z4-2 (D2+) - Body ground Ignition switch on (IG) Below 1 V
        z4-1 (D2-) - Body ground Ignition switch on (IG) Below 1 V

    2. Check for an open in the circuit.


      1. Turn the ignition switch off.

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

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

        Standard resistance
        Tester Connection Switch Condition Specified Condition
        z4-2 (D2+) - z4-1 (D2-) Always Below 1 Ω

    3. Check for a short to ground in the circuit.


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

        Standard resistance
        Tester Connection Switch Condition Specified Condition
        z4-2 (D2+) - Body ground Always 1 MΩ or higher
        z4-1 (D2-) - Body ground Always 1 MΩ or higher

    4. Check for a short in the circuit.


      1. Release the activation prevention mechanism built into connector D Click here.

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

        Standard resistance
        Tester Connection Switch Condition Specified Condition
        z4-2 (D2+) - z4-1 (D2-) Always 1 MΩ or higher

    NG

    REPLACE SPIRAL CABLE Click here

    OK

    USE SIMULATION METHOD TO CHECK Click here