Toyota Corolla (E120): Inspection procedure

1 Check d squib circuit(airbag sensor assy center – horn button assy)

  1. Disconnect the negative (–) terminal cable from the battery, and wait at least for 90 seconds.
  2.  disconnect the connectors between the airbag sensor assy center and the horn button assy.
  3.  connect the negative (–) terminal cable to the battery, and wait at least for 2 seconds.
  4.  turn the ignition switch to on.
  5.  for the orange connector (on the spiral cable sub–assy side) between the horn button assy and the spiral cable sub–assy, measure the voltage between d+ and body ground.

    Ok: voltage: below 1 v

2 Check air bag sensor assy center

2 Check air bag sensor assy center

  1. Turn the ignition switch to lock.
  2.  disconnect the negative (–) terminal cable from the battery, and wait at least for 90 seconds.
  3.  connect the connector to the airbag sensor assy center.
  4.  using a service wire, connect d+ and d– of the orange connector (on the spiral cable sub–assy side) between the horn button assy and the spiral cable sub–assy.
  5.  connect the negative (–) terminal cable to the battery, and wait at least for 2 seconds.
  6.  turn the ignition switch to on, and wait at least for 20 seconds.
  7.  clear the dtc stored in memory .
  8.  turn the ignition switch to lock, and wait at least for 20 seconds.
  9.  turn the ignition switch to on, and wait at least for 60 seconds.
  10.  check the dtc .

    Ok: dtc b0103/12 is not output.

Hint

: codes other than code b0103/12 may be output at this time, but they are not relevant to this check.

3 Check d squib

3 Check d squib

Sst 09843–18040

  1. Turn the ignition switch to lock.
  2.  disconnect the negative (–) terminal cable from the battery, and wait at least for 90 seconds.
  3.  connect the horn button assy connectors.
  4. connect the negative (–) terminal cable to the battery, and wait at least for 2 seconds.
  5.  turn the ignition switch to on, and wait at least for 20 seconds.
  6.  clear the dtc stored in memory .
  7.  turn the ignition switch to lock, and wait at least for 20 seconds.
  8.  turn the ignition switch to on, and wait at least for 20 seconds.
  9.  check the dtc .

    Ok: dtc b0103/12 is not output.

Hint

: codes other than code b0103/12 may be output at this time, but they are not relevant to this check.

4 Use simulation method to check

4 Use simulation method to check

Replace all srs components including the wire harness

Replace all srs components including the wire harness

5 Check instrument panel wire(airbag sensor assy center – spiral cable sub–assy)

  1. Turn the ignition switch to lock.
  2.  disconnect the connectors of the instrument panel wire.
  3.  turn the ignition switch to on.
  4.  for the connector (on the spiral cable sub–assy side) between the airbag sensor assy center and the spiral cable sub–assy, measure the voltage between d+ and body ground.

    Ok: voltage: below 1 v

6 Check spiral cable sub–assy

6 Check spiral cable sub–assy

  1. For the orange connector (on the spiral cable sub–assy side) between the horn button assy and the spiral cable sub–assy, measure the voltage between d+ and body ground.

    Ok: voltage: below 1 v

7 Use simulation method to check

7 Use simulation method to check

Replace all srs components including the wire harness

Replace all srs components including the wire harness

    Share this page:

    Other materials:

    Wiper & washer
    Preparation Sst Recomended tools Equipment ...

    Foamed material application areas
    If an increase in temperature or other condition damages the foamed material when repairing or replacing the panel, fill in the insufficient areas with urethane foam. The following illustration shows the areas for one side, but the foamed material must be applied equally to both the left and r ...

    Bluetooth® audio/phone
    The following can be performed using Bluetooth® wireless communication: ■ Bluetooth® audio The Bluetooth® audio system enables you to enjoy music played on a portable player from the vehicle speakers via wireless communication. This audio system supports Bluetooth®, a wireless data sy ...