Toyota Tacoma manuals

Toyota Corolla Repair Manual: 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 subassy side) between the horn button assy and the spiral cable subassy, 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 subassy side) between the horn button assy and the spiral cable subassy.
  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 0984318040

  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 subassy)

  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 subassy side) between the airbag sensor assy center and the spiral cable subassy, measure the voltage between d+ and body ground.

    Ok: voltage: below 1 v

6 Check spiral cable subassy

6 Check spiral cable subassy

  1. For the orange connector (on the spiral cable subassy side) between the horn button assy and the spiral cable subassy, 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

Circuit description
The d squib circuit consists of the airbag sensor assy center, spiral cable subassy and horn button assy. It causes the srs to deploy when the srs deployment conditions are satisfied. Dtc b01 ...

Short in p squib circuit
Dtc b0105/53 short in p squib circuit ...

Other materials:

Circuit description
Hint: these dtcs indicate a malfunction related to the primary circuit. If dtc p0351 is displayed, check the no.1 Ignition coil with igniter circuit. If dtc p0352 is displayed, check the no.2 Ignition coil with igniter circuit. If dtc p0353 is displayed, check the no.3 Ignition coil ...

Inspection procedure
Hint: if different dtcs related to different systems that have terminal e2 as the ground terminal are output simultaneously, terminal e2 may be open. Read freeze frame data using the hand-held tester or the obd ii scan tool. Freeze frame data records the engine conditions when a malf ...

Horn
To sound the horn, press on or close to the mark. CAUTION ■Caution while driving Do not adjust the steering wheel while driving. Doing so may cause the driver to mishandle the vehicle and cause an accident, resulting in death or serious injury. ■After adjusting the steering wh ...

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