Toyota Tacoma manuals

Toyota Corolla Repair Manual: Inspection procedure

1 Check side squib(lh) circuit(airbag sensor assy center front seat airbag assy lh)

  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 front seat airbag assy (lh).
  3.  for the connector (on the front seat airbag assy side) between the airbag sensor assy center and the front seat airbag assy (lh), measure the resistance between sfl+ and sfl.

    Ok: resistance: below 1 Ω

2 Check air bag sensor assy center

2 Check air bag sensor assy center

Sst 0984318040

  1. Connect the connector to the airbag sensor assy center.
  2.  using a service wire, connect sfl+ and sfl of the connector (on the front seat airbag assy side) between the airbag sensor assy center and the front seat airbag assy (lh).
  3.  connect the negative () terminal cable to the battery, and wait at least 2 seconds.
  4.  turn the ignition switch to on, and wait at least for 20 seconds.
  5.  clear the dtc stored in memory .
  6.  turn the ignition switch to lock, and wait at least for 20 seconds.
  7.  turn the ignition switch to on, and wait at least for 20 seconds.
  8.  check the dtc .

    Ok: dtc b0116/48 is not output.

Hint

: codes other than code b0116/48 may be output at this time, but they are not relevant to this check.

3 Check side squib(lh)

3 Check side squib(lh)

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 front seat airbag assy (lh) connector.
  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 b0116/48 is not output.

Hint

: codes other than code b0116/48 may be output at this time, but they are not relevant to this check.

Use simulation method to check

Use simulation method to check

Circuit description
The side squib (lh) circuit consists of the airbag sensor assy center and front seat airbag assy (lh). It causes the srs to deploy when the srs deployment conditions are satisfied. Dtc b0116/4 ...

Short in side squib (lh) circuit (to ground)
Dtc b0117/45 short in side squib (lh) circuit (to ground) ...

Other materials:

Inspection procedure
1 Check d squib circuit(airbag sensor assy center horn button assy) Disconnect the negative () terminal cable from the battery, and wait at least for 90 seconds.  disconnect the connectors between the airbag sensor assy center and the horn button assy.  connect the nega ...

Inspection procedure
Hint: start the inspection from step 1 in case of using the handheld tester and start from step 2 in case of not using the handheld tester. 1 Read value of handheld tester(front speed sensor) Select the datalist mode on the handheld tester.  check that there is no difference betw ...

Source voltage drop
The srs is equipped with a voltageincrease circuit (dcdc converter) in the airbag sensor assy center in case the source voltage drops. When the battery voltage drops, the voltageincrease circuit (dcdc converter) functions to increase the voltage of the srs to normal voltage. The diag ...

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