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 horn button assy and the airbag sensor assy center.
  3.  for the black connector (on the spiral cable subassy side) between the horn button assy and the spiral cable subassy, measure the resistance between d2+ and d2.

    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 d2+ and d2 of the black connector (on the spiral cable subassy side) between the horn button assy and the spiral cable subassy.
  3.  connect the negative () terminal cable to the battery, and wait at least for 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 b1181/18 is not output.

Hint

: codes other than code b1181/18 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 b1181/18 is not output.

Hint

: codes other than code b1181/18 may be output at this time, but they are not relevant to this check.

Use simulation method to check

Use simulation method to check

4 Check instrument panel wire(airbag sensor assy center spiral cable subassy)

  1. Disconnect the connector of the instrument panel wire.
  2.  for the connector (on the spiral cable subassy side) between the airbag sensor assy center and the spiral cable subassy, measure the resistance between d2+ and d2.

    Ok: resistance: below 1 w

5 Check spiral cable subassy

5 Check spiral cable subassy

  1. For the black connector (on the spiral cable subassy side) between the horn button assy and the spiral cable subassy, measure the resistance between d2+ and d2.

    Ok: resistance: below 1 Ω

Use simulation method to check

Use simulation method to check

Circuit description
Circuit description Wiring diagram ...

Short in d squib (2nd step) circuit (to ground)
Dtc b1182/19 short in d squib (2nd step) circuit (to ground) ...

Other materials:

Inspection procedure
1 Inspect terminal voltage(idl) Remove the cruise control ecu assy with connector still connected.  disconnect the ecm connector.  turn the ignition switch to on.  measure voltage between terminal 13 (idl) of cruise control ecu assy connector and body ground when the ...

Components
...

Onvehicle inspection
1. Connect handheld tester:  connect the handheld tester to the dlc3.  start the engine and run it at idle.  select the active test mode on the handheld tester. Hint: please refer to the handheld tester operators manual for further details. 2. Inspect actuator motor ...

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