Toyota Corolla (E120) 2002–2008 Repair Manual / Diagnostics / Supplemental restraint system / Short in p squib circuit / Inspection procedure

Toyota Corolla (E120): Inspection procedure

1 Check p squib circuit(airbag sensor assy center – instrument panel passenger airbag 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 instrument panel passenger airbag assy.

Hint

: make sure that the connector is not damaged (the lock button is not disengaged, or the claw of the lock is not deformed or damaged). If the damage is found, replace the wire harness.

3.  release the airbag activation prevention mechanism of the connector (on the airbag sensor assy center side) between the airbag sensor assy center and the instrument panel passenger airbag assy .
4.  for the connector (on the instrument panel passenger airbag assy side) between the airbag sensor assy center and the instrument panel passenger airbag assy, measure the resistance between p+ and p–.

   Ok: resistance: 1 mw or higher

2 Check air bag sensor assy center

Sst 09843–18040

1. Connect the connector to the airbag sensor assy center.
2.  connect the negative (–) terminal cable to the battery, and wait at least for 2 seconds.
3.  turn the ignition switch to on, and wait at least for 20 seconds.
4.  clear the dtc stored in memory .
5.  turn the ignition switch to lock, and wait at least for 20 seconds.
6.  turn the ignition switch to on, and wait at least for 20 seconds.
7.  check the dtc .

   Ok: dtc b0105/53 is not output.

Hint

: codes other than code b0105/53 may be output at this time, but they are not relevant to this check.

3 Check p 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 instrument panel passenger airbag assy 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 b0105/53 is not output.

Hint

: codes other than code b0105/53 may be output at this time, but they are not relevant to this check.

Use simulation method to check