Toyota Corolla Repair Manual: Inspection procedure
1 Check front airbag sensor (lh) circuit (to b+)(airbag sensor assy
center – airbag sensor front lh)

- 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 airbag sensor front lh.
- connect the negative (–) terminal cable to the battery,
and wait at least for 2 seconds.
- ) turn the ignition switch to on.
- for the connector (on the airbag sensor assy center side)
between the airbag sensor front lh and the airbag sensor
assy center, measure the voltage between body ground
and each of +sl and –sl.
Ok:
voltage: below 1 v


2 Check front airbag sensor(lh) circuit(to ground)(airbag sensor
assy center – airbag sensor front lh)

- Turn the ignition switch to lock.
- disconnect the negative (–) terminal cable from the battery,
and wait at least for 90 seconds.
- for the connector (on the airbag sensor assy center side)
between the airbag sensor front lh and the airbag sensor
assy center, measure the resistance between body
ground and each of +sl and –sl.
Ok:
resistance: 1 mΩ or higher


3 Check front airbag sensor (lh) circuit(open)(airbag sensor assy
center – airbag sensor front lh)

- Using a service wire, connect +sl and –sl of the connector
(on the airbag sensor front lh side) between the airbag
sensor assy center and the airbag sensor front lh.
- for the connector (on the airbag sensor assy center side)
between the airbag sensor front lh and the airbag sensor
assy center, measure the resistance between +sl and
–sl.
Ok:
resistance: below 1 Ω


4 Inspect air bag sensor front lh

- For the connector of the airbag sensor front lh, measure
the resistance between +sl and –sl.
Ok:
resistance: 820 Ω


5 Check air bag sensor assy center
Sst 09843–18040

- Disconnect the negative (–) terminal cable from the battery,
and wait at least for 90 seconds.
- connect the airbag sensor front lh connector and airbag
sensor assy center connector.
- connect the negative (–) terminal cable to the battery,
and wait at least for 2 seconds.
- turn the ignition switch to on, and wait at least for 20 seconds.
- clear the dtc stored in memory .
- turn the ignition switch to lock, and wait at least for 20
seconds.
- turn the ignition switch to on, and wait at least for 20 seconds.
- check the dtc .
Ok:
dtc b1158/b1159/16 is not output.
Hint
:
codes other than code b1158/b1159/16 may be output at this
time, but they are not relevant to this check.


Use simulation method to check
6 Check engine room main wire harness (to b+)(conector – airbag
sensor front lh)

- Turn the ignition switch to lock.
- disconnect the negative (–) terminal cable from the battery,
and wait at least for 90 seconds.
- disconnect the connector between the engine room main
wire and the instrument panel wire.
- connect the negative (–) terminal to the battery, and wait
at least for 2 seconds.
- turn the ignition switch to on.
- for the engine room main wire connector (on the airbag
sensor assy center side) between the airbag sensor assy
center and the airbag sensor front lh, measure the voltage
between body ground and each of +sl and –sl.
Ok:
voltage: below 1 v


Repair or replace instrument panel wire
7 Check engine room main wire harness (to ground)(connector –
airbag sensor front lh)

- Disconnect the connectors between the engine room
main wire and the instrument panel wire.
- for the engine room main wire connector (on the airbag
sensor assy center side) between the airbag sensor assy
center and the airbag sensor front lh, measure the resistance
between body ground and each of +sl and –sl.
Ok:
resistance: 1 mw or higher


Repair or replace instrument panel wire
8 Check engine room main wire harness(open)(connector – airbag
sensor front lh)

- Disconnect the connectors between the engine room
main wire and the instrument panel wire.
- using a service wire, connect +sl and –sl of the engine
room main wire connector (on the airbag sensor front lh
side) between the airbag sensor assy center and the airbag
sensor front lh.
- for the engine room main wire connector (on the airbag
sensor assy center side) between the airbag sensor assy
center and the airbag sensor front lh, measure the resistance
between +sl and –sl.
Ok:
resistance: below 1 Ω


Repair or replace instrument panel wire
The airbag sensor front lh circuit consists of the airbag sensor assy center
and airbag sensor front lh.
Dtc b1158/b1159/16 is recorded when malfunction is detected in the airbag sensor
front l ...
Dtc b1180/17 short in d squib (2nd step) circuit ...
Other materials:
Airbags
Front airbag, driver
Front airbag, front passenger
Head airbag
Side airbag
Knee airbag
Front airbags
Front airbags help protect the driver and the
front passenger by responding to frontal impacts
in which safety belts alone would not provide adequate
protection.
Side airbag
In the event of a ...
Disposal
1. Dispose shock absorber assy front lh
fully extend the shock absorber piston rod.
using a drill, make a hole in the cylinder as shown in the
illustration to discharge the gas inside.
Caution:
when drilling, chips may fly out, work carefully.
The gas is colorless, o ...
Switching on/off and interrupting
cruise control
Switching on
Press the button on the steering
wheel.
The indicator lights in the instrument cluster light
up and the mark in the speedometer is set to the
current speed.
Cruise control is active. The current speed is
maintained and stored as desired speed.
DSC Dynamic Stability Control is switche ...