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:
Inspection
1. Spark plug
Notice:
never use a wire brush for cleaning.
Never attempt to adjust the electrode gap on used
spark plug.
Spark plug should be replaced every 192,000 km
(120,000 miles).
Clean the spark plugs.
Air pressure: below 588 kpa (6.0 Kg/cm2, 85 psi)
duration: 20 sec ...
Monitor description
Dtc p0451, p0452 or p0453 is recorded by the ecm when the vapor pressure
sensor malfunctions.
P0451
The ecm senses pressure in the fuel tank using the vapor pressure sensor. The
ecm supplies the sensor
with a regulated 5 v reference–voltage and the sensor returns a signal voltage
between ...
Replacement
Hint:
installation is in the reverse order of the removal. But the
installation is indicated only when it has a
point.
In the lh side, work in the same procedure as in the rh side.
1. Disconnect battery negative terminal
2. Remove front seat assembly rh
3. Remove front seat inner be ...
© 2011-2021 Copyright www.tcorolla.net