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:
If the vehicle becomes stuck
Carry out the following procedures if the tires spin or the vehicle becomes
stuck in mud, dirt or snow:
1 Stop the engine. Set the parking brake and shift the shift lever to P (automatic
transmission or continuously variable transmission) or N (manual transmission).
2 Remove the mud, snow or s ...
Heater control & accessory assy
Replacement
1. Remove console panel upper
2. Remove instrument cluster finish panel
3. Remove heater control & accessory assy
Release the 2 fitting claws and pull out the heater control
& accessory assy.
Using a screwdriver, open the claw of the cable clamp and
dis ...
Basic inspection
Resistance measuring condition of electronic parts
unless stated, all resistance is measured at an ambient
temperature of 20 c (68 °F). As the resistance
may be outside the specifications if measured at high temperatures
immediately after
the vehicle has been running, measur ...