Toyota Corolla (E120) 2002–2008 Repair Manual / Diagnostics / Supplemental restraint system / Front airbag sensor (rh)
malfunction / Inspection procedure
Toyota Corolla (E120): Inspection procedure
1 Check front airbag sensor (rh) circuit (to b+)(airbag sensor assy center – airbag front rh sensor)
- Disconnect the negative (–) terminal cable from the battery, and wait at least for 90 seconds.
- disconnect the connectors between the airbag front rh sensor and the airbag sensor assy center.
- 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 front rh sensor and the airbag sensor
assy center, measure the voltage between body
ground and each of +sr and –sr.
Ok: voltage: below 1 v
2 Check front airbag sensor (rh) circuit (to ground)(airbag sensor assy – airbag front rh sensor)
- 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 front rh sensor and the airbag sensor
assy center, measure the resistance between body
ground and each of +sr and –sr.
Ok: resistance: 1 mΩ or higher
3 Check front airbag sensor (rh) circuit(open)(airbag sensor assy center – airbag front rh sensor)
Sst 09843–18040
- Using a service wire, connect +sr and –sr of the connector (on the airbag front rh sensor side) between the airbag front rh sensor and the airbag sensor assy center.
- for the connector (on the airbag sensor assy center side)
between the airbag front rh sensor and the airbag sensor
assy center, measure the resistance between +sr
and –sr.
Ok: resistance: below 1 Ω
4 Inspect air bag front rh sensor
- For the connector of the airbag front rh sensor, measure
the resistance between +sr and –sr.
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 front rh sensor 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 b1156/b1157/15 is not output.
Hint
: codes other than code b1156/b1157/15 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+)(connector – airbag front rh sensor)
- 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 cable 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 front rh sensor, measure the voltage
between body ground and each of +sr and –sr.
Ok: voltage: below 1 v
Repair or replace instrument panel wire
7 Check engine room main wire harness (to ground)(connector – airbag front rh sensor)
- 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 front rh sensor, measure the resistance
between body ground and each of +sr and –sr.
Ok: resistance: 1 mΩ or higher
Repair or replace instrument panel wire
8 Check engine room main wire harness(open)(connector – airbag front rh sensor)
Sst 09843–18040
- Disconnect the connectors between the engine room main wire and the instrument panel wire.
- using a service wire, connect +sr and –sr of the engine room main wire connector (on the airbag front rh sensor side) between the airbag sensor assy center and the airbag front rh sensor.
- for the engine room main wire connector (on the airbag
sensor assy center side) between the airbag sensor assy
center and the airbag front rh sensor, measure the resistance
between the +sr and –sr.
Ok: resistance: below 1 Ω
Repair or replace instrument panel wire
Other materials:
Circuit description
The shift solenoid valve sl is turned ”on” and ”off” by signals from the ecm
in order to control the hydraulic
pressure operation, the lock–up relay valve, which then the controls operation
of the lock–up clutch.
Fail safe function:
if the ecm detects a malfunction, it turns the ...
Inspection procedure
Hint:
this dtc chart is on the premise that the engine is cranked normally.
If the engine is not cranked, proceed
to the problem symptoms table on page 05–42.
Read freeze frame data using the hand-held tester or the obd ii scan
tool. Freeze frame data records
the engine conditions ...
Alarm
The alarm uses light and
sound to give an alert when
an intrusion is detected.
The alarm is triggered in the
following situations when
the alarm is set:
A locked door or trunk is
unlocked or opened in any
way other than using the
entry function (if equipped),
wireless remote control,
mechani ...