ignition TOYOTA AVENSIS 1999 Supplement

  




H11828
→←
E1Tc ACC ON
orAirbag
Sensor
Assembly
DTC 86 Check ConnectorCurtain
Shield
Airbag
Squib (LH)
– DIAGNOSTICSSUPPLEMENTAL RESTRAINT SYSTEM
DI–27
4 Check curtain shield airbag squib (LH).
PREPARATION:
(a) Turn ignition switch to LOCK.
(b) Disconnect negative (–) terminal cable from the battery,
and wait at least for 90 seconds.
(c) Connect the curtain shield airbag assembly (LH) connec-
tor.
(d) Connect negative (–) terminal cable to the battery, and
wait at least for 2 seconds.
CHECK:
(a) Turn ignition switch to ACC or ON, and wait at least for 20
seconds.
(b) Clear DTC stored in memory.
(See step 5 on page DI–153 of Pub. No. RM599E)
(c) Turn ignition switch to LOCK, and wait at least for 20 se-
conds.
(d) Turn ignition switch to ACC or ON, and wait at least for 20
seconds.
(e) Check DTC.
(See page DI–152 of Pub. No. RM599E)
OK:
DTC 86 is not output.
HINT:
Codes other than code 86 may be output at this time, but they
are not relevant to this check.
NG Replace curtain shield airbag assembly (LH).
OK
From the results of the above inspection, the malfunctioning part can now be considered normal.
To make sure of this, use the simulation method to check. If the malfunctioning part can not be
detected by the simulation method, replace all SRS components including the wire harness.

   







H11829
Airbag
Sensor
Assembly
DTC 87
E1
Tc Check ConnectorCurtain
Shield
Airbag
Squib (LH)
→ ←
ICL+
ICL–ACC
orON
– DIAGNOSTICSSUPPLEMENTAL RESTRAINT SYSTEM
DI–29
OK
3 Check airbag sensor assembly.
PREPARATION:
(a) Connect the connector to the airbag sensor assembly.
(b) Using a service wire, connect ICL+ and ICL– of the con-
nector (on the curtain shield airbag assembly side) be-
tween the curtain shield airbag assembly (LH) and airbag
sensor assembly.
(c) Connect negative (–) terminal cable to the battery, and
wait at least for 2 seconds.
CHECK:
(a) Turn ignition switch to ACC or ON and wait at least for 20
seconds.
(b) Clear DTC stored in memory.
(See page DI–153 of Pub. No. RM599E)
(c) Turn ignition switch to LOCK, and wait at least for 20 se-
conds.
(d) Turn ignition switch to ACC or ON, and wait at least for 20
seconds.
(e) Check DTC.
(See page DI–152 of Pub. No. RM599E)
OK:
DTC 87 is not output.
HINT:
Codes other than code 87 may be output at this time, but they
are not relevant to this check.
NG Replace airbag sensor assembly.
OK

  




H11830
→←
E1Tc ACC ON
orAirbag
Sensor
Assembly
DTC 87 Check Connector Curtain
Shield
Airbag
Squib (LH)
DI–30
– DIAGNOSTICSSUPPLEMENTAL RESTRAINT SYSTEM
4 Check curtain shield airbag squib (LH).
PREPARATION:
(a) Turn ignition switch to LOCK.
(b) Disconnect negative (–) terminal cable from the battery,
and wait at least for 90 seconds.
(c) Connect the curtain shield airbag assembly (LH) connec-
tor.
(d) Connect negative (–) terminal cable to the battery, and
wait at least for 2 seconds.
CHECK:
(a) Turn ignition switch to LOCK, and wait at least for 20 se-
cond.
(b) Turn ignition switch to ACC or ON, and wait at least for 20
seconds.
(c) Clear DTC stored in memory.
(See page DI–153 of Pub. No. RM599E)
(d) Turn ignition switch to LOCK, and wait at least for 20 se-
conds.
(e) Turn ignition switch to ACC or ON, and wait at least for 20
seconds.
(f) Check DTC.
(See page DI–152 of Pub. No. RM599E)
OK:
DTC 87 is not output.
HINT:
Codes other than code 87 may be output at this time, but they
are not relevant to this check.
NG Replace curtain shield airbag assembly (LH).
OK
From the results of the above inspection, the malfunctioning part can now be considered normal.
To make sure of this, use the simulation method to check.

   








H11831
Airbag
Sensor
Assembly
DTC 88
E1 Tc Check Connector→ ← Curtain
Shield
Airbag
Squib (LH)
ICL+
ICL–ACC
orON
DI–32
– DIAGNOSTICSSUPPLEMENTAL RESTRAINT SYSTEM
OK
3 Check airbag sensor assembly.
PREPARATION:
(a) Connect the connector to the airbag sensor assembly.
(b) Using a service wire, connect ICL+ and ICL– of the con-
nector (on the curtain shield airbag assembly side) be-
tween the curtain shield airbag assembly (LH) and airbag
sensor assembly.
(c) Connect negative (–) terminal cable to the battery, and
wait at least for 2 seconds.
CHECK:
(a) Turn ignition switch to ACC or ON and wait at least for 20
seconds.
(b) Clear DTC stored in memory.
(See page DI–153 of Pub. No. RM599E)
(c) Turn ignition switch to LOCK, and wait at least for 20 se-
conds.
(d) Turn ignition switch to ACC or ON, and wait at least for 20
seconds.
(e) Check DTC.
(See page DI–152 of Pub. No. RM599E)
OK:
DTC 88 is not output.
HINT:
Codes other than code 88 may be output at this time, but they
are not relevant to this check.
NG Replace airbag sensor assembly.
OK

  





H11832
→←
E1Tc ACC ON
orAirbag
Sensor
Assembly
DTC 88 Check ConnectorCurtain
Shield
Airbag
Squib (LH)
– DIAGNOSTICSSUPPLEMENTAL RESTRAINT SYSTEM
DI–33
4 Check curtain shield airbag squib (LH).
PREPARATION:
(a) Turn ignition switch to LOCK.
(b) Disconnect negative (–) terminal cable from the battery,
and wait at least for 90 seconds.
(c) Connect the curtain shield airbag assembly (LH) connec-
tor.
(d) Connect negative (–) terminal cable to the battery, and
wait at least for 2 seconds.
CHECK:
(a) Turn ignition switch to ACC or ON, and wait at least for 20
seconds.
(b) Clear DTC stored in memory.
(See page DI–153 of Pub. No. RM599E)
(c) Turn ignition switch to LOCK, and wait at least for 20 se-
conds.
(d) Turn ignition switch to ACC or ON, and wait at least for 20
seconds.
(e) Check DTC.
(See page DI–152 of Pub. No. RM599E)
OK:
DTC 88 is not output.
HINT:
Codes other than code 88 may be output at this time, but they
are not relevant to this check.
NG Replace curtain shield airbag assembly (LH).
OK
From the results of the above inspection, the malfunctioning part can now be considered normal.
To make sure of this, use the simulation method to check.

RS0IJ–01
– SUPPLEMENTAL RESTRAINT SYSTEMSRS AIRBAG
RS–1
SRS AIRBAG
PRECAUTION
NOTICE:

The AVENSIS / CORONA is equipped with SRS, which comprises a driver airbag, front passen-
ger airbag, side airbag and curtain shield airbag. Failure to carry out service operations in the
correct sequence could cause the SRS to unexpectedly deploy during servicing, possibly lead-
ing to a serious accident. Further, if a mistake is made in servicing the SRS, it is possible that
the SRS may fail to operate when required. Before performing servicing (including removal or
installation of parts, inspection or replacement), be sure to read the following items carefully,
then follow the correct procedures described in the repair manual.

Malfunction symptoms of the SRS are difficult to confirm, so the DTCs become the most impor-
tant source of information when troubleshooting. When troubleshooting the SRS, always in-
spect the DTCs before disconnecting the battery.

Even in cases of a minor collision where the SRS does not deploy, the side airbag assembly,
curtain shileld airbag assembly and side and curtain shield airbag sensor assembly should be
inspected (See page RS–11, RS–25 and RS–36).

Never use SRS parts from another vehicle. When replacing parts, replace them with new parts.

Never disassemble and repair the side airbag assembly, curtain shield airbag assembly or side
and curtain shield airbag sensor assembly in order to reuse it.

If the side airbag assembly, curtain shield airbag assembly or side and curtain shield airbag
sensor assembly has been dropped, or if there are cracks, dents or other defects in the case,
bracket or connector, replace it with new one.

Use a volt/ohmmeter with high impedance (10 kΩ/V minimum) for troubleshooting the system’s
electrical circuits.

Information labels are attached to the periphery of the SRS components. Follow the instruc-
tions on the notices.

After working on the SRS is completed, perform the SRS warning light check (See Pub No.
RM599E on page DI–152).

If the vehicle is equipped with a mobile communication system, refer to the precaution in the
IN section.
CAUTION:

Work must be started 90 seconds after the ignition switch is turned to the ”LOCK” position and
the negative (–) terminal cable is disconnected from the battery.
(The SRS is equipped with a back–up power source so that if work is started within 90 seconds
from disconnecting the negative (–) terminal cable of the battery, the SRS may be deployed.)

When the negative (–) terminal cable is disconnected from the battery, the memory of the clock
and audio system will be canceled. So before starting work, make a record of the contents mem-
orized in the audio memory system. When work is finished, reset the audio systems as they
were before and adjust the clock. To avoid erasing the memory in each memory system, never
use a back– up power supply from outside the vehicle.

Before repairs, remove the airbag sensor if shocks are likely to be applied to the sensor during
repairs.

Do not expose the side airbag assembly, curtain shield airbag assembly or side and curtain
shield airbag sensor assembly directly to hot air or flames.

RS0IK–01
H03384
H11628
H03386
H03387
H03388
RS–2
– SUPPLEMENTAL RESTRAINT SYSTEMSRS AIRBAG
OPERATION
1. SIDE AIRBAG ASSEMBLY
The inflater and bag of the SRS side airbag are stored in the
side airbag assembly and cannot be disassembled. The inflater
contains a squib, igniter charge and gas generant, etc., and in-
flates the bag when instructed by the side airbag sensor assem-
bly.
2. CURTAIN SHIELD AIRBAG ASSEMBLY
The inflater and bag of the SRS curtain shield airbag are stored
in the curtain shield airbag assembly and cannot be disas-
sembled. The inflater contains a squib, igniter charge and gas
generant, etc., and inflates the bag when instructed by the side
airbag sensor assembly.
3. SRS WARNING LIGHT
The SRS warning light is located on the combination meter. It
goes on to alert the driver of trouble in the system when a mal-
function is detected in the airbag sensor assembly. In normal
operation conditions when the ignition switch is turned to the
ACC or ON position, the light goes on for about 6 seconds and
then goes off.
4. AIRBAG SENSOR ASSEMBLY
The airbag sensor assembly is mounted on the floor inside the
lower center finish panel. The airbag sensor assembly consists
of an airbag sensor, safing sensor, diagnosis circuit ignition
control and drive circuit, etc. It receives signals from the airbag
sensor, front airbag sensor, side airbag sensor and judges
whether the SRS must be activated or not.
5. SIDE AND CURTAIN SHIELD AIRBAG SENSOR AS-
SEMBLY
The side and curtain shield airbag sensor assembly is mounted
in the LH and RH center pillars. The side airbag sensor assem-
bly consists of a side airbag, sensor, safing sensor and diagno-
sis circuit, etc. It sends signals to the airbag sensor assembly
to judges whether the SRS side airbag must be activated or not.

Z14034
Fig.1
Fig.2Power Source
Safing
Sensor
Squibs
Deceleration Sensor
H01581
Outer
H01582
Lock of connector is released
Disconnection is completed
RS–6
– SUPPLEMENTAL RESTRAINT SYSTEMSRS AIRBAG
(b) When the vehicle is involved in a frontal collision in the
hatched area (Fig. 1) and the shock is larger than the pre-
determined level, the SRS is activated automatically. A
safing sensor is designed to go on at a smaller decelera-
tion rate than the airbag sensor. As illustrated in Fig. 2,
ignition is caused when current flows to the squib, which
happens when a safing sensor and the deceleration sen-
sor go on simultaneously. When a deceleration force acts
on the sensors, 2 squibs in the driver airbag and front pas-
senger airbag ignite and generate gas. The gas discharg-
ing into the driver airbag and front passenger airbag rap-
idly increases the pressure inside the bags, breaking
open the steering wheel pad and instrument panel door.
Bag inflation then ends, and the bags deflate as the gas
is discharged through discharge holes at the bag’s rear or
side.
7. DISCONNECTION OF SIDE AND CURTAIN SHIELD
AIRBAG SENSOR CONNECTOR
(a) With holding both flank sides of the outer, slide the outer
to the direction shown by an arrow.
(b) Lock of the connectors is released, then disconnect the
connectors.
HINT:
Make sure to hold both flank sides of the outer. If holding the top
and bottom sides, it will obstruct disconnection.

RS0IM–01
H03408
H03411
H03409
RS–10
– SUPPLEMENTAL RESTRAINT SYSTEMSIDE AIRBAG ASSEMBLY
REMOVAL
NOTICE:

If the wiring connector of the SRS is disconnected
and the ignition switch is at ON or ACC position, DTCs
will be recorded.

Never use the airbag parts from another vehicle.
When replacing parts, replace them with new parts.
1. REMOVE FRONT SEAT
(a) Remove the reclining adjuster knob and front seat cush-
ion outer shield.
(b) Remove the front seat belt lap outer anchor.
(c) Remove the 2 seat track covers and 4 bolts.
(d) Disconnect the side airbag connector.
NOTICE:
When handling the airbag connector, take care not to dam-
age the airbag wire harness.
(e) Remove the front seat.
2. REMOVE THESE PARTS FROM FRONT SEAT AS-
SEMBLY
(a) Remove the headrest.
(b) Remove the 2 headrest supports.
(c) Remove the lumber support adjusting knob.
(d) Remove the front seat inner shield.
3. REMOVE SEATBACK FROM SEAT CUSHION AS-
SEMBLY
Using a torx wrench, remove the 4 screws and seatback assem-
bly.
Torx wrench: T40 (Part No.09042–00020 or locally
manufactured tool)
4. REMOVE THESE PARTS FROM SEATBACK FRAME
(a) Disengage the hook of the seatback cover.
(b) Remove the hog rings and seatback cover.
(c) Remove the seatback pad.

RS0IS–01
H11626
2 Clips
Pillar Garnish
Cover
H11613
(1)
(2)(3)(4)(5)
H11614
Clear Plastic Bag
– SUPPLEMENTAL RESTRAINT SYSTEMCURTAIN SHIELD AIRBAG ASSEMBLY
RS–23
REMOVAL
NOTICE:

If the wiring connector of the SRS is disconnected
and the ignition switch is at ON or ACC position, DTCs
will be recorded.

Never use the airbag parts from another vehicle.
When replacing parts, replace them with new parts.
1. REMOVE FRONT PILLAR GARNISH
(a) Using a screw driver, raise the pillar garnish cover.
(b) Remove the bolt, pillar garnish cover, and front pillar gar-
nish.
2. REMOVE ROOF HEADLINING

Sedan model (See page BO–23)

Liftback model (See page BO–28)

Wagon model (See page BO–33)
3. REMOVE CURTAIN SHIELD AIRBAG
(IN CASE WITHOUT REMOVING INFLATER)
(a) In the order shown in the illustration, remove the bolts and
grommets, then remove the deployment section of the
curtain shield airbag.
(b) Put the removed airbag in the clear plastic bag and put it
on the instrument panel.
NOTICE:
Clear plastic bag is not reuse.
CAUTION:
Never diassemble the curtain shield airbag.