1999 TOYOTA AVENSIS lock

F03737
4A–FE and 7A–FE Engines
2C–T, 2C–TE, 3S–FE and 1CD–FTV
EnginesSR0I8–02
R07281
Normal
Abnormal
R10552Engine IdlingEngine Stopped 5 mm (0.20 in.) or less
– STEERINGPOWER STEERING FLUID
SR–3
POWER STEERING FLUID
INSPECTION
1. CHECK FLUID LEVEL
(a) Keep the vehicle level.
(b) With the engine stopped, check the fluid level in the oil
reservoir.
If necessary, add fluid.
Fluid: ATF DEXRON II or III
HINT:
Check that the fluid level is within the HOT LEVEL range on the
reservoir / reservoir cap dipstick.
If the fluid is cold, check that it is within the COLD LEVEL range.
(c) Start the engine and run it at idle.
(d) Turn the steering wheel from lock to lock several times to
boost fluid temperature.
Fluid temperature: 80
C (176
F)
(e) Check for foaming or emulsification.
If there is foaming or emulsification, bleed power steering sys-
tem (See Pub. No. RM599E on page SR–5).
(f) With the engine idling, measure the fluid level in the oil
reservoir.
(g) Stop the engine.
(h) Wait a few minutes and remeasure the fluid level in the oil
reservoir.
Maximum fluid level rise: 5 mm (0.20 in.)
If a problem is found, bleed power steering system (See Pub.
No. RM599E on page SR–5).
(i) Check the fluid level.

F04157
4A–FE and 7A–FE Engines 2C–T, 2C–TE and 1CD–FTV Engines
3S–FE Engine SSTAttachment
Pressure Feed
Tube
IN
OUT
OUT
Attachment
SSTAttachment
Pressure Feed
TubeIN
Attachment
AttachmentSST
OUT IN
SR–4
– STEERINGPOWER STEERING FLUID
2. CHECK STEERING FLUID PRESSURE
(a) Disconnect the pressure feed tube from the PS vane
pump [See Pub. No. RM599E on page SR–21 (4A–FE
and 7A–FE engines), SR–24 (3S–FE engine) and see
page SR–8 (2C–T, 2C–TE and 1CD–FTV engines)].
(b) Connect SST, as shown in the illustration below.
SST 09640–10010 (09641–01010, 09641–01030,
09641–01060)
NOTICE:
Check that the valve of the SST is in the open position.
(c) Bleed the power steering system (See Pub. No. RM599E
on page SR–5).
(d) Start the engine and run it at idle.
(e) Turn the steering wheel from lock to lock several times to
boost fluid temperature.
Fluid temperature: 80
C (176
F)

Z15498
Oil
reservoir
PS Vane
Pump
SST Closed PS Gear
Z15499
Oil
reservoir
PS Vane
Pump
SST Open Lock Position
PS Gear
Z15500
Oil
reservoir
PS Vane
Pump PS Gear
SST Open Lock Position
– STEERINGPOWER STEERING FLUID
SR–5
(f) With the engine idling, close the valve of the SST and ob-
serve the reading on the SST.
Minimum fluid pressure:
4A–FE and 7A–FE engines8,238 kPa (84 kgf/cm2, 1,195 psi)
3S–FE engine9,022 kPa (92 kgf/cm2, 1,309 psi)
2C–T, 2C–TE and 1CD–FTV engines8,826 kPa (90 kgf/cm2, 1,280 psi)
NOTICE:

Do not keep the valve closed for more than 10 se-
conds.

Do not let the fluid temperature become too high.
(g) With the engine idling, open the valve fully.
(h) Measure the fluid pressure at engine speeds of 1,000 rpm
and 3,000 rpm.
Difference fluid pressure:
490 kPa (5 kgf/cm
2, 71 psi) or less
NOTICE:
Do not turn the steering wheel.
(i) With the engine idling and valve fully opened, turn the
steering wheel to full lock.
Minimum fluid pressure:
4A–FE and 7A–FE engines8,238 kPa (84 kgf/cm2, 1,195 psi)
3S–FE engine9,022 kPa (92 kgf/cm2, 1,309 psi)
2C–T, 2C–TE and 1CD–FTV engines8,826 kPa (90 kgf/cm2, 1,280 psi)
NOTICE:

Do not maintain lock position for more than 10 se-
conds.

Do not let the fluid temperature become too high.
(j) Disconnect the SST.
(k) Connect the pressure feed tube to PS vane pump
[See Pub. No. RM599E on page SR–22 (4A–FE and 7A–
FE engines), SR–25 (3S–FE engine), and see page
SR–16 (2C–T, 2C–TE and 1CD–FTV engine)].
(l) Bleed the power steering system(See Pub. No. RM599E
on page SR–5).

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.

H11606
Pretensioner (LH)
Side Airbag Assembly (LH)
(Squib) Side and Curtain Shield
Airbag Sensor (LH) Front Airbag Sensor (RH) Side Airbag Assembly (RH)
(Squib)
Pretensioner (RH)
Airbag Sensor
AssemblyFront Passenger Airbag
Assembly (Squib)
Spiral Cable
No.1 J/B 2
37 8
10
11
12
13
1
4
5
6
9
Steering Wheel
Pad (Squib)
14
15
16
17
18
19Front Airbag Sensor (LH) Side and Curtain Shield
Airbag Sensor (RH)
Curtain Shield Airbag
Assembly (RH) (Squib)
Curtain Shield Airbag
Assembly (LH) (Squib)
2021
– SUPPLEMENTAL RESTRAINT SYSTEMSRS AIRBAG
RS–3
6. SRS CONNECTORS
No.ItemApplication
(1)Terminal Twin–Lock MechanismConnectors 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16,
17, 18, 19, 20, 21
(2)Airbag Activation Prevention MechanismConnectors 1, 2, 3, 4, 5, 7, 8, 9, 10, 12, 17, 19, 20, 21
(3)Electrical Connection Check MechanismConnectors 1, 2, 3
(4)Connector Twin–Lock MechanismConnectors 5, 6
(a) All connectors in the SRS are colored in yellow to distin-
guish them from other connectors. Connectors having
special functions and specifically designed for the SRS
are used in the locations shown on the previous page to
ensure high reliability. These connectors use durable
gold–plated terminals.

Z05953
Spacer
Housing
Female Male
R10587
When Connector is Connected When Connector is Disconnected
Short Spring Plate
Housing
Housing
Terminal
ConnectorsShort Spring PlateSquib
Squib Short Spring Plate ONContacting Male Terminal Short Spring Plate
Closed Circuit
R12076Airbag Sensor AssemblyDisconnection
Detection
PinSRS
Warning
Light RS–4
– SUPPLEMENTAL RESTRAINT SYSTEMSRS AIRBAG
(1) Terminal Twin–Lock Mechanism
Each connector has a two–piece component con-
sisting of a housing and a spacer. This design en-
ables the terminal to be locked securely by two lock-
ing devices (the retainer and the lance) to prevent
terminals from coming out.
(2) Airbag Activation Prevention Mechanism
Each connector contains a short spring plate. When
the connector is disconnected, the short spring
plate automatically connects positive (+) terminal
and negative (–) terminal of the squib.
HINT:
The type of connector is shown in the diagram on the previous
page.
(3) Electrical Connection Check Mechanism
This mechanism electrically checks that connectors
are connected correctly and completely. The electri-
cal connection check mechanism is designed so
that the disconnection detection pin connects with
the diagnosis terminals when the connector hous-
ing lock is locked.

H01315
Terminal for Diagnosis
Disconnection Detection Pin Half ConnectionComplete Connection
Terminal for
Diagnosis
AB0089
Secondary Lock
Primary LockLockLock
Primary Lock Incomplete
(Secondary Lock Prevented)Primary Lock Complete
(Secondary Lock Permitted)Twin–Lock Completed
– SUPPLEMENTAL RESTRAINT SYSTEMSRS AIRBAG
RS–5
HINT:
The connectors shown in this illustration are connectors ”1”, ”2”
and ”3” in step 10.
(4) Connector Twin–Lock Mechanism
With this mechanism connectors (male and female
connectors) are locked by 2 locking devices to in-
crease the connection reliability. If the primary lock
is incomplete, ribs interfere and prevent the sec-
ondary lock.

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.