Toyota RAV4 (XA40) 2013-2018 Service Manual: Precaution
Caution:
- The vehicle is equipped with a supplemental restraint
system (srs), which consists of a steering pad, front
passenger airbag, curtain shield airbag, front seat side
airbag, seat belt pretensioner, center airbag sensor,
front airbag sensor, side airbag sensor, rear airbag
sensor, occupant classification ecu and seat position
airbag sensor. Failure to carry out service procedures
in the correct sequence could cause srs parts to
unexpectedly deploy and possibly lead to serious
injuries. Furthermore, if a mistake is made when
servicing srs parts, they may fail to operate when
required. Before performing servicing (including
installation/removal, inspection and replacement of
parts), be sure to read the following precautions.
- Before starting work, wait at least 90 seconds after the
ignition switch is turned off and after the cable of the
negative (-) battery terminal is disconnected. (Srs
parts are equipped with a backup power source. If
work is started within 90 seconds of turning the
ignition switch off and disconnecting the cable from
the negative (-) battery terminal, srs parts may
deploy.)
(The srs is equipped with a back-up power source, so
if work is started within 90 seconds of disconnecting
the negative (-) terminal cable of the battery, the srs
may be deployed).
- Do not expose srs parts directly to hot air or flames.
Notice:
Hint:
In the airbag system, the center airbag sensor, front airbag
sensor lh and rh, side airbag sensor lh and rh, and rear
airbag sensor lh and rh are collectively referred to as the
airbag sensors.
- Handling precautions for airbag sensors
- Before starting the following operations, wait for at
least 90 seconds after disconnecting the negative (-
) terminal cable from the battery:
- Replacement of the airbag sensors
- Adjustment of the front/rear doors of the vehicle
equipped with the side airbags and curtain shield
airbags (fitting adjustment)
- When connecting or disconnecting the airbag
sensor connectors, ensure that each sensor is
installed in the vehicle.
- Do not use airbag sensors which have been
dropped during the operation or transportation.
- Do not disassemble the airbag sensors.
- Inspection procedure for vehicle involved
in accident
- When the airbag has not deployed, confirm the
dtcs by checking the srs warning light. If there is
any malfunction in the srs airbag system, perform
troubleshooting.
- When any of the airbags have deployed, replace the
airbag sensors and check the installation condition.
- Srs connector
- Srs connectors are located as shown in the
following illustration.
- W/ front seat side airbag and curtain shield airbag
- W/o front seat side airbag and curtain shield airbag
- All connectors in the srs except the seat position
sensor connector and the occupant classification
ecu connector are colored yellow to distinguish
them from other connectors. Some connectors have
special functions, and are specially designed for the
srs. These connectors use durable gold-plated
terminals, and are placed in the locations shown
above to ensure high reliability.
- Terminal twin-lock mechanism:
each connector is a two-piece component
consisting of a housing and a spacer. This
design enables the terminal to be locked
securely by two locking devices (the retainer and
the lance) to prevent the terminals from
becoming disconnected.
- Activation prevention mechanism:
each connector contains a short spring plate.
When the connector is disconnected, the short
spring plate creates a short circuit by
automatically connecting the positive (+) and
negative (-) terminals of the squib.
- Half connection prevention mechanism:
if the connector is not completely connected, the
connector is disconnected by the spring
operation so that no continuity exists.
- Connector position assurance mechanism:
the cpa (yellow part) slides, which completes
the connector engagement, only when the
housing lock (white part) is completely engaged.
- Connector lock mechanism (1):
locking the connector lock button connects the
connector.
- Connector lock mechanism (2):
both the primary lock with holder lances and the
secondary lock with a retainer prevent the
connectors from becoming disconnected.
- Improper connection prevention lock
mechanism:
when connecting the holder, the lever is pushed
into the end by rotating around the a axis to lock
the holder securely.
- Disconnection of connectors for steering pad, front passenger airbag
assembly (squib side), curtain shield airbag assembly and front seat outer
belt assembly
Hint:
Tape the screwdriver tip before use.
- Release the lock button (yellow part) of the
connector using a screwdriver.
- Insert the screwdriver tip between the connector
and the base, and then raise the connector.
- Connection of connectors for steering pad, front passenger airbag
assembly (squib side), curtain shield airbag assembly and front seat outer
belt assembly
- Connect the connector.
- Push the lock button (yellow part) of the connector
down securely. (When locking, a click sound can be
heard.)
- Disconnection of connectors for front passenger
airbag assembly (instrument panel wire side)
- Place a finger on the slider, slide the slider to
release the lock, and then disconnect the connector.
- Connection of connectors for front passenger airbag assembly
(instrument panel wire side)
- Connect the connector as shown in the illustration.
(When locking, make sure that the slider returns to
its original position and a click sound can be heard.)
Hint:
When connecting, the slider slides. Do not touch the
slider while connecting, as this may result in an
insecure fit.
- Disconnection of connectors for front seat side airbag assembly
- Place a finger on the slider, slide the slider to
release the lock, and then disconnect the connector.
- Connection of connectors for front seat side airbag assembly
- Connect the connector as shown in the illustration.
(When locking, make sure that the slider returns to
its original position and a click sound can be heard.)
Hint:
When connecting, the slider slides. Do not touch the
slider while connecting, as this may result in an
insecure fit.
- Disconnection of connectors for center airbag sensor assembly
- Pull the lever by pushing part a as shown in the
illustration and disconnect the holder (with
connectors).
Hint:
Perform the following procedures when replacing
the holder.
- Remove the holder.
- Using a screwdriver, unlock the retainer.
- Release the fitting lances and remove the
holder.
- Install the holder.
- Install the connectors into the holder. (When
locking, a click sound can be heard.)
Hint:
The retainer is locked when the holder is
connected.
- Connection of connectors for center airbag sensor assembly
- Firmly insert the holder (with connectors) into the
center airbag sensor until it cannot be pushed any
further.
- Push the lever to connect the holder (with
connectors). (When locking, a click sound can be
heard.)
Hint:
The holder slides into the center airbag sensor
when it is being connected. Do not hold the holder
while connecting, as it may result in an insecure fit.
- Disconnection of connectors for front airbag sensor
- Push down the housing lock (white part) and slide
the cpa (yellow part). (At this time, the connector
cannot be disconnected.)
- Push down the housing lock (white part) again and
disconnect the connector.
Hint:
Do not push down part a shown in the illustration
when disconnecting.
- After disconnecting the connector, check that the
position of the housing lock (white part) is as shown
in the illustration.
- Connection of connectors for front airbag sensor
- Before connecting the connectors, check that the
position of the housing lock (white part) is as shown
in the illustration.
- Be sure to engage the connectors until they are
locked. (When locking, make sure that a click sound
can be heard.)
Hint:
When connecting them, the housing lock (white
part) slides. Do not hold the housing lock (white
part) and part a, as it may result in an insecure fit.
- Disconnection of connectors for side airbag sensor and rear airbag
sensor
- While holding both sides of the outer connector
locking sleeve, slide the outer in the direction shown
by the arrow.
- When the connector lock is released, the
connectors are disconnected.
Hint:
Be sure to hold both outer flanks. Holding the top
and bottom sides will make disconnection difficult.
- Connection of connectors for side airbag
sensor and rear airbag sensor
- Connect the connector as shown in the illustration
(when locking, make sure that the outer returns to
its original position and a click sound can be heard).
Hint:
When connecting, the outer slides. Do not hold the
outer while connecting, as it may result in an
insecure fit.
Other materials:
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Replacement
Replace timing chain cover oil seal
Using a screwdriver and hammer, tap out the oil
seal.
Place the oil seal retainer on wooden blocks.
Apply multi-purpose grease to the lip of a new oil
seal.
Notice:
Keep the lip free of foreign objects.
Using sst and a hammer, tap in a ...