Toyota RAV4 (XA40) 2013-2018 Service Manual: 4Wd control ecu communication stop mode
Description
Hint:
For vehicle with 4wd only.
Wiring diagram
Inspection procedure
Notice:
- Turn the ignition switch off before measuring the resistances of the main wire and the branch wire.
- After the ignition switch is turned off, check that the key reminder warning system and light reminder warning system are not in operation.
- Before measuring the resistance, leave the vehicle for at least 1 minute and do not operate the ignition switch, any switches or doors. If doors need to be opened in order to check connectors, open the doors and leave them open.
Hint:
Operating the ignition switch, any switches or any doors triggers related ecu and sensor communication with the can, which causes resistance variation.
- Check can bus line for disconnection (4wd control ecu branch wire)
- Disconnect the e57 4wd control ecu connector.
- Measure the resistance of the wire harness side connector.
Standard resistance
- Check wire harness (4wd control ecu - battery and body ground)
- Disconnect the e57 4wd control ecu connector.
- Measure the resistance of the wire harness side connector.
Standard resistance 
- Measure the voltage of the wire harness side connector.
Standard voltage
Replace 4wd control ecu
Center airbag sensor communication stop mode
Description
Wiring diagram
Inspection procedure
Notice:
Turn the ignition switch off before measuring the resistances of the
main wire and the branch
wire.
After the ignition swi ...
Can bus line
Description
When any dtc for the can communication system is output, first measure the
resistance between the
terminals of the dlc3 to specify the trouble area, and check that there is not a
sho ...
Other materials:
On-vehicle inspection
Connect intelligent tester
Connect the intelligent tester to the dlc3.
Start the engine and idle it.
Select the active test mode on the intelligent tester.
Hint:
Please refer to the intelligent tester operator's
manual for further details.
Check actuator motor operation
...
All-wheel drive lock
switch (awd models)
All-wheel drive lock mode can be used when a large amount of
drive power needs to be applied to all the wheels, such as when
the vehicle gets stuck in mud and you need to free it.
Press the switch.
The torque of the engine is distributed
to the rear wheels to the maximum
extent possible in
ac ...
Installing child restraints
Follow the child restraint system manufacturer’s instructions.
Firmly secure child restraints to the seats using the latch
anchors or a seat belt. Attach the top tether strap when installing
a child restraint.
The lap/shoulder belt can be used if your child restraint system
is not compati ...
