Toyota RAV4 (XA40) 2013-2018 Service Manual: How to proceed with troubleshooting
Notice:
- Dtcs for the can communication system are as
follows: u0073, u0100, u0105, u0121, u0122, u0123,
u0124, u0126, u0129, c1280, c1296, c1297, and
b1499.
- Refer to the troubleshooting procedures of each
system if dtcs regarding the can communication
system are not output.
- 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:
- *: Use the intelligent tester (with can vim).
- Operating the ignition switch, any switches or any doors
triggers related ecu and sensor communication with the
can, which causes resistance variation.
- Vehicle brought to workshop
![](images/books/256/53/3.htm37.gif)
- Inspect battery voltage
Standard voltage::
11 to 14 v
If the voltage is below 11 v, recharge or replace the battery
before proceeding.
![](images/books/256/53/3.htm38.gif)
- Check can bus line
- Check the can bus line (see page ca-75).
![](images/books/256/53/3.htm39.gif)
- Check installed systems (ecu and sensor) that use can communication
![](images/books/256/53/3.htm40.gif)
- Check and clear dtc*
![](images/books/256/53/3.htm41.gif)
- Check intelligent tester via can vim*
- Select "communication bus check" (see page ca-
34).
![Toyota RAV4. Check intelligent tester via can vim*](images/books/256/53/3.htm42.jpg)
Notice:
- The systems (ecus and sensors) that use can
communication vary depending on the vehicle and
option settings. Check which systems (ecus and
sensors) are installed on the vehicle (see page ca-34).
- Non-installed ecus or sensors are not displayed. Do
not mistake them for being in communication stop
mode
- If 2 or more ecus or sensors are not displayed on the
intelligent tester, perform troubleshooting for open
circuits in one side of the can branch line for each
undisplayed ecu or sensor.
![](images/books/256/53/3.htm43.gif)
![](images/books/256/53/3.htm44.jpg)
- Dtc combination table
- Confirm the trouble according to the combination of
output dtcs regarding the can communication system.
Hint:
Previous can communication system dtcs may be the
cause if can communication system dtcs are output and all
ecus and sensors connected to the can communication
system are displayed on the intelligent tester
"communication bus check" screen.
- Check the dtc combination table (see page ca-34).
![](images/books/256/53/3.htm45.gif)
- Circuit inspection
![](images/books/256/53/3.htm46.gif)
- Identify problem
![](images/books/256/53/3.htm47.gif)
- Repair or replace
![](images/books/256/53/3.htm48.gif)
- Confirmation test
![](images/books/256/53/3.htm49.gif)
End
Brief description
The can (controller area network) is a serial data
communication system for real time application. It is
a vehicle multiplex communication system which
has a high comm ...
(2005/11-2006/01)
(2006/01- )
Hint:
*: For 4wd ...
Other materials:
Occupant classification ecu
Components
On-vehicle inspection
Inspect occupant classification ecu
(vehicle not involved in collision)
Perform a diagnostic system check (see page rs-
236).
Inspect occupant classification ecu
(vehicle involved in collision)
Perform a diagnostic system check (see p ...
Installation
Caution:
Be sure to read the precautionary notices concerning the
srs airbag system before servicing it (see page rs-1).
Install steering pad assembly
Support the steering pad with one hand as shown in
the illustration.
Connect the 2 airbag connectors.
Notice:
When handling t ...
Winter driving tips
Carry out the necessary preparations and inspections before
driving the vehicle in winter. Always drive the vehicle in a manner
appropriate to the prevailing weather conditions.
Preparation for winter
Use fluids that are appropriate to the prevailing outside temperatures.
Engine oil
E ...