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

- Inspect battery voltage
Standard voltage::
11 to 14 v
If the voltage is below 11 v, recharge or replace the battery
before proceeding.

- Check can bus line
- Check the can bus line (see page ca-75).

- Check installed systems (ecu and sensor) that use can communication

- Check and clear dtc*

- Check intelligent tester via can vim*
- Select "communication bus check" (see page ca-
34).

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.


- 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).

- Circuit inspection

- Identify problem

- Repair or replace

- Confirmation test

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:
General maintenance
Listed below are the general maintenance items that should be
performed at the intervals specified in the “owner’s warranty
information booklet” or “owner’s manual supplement/scheduled
maintenance guide”. It is recommended that any problem
you notice should be brought to the attentio ...
Steering angle sensor zero point malfunction
Description
The skid control ecu learns the steering sensor zero point every time the
ignition switch is turned on and
the vehicle is driven at 35 km/h (22 mph) or more for approximately 5 seconds.
The ecu also stores the
previous zero point.
If front wheel alignment or the steering wh ...
Throttle / pedal position sensor / switch "d" circuit range / performance
Description
Hint:
Refer to dtc p2120 (see page es-282).
Monitor description
When the difference between the output voltages of vpa and vpa2 deviates from
the standard, the ecm
determines that the accelerator pedal position (app) sensor is malfunctioning.
The ecm turns on the mil
and th ...