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 ...
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Press the “media” button repeatedly until “usb” is displayed.
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System diagram
...
Knock sensor 1 circuit
Description
Flat type knock sensors (non-resonant type) have structures that can detect
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