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
System description
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 ...
Problem symptoms table
(2005/11-2006/01)
(2006/01- )
Hint:
*: For 4wd ...
Other materials:
Driver side seat belt warning light does not operate
Description
When the ignition switch is on, the center airbag sensor transmits front seat
inner belt status signals to
the combination meter through the can bus line. If the driver seat belt is not
fastened, the combination
meter blinks the driver side seat belt warning light. If the seat bel ...
Ig2 relay
On-vehicle inspection
Disconnect cable from negative battery
terminal
Caution:
Wait at least 90 seconds after disconnecting the
cable from the negative (-) battery terminal to
prevent airbag and seat belt pretensioner activation.
Remove ig2 relay
Remove the no. 1 Engine room re ...
Throttle actuator control system
Description
The throttle actuator is operated by the ecm, and opens and closes the
throttle valve using gears. The
opening angle of the throttle valve is detected by the throttle position (tp)
sensor, which is mounted on
the throttle body. The tp sensor provides feedback to the ecm in ord ...
