A large number of ecu controlled systems are used in the rav4. In general, ecu controlled systems are considered to be very intricate, requiring a high level of technical knowledge to troubleshoot. However, most problem checking procedures only involve inspecting the ecu controlled system's circuits one by one. An adequate understanding of the system and a basic knowledge of electricity is enough to perform effective troubleshooting, accurate diagnoses and necessary repairs.
For using intelligent tester

Connect the cable of the intelligent tester to the dlc3, turn the ignition switch on and attempt to use the tester. If the display indicates that a communication error has occurred, there is a problem either with the vehicle or with the tester.
* If communication is normal when the tester is connected to another vehicle, inspect the dlc3 of the original vehicle.
* If communication is still not possible when the tester is connected to another vehicle, the problem may be in the tester itself. Consult the service department listed in the tester's instruction manual.
Precaution
Inspection procedure for vehicle involved
in accident
Perform the zero point calibration and sensitivity
check if any of the following conditions apply.
The occupant classification ecu is replaced.
Accessories (seat cover etc.) Are installed.
The front passenger seat is remove ...
Opening/closing the back
door (vehicles without
power back door)
â– Open
Raise the back door while
pressing up the back door
opener switch.
â– Close
Lower the back door using the
back door handle A, and make
sure to push the back door
down from the outside to close
it.
Be careful not to pull the back door
sideways when closing the back
door with the handle.
...
Low battery positive voltage
Description
When there is an abnormality in the power supply circuit of the brake
actuator (skid control ecu), the skid
control ecu sets a dtc and the operation is prohibited by the fail-safe
function. This dtc is set when the
voltage supplied to terminal ig1 is outside the dtc detection ...