Toyota RAV4 (XA40) 2013-2018 Service Manual: Different diameter tire malfunction
Description
The skid control ecu measures the speed of each wheel by receiving signals from the speed sensor.
These signals are used for recognizing that all 4 wheels are operating properly. Therefore, all wheel signals must be equal.
Inspection procedure
- Check tire size
- Check the diameter of all 4 tires.
Ok: diameter of all 4 tires are equal.
- Check speed sensor rotor
- Remove the drive shaft, and check around the speed sensor rotor.
Ok: no scratches or foreign matter on the sensor tip.
- Check speed sensor
- Check the speed sensor circuit (see page bc-64 or bc- 70).
- Check wire harness (skid control ecu - each speed sensor)
- Check the speed sensor circuit (see page bc-69 or bc- 70).
- Reconfirm dtc
- Clear the dtcs (see page bc-47).
- Drive the vehicle at more than 20 km/h (12 mph) for more than 60 seconds.
- Check if the same dtcs are detected.
Result 
Replace abs and traction actuator assembly
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 sec ...
Downhill assist control operation switch (test mode dtc)
Description
The downhill assist control switch is connected to the skid control ecu in
the abs and traction
actuator.
Dtc c1379/74 can be detected when the downhill assist control switch se ...
Other materials:
Dynamic radar cruise control
with full-speed range
In vehicle-to-vehicle distance
control mode, the
vehicle automatically accelerates,
decelerates and
stops to match the speed
changes of the preceding
vehicle even if the accelerator
pedal is not depressed.
In constant speed control
mode, the vehicle runs at a
fixed speed.
Use the dynamic radar
cru ...
Assist grips
An assist grip installed on the ceiling
can be used to support your
body while sitting on the seat.
Caution
Assist grip
Do not use the assist grip when getting in or out of the vehicle or
rising from
your seat.
Doing so could damage the assist grip, or could cause you to injure yourse ...
Disassembly
Remove radiator grille sub-assembly
Remove the 4 bolts and 4 nuts.
Detach the 6 claws and remove the radiator grille.
Remove no. 1 Radiator grille lower
Detach the 18 claws and remove the radiator grille.
Remove no. 2 Radiator grille lower
Detac ...
