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:
Headlight aim
Vertical movement adjusting
bolts
Adjustment bolt A
Adjustment bolt B
Before checking the headlight
aim
Make sure the vehicle has a
full tank of gasoline and the
area around the headlight is
not deformed.
Park the vehicle on level
ground.
Make sure the tire inflation
pressure is at the ...
How to proceed with troubleshooting
Hint:
Use these procedures to troubleshoot the key reminder
warning system.
*: Use the intelligent tester.
Vehicle brought to workshop
Inspect battery voltage
Standard voltage:
11 to 14 v
Hint:
If the voltage is below 11 v, recharge or replace the battery
before proceedi ...
Cd player operation
Insert disc or select “cd” on the audio source selection screen
with a disc inserted to begin listening to a cd.
Audio control screen
Pressing the “audio” button displays the audio control screen from
any screens of the selected source.
Audio source selection screen
appears
Displ ...
