Toyota RAV4 (XA40) 2013-2018 Service Manual: System description
- Description
The eps (electronic power steering) system generates torque through the operation of the motor and the reduction gear installed on the column shaft in order to assist steering effort.
The power steering ecu determines directions and the amount of assisting power in accordance with vehicle speed signals and signals from the torque sensor built into the steering column assembly. As a result, the power steering adjusts the steering effort so that it is lighter during low speed driving and heavier during high speed driving.
- Power steering ecu: the power steering ecu calculates assisting power based on steering torque signals from the torque sensor and vehicle speed signals from the skid control ecu.
- Torque sensor: the torque sensor detects the steering effort generated when the steering wheel is turned and converts it to an electrical signal.
- Eps motor: the eps motor is activated by the current from the power steering ecu and generates torque to assist the steering effort.
- Motor rotation angle sensor: the motor rotation angle sensor consists of the resolver sensor, which excels in reliability and durability. The rotation angle sensor detects the rotation angle of the motor and outputs it to the power steering ecu. As a result, it ensures efficient eps control.
Parts location
System diagram
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How to proceed with troubleshooting
Hint:
Perform troubleshooting in accordance with the following
flowchart.
*: Use the intelligent tester.
Vehicle brought to workshop
Inspect battery voltage
Standard voltage:
11 ...
Other materials:
Removal
Drain differential oil
Remove rear wheel
Remove tailpipe assembly
Remove the tailpipe (see page ex-2).
Remove center exhaust pipe assembly
Remove the center pipe (see page ex-2).
Remove propeller with center bearing
shaft assembly (see page pr-3)
Remove rear suspen ...
Listening to a usb
memory device
Connecting a usb memory device enables you to enjoy music
from the vehicle speakers.
Touch “usb” on the audio source selection screen.
Connecting a usb memory device
Audio control screen
Pressing the “audio” button displays the audio control screen from
any screens of the selected so ...
Correct use of the seat
belts
Extend the shoulder belt so
that it comes fully over the
shoulder, but does not come
into contact with the neck or
slide off the shoulder.
Position the lap belt as low as
possible over the hips.
Adjust the position of the
seatback.
Sit up straight and well back
in the seat.
Do not twis ...
