Toyota RAV4 manuals

Toyota RAV4 (XA40) 2013-2018 Service Manual: System description

  1. 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.

  1. 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.
  2. Torque sensor: the torque sensor detects the steering effort generated when the steering wheel is turned and converts it to an electrical signal.
  3. Eps motor: the eps motor is activated by the current from the power steering ecu and generates torque to assist the steering effort.
  4. 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 ...

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:

Transmission fluid temperature sensor "A" circuit
Description The automatic transmission fluid (atf) temperature sensor converts the atf temperature into a resistance value which is input into the ecm. The ecm applies a voltage to the temperature sensor through ecm terminal tho1. The sensor resistance changes with the atf temperature. ...

Steering angle sensor
Components Removal Precaution Caution: Be sure to read the "precaution" thoroughly before servicing (see page rs-1). Disconnect cable from negative battery terminal Caution: Wait at least 90 seconds after disconnecting the cable from the negative (-) battery termin ...

Pressure sensor circuit
Description This dtc is output when the refrigerant pressure is either extremely low (0.19 Mpa [2.0 Kgf/cm2, 28 psi] or less) or extremely high (3.14 Mpa [32.0 Kgf/cm2, 455 psi] or more). The air conditioning pressure sensor, which is installed on the pipe of the high pressure side, detec ...

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