Toyota RAV4 manuals

Toyota RAV4 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:

Terminals of ecu (2005/11-2006/01)
Check air conditioning amplifier Measure the voltage and resistance of the connectors. Hint: Check from the rear of the connector while it is connected to the air conditioning amplifier. using an oscilloscope, check waveform 1. Can communication signal Hint: ...

Dtc check / clear
Check dtc (when using intelligent tester) Connect the intelligent tester (with can vim) to the dlc3. Turn the ignition switch on. Turn the tester on. Read the dtcs by following the prompts on the tester screen. Hint: Refer to the intelligent tester operator's manual for furth ...

General maintenance
Listed below are the general maintenance items that should be performed at the intervals specified in the “owner’s warranty information booklet” or “owner’s manual supplement/scheduled maintenance guide”. It is recommended that any problem you notice should be brought to the attentio ...

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