Toyota Venza manuals

Toyota Venza: System Description

SYSTEM DESCRIPTION

1. DESCRIPTION

  • The 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 ECU adjusts the steering effort so that it is lighter during low speed driving and heavier during high speed driving.

(a) 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 brake actuator assembly (skid control ECU).

(b) Torque sensor:

The torque sensor detects the steering effort generated when the steering wheel is turned and converts it to an electrical signal.

(c) Power steering motor:

The power steering motor is activated by the current from the power steering ECU and generates torque to assist the steering effort.

(d) 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.

How To Proceed With Troubleshooting
CAUTION / NOTICE / HINT HINT: Use the following procedure to troubleshoot the power steering system. *: Use the Techstream. PROCEDURE 1. VEHICLE BROUGHT ...

Calibration
CALIBRATION 1. ROTATION ANGLE SENSOR INITIALIZATION AND TORQUE SENSOR ZERO POINT CALIBRATION NOTICE: Clear the rotation angle sensor calibration value, initialize the rotation angle sensor, and c ...

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Air Conditioning Control Panel Circuit
DESCRIPTION This circuit consists of the air conditioning control assembly and the A/C amplifier. When the air conditioning control assembly is operated, signals are transmitted to the A/C amplifier through the LIN communication system. If the LIN commun ...

Removal
REMOVAL CAUTION / NOTICE / HINT HINT: Use the same procedure for the RH side and LH side. The procedure listed below is for the LH side. PROCEDURE 1. REMOVE FRONT WHEEL 2. REMOVE FRONT AXLE SHAFT NUT 3. SEPARATE FRONT SPEED SENSOR ...

Installation
INSTALLATION PROCEDURE 1. INSTALL TRANSFER ASSEMBLY (a) Install the transfer assembly to the automatic transaxle assembly with 2 new bolts and the 6 nuts. Torque: 69 N·m {700 kgf·cm, 51 ft·lbf} NOTICE: Install the ...

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