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 ...
Other materials about Toyota Venza:
On-vehicle Inspection
ON-VEHICLE INSPECTION
PROCEDURE
1. INSPECT FLUID LEVEL
(a) Check the fluid level.
Text in Illustration
*1
MAX Line
*2
MIN Line
HINT:
If brake ...
Dtc Check / Clear
DTC CHECK / CLEAR
1. CHECK DTC
(a) Connect the Techstream to the DLC3.
(b) Turn the ignition switch to ON.
(c) Turn the Techstream on.
(d) Read the DTCs by following the directions on the Techstream screen.
HINT:
Refer to the Techstream operator's m ...
Adjustment
ADJUSTMENT
PROCEDURE
1. ADJUST PARK/NEUTRAL POSITION SWITCH ASSEMBLY
(a) Remove the transmission control shaft lever.
HINT:
See the steps from "Remove Cool Air Intake Duct Seal" through "Remove Park/Neutral
Position Switch Assembly" ...
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