Get Steering -> EPS (Electric Power Steering) Guide for Toyota Alphard Van First Generation (2002-2008)

Model Outline

for Technician

Engine

Chassis

Body

Body Electrical

Steering

EPS (Electric Power Steering)

– Motor drives the column shaft

Power Steering

ECU

P/S Warning Light

[Specification]

Vehicle Speed

Sensing Type

Type

Steering Column Assembly

• Brushless Motor with

Gear Ratio (Overall)

16.5

3.30

Rotational Angle Sensor

• Reduction Mechanism

• Hall IC Type Torque Sensor

No. of Turns Lock to Lock

Rack Stroke [mm (in.)]

143.8 (5.66)

59

Model Outline

for Technician

Engine

Chassis

Body

Body Electrical

Steering

System Diagram

Hall IC Type

Torque Sensors

Torque Sensor Signals

Reduction

Mechanism

Rotation Angle

Sensor Signal

Power

Steering ECU

Brushless Motor

(Resolver Type Rotational

Angle Sensor included)

Temp. Sensor

Boost Converter

V Bus No.1

Air

Combination

Meter

Skid Control

ECU

DLC3

ECM

Conditioning

Amplifier

DTC

Vehicle

Speed Signal

Engine

Speed Signal

P/S Warning Light

60

Model Outline

for Technician

Engine

Chassis

Body

Body Electrical

Steering

Steering Column and Brushless Motor

– DC brushless motor with resolver type rotation angle

sensor which reduces motor speed via worm gear and

transmits it to the column shaft

[Motor]

Rotation

Angle Sensor

Motor

Wheel

Gear

Rotor

Column

Shaft

Torque

Sensor

Worm Gear

Stator

Torsion Bar

Input Shaft

Wheel Gear

Output

Shaft

Column Shaft

61

Steering -> EPS (Electric Power Steering) for Your Toyota Alphard Van First Generation (2002-2008)

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