2007 KIA CARNIVAL steering gear

2007 > 2.7L V6 GASOLINE >
TROUBLE SHOOTING
Symptom Probable cause Remedy
There is no change made in rack
stroke even though turning the VRS
switch ON or OFF. a.
VRS operating unit
b. VRS control module
c. VRS switch a.
Inspect the VRS operating unit.
b. Check Input/ output signal of the
VRS control module.
c. Inspect connection of the VRS
switch.
LED is not illuminated even though
turning the VRS switch ON. VRS switch a.
Inspect connection of the VRS
switch.
b. Check the LED for damage.
Inspection of the rack stroke
1.Is the rack stoke (the maximum steering angle) changed when pressing the VRS switch ?
▶ The VRS system is in normal condition.
▶ Go to step 2.
2. Measure the resistance of the VRS operating unit.
(1) Disconnect the VRS operating unit connector.
(2) Measure the resistance between the terminal No.1 and No.2.
Repeat the terminal No.3 and No.4.
Is the measured resistance within standard value ?
4 ~ 20 Ω → Normal condition (standard value)
1 Ω or below → Short
100 Ω or above → Open circuit
▶ Go to step 3.
▶ Repair or replace the power steering gear box.
3. Measure the output voltage of the VRS control module.
(1) Disconnect the VRS control module connector.
(2) Connect 9 ~ 15 V power between the terminal No.3 and No.4.
(3) Measure the output voltage (to DC motor) between the terminal No.5 ~ 8.
Is the voltage measured within standard value ?
Supplied power Measured output voltage

2007 > 2.7L V6 GASOLINE >
Description
The VRS operating unit installed on both ends of the steering gear box can change the rack stoke by changing angle
of the gear stopper.

2007 > 2.7L V6 GASOLINE >
DESCRIPTION
GENERAL DATA
The steering angle speed sensor detects the angle of the steering wheel in order to which direction a user chooses.
MEASUREING PRINCIPLE
A non contact, analog angle sensor carrying out absolute measuring by the use of the Anisotropic - Magneto- Resistive
effect (AMR).Measuring of the absolute angle by means of a toothed measuring gear with magnetic properties in
combination with different ratios. Corresponding AMR elements that change their electrical resistance according to the
magnetic field direction detect the angle position of the measuring gears.A micro- controller decodes the measured
voltage signals after A/D converting with the help of a mathematical function. Output of the digital angle value and
velocity via CAN- interface.
SPECIFICATION
Description Specification
Operating voltage 8~16 V
Operating temperature - 40 ~ 85 °C
Current consumption Max.150 mA
Steering angle velocity Max. ±2000 °/sec
Connection delay time t < 200 ms
Reverse voltage - 13.5 V
Measuring range Angle
- 780 ° ~ 779 °
Angular velocity 0~ 1016 °/s
Nonlinearity angle - 2.5 ° ~ +2.5 °
Hysteresis angle 0 ° ~ 5 °
Rotational friction torque measuring 10 °/s
CIRCUIT DIAGRAM( STEERING WHEEL SPEED ANGLE SENSOR)
STEERING ANGLE SENSOR (SAS) calibration
1.PURPOSE OF calibration
a. On vehicle control, an ESP analyzes the intention of the driver.
b. An ESP recognizes a steering angle which a driver rotates through the steering angle sensor.