Kia Optima: Engine Control System / Accelerator Position Sensor (APS)
Specifications
Accelerator
|
Output Voltage (V) [Vref = 5.0V]
|
Position
|
APS1
|
APS2
|
C.T
|
0.7 - 0.8
|
0.33 - 0.43
|
W.O.T
|
4.13 - 4.22
|
2.04 - 2.13
|
Description and operation
| • |
Accelerator Position Sensor (APS) is installed on the accelerator pedal
module and detects the rotation angle of the accelerator pedal.
|
| • |
The APS is one of the most important sensors in engine control system,
so it consists of the two sensors which adapt individual sensor power and
ground line.
|
| • |
The second sensor monitors the first sensor and its output voltage is
half of the first one.
|
| • |
If the ratio of the sensor 1 and 2 is out of the range (approximately
1/2), the diagnostic system judges that it is abnormal.
|
Schematic diagrams
Harness Connector
Repair procedures
| 1. |
The engine control system can be more quickly diagnosed for troubles
by using the vehicle diagnostic system (KDS). (Refer to "DTC guide")
KDS provides the following information.
| (1) |
Self diagnosis : Inspects and displays diagnostic trouble code
(DTC)
|
| (2) |
Sensor data : Checks the system input/output value status
|
| (3) |
Forced operation : Checks the system operating status
|
| (4) |
Additional function : Controls system options, zero point adjustment
and other functions
|
|
| 1. |
Connect the KDS on the Data Link Connector (DLC).
|
| 2. |
Turn the ignition switch ON.
|
| 3. |
Measure the output voltage of the APS 1 and 2 at C.T and W.O.T.
Accelerator
|
Output Voltage (V) [Vref = 5.0V]
|
Position
|
APS1
|
APS2
|
C.T
|
0.7 - 0.8
|
0.33 - 0.43
|
W.O.T
|
3.98 - 4.22
|
1.93 - 2.17
|
|
| 1. |
Disconnect the negative battery terminal.
|
| 2. |
Open the mounting cap (A).
|
| 3. |
Remove the accelerator pedal module (A) after loosening the mounting
bolts.
|
Tightening torque :
6.9 - 10.7 N·m (0.7 - 1.1 kgf·m, 5.0 - 7.9 lb·ft)
|
|
| 4. |
Remove the connector (A) from the accelerator pedal module (B).
|
| • |
Install the component to the specified torque.
|
| • |
Note that internal damage may occur when the component is dropped.
In this case, use it after inspecting.
|
|
| 1. |
Install in the reverse order of removal.
|
Description and operation
Description
•
Heated Oxygen Sensor (HO2S), consisting of zirconium and alumina, is
installed on both upstream and downstream of the Manifol ...
Specifications
Specification
Item
Specification
Coil Resistance (Ω)
9.4 - 10.4 [20°C(68°F)]
Description and operat ...
Other information:
When the “Check System” warning message appears, the system is not working properly.
In this case, take your vehicle to an authorized Kia dealer and have the system
checked.
WARNING
The Driver Attention Warning system is not a substitute for safe driving
practices. It is the respon ...
Repair procedures
Inspection
Steering Wheel Play Inspection
1.
Turn the steering wheel so that the front wheels are facing straight
ahead.
2.
Measure the distance that the steering wheel can be turned without moving
the fron ...
Heated Oxygen Sensor (HO2S)
CVVT Oil Control Valve (OCV)