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:
Repair procedures
Front Wheel Alignment
•
When using a commercially available computerized wheel alignment
equipment to inspect the front wheel alignment, always position
the vehi ...
Repair procedures
Inspection
[On vehicle inspection]
1.
Accelerate the engine to about 3,000 rpm 3 times or more.
2.
Remove the spark plug.
3.
Check the spark plug visually.
If the electrode is dry, the spark ...
Heated Oxygen Sensor (HO2S)
CVVT Oil Control Valve (OCV)