Hyundai Palisade: Engine Control System / Accelerator Position Sensor (APS)
Description and operation
Installed on the accelerator pedal module, the Accelerator Position Sensor (APS)
detects the rotation angle of the accelerator pedal. The APS is one of the most
important sensors in engine control system. Therefore, each of the two sensors
comprising the APS has individual power and ground line. The second sensor monitors
the first and its output voltage is half the first one. If the ratio of the
sensor 1 to 2 is out of the range (approximately 1/2), the diagnostic system
judges that it is abnormal.
![Hyundai Palisade. Description and operation](images/accelerator_position_sensor_aps_-525/390/hyundai_palisade__description_and_operation_980.gif)
Specifications
Accelerator
Position
|
Output Voltage (V) [Vref = 5V]
|
APS1
|
APS2
|
C.T
|
0.7 - 0.8
|
0.33 - 0.43
|
W.O.T
|
3.85 - 4.35
|
1.93 - 2.18
|
![Hyundai Palisade. Specifications](images/accelerator_position_sensor_aps_-525/390/hyundai_palisade__specifications_981.gif)
Schematic diagrams
![Hyundai Palisade. Schematic diagrams](images/accelerator_position_sensor_aps_-525/390/hyundai_palisade__schematic_diagrams_982.gif)
Harness Connector
![Hyundai Palisade. Schematic diagrams](images/accelerator_position_sensor_aps_-525/390/hyundai_palisade__schematic_diagrams_983.gif)
Repair procedures
1. |
Connect the diagnostic tool on the Data Link Connector (DLC).
|
2. |
Switch "ON" the ignition.
|
3. |
Measure the output voltage of the APS 1 and 2 at C.T and W.O.T.
Accelerator Position
|
Output Voltage (V) [Vref = 5V]
|
APS1
|
APS2
|
C.T
|
0.7 - 0.8
|
0.33 - 0.43
|
W.O.T
|
3.85 - 4.35
|
1.93 - 2.18
|
|
1. |
Switch "OFF" the ignition and disconnect the negative (-) battery terminal.
|
2. |
Disconnect the accelerator position sensor connector (A).
|
3. |
Remove the accelerator position sensor (B) after loosening the mounting
bolts.
Accelerator pedal sensor mounting bolt :
8.8 - 13.7 N.m (0.9 - 1.4 kgf.m, 6.5 - 10.1 lb-ft)
|
![Hyundai Palisade. Repair procedures](images/accelerator_position_sensor_aps_-525/390/hyundai_palisade__repair_procedures_984.gif)
|
1. |
Install in the reverse order of removal.
|
Description and operation
Description
Continuous Variable Valve Timing (CVVT) system advances or retards the valve
timing of the intake and exhaust valve in accordance with the ECM control signal
which is calculated by the engine speed and load...
Description and operation
Description
Based on information from various sensors, the ECM can calculate the fuel amount
to be injected...
Other information:
Repair procedures
Removal and Installation
1.
Remove the engine cover (A).
•
Lift up the lower end of engine cover, then left and
right alternately...
Repair procedures
Disassembly
•
Be careful not to damage the parts located under the vehicle
(floor under cover, fuel filter, fuel tank and canister) when
raising the vehicle using the lift...
Categories
![Hyundai Palisade. in the Front Passenger's Seat](images/books/1/hyundai_palisade_in_the_front_passenger_s_seat_109.png)
Even though your vehicle is equipped
with the OCS, never install a child
restraint in the front passenger's seat.
An inflating air bag can forcefully
strike a child or child restraint resulting
in serious or fatal injury.
read more