Hyundai Santa Fe: Engine Control System / Accelerator Position Sensor (APS). Description and operation
On electronic injection systems, there is no longer a load lever that mechanically
controls the fuelling. The flow is caculated by the ECM depending on a number
of parameters, including pedal position, which is measured using a potentiometer.
The pedal sensor has two potentio-meters whoses slides are mechanically solid.
The two potentiometers are supplied from distinct and different power sources
so there is built in redundancy of information giving reliable driver's request
information. A voltage is generated across the potentiometer in the acceleration
position sensor as a function of the accelerator-pedal setting. Using a peogrammed
characteristic curve, the pedal's position is then calculated from this voltage.
Inspection
1.
Turn the ignition switch OFF.
2.
Disconnect the HO2S connector.
3...
Specification
Accelerator Position
Output Voltage (V) [Vref=5V]
APS 1
APS 2
C...
Other information:
WARNING
To prevent SERIOUS INJURY or DEATH to you or bystanders, always follow these
precautions when working near or handling the battery:
Always read and follow instructions carefully when handling a battery.
Wear eye protection designed to protect the eyes from acid splashes...
Adjustment
Description
The friction material inside the coupling will degrade over time. Therefore,
corresponding compensation values must be referenced and entered after replacing
the controller or the coupling.
Compensation Requirement and Procedure
1...
Categories
Speedometer
The speedometer indicates the speed of the vehicle and is calibrated in miles
per hour (MPH) and/or kilometers per hour (km/h).
Tachometer
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