Kia Sportage: Engine Control System / Rail Pressure Sensor (RPS) Troubleshooting

Service data review releated with fuel pressure sensor at idle and acceleration.
(Inspect low pressure fuel line between fuel pump and high pressure pump first
when the pressure of low pressure line is displayed low at idle.)
A : Idle
B : Acceleration
Inspection
1.
Connect the KDS/GDS on the Data Link Connector (DLC).
2.
Measure the output voltage and fuel pressure of the RPS at idle a ...
Specification
Accelerator
Position
Output Voltage (V) [Vref = 5V]
APS1
APS2
C.T
0.7 - 0.8
...
Other information:
Component Location
1. Rear bumper beam assembly
...
Removal
1.
Loosen the drain plug, and drain the coolant. Remove the radiator cap
to help drain the coolant faster.
(Refer to Cooling System - "Coolant")
2.
Disconnect the oil cooler coolant hoses (A).
...