Kia Picanto: Engine Control System / Rail Pressure Sensor (RPS)
Specifications
Item
|
Specification
|
Rated Voltage (V)
| 5
|
Operating Voltage (V)
| 4.75 - 5.25
|
Connector
| 3
|
Pressure
|
Output Voltage (V) [Vref=5V]
|
bar
|
[MPa (kgf/cm², psi)]
|
0
| 0 (0, 0)
| 0.5
|
175
| 14 (142, 2031)
| 2.5
|
350
| 28 (286, 4061)
| 4.5
|
Description and operation
Installed
on the delivery pipe, the Rail Pressure Sensor (RPS) measures the
instantaneous fuel pressure in the delivery pipe. The sensing element
(semiconductor element) built in the sensor converts the pressure into a
voltage signal, which is used by the ECM to precisely control the
injection amount and time. Also, if the actual pressure calculated from
the sensor output signal differs from the target rail pressure, it
controls the rail pressure by using the rail pressure control valve.
Schematic diagrams
Repair procedures
| 1. | Connect the KDS on the Data Link Connector (DLC). |
| 2. | Measure the output voltage of the RPS at idle and various engine speed.
Pressure
|
Output Voltage (V) [Vref=5V]
|
bar
|
[MPa (kgf/cm², psi)]
| 0
| 0 (0, 0)
| 0.5
| 175
| 14 (142, 2031)
| 2.5
| 350
| 28 (286, 4061)
| 4.5
|
|
| 1. | Release the residual pressure in fuel line.
(Refer to Fuel Delivery System - “Release Residual Pressure in Fuel Line”)
|
| 2. | Turn the ignition switch OFF and disconnect the battery negative (-) terminal. |
| 3. | Remove the intake manifold.
(Refer to Engine Mechanical System - “Intake Manifold")
|
| 4. | Remove the delivery pipe & injector assembly.
(Refer to Fuel Delivery System - “Delivery Pipe")
|
| 5. | Disconnect the rail pressure sensor connector (A), and then remove the sensor (B) from the delivery pipe.
Rail Pressure Sensor:
30.0 - 35.0 N·m (3.1 - 4.1 kgf·m, 22.1 - 29.5 lb·ft) |
 |
| •
| Install the component to the specified torques. |
| •
| Note that internal damage may occur when the component is dropped. If the component has been dropped, inspect before installing. |
|
| 1. | Install in the reverse order of removal. |
Troubleshooting
Specifications
Specification
Exhaust Gas Temperature Sensor (EGTS) #1, 2
▷ Type : Thermistor type
Temperature [°C (°F)]
Resistance ( ...
Specifications
Specification
Accelerator
Position
Output Voltage (V) [Vref = 5V]
...
Other information:
Description and operation
Description
Vehicles
have many control units that consume electricity. Each unit controls
its own system based on information from various sensors. Hence, a
stable power supply to these sensors is essential to obtain diverse
information. Battery sensor (A) is ...
Repair procedures
Removal
1.Disconnect the negative (-) battery terminal.
2.Remove the crash pad lower panel.
(Refer to Body - "Crash Pad Lower Panel")
3.Remove the steering column upper and lower shroud panel.
(Refer to Body - "Steering Column Shroud Panel")
...
Exhaust Gas Temperature Sensor (EGTS)
Accelerator Position Sensor (APS)