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:
1. Engine coolant reservoir
2. Engine oil filler cap
3. Brake / clutch fluid reservoir
4. Air cleaner
5. Fuse box
6. Negative battery terminal
7. Positive battery terminal
8. Engine oil dipstick
9. Radiator cap
10. Windshield washer fluid reservoir
11. Automatic transaxle fluid ...
Repair procedures
Removal
1.Disconnect the negative (-) battery terminal.
2.Remove the steering column upper and lower shrouds after loosening the screws.
(Refer to Body - "Steering Column Shroud Panal")
3.Disconnect the wiper switch / washer switch connector (A).
4.Rem ...
Exhaust Gas Temperature Sensor (EGTS)
Accelerator Position Sensor (APS)