Kia Picanto JA: Engine Control System / Manifold Absolute Pressure Sensor (MAPS)
Specifications
Pressure
[kPa (kgf/cm², psi)]
|
Output Voltage (V) [Vref=5V]
|
32.5 (0.33, 4.71)
| 0.5
|
284 (2.90, 41.19)
| 4.5
|
Description and operation
Installed
on the surge tank, Manifold Absolute Pressure Sensor (MAPS) is a
speed-density type sensor that senses absolute pressure of the surge
tank and transfers the analog signal proportional to the pressure to the
ECM. By using this signal, the ECM calculates the intake air amount and
engine speed.
The
MAPS consists of a piezo-electric element and a hybrid IC amplifying
the element output signal. This element, a silicon diaphragm type,
features pressure sensitive variable resistor effect of semi-conductor.
Due to 100% vacuum status and manifold pressure applied to both sides of
the sensor, this sensor can output analog signal by using the silicon
variation proportional to pressure change.
Schematic diagrams
Repair procedures
| 1. | Connect the KDS on the Data Link Connector (DLC). |
| 2. | Measure the output voltage of the MAPS at idle and IG ON.
Pressure
[kPa (kgf/cm², psi)]
|
Output Voltage (V) [Vref=5V]
| 32.5 (0.33, 4.71)
| 0.5
| 284 (2.90, 41.19)
| 4.5
|
|
| 1. | Turn the ignition switch OFF and disconnect the battery negative (-) terminal. |
| 2. | Disconnect the manifold absolute pressure sensor connector (A). |
| 3. | Remove the sensor (B) from the Intake manifold by loosening the mounting screws.
Manifold absolute pressure sensor mounting screw :
6.4 - 8.3 N·m (0.65 - 0.85 kgf·m, 4.7 - 6.1 lb·ft) |
 |
| •
| Tighten the component to the specified torques. |
| •
| Note
that internal damage may occur when the component is dropped. If the
component has been dropped, if it is damaged inspect before installing. |
| •
| Carefully insert the sensor into the installation hole without damaging it. |
|
| 1. | Install in the reverse order of removal. |
Troubleshooting
Specifications
Specification
Sensor
Item
Opening Percentage (%)
Output Voltage (V) [Vref = 5V]
TPS1 C...
Specifications
Specification
▷ Type: Thermistor type
Temperature
Resistance (kΩ)
°C
°F
-40 -40 40...
Other information:
Schematic diagrams
Schematic Diagram
Repair procedures
Inspection
1. After disconnecting the vapor hose from the PCV valve, remove the PCV valve.
2. Reconnect the PCV valve to the vapor hose.
3.
Run the engine at idle, then put a finger over the open end of the PCV
valve and make sure that intake manifold vacuum can be felt...
Your vehicle may be equipped with the
ISG system, which reduces fuel consumption
by automatically shutting
down the engine, when the vehicle is at
a standstill. (For example : red light,
stop sign and traffic jam)
The engine starts automatically as
soon as the starting conditions are
met...
Categories
WARNING
Windshield heating
Do not use the
or
position
during cooling operation in extremely
humid weather. The difference between
the temperature of the outside
air and that of the windshield
could cause the outer surface of the
windshield to fog up, causing loss of
visibility. In this case, set the mode
selection knob or button to the
position and fan speed control knob
or button to the lower speed.
For maximum defrosting, set the
temperature control to the extreme
right/hot position and the fan speed
control to the highest speed.
If warm air to the floor is desired
while defrosting or defogging, set the
mode to the floor-defrost position.
Before driving, clear all snow and ice
from the windshield, rear window,
outside rear view mirrors, and all side
windows.
Clear all snow and ice from the hood
and air inlet in the cowl grill to improve
heater and defroster efficiency
and to reduce the probability of fogging
up the inside of the windshield.
read more
ETC (Electronic Throttle Control) System
Intake Air Temperature Sensor (IATS)