Hyundai i-30: Engine Control System / Manifold Absolute Pressure Sensor (MAPS)
Description and operation
Manifold Absolute Pressure Sensor (MAPS) is a speed-density type sensor and
is installed on the surge tank. It 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 quantity and engine speed.
The MAPS consists of a piezo-electric element and a hybrid IC amplifying the
element output signal. The element is silicon diaphragm type and adapts pressure
sensitive variable resistor effect of semi-conductor. Because 100% vacuum and
the manifold pressure apply to both sides of the sensor respectively, this sensor
can output analog signal by using the silicon variation proportional to pressure
change.

Specifications
Pressure [kPa (kg/cm², psi)]
|
Output Voltage (V)
|
10 (0.10, 1.45)
|
0.5
|
40 (0.41, 5.80)
|
0.913
|
80 (0.82, 11.60)
|
1.465
|
120 (1.22, 17.40)
|
2.017
|
160 (1.63, 23.21)
|
2.569
|
200 (2.04, 29.01)
|
3.12
|
220 (2.24, 31.91)
|
3.396
|
240 (2.45, 34.81)
|
3.672
|
280 (2.86, 40.61)
|
4.224
|
300 (3.06, 43.51)
|
4.5
|
Troubleshooting

Schematic diagrams

Harness Connector

Repair procedures
1. |
Connect the diagnostic tool on the Data Link Connector (DLC).
|
2. |
Measure the output voltage of the MAPS at idle and IG ON.
Condition
|
Output Voltage (V)
|
IG ON
|
3.9 - 4.1
|
Idle
|
0.8 1.6
|
|
1. |
Turn the ignition switch OFF and disconnect the battery negative (-)
cable.
|
2. |
Disconnect the manifold absolute pressure sensor connector (A).
|
3. |
Remove the installation bolt (B), and then remove the sensor from the
surge tank.
Tightening Torque :
9.8 - 11.8 N.m (1.0 - 1.2 kgf.m, 7.2 - 8.7 lb-ft)
|

|
•
|
Install the component with the specified torques.
|
•
|
Note that internal damage may occur when the component is dropped.
If the component has been dropped, inspect before installing.
|
|
•
|
Insert the sensor in the installation hole and be careful not
to damage.
|
|
1. |
Install in the reverse order of removal.
|
Description and operation
Description
The Electronic Throttle Control (ETC) System consists of a throttle body with
an integrated control motor and throttle position sensor (TPS)...
Description and operation
Description
Intake Air Temperature Sensor (IATS) is included inside Manifold Absolute Pressure
Sensor and detects the intake air temperature...
Other information:
Components and components location
Components
Connector [A]
Pin NO
Function
Pin NO
Function
1
Low
4
Middle Low
2
Common
5
Middle High
3
Ground
6
High
Connector [B]
Pin NO
Function
Pin NO
Function
1
Battery (+)
21
IGN2
2
ISG B+
22
IGN1
3
ILL+ (TAIL)
23
-
4
Sensor REF (+5V)
24
-
5
Mode actuator feedback
25
-
6
Temperature actuator feedback
26
-
7
Intake actuator feedback
27
MAX Blower ON Signal
8
EVAP Sensor (+)
28
PTC Relay 3
9
AMB Sensor (+)
29
PTC Relay 2
10
Mode actuator (Vent)
30
PTC on signal
11
Mode actuator (Defrost)
31
Detent OUT (-)
12
Temperature actuator (Cool)
32
-
13
Temperature actuator (Warm)
33
C_CAN High
14
Intake actuator (Fresh Air)
34
C_CAN Low
15
Intake actuator (Recirculated Air)
35
-
16
HTD (Rear defog indicator)
36
ECV +
17
Rear defog switch
37
ECV- (Ground)
18
-
38
Sensor ground
19
Blower ON signal to common
39
Ground
20
ILL- (RHEO)
40
Ground
Repair procedures
Replacement
1...
Petrol engine
The fuel label is attached on the fuel
filler door.
A. Octane rating of unleaded petrol
1) RON/ROZ : Research Octane
Number
2) (R+M)/2, AKI : Anti Knock Index
B. Identifiers for Petrol-type fuels
❈ This symbol means usable fuel...
Categories
Opening the bonnet

1. Park the vehicle and set the parking
brake.
2. Pull the release lever to unlatch
the bonnet. The bonnet should
pop open slightly.

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