6-50 ENGINE GENERAL INFORMATION AND DIAGNOSIS
MAP Sensor Individual Check
1) Disconnect connector from MAP sensor (1).
2) Remove MAP sensor (1).
3) Arrange 3 new 1.5 V batteries (2) in series (check that total
voltage is 4.5 – 5.0 V) and connect its positive terminal to
"Vin" terminal of sensor and negative terminal to "Ground"
terminal. Then check voltage between "Vout" and "Ground".
Also, check if voltage reduces when vacuum is applied up to
400 mmHg by using vacuum pump (3).
If check result is not satisfactory, replace MAP sensor (1).
Output voltage (When input voltage is 4.5 – 5.5 V, ambient
temp. 20 – 30 °C, 68 – 86 °F)
ALTITUDE
(Reference)
(ft)
(m)
0
0
|
|
2 000
610
2 001
611
|
|
5 000
1 524
5 001
1 525
|
|
8 000
2 438
8 001
2 439
|
|
10 000
3 048
4) Install MAP sensor (1) securely.
5) Connect MAP sensor (1) connector securely.
BAROMETRIC
PRESSURE
(mmHg)
(kPa)
760
100
|
|
707
94
Under 707
94
over 634
|
85
Under 634
85
over 567
|
76
Under 567
76
over 526
|
70
OUTPUT
VOLTAGE
(V)
3.3 – 4.3
3.0 – 4.1
2.7 – 3.7
2.5 – 3.3