Suzuki WagonR+ RB310 Service Manual page 2404

MAP Sensor Individual Check
1) Disconnect coupler from MAP sensor (1).
2) Remove MAP sensor (1).
3) Arrange 3 new 1.5 V batteries (2) in series (check that total volt-
age is 4.5 – 5.0 V) and connect its positive terminal to "Vin" termi-
nal 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).
Output voltage (Vin voltage 4.5 – 5.5 V, ambient temp. 20 –
30_C, 68 – 86_F)
ALTITUDE
(Reference)
(ft) (m)
0 0
j j j j
2 000 610
2 001 611
j j j j
5 000 1 524
5 001 1 525
j j
j j
8 000 2 438
8 001 2 439
j j j j
10 000 3 048
If check result is not satisfactory, replace MAP sensor (1).
4) Install MAP sensor (1) securely.
5) Connect MAP sensor (1) coupler securely.
ENGINE DIAGNOSIS 6-45
BAROMETRIC
PRESSURE
(mmHg) (kPa)
760 100
j j j j
707 94
94
Under 707
j j
over 634
85
85
Under 634
j
j
over 567
76
76
Under 567
j j
over 526
70
OUTPUT
VOLTAGE
(V)
3.3 – 4.3 3 3 4 3
3.0 – 4.1 3 0 4 1
2.7 – 3.7 2 7 3 7
2 5 – 3 3
2.5 – 3.3