Checking The Oil Pressure Sensor; Fuel Control Unit And Component; Checking The Water Detection Switch - Yamaha F150A Service Manual

a
ISC valve input voltage:
Red/Yellow (R/Y)–Ground
12 V (battery voltage)
5. Turn the engine start switch to OFF.
6. Connect the ISC valve coupler.

Checking the oil pressure sensor

1. Disconnect the oil pressure sensor cou-
pler "a".
a
2. Turn the engine start switch to ON, and
then measure the input voltage at the oil
pressure sensor coupler.
Oil pressure sensor input voltage:
Orange (O)–Black (B)
4.75 V–5.25 V
3. Remove the oil pressure sensor, and
then connect the pressure pump "1" and
special service tool "2".
4. Apply positive pressure to the oil pres-
sure sensor slowly, and then measure
the output voltage at the specified pres-
sures.
R/Y
R/Y
Pressure pump "1":
Test harness (3 pins) "2": 90890-06869
Oil pressure sensor output voltage
(reference data):
B O
5. Turn the engine start switch to OFF, and
6. Install the oil pressure sensor. See "Cyl-
7. Connect the oil pressure sensor coupler.

Fuel control unit and component

Checking the water detection switch

1. Disconnect the water detection switch
2. Turn the engine start switch to ON, and
5-16
Fuel control unit and component
P/W
B
O
G/W B
2
(commercially available)
Pink/White (P/W)–Black (B)
2.5 V at 392.0 kPa
(3.92 kgf/cm 2 , 56.8 psi)
4.5 V at 784.0 kPa
2
(7.84 kgf/cm , 113.7 psi)
then disconnect the special service tool
and pressure pump.
inder block (F150A, FL150A)" (7-52).
coupler "a".
then measure the input voltage at the
water detection switch coupler.
G
2
1
0
1
2
3
4
5
6
7
8
9
10
A