Yamaha F200B, Service Manual

Page: 169 / 579

5-40
5
5. Turn the engine start switch to OFF, and
then disconnect the special service tool
and pressure pump.
6. Install the oil pressure sensor, and then
tighten it to the specified torque.
7. Remove the engine ECM cover.
8. Remove the engine ECM, and then dis-
connect the engine ECM couplers
b
and
c
.
9. Check the wiring harness for continuity.
10. Connect the engine ECM couplers.
NOTICE: Make sure that the rubber
seal is installed properly in each
engine ECM coupler.
11. Install the engine ECM, and then tighten
the engine ECM bolts to the specified
torque.
12. Install the engine ECM cover.
13. Connect the oil pressure sensor coupler.
Checking the water pressure sensor
(optional)
1. Remove the engine ECM cover.
2. Disconnect the water pressure sensor
coupler
a
.
3. Turn the engine start switch to ON, and
then measure the input voltage at the
water pressure sensor coupler.
4. Remove the water pressure sensor, and
then connect a pressure pump
1
and
the special service tool
2
.
Oil pressure sensor output voltage
(reference data):
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
(7.84 kgf/cm
2
, 113.7 psi)
Oil pressure sensor:
18 Nm (1.8 kgf·m, 13.3 ft·lb)
c
b
1
2 3
a
c
b
18
37
48
Wiring harness continuity:
a
Terminal 1–
c
Terminal 48
a
Terminal 2–
b
Terminal 18
a
Terminal 3–
c
Terminal 37
Engine ECM bolt:
7 N·m (0.7 kgf·m, 5.2 ft·lb)
Water pressure sensor input voltage:
Orange (O)–Black (B)
4.75–5.25 V
B O
a
Engine control system and component