Yamaha F150B, Руководство по обслуживанию

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5-22
Engine control units and components
0
1
2
3
4
5
6
7
8
9
10
A
Checking the speed sensor (option)
1. Disconnect the speed sensor coupler
a
.
2. Turn the engine start switch to “ON,” and
then measure the input voltage at the
speed sensor coupler.
3. Remove the speed sensor, and then con-
nect the pressure pump
a
and test har-
ness (3 pins)
b
.
4. Apply positive pressure to the speed sen-
sor slowly, and then measure the output
voltage.
5. Turn the engine start switch to “OFF,” and
then disconnect the test harness
b
and
pressure pump
a
.
6. Remove the junction box cover, and then
disconnect the engine ECM coupler
b
.
7. Check the wiring harness for continuity.
8. Install the speed sensor, and then con-
nect the speed sensor coupler
a
.
9. Connect the engine ECM coupler
b
, and
then install the junction box cover.
Speed sensor input voltage
(reference data):
Orange (O)–Black (B)
4.75–5.25 V
Pressure pump
a
:
(commercially available)
Test harness (3 pins)
b
: 90890-06869
B O
a
a
b
b
B
B
G G/W
O
L
Speed sensor output voltage:
Blue (L)–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)
Wiring harness continuity:
Terminal 1–Terminal 10
Terminal 2–Terminal 8
Terminal 3–Terminal 12
b
10 8 12
1 3 2
a
b