Yamaha F150B, Service Manual

Page: 141 / 458

5-16
Engine control units and components
0
1
2
3
4
5
6
7
8
9
10
A
5. Turn the engine start switch to “OFF.”
6. Remove the main relay.
7. Check the wiring harness for continuity.
8. Install the main relay.
9. Connect the engine ECM coupler
a
, and
then install the junction box cover.
Checking the TPS
1. Connect the YDIS to display “Throttle
position sensor.”
2. Start the engine and warm up, and then
turn it off.
3. Turn the engine start switch to “ON,” and
then measure the output voltages of TPS
and the throttle valve opening angle
when the remote control lever is at the
fully closed position
a
and fully open
position
b
.
Engine ECM input voltage
(reference data):
Terminal 13–Ground
11.2 V
Wiring harness continuity:
Terminal 16–Terminal
b
Terminal 30–Terminal
c
a
13
a
16
30
c
b
TPS out put voltage and throttle
valve opening angle (reference data):
Fully closed
a
Fully open
b
Output
voltage
0.703 V 4.255 V
Opening
angle
0.1° 88.6°
F
N
a
b
R