Checking The Tps; Adjusting The Tps - Yamaha F150B Service Manual

FUEL

Checking the TPS

1. Check the TPS exterior. Replace if
cracked.
2. Check the TPS electrical performance.
See "Checking the TPS" (5-16).

Adjusting the TPS

When adjusting the TPS, the output voltage
can also be measured using the "Engine
monitor" of the YDIS. To connect and operate
the YDIS, see the YDIS (Ver. 1.30 or later)
Instruction Manual.
1. Remove the intake silencer. See "Intake
silencer" (6-16).
2. Disconnect the throttle link joint assembly
a from the throttle lever 1 b.
a
3. Check that the throttle valves are fully
closed.
4. Disconnect the TPS coupler a, and then
connect the test harness (3 pin) c.
5. Turn the engine start switch to "ON."
6. Measure the TPS output voltage with the
throttle valves fully closed. If the output
voltage is out of specification, adjust the
position of the TPS d.
7. Loosen the TPS screws e and adjust the
position of the TPS d to get the specified
output voltage.
6-21
Fuel system
b
c
a
b
O P B
B
P
O
B
a c
Test harness (3 pins) c: 90890-06793
TPS output voltage:
Pink (P)–Black (B)
0.70 ± 0.02 V
TIP:
• To increase the output voltage, turn the
TPS d in direction b.
• To decrease the output voltage, turn the
TPS d in direction c.
8. Tighten the TPS screws e.
9. Connect the throttle link joint assembly
a to the throttle lever 1 b.
10. Operate the throttle valves several times
and make sure that the TPS output volt-
age is specification.
11. Disconnect the test harness (3 pins) c,
and then connect the TPS coupler a.
12. Install the intake silencer. See "Intake
silencer" (6-16).
d
c
e
P O
d