Yamaha T135S, Service Manual

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ELEC
SELF-DIAGNOSIS
8-46
TROUBLESHOOTING
Check:
1. throttle position sensor
2. thermo sensor
NOTE:
9
Before troubleshooting, remove the following
part(s):
1. side cowlings (left and right)
2. front cowling
3. center panel (lower)
9
Troubleshoot with the following special tool(s).
1. Wire harness
9
Check the wire harness for continuity.
Refer to “CIRCUIT DIAGRAM”.
9
Is the wire harness OK?
YES NO
Repair or replace the
wire harness.
Pocket tester
90890-03112
The coolant temperature warning indicator
light starts to display the self-diagnosis
sequence.
1. Throttle position sensor
CIRCUIT DIAGRAM
0
C.D.I. unit
e
Throttle position sensor
(BLACK) (BLACK)
(BLACK)
Br Br
L / Y
W
B
B
B
O O
B / L
G / R
G / R
G / W
B
W / Y Y
B / L
B / L
L Y
L P
W
Br B
O
W W
B
L
B
L
R
L
Y Y
L
L
P
L
Br
B / L
B / L
B / L
Br
G / W
Y / W
Y / W
G / R
G / R
Br Br
9
0
w
e
r
y
t
2. Throttle position sensor
9
Check the throttle position sensor for conti-
nuity.
Refer to “CHECKING AND ADJUSTING THE
THROTTLE POSITION SENSOR” in chapter
6.
9
Is the throttle position sensor OK?
YES NO
Replace the throttle
position sensor. Replace the C.D.I
unit.
5YP-F8197-E0_8_1 05.6.27 19:28 Page 46
Yamaha T135 Service Manual
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