Yamaha F80BETL Service Manual page 240

TRBL
SHTG
4. If a flash pattern listed in the diagnostic
code chart is displayed, check the mal-
functioning part according to the flash
pattern.
NOTE:
When more than one problem is detected,
the light of the special service tool flashes in
the pattern of the lowest numbered problem.
After that problem is corrected, the light
flashes in the pattern of the next lowest num-
bered problem. This continues until all of the
problems are detected and corrected.
Code
1 Normal
13 Incorrect pulser coil signal
Incorrect cooling water
15
temperature sensor signal
Incorrect throttle position sensor
18
signal
19 Incorrect battery voltage
Incorrect sensor assembly
23
(intake air temperature) signal
Incorrect shift position switch
28
signal
Incorrect sensor assembly
29
(intake air pressure) signal
Incorrect idle speed control
37
signal
Incorrect engine stop lanyard
44
switch signal
49 Over cool signal
9-19
Troubleshooting
Symptom
6D93G11