4-10
Outboard motor troubleshooting
Troubleshooting the power unit
using the diagnostic flash indicator
1. Connect the special service tool “1”.
TIP:
Before performing this diagnosis, make sure
to connect all of the electrical wires properly.
a. Diagnostic test lead (Blue/White)
2. Start the engine and let it idle.
3. Check the flash patterns of the trouble
codes.
TIP:
When more than one trouble code is
detected, the indicator of special service tool
flashes in the pattern of the lowest trouble
code. After that trouble code is corrected, the
indicator flashes in the pattern of the next
lowest the trouble code. This continues until
all the trouble codes are detected and cor-
rected.
Example: The illustration indicates code
number 23.
a. Light on, 0.33 seconds
b. Light off, 4.95 seconds
c. Light off, 0.33 seconds
d. Light off, 1.65 seconds
4. If a trouble code is detected, see “Trouble
code and checking step” (4-8).
Diagnostic flash “1”: 90890-06873
1
a
23
aa ad
c
baa
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