BRP E-TEC EVINRUDE Manual page 82

System Analysis
Diagnostic Procedures
•
Use the Evinrude
Occurred Faults screen to check for current ser-
vice codes. If there are multiple occurred sensor
codes, inspect all 5 V sensor circuits for broken
or grounded wiring.
•
Perform a Static Ignition test using Evinrude
Diagnostics software and an inductive timing
light. Refer to Static Ignition Test on p. 87.
•
If ignition test indicates steady spark, refer to
Fuel Delivery Tests on p. 90.
Outboard runs, low on power, misfires:
•
Check the EMM LED Indicators for system sta-
tus information. Refer to EMM LED Indicators
on p. 84.
•
Use the Evinrude Diagnostics software Monitor
screen to check system (55 V) and TPS volt-
ages. System voltage should be steady, and
TPS voltage should be between 0.2 and 4.85 V.
IMPORTANT:
Use a digital multimeter to check
voltage on external circuits only when necessary.
All EMM output currents are DC current.
•
Use the diagnostics software Dynamic Tests to
isolate a faulty cylinder. See Dynamic Tests on
p. 83.
•
Use an inductive timing light to check ignition
and fuel injector circuits. Refer to Running Igni-
tion Tests on p. 88 and Running Fuel System
Tests on p. 91.
•
Use the diagnostics software Fuel Control
Adjustment test to help identify a cylinder that
may be too rich or too lean. Refer to Fuel Con-
trol Adjustment on p. 83.
•
Use an inductive amp meter to monitor injector
circuit current. Compare readings of all circuits
to identify possible failure.
•
Check fuel quality and that fuel is present at
injectors.
82
Diagnostics software
•
Use the diagnostics software Logging function
to record engine data as a problem is occurring.
Logging Screen
•
AFTER all the above inspections, if the cause of
a running quality problem still cannot be identi-
fied, perform a compression test to check for
internal powerhead damage.
IMPORTANT:
Remove a cylinder head or disas-
semble the engine only as a last resort.
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