Troubleshooting - Evinrude E-Tec 40 HP Service Manual

Troubleshooting

Outboard will not crank, starter does not
operate:
Check co ndition of batt ery and cables (ma in
•
battery switch and cables). Make sure battery
cables are not reversed.
Confirm that switched B+ is present at "A" termi-
•
nal (yellow/red wire) of starter solenoid with key
switch in the START position.
Check g round at "B" te rminal h arness conne c-
•
tion.
Refer to ELECTRIC START TESTS on p. 102.
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Repair starter or start circuit as needed.
Outboard cranks, will not start:
Check emergency stop switch and lanyard
•
Check powerhead mounted neutral switch
•
Check the EMM LED Indicators for system sta-
•
tus information. Refer to
TORS on p. 77.
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 Ign ition test using Evinrude
•
Diagnostics so ftware and a n ind uctive t iming
light. Refer to Static Ignition Test on p. 81.
If ignition test indicates steady sp ark, refer to
•
FUEL DELIVERY TESTS on p. 84.
Outboard runs, low on power, misfires:
Check the EMM LED Indicators for system sta-
•
tus information. Refer to
TORS on p. 77.
Use the Evinrude Diagnostics software Monitor
•
screen to check syste m (55 V) and TPS vo lt-
ages. System volt age should b e steady , a nd
TPS voltage should be between 0.2 and 4.85 V.
Use a digital multimeter to check
IMPORTANT:
voltage on external circui ts only when necessary.
All EMM output currents are DC current.
EMM LED INDICA-
Diagnostics sof tware
EMM LED INDICA-
DIAGNOSTIC PROCEDURES
Use the diagnostics software Dynamic Tests to
•
isolate a faulty cylinder. See DYNAMIC TESTS
on p. 76.
Use an inductive timing light to check ig nition
•
and fuel injector circuits. Refer to Running Igni-
tion Tests on p. 82 and Running Fuel System
Tests on p. 85.
Use the diagn ostics software Fuel Control
•
Adjustment test to help identify a cylind er that
may be too rich or too lea n. Refer to Fuel Con-
trol Adjustment on p. 76.
Use an inductive amp meter to monitor injector
•
circuit current. Compare readings o f a ll circuits
to identify possible failure.
Check fuel quality and that fuel is
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injectors.
Use the diagnostics sof tware Logging fun ction
•
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.
Remove a cylinder head or disas-
IMPORTANT:
semble the engine only as a last resort.
SYSTEM ANALYSIS
present at
008574
75
5