Evinrude & Johnson E75DPLSCB, Руководство по обслуживанию

Страница: 107 / 349

105
SYSTEM ANALYSIS
DIAGNOSTIC PROCEDURES
6
Troubleshooting
Outboard will not crank, starter does not
operate:
•
Check condition of battery and cables (main
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 ground at “B” terminal harness connec-
tion.
•
Refer to
ELECTRIC START TESTS
on p. 131.
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
EMM LED INDICA-
TORS
on p. 107.
•
Use the Evinrude Diagnostics software Stored
Faults screen to check for current service
codes. If there are multiple stored 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. 111.
•
If ignition test indicates steady spark, refer to
FUEL DELIVERY TESTS
on p. 114.
Outboard runs, low on power, misfires:
•
Check the EMM LED Indicators for system sta-
tus information. Refer to
EMM LED INDICA-
TORS
on p. 107.
•
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.
•
Use the diagnostics software Dynamic Tests to
isolate a faulty cylinder. See
DYNAMIC TESTS
on p. 106.
•
Use an inductive timing light to check ignition
and fuel injector circuits. Refer to
Running Igni-
tion Tests
on p. 112 and
Running Fuel Sys-
tem Tests
on p. 115.
•
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. 106.
•
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.
•
Use the diagnostics software Logging function
to record engine data as a problem is occurring.
IMPORTANT:
Use a digital multimeter to check
voltage on external circuits only when necessary.
All
EMM output currents are DC current.
Logging Screen
006549