DIAGNOSTIC PROCEDURES
The key to effective troubleshooting is confirming the proper operation of each engine system. Causes of electrical failures may be difficult to isolate. Check the integrity of all connections, grounds, and wiring prior to replacing a suspect component. Refer to GROUND CIRCUITS on p. 106
Observe and run the outboard prior to performing any unnecessary procedures. Initial inspection should include the following:
Observe the outboard and check the actual symptoms. Refer to TROUBLE CHECK CHART at the end of this manual.
Inspect spark plugs for indication of wear, oil fowling, or damage. A rich or lean running condition or evidence of internal engine damage could be identified by the appearance of the spark plugs.
Make sure the outboard can be turned over easily. There should not be any mechanical binding.
Check the Evinrude Diagnostics Software program Profiles screen, History screen, and Persistent Faults screens for evidence of prior abnormal operation. Refer to Diagnostic Software Program on p. 94.
Profiles Screen
History Screen
Persistent Faults Screen
Symptoms
Outboard will not crank, starter does not operate (electric start models):
Check condition of battery and cables (main battery switch and cables). Make sure battery cables are not reversed.
Confirm that B+ is present at “A” terminal (yellow/red wire) of starter solenoid with key switch in the START position.
Proceed to START CIRCUIT on p. 112. Repair starter or start circuit as needed.
Outboard cranks, will not start:
Use LED indicators of EMM for initial diagnostic information.
Perform the Static Spark Test using the Evinrude Diagnostics Software program. Refer to IGNITION OUTPUT on p. 115.
Results:
Steady spark on all cylinders and proper output voltage on all ignition primary circuits:
Check operation of all fuel injectors. Refer to FUEL COMPONENT TESTS on p. 164.
Check fuel quality and that fuel is present at injectors.
Refer to FUEL COMPONENT TESTS on p. 164 for fuel system pressure tests.
No spark on one or more cylinders:
Note cylinder with no ignition output. Refer to IGNITION OUTPUT on p. 115.
Monitor cranking RPM using the diagnostic program (300 RPM minimum).
Check CPS operation (verify RPM reading.)
Perform ignition coil resistance test(s). Refer to Ignition Coil Tests on p. 128.
Use the Evinrude Diagnostics Software program to check ignition voltage and 55 V alternator/injector voltage.
Outboard runs:
Use Evinrude Diagnostics Software program to perform Dynamic Tests. See Dynamic Tests on p. 121.
Use the engine Monitor screen of the Evinrude Diagnostics Software program to observe circuit voltages. Refer to Engine Monitoring Information on p. 111.
Use the diagnostic software Logging function to record engine data as a runability problem is occurring.
Logging Screen
Use an inductive timing light to monitor the injector circuits and ignition primary circuits. Refer to Testing with Timing Light on p. 110.
Use an inductive amp meter to monitor injector circuit current. Compare readings of all circuits to identify possible failure.
