Section 7 - Troubleshooting
Page 132
90-8M0053363
eng
NOVEMBER 2010
Check VesselView First
Your VesselView display is the primary information source for the various functions of your boat. Consult the VesselView display
if you suspect something is wrong. VesselView displays faults and other information that can be helpful in determining the current
status of various systems that could be causing your concern and the solution to the problem.
Diagnosing EFI Problems
Your authorized Mercury MerCruiser dealer has the proper service tools for diagnosing problems on Electronic Fuel Injection (EFI)
Systems. The Electronic Control Module (ECM) on these engines has the ability to detect some problems with the system when
they occur, and store a Trouble Code in the ECM's memory. This code can then be read later by a service technician using a
special diagnostic tool.
Diagnosing DTS Problems
Your authorized Mercury MerCruiser dealer has the proper service tools for diagnosing problems on Digital Throttle and Shift
(DTS) Systems. The Electronic Control Module (ECM)/Propulsion Control Module (PCM) on these engines has the ability to detect
some problems with the system when they occur, and store a Trouble Code in the ECM/PCM's memory. This code can then be
read later by a service technician using a special diagnostic tool.
Engine Guardian System
The Engine Guardian System monitors the critical sensors on the engine for any early indications of problems. The system will
respond to a problem by emitting a continuous beep and/or reducing engine power in order to provide engine protection.
If Guardian System has been activated, reduce throttle speed. The horn will turn off when throttle speed is within the allowable
limit. Consult an authorized Mercury MerCruiser dealer for assistance.
Troubleshooting Charts
Starter Motor Will Not Crank Engine, Or Cranks Slow
Possible Cause
Remedy
Battery switch turned off.
Turn the switch on.
Remote control not in neutral position.
Position the control lever in neutral.
Open circuit breaker or blown fuse.
Check and reset the circuit breaker or replace fuse.
Loose or dirty electrical connections or damaged
wiring.
Check all electrical connections and wires (especially battery cables).
Clean and tighten all faulty connections.
Bad battery or low battery voltage.
Test the battery and charge if necessary; replace if bad.
Lanyard stop switch activated.
Check the lanyard stop switch.
Engine Will Not Start or Is Hard to Start
Possible Cause
Remedy
Lanyard stop switch activated.
Check the lanyard stop switch.
Improper starting procedure.
Read the starting procedure.
Insufficient fuel supply.
Fill fuel tank or open valve.
Faulty ignition system component.
Service the ignition system.
Clogged fuel filter.
Replace fuel filter.
Stale or contaminated fuel.
Drain fuel tank. Fill with fresh fuel.
Fuel line or tank vent line kinked or clogged. Replace kinked lines or blow out lines with compressed air to remove obstruction.
Faulty wire connections.
Check wire connections.
EFI system fault.
Have EFI System checked by an authorized Mercury MerCruiser dealer.
