Section 7 - Troubleshooting
Page 102
90-899883182 NOVEMBER 2007
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.
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 fuse.
Check and reset the main power circuit breaker or
replace the fuse. Check the 5 amp fuse on the power
harness connected to the battery, and replace if
necessary.
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.
Summary of Contents for Vazer 100
Page 8: ...Page iv 90 899883182 NOVEMBER 2007 ...
Page 26: ...Section 1 Warranty Notes Page 18 90 899883182 NOVEMBER 2007 ...
Page 40: ...Section 2 Getting to Know Your Power Package Notes Page 32 90 899883182 NOVEMBER 2007 ...
Page 54: ...Section 3 On The Water Notes Page 46 90 899883182 NOVEMBER 2007 ...
Page 60: ...Section 4 Specifications Notes Page 52 90 899883182 NOVEMBER 2007 ...
Page 114: ...Section 7 Troubleshooting Notes Page 106 90 899883182 NOVEMBER 2007 ...