1999 "EE" 90, 115 FFI, 150, 175 V4, V6 FFI Outboards Service Manual, P/N 787024, Page 89Get this manual
IT] Step 6: Running TestMonitor voltages using FFIDiagnostic
W Software while checking each plug lead using timing lightLook for consistent flash and only one flash per revolution and steady voltages
IBARO PRESSURE
29 ,3211n HG 13.1
VOLTAGES NO ALT,12V NO ALT,26V
All OKsuspect worn spark plugs, fuel system problems, or internal problems Voltages are low or decrease with RPMtest charging system Voltages are steady but engine misfirescheck crankshaft position sensor air gap and resistance (see Step 3), then perform Step while problem is occurring Voltages fluctuate and engine misfiressuspect loose battery connection or damaged capacitor
Step 7: Capacitor Verification
ATurn key switch ON
[[] BMonitor voltage at Position fuse while turning key switch
OFF Voltage quickly bleeds to near voltscapacitor is OK Voltage drops to immediatelyreplace capacitor Voltage does not dropverify stop circuitSee Step 8