looked in my manual,#36 Service Manual
#36 ECM 555 Diagnostics S/N OM300000 and Above
Serial Number
0M300000 and Above
com
Rechain)
Belgium
ECM 555 Diagnostics
can't find anything for a no. 7, there all codes. are you using the correct software version.also I would have 2 check but I thought when the guardian system took over it put you into limp mode, enough RPM"S to get you to shore? not 90%, and its a steady beeping. intermittent is somthing dumb like check the fluid level in your drive monitor.
oops, just checked, hope this helps.
Warning Chart
The engine warning system incorporates an audio alarm and, if installed, Smartcraft
Gauges System. When the key switch is turned to the ON position, the audio alarm will
momentarily activate to test thewarning system. The alarm should sound once if the system
is operable. This table is a guick guide, showingwhat warning output will accompany a fault.
Fault Smartcraft
Gauges
Audio
Alarm
Available
Power
Description
ECT CKT HI Yes 2 Bp/min 90% Open
ECT CKT LO Yes 2 Bp/min 90% Short
ECT Coolant
Overheat
Yes Constant 6 - 100 % Engine guardian
overheat condition
EST 1 Open 1 Yes 2 Bp/min 100% Coil harness wire open
EST 1 Short 1 Yes 2 Bp/min 100% Coil harness wire short
Fuel Injector 1-7-4-6
Open
Yes 2 Bp/min 100% Fuel injector wire open
Fuel Injector 3-5-2-8
Open
Yes 2 Bp/min 100% Fuel injector wire open
Guardian Strategy Yes Constant 0% - 100% Protection Strategy
IAC Output LO/HI 2 Yes 2 Bp/min 90% Open
Knock Sensor 1 Lo Yes 2 Bp/min 90% Open
Knock Sensor 1 Hi Yes 2 Bp/min 90% Short
Low Drive Lube
Strategy
Yes Constant 100% Low oil in sterndrive
Low Oil Pressure
Strategy
Yes Constant 0 - 100% Low oil pressure strategy
NOTE: If any 5v sensor becomes shorted to ground the engine will not start. If the engine
is operating when the short occurs the engine may stop operating and will not start.
NOTE: 1 GM EFI ignition system failure open or shorted, driver will flag EST 1 fault.
NOTE: 2 TPS must see 5% throttle then back to 0% to flag IAC fault.
NOTE: 3 2-wire sensor open will read sensor Hi on scan tool.
NOTE: 4VDC PWR Low - if shorted or no voltage engine will not start; if VDC PWR voltage
falls velow 22 volts will set sensor faults.
NOTE: 5 Shift Switch - will activate code when engine rpm are above 3500 rpm and 40%
load.
GENERAL INFORMATION SERVICE MANUAL NUMBER 36
Page
Warning Chart (continued)
Fault Smartcraft
Gauges
Audio
Alarm
Available
Power
Description
Main Power Relay
Output
Yes No N/A Engine will not start
Main Power Relay
Backfeed
Yes No N/A Engine will not start
MAP Sensor 1 Input
High
Yes 2 Bp/min 90% High voltage or short
MAP Sensor 1 Input
Low
Yes 2 Bp/min 90% Open, no visual on
SC1000
Oil PSI CKT Hi Yes 2 Bp/min 90% Open, defaults to 50.7 psi
Oil PSI CKT Lo Yes 2 Bp/min 90% Short, defaults to 50.7 psi
Overspeed Yes Constant rpm limit Engine over rpm limit
Pitot CKT Hi No No 100% Short or high voltage
Pitot CKT Lo No No 100% Open
Sea Pump PSI Lo Yes Constant 6-100%
Guardian Strategy
Sea Pump CKT Hi Yes 2 Bp/min 90% Open - 0 psi reading
Sea Pump CKT Lo Yes 2 Bp/min 90% Voltage high or short
Sea Water Temp No No N/A Defaults to --31 degreesC
Fuel Level #1 No No N/A Only if turned on
STB EMCT CKT Hi N/A N/A N/A N/A
STB EMCT CKT Lo N/A N/A N/A N/A
STB EMCT CKT
Overheat
N/A N/A N/A N/A
NOTE: If any 5v sensor becomes shorted to ground the engine will not start. If the engine
is operating when the short occurs the engine may stop operating and will not start.
NOTE: 1 GM EFI ignition system failure open or shorted, driver will flag EST 1 fault.
NOTE: 2 TPS must see 5% throttle then back to 0% to flag IAC fault.
NOTE: 3 2-wire sensor open will read sensor Hi on scan tool.
NOTE: 4VDC PWR Low - if shorted or no voltage engine will not start; if VDC PWR voltage
falls velow 22 volts will set sensor faults.
NOTE: 5 Shift Switch - will activate code when engine rpm are above 3500 rpm and 40%