HeyBoatman Posted June 16, 2018 Share Posted June 16, 2018 I've got a 2012 260 Monterey with a 350 magnum. After an overheat condition caused a solid steady alarm and slowed engine The overheat condition was repaired.However I have a curious alarm where the alarm beeps once every 60 seconds. Any clues? thanks Murray Quote Link to post Share on other sites
WaterDR Posted June 16, 2018 Share Posted June 16, 2018 You need to read the code. Quote Link to post Share on other sites
Phillbo Posted June 16, 2018 Share Posted June 16, 2018 What was the overheating issue? Check all the fluids including the outdrive. Quote Link to post Share on other sites
Wingnut Posted June 17, 2018 Share Posted June 17, 2018 11 hours ago, HeyBoatman said: I've got a 2012 260 Monterey with a 350 magnum. After an overheat condition caused a solid steady alarm and slowed engine The overheat condition was repaired.However I have a curious alarm where the alarm beeps once every 60 seconds. Any clues? thanks Murray Look at the attached table and concentrate on items marked 2 beeps per minute. W 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 % 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 1A-26 90-864573 FEBRUARY 2002 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 100% Short or high voltage Pitot CKT Lo No 100% Open Sea Pump PSI Lo Yes Constant 6-100% GuardStrat 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 N/A Defaults to --31 degreesC Fuel Level #1 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% load. SERVICE MANUAL NUMBER 36 GENERAL INFORMATION 90-864573 FEBRUARY 2002 Page 1A-27 Warning Chart (continued) Fault Smartcraft Gauges Audio Alarm Available Power Description Steer CKT Hi No 100% Short or high voltage Steer CKT Lo No 100% Open TPS1 CKT or Range Hi Yes 2 Bp/min 90% Short or high voltage TPS1 CKT or Range Lo Yes 2 Bp/min 90% Open or low voltage Trim CKT or Range Hi Yes No 100% Open or high voltage Trim CKT or Range Lo Yes No 100% Short 5 VDC PWR Low 4 Yes 2 Bp/min 90% Short or low - engine may not start MAT Sensor Hi Yes 2 Bp/min 90% Open -default to --32 degrees F MAT Sensor Lo Yes 2 Bp/min 90% Short -default to --32 degrees F Shift Switch 5 Yes 2 Bp/min 90% Open Circuit 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. Quote Link to post Share on other sites
Benda23 Posted June 17, 2018 Share Posted June 17, 2018 I installed mercury vessel view mobile when i had a beep every minute to find out what it was. (totally recommend installing it) It took 10 minutes and its about $250. It told me i had a o2 sensor giving an alarm.(even tells you which one) I changed the 02 sensor but couldn't get the error to go away, found out from mercury that i had to have someone come clear it on a computer. Did that and went away, but the mobile view sure saved me wondering what was going on and give you all kinds of other data Quote Link to post Share on other sites
HeyBoatman Posted June 20, 2018 Author Share Posted June 20, 2018 Thanks for the info guys ! As I was pondering this I haven't found anywhere that states what causes a steady (timed at every 60 seconds) fairly short beep. The engine doesn't need to be running, just as long as the key switch is turned on. I comprehend 2 beeps , I do know what a constant beep is. Just wanted to hear someone say they had one beep a minute. I'm looking into the mobile view, Thanks. I'm also interested in buying a code reader. Any suggestions on that? Quote Link to post Share on other sites
Wingnut Posted June 20, 2018 Share Posted June 20, 2018 9 hours ago, HeyBoatman said: Thanks for the info guys ! As I was pondering this I haven't found anywhere that states what causes a steady (timed at every 60 seconds) fairly short beep. The engine doesn't need to be running, just as long as the key switch is turned on. I comprehend 2 beeps , I do know what a constant beep is. Just wanted to hear someone say they had one beep a minute. I'm looking into the mobile view, Thanks. I'm also interested in buying a code reader. Any suggestions on that? Could the depth alarm on the depth finder be sounding. One long beep per minute has me stumped too. W Quote Link to post Share on other sites
HeyBoatman Posted June 20, 2018 Author Share Posted June 20, 2018 Thanks , the depth alarm does make an awful racket when it's first powered up in conjunction with the engine starting. I thought that I stopped it by pressing the on/off button but who knows, it still be on. I'll disconnect power to the Depth Finder. Quote Link to post Share on other sites
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