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dh20

2010, 206 SSI with a 4.3 Merc, Alpha 1

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Can someone confirm if a heat gauge is part of the instrument panel on a 206 SSi... also do all Mercruisers have guardian mode as standard feature.. (not just the alarms) but the reduced power feature should something go wrong.

Thanks

 

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2 hours ago, dh20 said:

Can someone confirm if a heat gauge is part of the instrument panel on a 206 SSi... also do all Mercruisers have guardian mode as standard feature.. (not just the alarms) but the reduced power feature should something go wrong.

Thanks

 

The smart craft criteria is all inclusive per that attached worksheet. Alarm sequence, constant/critical, intermittent/informational and power limiting as indicated from 10 to 90%.

Engine Guardian System

General Description

Engine Guardian is the focal point of the self-diagnostic strategy on these engines. It helps

protect the engine from possible damage that could result from several faulty conditions.

The system monitors the sensors incorporated on the engine and if a malfunction is

discovered, a fault description is stored in thePCMand available power is normally reduced.

By ensuring that engine output is at a low enough level, the engine is better protected from

thermally induced failures.

For example, if an open or short is found in any sensor, available power will be reduced to

90% of total, the AudioWarning System Alarmwill sound 2 beeps perminute (2 Bp/min) and

the Smartcraft gauges will display a warning lamp. In a seawater pump pressure low

condition, the maximum rpm will vary with the pressure and temperature of the engine and

could be limited to idle in extreme cases of overheating, a constant beep will sound and

Smartcraft gauges will display a warning lamp.

IMPORTANT: Engine Guardian cannot guarantee that engine damage will not occur

when adverse operating conditions are encountered. Engine Guardian is designed

to warn the operator of an adverse condition and to reduce power by limiting rpm in

an attempt to reduce possible engine damage. The boat operator is ultimately

responsible for proper engine operation.

SERVICE MANUAL NUMBER 36 GENERAL INFORMATION

90-864573 FEBRUARY 2002 Page 1A-25

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.

 

 

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