SmartCraft SC 1000
05-25-2007, 12:15 AM
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SmartCraft SC 1000
I have an 03 Fountain with a stock 496HO. I have cleared all fault history from the ecu including both active faults and freeze frame seconds etc... The sc 1000 gauge constantly gives me the flashing bell & check engine icon as to alert of an engine malfunction defined in the manual. The following codes were present:
1. 191 - fuel level 2 circ high
2. 118 - steering position circ high
3. 75 - fuel level 1 circ high
4. 94 - pitot pressure circ low
5. 131 - trim sensor circ low
All of these codes are "soft" codes and are considered normal on my boat because those options are not installed and the computer is looking for them by default. This will not change.
However, #5 trim limit sender like the previous four listed will not generate a beep at the helm but it WILL trigger the alarm in any of the SmartCraft guages. My question is:?????
How do you install a "dummy" sort of relay or trick the ecu into thinking that the trim limit is hooked up and working? I thought about rotating the limit unit 180 degrees and trying to adjust it so that outgoing signal would "fool" the ecu. Anybody had to fix this yet? Shoulda been a wrench!!
1. 191 - fuel level 2 circ high
2. 118 - steering position circ high
3. 75 - fuel level 1 circ high
4. 94 - pitot pressure circ low
5. 131 - trim sensor circ low
All of these codes are "soft" codes and are considered normal on my boat because those options are not installed and the computer is looking for them by default. This will not change.
However, #5 trim limit sender like the previous four listed will not generate a beep at the helm but it WILL trigger the alarm in any of the SmartCraft guages. My question is:?????
How do you install a "dummy" sort of relay or trick the ecu into thinking that the trim limit is hooked up and working? I thought about rotating the limit unit 180 degrees and trying to adjust it so that outgoing signal would "fool" the ecu. Anybody had to fix this yet? Shoulda been a wrench!!
05-29-2007, 11:13 PM
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On some boats including mine, the x-dimension in relation to the optimum trim settings won't allow for the easy fix. Outside of the fact that the sending units are replaced with mech indicators, if you hook up the limit sending unit, you would not be able to trim the boat because the sending unit would max out before the drive is trimmed up on plane etc... Also, there would no longer be a way to trim the drive further up for towing...
I thought about it more after I posted my question and figured that I could just buy another sending unit, mount it inside the bilge out of the way, and set it permantly to max low and this should take care of the issue.
Thanks a lot for the response.
04-20-2010, 12:53 AM
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I bought the digital sending unit and zip tied it up hidden out of the way. If you rotate the dial until the ecm "sees" the value it's looking for, the warning icons will go away.
Another way would be to measure the resistance of a sending unit and just put a resistor in line to the harness. It just takes more time than putting a bogus unit somewhere in the bilge..
Another way would be to measure the resistance of a sending unit and just put a resistor in line to the harness. It just takes more time than putting a bogus unit somewhere in the bilge..
