calbsc400 Posted February 1, 2007 Share Posted February 1, 2007 My check engine light is on, probably bad gas, I think I put in low octane by accident last time so I topped off with good gas today. Checked the gas cap and will pull the EFI fuse if it doesn't clear itself in a day or so. I have the code reader for the 95 SC400 but don't have a clue. I did a search but couldn't find any info on where you hook it up. Where do you hook it up? Quote Link to comment Share on other sites More sharing options...
calbsc400 Posted February 2, 2007 Author Share Posted February 2, 2007 I think I found it, it's on the top of the motor near where the upper radiator hose is connected. It's marked "DIAGNOSTICS" Lousy picture but that's it to the left of the oil fill cap. Quote Link to comment Share on other sites More sharing options...
calbsc400 Posted February 2, 2007 Author Share Posted February 2, 2007 Actually, that's NOT where you do diagnostics. That is for engine adjustments. I did find the correct port, it's near the engine hood release handle. By the way, if you don't want to pull the fuse, you can disconnect the negative battery terminal to clear the code(s) but it also remove the radio station memory, trip odemeter setting etc. etc. Quote Link to comment Share on other sites More sharing options...
calbsc400 Posted February 3, 2007 Author Share Posted February 3, 2007 Engine light reset itself after about 100 miles with 92 octane. I reread the owners manual and you can use that under the hood port also, not just the one in the cabin. Quote Link to comment Share on other sites More sharing options...
whitesnake SC400 Posted March 14, 2009 Share Posted March 14, 2009 May anyone please add a picture where diagnostics socket is located under the steering wheel on SC400 ? Or at least more detailed explanation where to find this socket. I do not have error code reader but i've read how to manually pull the codes via "engine check" indicator blinking pattern. Thanks Quote Link to comment Share on other sites More sharing options...
Sc400=Delirium Trigger Posted August 8, 2009 Share Posted August 8, 2009 May anyone please add a picture where diagnostics socket is located under the steering wheel on SC400 ? Or at least more detailed explanation where to find this socket.I do not have error code reader but i've read how to manually pull the codes via "engine check" indicator blinking pattern. Thanks Mind sending me a link to this manual? I haven't been able to find it. Quote Link to comment Share on other sites More sharing options...
Sc400=Delirium Trigger Posted August 10, 2009 Share Posted August 10, 2009 May anyone please add a picture where diagnostics socket is located under the steering wheel on SC400 ? Or at least more detailed explanation where to find this socket.I do not have error code reader but i've read how to manually pull the codes via "engine check" indicator blinking pattern. Thanks Mind sending me a link to this manual? I haven't been able to find it. Update: I finally found the website, it is for the Ls400 but pretty much the same motor. http://www.justanswer.com/uploads/skyvisio..._90_ls400_1.pdf Hope this helps others! Quote Link to comment Share on other sites More sharing options...
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