R32jess Posted October 15, 2022 Report Share Posted October 15, 2022 Have an s15 G4+ with an odd onboard Map sensor issue. I have used the 4 bar calibration and it’s reading 57kpa (0.66v) at atmospheric pressure, I believe the onboard map sensor has failed? I am also having trouble with the link can lambda, I have configured the can side of it, it’s showing as detected and no faults but I cannot get a value out of it, (also has a link can gauge on a can splitter that’s working fine) any help would be appreciated thanks. Quote Link to comment Share on other sites More sharing options...
Adamw Posted October 15, 2022 Report Share Posted October 15, 2022 Yes, it sounds like the MAP is failing provided you have confirmed the 5V is ok and confirmed the voltage output with a voltmeter or similar. Can you attach the tune so we can look at your lambda problem. R32jess 1 Quote Link to comment Share on other sites More sharing options...
R32jess Posted October 16, 2022 Author Report Share Posted October 16, 2022 Verified 5v, ground and signal output (0.63v) at the sensor today, will try order a new sensor. Heres the tune file, Ignore the map. Thanks for your help. S15 Map V1.pclrS15 Map V1.pclr Quote Link to comment Share on other sites More sharing options...
R32jess Posted October 30, 2022 Author Report Share Posted October 30, 2022 Having trouble finding a surface mount 4 bar map sensor anywhere, anyone have any leads? any findings in the tune file about the can wideband error? Thanks. Quote Link to comment Share on other sites More sharing options...
Adamw Posted October 30, 2022 Report Share Posted October 30, 2022 The 4 bar MAP sensor elements have been obsolete for a couple of years now so are pretty hard to find. 7Bar will work but you do lose some reasolution with a 7bar on a G4+. I suspect Link would have some in stock for G4+ repairs, you can try querying [email protected] to get an idea on cost to replace it. Your lambda set up looks ok and the status shows it is waiting for the engine to start. Does it not come alive when the engine is running? I will need to see a log if thats the case. R32jess 1 Quote Link to comment Share on other sites More sharing options...
R32jess Posted November 26, 2022 Author Report Share Posted November 26, 2022 Hi Adam, have replaced the map sensor with a 7bar, that is reading correctly now. Replaced the wideband sensor with an LSU 4.9 as last one was unknown, We are now getting heating error codes. (log attached) Thanks jess. s15 Lambda.llg Quote Link to comment Share on other sites More sharing options...
R32jess Posted December 3, 2022 Author Report Share Posted December 3, 2022 Any ideas? Still having the wideband issue forgot to mention the can lambda (and can gauge) is being powered off the factory 02 sensor power wire. Can gauge seems to be working fine though. thanks Jess. Quote Link to comment Share on other sites More sharing options...
Confused Posted December 3, 2022 Report Share Posted December 3, 2022 Stock narrowband O2 heater wiring is probably insufficient for the wideband power supply. You can try adding a 22uF capacitor, as per the Alternative Wiring in the manual, which may help, otherwise you'll want to improve that power supply with some thicker wires. Quote Link to comment Share on other sites More sharing options...
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