Nathanj1142 Posted April 21, 2021 Report Share Posted April 21, 2021 Hey guys. just wired in a GTE crank sensor (24 tooth) with the wheel etc and got the 7m-gte cam sensor. Getting this when I’m cranking the engine! Any ideas? Quote Link to comment Share on other sites More sharing options...
Adamw Posted April 21, 2021 Report Share Posted April 21, 2021 That is just 0.15V of static noise, it is not a trigger signal. Was the engine cranking when you clicked the capture button? Quote Link to comment Share on other sites More sharing options...
Nathanj1142 Posted April 21, 2021 Author Report Share Posted April 21, 2021 3 minutes ago, Adamw said: That is just 0.15V of static noise, it is not a trigger signal. Was the engine cranking when you clicked the capture button? Yes the engine was cranking!! Possible have my settings wrong on pc link? I’m just using the base map Quote Link to comment Share on other sites More sharing options...
Adamw Posted April 21, 2021 Report Share Posted April 21, 2021 But did you click the capture button while the engine was cranking? Not click capture, then crank. Quote Link to comment Share on other sites More sharing options...
Nathanj1142 Posted April 21, 2021 Author Report Share Posted April 21, 2021 17 minutes ago, Adamw said: But did you click the capture button while the engine was cranking? Not click capture, then crank. I may have pressed as I was starting to crank, causing that issue. I’ll give that a go tomorrow. Any other suggestions to try if that doesn’t sort it? What about the filtering settings? Cheers Quote Link to comment Share on other sites More sharing options...
Adamw Posted April 21, 2021 Report Share Posted April 21, 2021 The settings wont prevent a signal showing on the scope. If you still get a scope capture like above and it was definately cranking while the capture button was clicked that that would suggest there is no connection between the sensors and the ecu. Quote Link to comment Share on other sites More sharing options...
Nathanj1142 Posted April 21, 2021 Author Report Share Posted April 21, 2021 29 minutes ago, Adamw said: The settings wont prevent a signal showing on the scope. If you still get a scope capture like above and it was definately cranking while the capture button was clicked that that would suggest there is no connection between the sensors and the ecu. Which would indicate the wrong pins in the ecu or a break in the wire / broken sensor? Quote Link to comment Share on other sites More sharing options...
Adamw Posted April 22, 2021 Report Share Posted April 22, 2021 yes. Quote Link to comment Share on other sites More sharing options...
Nathanj1142 Posted April 22, 2021 Author Report Share Posted April 22, 2021 I did as you said, had the same issue. I then switched battery as I thought it may not have been outputting sufficient voltage and was dying. now getting this. Any ideas? cheers Quote Link to comment Share on other sites More sharing options...
Adamw Posted April 22, 2021 Report Share Posted April 22, 2021 Still the same, no signal. The sensor signal isnt reaching the ecu. A wiring issue. Quote Link to comment Share on other sites More sharing options...
Nathanj1142 Posted April 22, 2021 Author Report Share Posted April 22, 2021 16 minutes ago, Adamw said: Still the same, no signal. The sensor signal isnt reaching the ecu. A wiring issue. Thanks mate. I’ve wired the crank to b27 and b7 on the ecu wiring. So confused. I’ll check continuity Quote Link to comment Share on other sites More sharing options...
Nathanj1142 Posted April 23, 2021 Author Report Share Posted April 23, 2021 I found this thread and had a read through, then looked in my settings on the base map and the fuel pressure solenoid is active for ecu hold power, could this be causing an issue? Quote Link to comment Share on other sites More sharing options...
Adamw Posted April 23, 2021 Report Share Posted April 23, 2021 Give us a log of it cranking and attach your map as well. ECU hold power will kill fuel and spark, but it wont stop the triggerscope from showing the signal. Quote Link to comment Share on other sites More sharing options...
Nathanj1142 Posted April 24, 2021 Author Report Share Posted April 24, 2021 cheers mate i appreciate it. the files are attached supralinkg4x - basemap.pclx TriggerScopeLog-supra.llgx Quote Link to comment Share on other sites More sharing options...
Adamw Posted April 24, 2021 Report Share Posted April 24, 2021 Can you do a pc log of it cranking. Quote Link to comment Share on other sites More sharing options...
Nathanj1142 Posted April 24, 2021 Author Report Share Posted April 24, 2021 3 minutes ago, Adamw said: Can you do a pc log of it cranking. I believe the log I sent was it cranking? Is this the wrong format Quote Link to comment Share on other sites More sharing options...
Adamw Posted April 24, 2021 Report Share Posted April 24, 2021 Thats a triggerscope. I want a PC log. >logging>record>. crank engine. >logging>stop. >logging>save log file as. Quote Link to comment Share on other sites More sharing options...
Nathanj1142 Posted April 25, 2021 Author Report Share Posted April 25, 2021 here you go PC Datalog - 2021-04-25 7;47;33 pm.llgx Quote Link to comment Share on other sites More sharing options...
0x33 Posted April 25, 2021 Report Share Posted April 25, 2021 ECU is not showing any RPM, as it cannot recognise trigger 1 or trigger 2 signal. So you still have a wiring issue somewhere. I presume this is an NA-T that you have fitted a GTE oil pump to, with the crank sensor and GTE crank timing gear? Quote Link to comment Share on other sites More sharing options...
Nathanj1142 Posted April 25, 2021 Author Report Share Posted April 25, 2021 1 minute ago, 0x33 said: ECU is not showing any RPM, as it cannot recognise trigger 1 or trigger 2 signal. So you still have a wiring issue somewhere. I presume this is an NA-T that you have fitted a GTE oil pump to, with the crank sensor and GTE crank timing gear? Yes this is correct. I have also repinned the std distributor wiring to fit a 7m-gte cps too, I am now looking through wiring. It’s plausible I have the wrong pins in the wrong slots on the ecu. Going through it all now Quote Link to comment Share on other sites More sharing options...
Nathanj1142 Posted April 25, 2021 Author Report Share Posted April 25, 2021 Success! Ish lol. I have one sensor reading now. I had all the wiring from the cam signal wrong. I have NE (common ground on 7m cps) plugged to b6 (g1-) the GTE has 2 cam position sensors, which g1- and g2- go to pins b5 and b6. Do I need to split NE to b5- and b6- or does the link only need g1 signal? Quote Link to comment Share on other sites More sharing options...
Adamw Posted April 26, 2021 Report Share Posted April 26, 2021 Even now the cam signal still doesnt look right to me. Although it may just be that it was cranking very slow? It still looks like the ground is missing or something. 2 hours ago, Nathanj1142 said: I have NE (common ground on 7m cps) plugged to b6 (g1-) the GTE has 2 cam position sensors, which g1- and g2- go to pins b5 and b6. Do I need to split NE to b5- and b6- or does the link only need g1 signal? All grounds are internally tied together and the Link ECU only needs one cam sensor. So cam sensor ground can go to either B5, B6 or B7. And NE is not the common ground in a Toyota CAS. NE is the "crank" (24T) signal, so this shouldnt even be connected. The common ground is usually labelled something like G- in toyota terminolgy. Quote Link to comment Share on other sites More sharing options...
Nathanj1142 Posted April 26, 2021 Author Report Share Posted April 26, 2021 8 minutes ago, Adamw said: Even now the cam signal still doesnt look right to me. Although it may just be that it was cranking very slow? It still looks like the ground is missing or something. All grounds are internally tied together and the Link ECU only needs one cam sensor. So cam sensor ground can go to either B5, B6 or B7. And NE is not the common ground in a Toyota CAS. NE is the "crank" (24T) signal, so this shouldnt even be connected. The common ground is usually labelled something like G- in toyota terminolgy. Apologies I must’ve got confused, yes I have g- going to b6. The battery is at 11.7v so I’m assuming it’s cranking a bit slower. I’ll wait to get both signals reading before ironing out the quality of signal. I’ll have to try and switch around some pins for the crank signal now, i checked the resistance at the ecu end of the shielded cable I ran and the variation wasn’t as strong as just the sensor alone. Maybe it’s a grounding issue in my wiring thanks for your support so far I’ll update you tomorrow Quote Link to comment Share on other sites More sharing options...
Nathanj1142 Posted April 26, 2021 Author Report Share Posted April 26, 2021 So it turns out the shielded wire is crap! I ran some more cable( not shielded) to the pins and now works as intended (so I think). tried starting tonight but was just getting flames out the exhaust and a few tries. Took a video of spark plug 1 arcing and trying to see where it was in relation to the tdc mark. Seems to be about 20 degrees after tdc so, that needs sorting. The timing light was playing up hence why we tried filming. can I set a ballpark ignition timing figure while cranking or does the car need to be running? I’m concerned it’s using the wrong cam signal and firing 180 degrees out. What are the settings I need to be using for the trigger setup for ignition timing? It’s set at -6 degrees for base timing and 0 for advance I think? cheers Quote Link to comment Share on other sites More sharing options...
Adamw Posted April 27, 2021 Report Share Posted April 27, 2021 The offset really needs a timing light to set correctly. If you think it is somewher close but firing on the wrong stroke then just add or subtract 360 from the existing offset. It looks like the cam sensor might be wried back to front in that latest scope, did you change it from the earlier one? Quote Link to comment Share on other sites More sharing options...
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