danimin31 Posted August 15, 2023 Report Share Posted August 15, 2023 Hi. I recently bought a Link G4 GTS/GTR plugin ecu for my R32 GTST Skyline. The engine is full stock apart of a T3 turbo, front GTR intecooler and FFP. The engine wiring loom is new from wiring specialities and the engine runs with the stock ecu. With Link ecu I follow all the instructions from the manual and when the engine cranks, the computer disconnects from the ecu, and the engine dont start, i think that its missing spark because i tried to start with ether and nothing happen. I’m using the base map that comes with the ecu and i config triggers and other parameters. Also i read some posts with similar problems, and i try to put pin 16 to ground and it stays connected because i can see the triggers and engine speed for a moment but when i try to start the ecu restart because the fuel pump sounds again and the rpm on tacho do the check as when i put on contact position. Other thing i tried is to put battery 12v to pin 45 as i saw on other posts, and doing this, the fuel pump doesnt sound and the rpm dont move. I try other maps downloades from this forum but nothing changes. Any ideas or suggestions? Quote Link to comment Share on other sites More sharing options...
Adamw Posted August 16, 2023 Report Share Posted August 16, 2023 So is it an old G4 ECU? If you pull the cover off the ecu case does the LED stay on when cranking? Quote Link to comment Share on other sites More sharing options...
danimin31 Posted August 16, 2023 Author Report Share Posted August 16, 2023 Yes. Is the old G4 from 2014. I have checked it today and the answer is no. When i crank it, the LED turn off and 2 seconds later it turns on again as you can see on the second video Quote Link to comment Share on other sites More sharing options...
Adamw Posted August 16, 2023 Report Share Posted August 16, 2023 The LED going out suggests you still have a power supply issue somewhere. I would temporarily ground pin 16 with a jumper wire and then check if the LED stays on while cranking then. This will tell us whether the problem is on the ignition switch circuit or the ECCS circuit. Even though it is only dropping out for a very short time when battery voltage is lowest, we really need to get that solved first so the PC stays connected so we can do a log and see live data. By the looks of your tacho during cranking I would say there is possibly a trigger setup issue but lets figure out the dropout first. Quote Link to comment Share on other sites More sharing options...
danimin31 Posted August 17, 2023 Author Report Share Posted August 17, 2023 I have checked, the LED doesnt turn off when cranking, but the fuel pump doesnt sound and the rpm doesnt move with Pin16 at ground Quote Link to comment Share on other sites More sharing options...
danimin31 Posted August 17, 2023 Author Report Share Posted August 17, 2023 And here is the log with pin16 grounded: rb20 fail.llg Quote Link to comment Share on other sites More sharing options...
danimin31 Posted August 22, 2023 Author Report Share Posted August 22, 2023 Any ideas? Quote Link to comment Share on other sites More sharing options...
Adamw Posted August 23, 2023 Report Share Posted August 23, 2023 Sorry for the slow reply, I missed your post. Can you attach a copy of your map as well. Quote Link to comment Share on other sites More sharing options...
danimin31 Posted August 23, 2023 Author Report Share Posted August 23, 2023 Is the stock gts-gtr from link g4 Quote Link to comment Share on other sites More sharing options...
Adamw Posted August 24, 2023 Report Share Posted August 24, 2023 I want the map out of your ECU. Quote Link to comment Share on other sites More sharing options...
danimin31 Posted August 24, 2023 Author Report Share Posted August 24, 2023 This is the last i have testNissan RB20DET.pcl Quote Link to comment Share on other sites More sharing options...
Adamw Posted August 25, 2023 Report Share Posted August 25, 2023 There is something not happy with your ECU. There are errors and odd values showing everywhere. There is potentially a hardware issue but lets rule out software first. I see it has quite old firmware so start by updating that. One that is done, go to >ecu controls>restore to factory settings and preform that. Then do a power cycle and re load your map in. Then take a look at the runtimes screen to confirm if some of these weird errors are gone. For example on the ecu status tab of the runtimes screen below, there shouldn't be the hardware block 1 or 5v Analog supply error, The ECU temp should read about room temp, the Trig 1 Arming should show about 1.5V and the analog supply should show about 5V. Quote Link to comment Share on other sites More sharing options...
danimin31 Posted August 26, 2023 Author Report Share Posted August 26, 2023 Sorry. That is the wrong map. This is the correct one: Also my Ecu Status is not as yours: Quote Link to comment Share on other sites More sharing options...
danimin31 Posted August 28, 2023 Author Report Share Posted August 28, 2023 I restore it to factory settings and did an update and nothing changes Quote Link to comment Share on other sites More sharing options...
danimin31 Posted August 30, 2023 Author Report Share Posted August 30, 2023 Up! Quote Link to comment Share on other sites More sharing options...
Adamw Posted August 30, 2023 Report Share Posted August 30, 2023 You need to turn off eccs sync if you have already completed the sync test, and your MAP sensor is reading wrong. Your BAP is reading 97kpa while the MAP is showing 50Kpa, these should both show the same value when the engine isn't running. Quote Link to comment Share on other sites More sharing options...
danimin31 Posted September 10, 2023 Author Report Share Posted September 10, 2023 Now i have an external 3bar MAP calibrated and turn off eccs. I don’t why only appears 4 ignition signals. Nothing changes when cranking Quote Link to comment Share on other sites More sharing options...
Adamw Posted September 11, 2023 Report Share Posted September 11, 2023 On 9/11/2023 at 12:27 AM, danimin31 said: I don’t why only appears 4 ignition signals. The g4 storm based plug-in ecu's only had 4 ignition drives. So what problem do you currently have? Quote Link to comment Share on other sites More sharing options...
danimin31 Posted September 11, 2023 Author Report Share Posted September 11, 2023 The engine still does not start. Still having not spark. Quote Link to comment Share on other sites More sharing options...
danimin31 Posted September 13, 2023 Author Report Share Posted September 13, 2023 Today i had tested another G4 with same map and doesnt start. Quote Link to comment Share on other sites More sharing options...
Adamw Posted September 14, 2023 Report Share Posted September 14, 2023 Please attach a new log and your current tune. Quote Link to comment Share on other sites More sharing options...
danimin31 Posted September 15, 2023 Author Report Share Posted September 15, 2023 Hi Adamw here they are:rb20det.pclrb20 fail with map.llg Quote Link to comment Share on other sites More sharing options...
Adamw Posted September 15, 2023 Report Share Posted September 15, 2023 The log shows RPM and dwell so the ecu is commanding a spark. Are you sure there is no spark? How are you checking? Do you get a spark if you use the ign test mode? Do you have 12V at the coil when cranking? Quote Link to comment Share on other sites More sharing options...
danimin31 Posted September 16, 2023 Author Report Share Posted September 16, 2023 Yes. Now i have spark, yesterday sound like a start try when logging. I continued trying to start but it doesnt start. Quote Link to comment Share on other sites More sharing options...
Adamw Posted September 17, 2023 Report Share Posted September 17, 2023 Probably needs more fuel then. Try double or triple the current master fuel. Quote Link to comment Share on other sites More sharing options...
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