Steffen Laursen Posted March 4, 2019 Report Share Posted March 4, 2019 Hi New to Link and having a problem with connection to the ecu No problem to connect to the ECU but when cranking the engine is the ECU offline few seconds after the ignition key is turned to engine start Also problems with signal from triggers Connected according to diagram to trigger 1 with shielded cable There is signal with trigger scope but seems weak Quote Link to comment Share on other sites More sharing options...
ClintBHP Posted March 4, 2019 Report Share Posted March 4, 2019 Your ECU is losing power, make sure you the 14v has voltage at all key positions and that the 2 grounds are well connected. Quote Link to comment Share on other sites More sharing options...
Grant Baker Posted March 4, 2019 Report Share Posted March 4, 2019 Is this a plugin or wire-in? Quote Link to comment Share on other sites More sharing options...
Steffen Laursen Posted March 5, 2019 Author Report Share Posted March 5, 2019 Hi Its G4+ plug inn to Subaru STI ver 10 with a V7 STI engine with crank trigger, trigger at LH inlet cam wheel and 2 VR trigger at the rear of the cyl. head land right Connected as follows Crankshaft trigger to trigger 1 trigger at LH inlet cam wheel TO TRIGGER 2 LH VR sensor to DIG 1 RH VR sensor to DIG 2 Has anyone any information how to calibrate crank and camshaft trigger One would assume that as its a known setup with 36-2-2-2 trigger that calibration is not needed The help file states that the calibration procedure involves ignition stroboscope, a bit hard with direct ignition. Is there a complete drawing showing all pins as I need that in order to trace power and ground, or is the std. Subaru wiring diagrams for that. A lot of question so any help i highly appreciated Quote Link to comment Share on other sites More sharing options...
Adamw Posted March 5, 2019 Report Share Posted March 5, 2019 Which V10 ecu do you have - the '04 or '07 model? Quote Link to comment Share on other sites More sharing options...
Steffen Laursen Posted March 6, 2019 Author Report Share Posted March 6, 2019 Hi Its 07 model as my wiring loom etc is from a 07 model Quote Link to comment Share on other sites More sharing options...
Adamw Posted March 7, 2019 Report Share Posted March 7, 2019 Ok, did you try the 06/07 jumpers in both positions? As they effect which pins control the main relay. Also to confirm you have the correct ECU, did you check you have no wires on pin A1, A2, A3? The main power circuit works like this: A +12V signal from ignition switch comes in to pin B19. That switches a Mosfet on which then grounds either pin C23 (jumper position 07) or C24 (jumper position 06). These pins are the trigger to the main relay (ground turns the relay on). When the main relay turns on that should supply the main 12V to the ECU via pin A7 and the ECU can then power up. Quote Link to comment Share on other sites More sharing options...
Steffen Laursen Posted March 7, 2019 Author Report Share Posted March 7, 2019 Hi Adam Thanks for the reply and the explanation on the power circuit Yes I checked, and have no wires on pin A1, A2 ,A3, its is 2007 version The ECU powers up nicely when ignition is on, so im not sure if its the jumpers The problem is that the ECU goes offline when cranking the engine, I can reconnect when cranking and sometime comes the ECU online, but its random so something is wrong, and when it comes online is there a message that that the program on ECU and PC is different ? More failure search during weekend, have borrowed a scope so I can check the triggers Any comments on the trigger calibration procedure, do I need a "interface" to connect between coil on plug and the spark plug in order to connect timing lamp Quote Link to comment Share on other sites More sharing options...
Simon Posted March 8, 2019 Report Share Posted March 8, 2019 The best option for checking the timing is to use a short HT lead to put between the coil and the plug. There are also some more high end timing lights that will trigger on the ECU to coil signal but a shot HT lead is more than enough. Quote Link to comment Share on other sites More sharing options...
gtihk Posted March 8, 2019 Report Share Posted March 8, 2019 PICO sells such an extension for COP applications to check timing. http://www.saelig.com/product/ta037.htm Quote Link to comment Share on other sites More sharing options...
Adamw Posted March 8, 2019 Report Share Posted March 8, 2019 As a test for the ECU going offline during cranking, can you try grounding pin C23 with a temporary wire/jumper lead or similar (assuming your jumper is in 2007 position). This will give us an idea which part of the circuit is causing the problem. For the triggers you shouldnt need to do much except set the trigger mode to Subaru V7-10 (jdm). An offset of zero would normally be close enough for it to start and run, but you will want to confirm that with a timing light before putting the engine under any load. As for the timing light connection, you can get special leads as gtihk linked to above, but you dont normally need to get as sophisticated as that depending on what junk you have sitting around. Any old HT lead off a distributor car will do, just poke it up the bottom of the coil and rest it on top of the plug is enough. It doesnt need to be a good connection as the spark will jump to the easiest path to ground. Something like this found on google images: Quote Link to comment Share on other sites More sharing options...
Steffen Laursen Posted March 10, 2019 Author Report Share Posted March 10, 2019 Hi Engine is running and most of the issues is solved Reason for not starting and ECU went off line when crancking was pin A14 was still connected to trigger 1 But I have some issues The rpm count jumps up as as soon as rev. is above 3000 rpm so the ECU activates rpm limit Strange as the VR sensor worked fine with OEM ECU but I will try with a new sensor Also having problems to get the DIG 1 and DIG 2 to read the cam signal, the status is off and no signal There is signal from the sensors, they are both controlled with scope at the connector to the ECU The sensors are connected as follows Trigger 1 to A13 Trigger 2 (at the backside of LH camwheel) to A21 Dig 1 to C13 Dig 2 to A11 the low side of the VR sensors are connected to sensor ground together with the shield from the wire Need some help to figure out what is wrong with this signal sssue so I can get the AVCS to work My file is encl VER10 SLA 09-03-2019.pclr Quote Link to comment Share on other sites More sharing options...
Adamw Posted March 10, 2019 Report Share Posted March 10, 2019 Can you do a trigger scope at idle and post it here. Here’s how: https://1drv.ms/v/s!AiYbYlZQuRHPmieMTkwQDCXEb2LY Quote Link to comment Share on other sites More sharing options...
Steffen Laursen Posted March 11, 2019 Author Report Share Posted March 11, 2019 Hi Encl trigger scope at idle and at 2500 rev. Why cant I see/get the DIG1 andDIG2 to read the signals from the camshafts ? Trigger Scope Log idle.llg Trigger Scope Log 2019-03-11 7;15;36 at 2500 rev.llg Quote Link to comment Share on other sites More sharing options...
Simon Posted March 11, 2019 Report Share Posted March 11, 2019 Your trig 2 input is the incorrect polarity. You will need to swap the 2 wires over so we get the inverted signal of what you currently have. The trigger scope only looks at the trig 1 and 2 inputs it is not able to display the digital inputs. Quote Link to comment Share on other sites More sharing options...
Steffen Laursen Posted March 12, 2019 Author Report Share Posted March 12, 2019 Hi Simon Thanks That improved the situation But im still having issues with the DIG 1 and DIG2 for the AVCS, the VR sensors is connected/programmed according to instructions in the help file When i see the status on configuration screen is DIG 1 and DIG 2 just standing as off Can it be the same issus with the VR sensor polarity How do I get the AVCS to work, and how can I see the status on the cam position An other question How do I set up the IAT sensor correctly, I have the Ford Cosworth YB ACT ATS04 ACT NTK Air Temp Sensor but having an issue with correct wiring/setup Quote Link to comment Share on other sites More sharing options...
Simon Posted March 12, 2019 Report Share Posted March 12, 2019 The status will not change the check for the inputs will be to look in the runtimes on the VVT tab and see if they are registering You can also do the cam test function and see if they are giving suitable positions. Im not sure of the correct cal for that sensor you can try some of the predefined ones in a trial and error fashion and you might get one that is correct. Failing that if you take resistance measurements at known temp points you can do a custom cal. One side of sensor should be to sensor ground and the other to a AN temp input. Make sure the fault values are correct for the temp channel, Error low 0.05 (close to zero) and error high 4.95 (close to 5V) Quote Link to comment Share on other sites More sharing options...
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