Brad Foreman Posted August 19, 2023 Report Share Posted August 19, 2023 so im curently trying to start my car and my lift pump fault codes instantly. for the life of me i cant figure out how to show what the fault is except FAULT- tried running a time plot but it doesnt even show anything when the fuel pump sounds it also sounds like its PWM when i dont want it to . my ecu is set to STANDARD fuel pump operation time plot shows 10000 hz and in the output i cant change the frequency Quote Link to comment Share on other sites More sharing options...
Brad Foreman Posted August 19, 2023 Author Report Share Posted August 19, 2023 also i cant make the water pump turn on or make the fans turn on either have attached my tune file and pdm file if anyone could have a look please brad r32 rb25.pclx Brad PDM.pdmc Quote Link to comment Share on other sites More sharing options...
Brad Foreman Posted August 19, 2023 Author Report Share Posted August 19, 2023 ok disregard the last file i had a few things messed up. now if i test water pump. it works if i test fans - they work. if i test lift pump - it works but i think i have no can communication and no can auxs are turning on this pdm file is to what i can see configured how it should be to turn fans and water pump and fuel pumps on via can aux 1 2 3 respectfully. ive read through the help file on how to get the can communication to work but i cant seem to get it to Brad PDM.pdmc Quote Link to comment Share on other sites More sharing options...
Adamw Posted August 19, 2023 Report Share Posted August 19, 2023 I had just made some changes to your first file so give this a go. If no good ill have a look at your 2nd one tomorrow. Also, your ECU firmware is quite old so you should update that too. Brad PDM V2.pdmc Quote Link to comment Share on other sites More sharing options...
Brad Foreman Posted August 19, 2023 Author Report Share Posted August 19, 2023 awesome i just updated the firmware im pretty confident i have no can comunication as if i go to test mode on my fans on the pdm - fans work. my water temps currently at 13 degrees and if i set fans to come on at 10 degrees i get nothing Quote Link to comment Share on other sites More sharing options...
Adamw Posted August 20, 2023 Report Share Posted August 20, 2023 Fan outputs only activate when the engine is running. If there is no CAN your CAN function statuses will say "OFF", if there is CAN they will state "Inactive". Quote Link to comment Share on other sites More sharing options...
Brad Foreman Posted August 20, 2023 Author Report Share Posted August 20, 2023 Cool well they do say inactive. But the pumps won’t prime or come on when cranking Quote Link to comment Share on other sites More sharing options...
Adamw Posted August 20, 2023 Report Share Posted August 20, 2023 Attach a log. Quote Link to comment Share on other sites More sharing options...
Brad Foreman Posted August 23, 2023 Author Report Share Posted August 23, 2023 ok i have progress ! i changed some things but basically ended up changing it back so im unsure what the issue was now when i turn the ignition on i have 1x fuel pump prime which is the one assigned to can aux 1. the other 2 pumps assigned to can aux 1 status arent working. but i dont have water pump which is on a different can aux. fans i dont know as motor isnt running ive attached my PDM file and tune file if you could take a look and see what the difference is please brad r32 rb25.pclx all fuel pumps are working ! i had to change the condition status to inactive and now all 3 fuel pumps are operating. but for the life of me i cant get the water pump or fans to operate. i dont understand what the compound ID is and i think thats what the issue is as thats what made my fuel pump start working updated file with fuel pumps working Brad PDM V2.pdmc Quote Link to comment Share on other sites More sharing options...
Adamw Posted August 23, 2023 Report Share Posted August 23, 2023 You should not have all these extra CAN functions set up, you should just have the first one with ID 500 enabled. Apart from that everything works fine for me with your config. Quote Link to comment Share on other sites More sharing options...
Brad Foreman Posted August 24, 2023 Author Report Share Posted August 24, 2023 Will the water pump not work via can aux with the engine off like the fans ? Even tho my conditions on my ecu don’t require the engine running ? Quote Link to comment Share on other sites More sharing options...
Adamw Posted August 24, 2023 Report Share Posted August 24, 2023 4 hours ago, Brad Foreman said: Will the water pump not work via can aux with the engine off like the fans ? You can view the CAN Aux runtimes in PC Link, including status, duty and frequency that is being output. What do they tell you? Quote Link to comment Share on other sites More sharing options...
Brad Foreman Posted August 28, 2023 Author Report Share Posted August 28, 2023 Finally got back to the car. have the water pump fully operational with the engine running. Can aux becomes aftive and dc relates to the table but my fans. If I go onto the pdm and push test. They work no problem . When water temp becomes above the set temp. Can aux for fans becomes active but straight away says fault and red light on the pdm any ideas what would cause this ? Quote Link to comment Share on other sites More sharing options...
Brad Foreman Posted August 28, 2023 Author Report Share Posted August 28, 2023 Ok it appears it goes last 60 amps on start up which is the highest inrush current u can set. Is there a way I can have a soft start on the fans to reduce that Quote Link to comment Share on other sites More sharing options...
Brad Foreman Posted August 28, 2023 Author Report Share Posted August 28, 2023 On the pdm test mode I put it on PWM and it only peaks around 50amps. But I’m trying to figure out how to make the fan PWM on the ecu but I can only seem to achieve this using a GP PWM and use a table . Is there anyway to use the normal fan channel with the hysteresis etc but just soft start them Quote Link to comment Share on other sites More sharing options...
Adamw Posted August 28, 2023 Report Share Posted August 28, 2023 Set the Inrush trip time longer, it looks like it only lasts half a second or so. Quote Link to comment Share on other sites More sharing options...
Brad Foreman Posted August 28, 2023 Author Report Share Posted August 28, 2023 It was on 2. I changed to 5 and still does it Quote Link to comment Share on other sites More sharing options...
Brad Foreman Posted September 2, 2023 Author Report Share Posted September 2, 2023 so success everything is working . i have PWM the fans from 50% to 100% over a 2 degree span and it works amazing and doesnt draw anywhere near as much current i currently have them on 125hz and it seems fine but might play around with the frequency will i need a flyback diode on the fan circuit using the PDM how i am? Quote Link to comment Share on other sites More sharing options...
Adamw Posted September 3, 2023 Report Share Posted September 3, 2023 No, it is designed for inductive loads. Quote Link to comment Share on other sites More sharing options...
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