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Bart Oates

Having issues with setup of Link G4 PnP V5/6 WRX ECU

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I am attempting to setup up a LINK G4 ecu into my V6 WRX and I'm not having much luck. There are a few different issues. The first issue is that I get an error on the 'AN TEMP 2' channel saying that it is at 5v. So I check the input with a multi-meter and it is at 5v, no surprise there. So I disconnected the expansion connector from the board, and measured the pin itself and it was at 5v. So was 'AN TEMP 3'. But I'm not getting an error for the AN TEMP 3 channel. Why would this be occurring? Is there a Short circuit on the board? What are the AN Temp channels meant to be at when nothing is connected to them?? The next problem I'm having is that I also get an error saying that AN Volt 4 is at ground. So I check the wiring to AN V4 and it seems to be fine when it is disconnected for the ecu, But once I plug it into the ECU it will then be at ground. What could be causing this? The last problem I have so far is that when I try to Calibrate the MAP sensor I get a message saying that, 'MAP Sensor Calibration command failed: Current MAP <5kpa or > 5kPa of baro reading' What would be the issue here? Faulty MAP sensor? Your help on any of this issues would be much appreciated. Thank you for your time. Regards Bart

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Hi Bart.

What you are reading on the ANTEMP2 channel, is 5v because there is a pull up to 5v on that channel (not a fault, it's working correctly).  The error on ANTEMP2 is very indicitive of not having a TEMP sender on the end of that line.  If you do have one on the end, it is faulty. 

ANTEMP3 also has a pull up, hence 5v there, however my guess is the fault values are set to ignore the error (0v and 5v as the low and high = Disable error code throwing for that channel).  To cover that off, there is a very low potential for there to be a fault/short circuit.  When nothing is connected to the TEMP channel in question it should be set to off.

With your next issue, ANVOLT4 has either floated to ground as you have no +ve voltage on that line, or something is grounding it.  Have you cleared you error codes from the ECU and PCLink, you may be looking at stored errors that do not physically exist anymore?

With your MAP sensor Bart, I would guess that you may not have selected the correct calibration to use on that channel.  If you are using the factory sensor, I would be selecting the MAP sensor type as 'Subaru (V1-6)'  This is a drop down just underneath the selection of MAP sensor on the applicable ANVOLT channel.

Let us know how you get on.

 

Jurgen

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Thank you for your reply. I have managed fix all of these issues. The first two problems where just operator error, and having some poor connection at the temp sensor. I couldn't seem to find where the AN Volt 4 channel was shorting to earth, So I just disabled it and I'm using a wide-band sensor instead. The problem with the Map was that it was faulty, So I just got a new 3 Bar link Map and it works great. Thanks for your Help

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