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ETM repair

Help, Advice, Owners' Discussion and DIY Tutorials on Volvo's stylish, distinctive "P2" platform cars.

2001 - 2007 V70
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michaelunderway
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ETM repair

Post by michaelunderway » Fri Jun 14, 2019 7:03 am

I know that this topic has been discussed a great deal on this forum and I have read most of the posts but I cant find the answer to my issue. I had an engine system service light come on so I hooked up to Vida and pulled the ECM-9150 and a accelerator pedal code I believe it was ECM-917f? I did the ETM sweep and got 77.65 degree difference ( around 90 on sensor 1 and 16.5 on sensor 2). On the ETM parameters sensor 1 was 108 degrees. Does that mean the the ETM processor is toast or would I be able to install a Saucer contactless sensor to repair it? The car runs great with the exception of the light.



precopster
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Re: ETM repair

Post by precopster » Fri Jun 14, 2019 8:30 am

If it reads 108 degrees on sensor 1 you either have a faulty board or sensor 1 (rear side sensor with 5 contacts and motor) potentiometer carbon film is corroded (chances of a corroded film are very low in my experience)


Current cars:2002 XC70, 2006 Ssangyong Rodius (Stavic), 2006 XC90 2.5T, VW Transporter 2.5TDI

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michaelunderway
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Re: ETM repair

Post by michaelunderway » Fri Jun 14, 2019 11:50 am

If I had a faulty board, wouldn't the affect the side that has sensor #2? If the ETM is retrofit with a contactless sensor, does not that take #1 sensor out of the equation? Sensor #2 seems to be working just fine. If the board is faulty, could it not even be repaired by Xemodex?



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SuperHerman
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Re: ETM repair

Post by SuperHerman » Fri Jun 14, 2019 12:50 pm

I assume you have the MM ETM.

It has been a number of years since I did mine, so I don't recall exactly. My question to you is can you remove the ETM and visually inspect the carbon films. I know that when I did mine I saw they were the cause of the problem, but I don't recall if getting to them was destructive or not. Visual confirmation would help rule out the board.



michaelunderway
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Re: ETM repair

Post by michaelunderway » Fri Jun 14, 2019 2:35 pm

I had done one a few years ago and remember when I removed the sensor, it basically destroyed the pins because they were soldered and riveted.i removed #2 to put on a saucer sensor but the issue this time is #1. At this point I don't have much to lose. I will try to put on a contactless sensor. If the board is fired, I will have to find another ETM and I will just move the contactless sensor to the new one. The only issue would be getting it to the dealer which is 2 hours away to get it reloaded.



precopster
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Re: ETM repair

Post by precopster » Fri Jun 14, 2019 6:04 pm

michaelunderway wrote:
Fri Jun 14, 2019 11:50 am
If I had a faulty board, wouldn't the affect the side that has sensor #2? If the ETM is retrofit with a contactless sensor, does not that take #1 sensor out of the equation? Sensor #2 seems to be working just fine. If the board is faulty, could it not even be repaired by Xemodex?
I've had at least 5 or 6 ETMs come through the workshop with this same problem. The signal amplifier/converter just for that sensor is faulty. It can be perfect in all other ways. It can be repaired by any competent repairer including XeModex. Recently I messaged BBA Remanufacture about this same problem and their technician is confident they too can repair it.

When removing the pins I grind the rear of the pins down to 2 or 3mm with a Dremel and grind about 1.5mm of the top to weaken the spot welds.


Current cars:2002 XC70, 2006 Ssangyong Rodius (Stavic), 2006 XC90 2.5T, VW Transporter 2.5TDI

www.precisioncarmodules.com.

michaelunderway
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Re: ETM repair

Post by michaelunderway » Sat Jun 15, 2019 7:08 am

Thank You.



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