December 19, 2012

How to access ECM & TCM on 850, S70, V70, XC70, C70

How to remove ECU and TCU Modules

ECU access tutorial

MVS Forum member¬†gchelidze tells us in text and (24!) photos how to access your ECU and TCU modules from under your Volvo 850, S70, V70, XC70, C70′s hood. He writes:

“WARNING: I have done this procedure twice – once with battery lines connected and once with negative line disconnted. I didn’t see any difference. However I would disconnect it if I have to do it again just in case. Do at your own risk! If you decide to disconnect a negative line from a battery, make sure you have a your audio system unlock code. You will be prompted for it after you connect a battery back again.”

1. Tools you’ll need: hex socket M10, screwdriver, thin metal stick
2. Location: TCM is located in a black rectangular box at front right side with yellow sticker on it

DIY access/remove ECM & TCM on 850, S70, V70, XC70, C70

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Tags computer, DIY, ecu, engine control module, tcu, Tutorial
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