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2001 S80 Motor resistor/controller problem

Everything on the Volvo S80. Sometimes called an "executive car", the S80 was Volvo's top-of-the-line passenger car. P2 platform.
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SJLucky
Posts: 19
Joined: 22 April 2016
Year and Model: 2001 S80 2.4 140BHP
Location: Scotland
Been thanked: 1 time

2001 S80 Motor resistor/controller problem

Post by SJLucky »

So being a nice sunny day today I thought they would be nothing better to do then spend it with my head in the passenger footwell of the Volvo sorting the fan resistor/controller. First thing that greeted me was green water on the passenger mat, which smells suspicious like coolant. I did notice the coolant was watery when I checked whilst I was buying it by the seller said it was because he had just changed the thermostat. When I started removing the carpets I noticed they were soaking.

SJLucky
Posts: 19
Joined: 22 April 2016
Year and Model: 2001 S80 2.4 140BHP
Location: Scotland
Been thanked: 1 time

Post by SJLucky »

So I carried on and removed the glove box and finally the fan. I noticed there was what looks like corrosion damage to the motor and motor controller
Sight_2016_04_30_134213_709.jpg
Sight_2016_04_30_141235_249.jpg

SJLucky
Posts: 19
Joined: 22 April 2016
Year and Model: 2001 S80 2.4 140BHP
Location: Scotland
Been thanked: 1 time

Post by SJLucky »

I fitted the nice new controller I got from ebay
Sight_2016_04_30_142941_639.jpg

SJLucky
Posts: 19
Joined: 22 April 2016
Year and Model: 2001 S80 2.4 140BHP
Location: Scotland
Been thanked: 1 time

Post by SJLucky »

Ok and now I really need help!

I fitted the new controller and connected the motor up in the passenger footwell, so it could spin without hitting anything, I put the ignition on so I could check it works. My climate control panel is now dead!

So I refitted the old controller and tried again, same result.

I did all this with the ignition off but the battery connected.

Does anyone know if the motor has to be installed in the housing for it to work? Have I caused some fault that needs Dice to reset? Why does this car not like me?

SJLucky
Posts: 19
Joined: 22 April 2016
Year and Model: 2001 S80 2.4 140BHP
Location: Scotland
Been thanked: 1 time

Post by SJLucky »

Managed to fix it, VIDA just told us that there was no signal from the CCM, which we already knew, although it did clear the SRS fault that had also managed to get triggered during the process.

After following wires and looking for something that might have been dislodged we decided to try disconnecting the battery and reconnecting it. It only bloody worked! The old module was still fitted at this point so we disconnected the battery again and fitted the new module.

All fixed, thanks to friend with Vida and who also had the idea to disconnect the battery.

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