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650b electric fan signal missing

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Guesten
Posts: 3
Joined: Sun Nov 24, 2019 10:37 pm
Year and Model: 2005 Volvo v70
Location: Sweden

650b electric fan signal missing

Post by Guesten »

Hello! I have a electric fan that is not working and have never done! I have checked the 60a fuse under electric fuse box in the engine bay, i have voltage in the thick cables that go to the fan. I have tried and hooked up another used fan and its not working either.

I have autocom diagnostic so i can activate the fan manualy. It works on other v70 but not mine.

What should i check???
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RickHaleParker
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Re: 650b electric fan signal missing

Post by RickHaleParker »

Check ground 31/2. It grounds the Fan Control Module and the fan motor.
31-2.PNG
31-2.PNG (85.91 KiB) Viewed 39 times
1998 C70, B5234T3, 16T, AW50-42, Bosch Motronic 4.4, Special Edition package.
2003 S40, B4204T3, 14T twin scroll AW55-50/51SN, Siemens EMS 2000.
2004 S60R, B8444S TF80 AWD.
2005 XC90 T6 Executive, B6294T, 4T65 AWD, Bosch Motronic 7.0.
Guesten
Posts: 3
Joined: Sun Nov 24, 2019 10:37 pm
Year and Model: 2005 Volvo v70
Location: Sweden

Re: 650b electric fan signal missing

Post by Guesten »

RickHaleParker wrote: Mon Nov 25, 2019 3:26 am Check ground 31/2. It grounds the Fan Control Module and the fan motor.

31-2.PNG
Hello sir and thanks for your reply! I unbolt the 3 wires, sanded all contact areas and bolted them back again, not any good news. Its the same:( more ideas? And thanks from sweden!!
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