2004 T5 C70 aerial issue ( not the normal issue ) Topic is solved

NathansC70 · Post by **NathansC70** » 07 Apr 2019, 14:05

I have a Volvo C70 convertible and theaerial wont go up. I have removed the aerial checked the mechanism nothing wrong with it and with a power supply goes up and down fine. I even purchased another aerial second hand and put in car, still no joy. So definitely not the aerial itself. The stereo I have is a sc-901 which has always worked perfectly? Anyone had this issue. Is there a hidden fuse?

NathansC70 · Post by **NathansC70** » 14 Apr 2019, 13:12

Wow no help whatsoever, so if it’s out of the normal issue no ones got a clue or suggestion. Only other forum I have ever found this with is the Civic boys, there solution is take it to the dealer!

Post by **RickHaleParker** » 14 Apr 2019, 14:09

NathansC70 · Post by **NathansC70** » 14 Apr 2019, 14:32

Cheers rick I think checking the grounds is the first port of call, then the relays

NathansC70 · Post by **NathansC70** » 14 Apr 2019, 14:43

Do you know which relays numbers they are?

NathansC70 · Post by **NathansC70** » 14 Apr 2019, 14:56

RickHaleParker wrote: 14 Apr 2019, 14:09 2019-04-14 (2).png

antenna inhibitor relay ? Any ideas which one this is?

Post by **abscate** » 14 Apr 2019, 15:55

Those relays are labeled as being in the electronics unit on left side of engine compartment

This might be mirrored for RHD though.

Post by **RickHaleParker** » 14 Apr 2019, 16:23

That is all I could find on the subject.

Post by **scot850** » 14 Apr 2019, 17:18

On the Volvo aerials there is a single yellow (?) wire on a connector on the back of the radio. Check the wire is not broken or the connector has been accidentally removed. If I recall correctly this is the wire feeding signal to the aerial.

Neil.

Post by **RickHaleParker** » 14 Apr 2019, 18:50

The schematic above is from Mitchell. I think Mitchell got it wrong.

This from Volvo TP3943292 which, according to Volvo Tech Info, Cover 2000 S70, 2000 V70 and 2000 - 2004 C70.
Looks like Scot850's suggestion is the first port of call.
You might try pulling the SC901 out, disconnect the harness, for voltage on Power Antenna motor wire.