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2004 T5 C70 aerial issue ( not the normal issue )

Help, Advice and DIY Tutorials on Volvo's extremely popular car line -- Volvo's 1990s "bread and butter" cars -- powered by the ubiquitous and durable Volvo inline 5-cylinder engine.
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2004 T5 C70 aerial issue ( not the normal issue )

Post by NathansC70 » Sun Apr 07, 2019 2:05 pm

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?



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Re: 2004 T5 C70 aerial issue ( not the normal issue )

Post by NathansC70 » Sun Apr 14, 2019 1:12 pm

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!



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Re: 2004 T5 C70 aerial issue ( not the normal issue )

Post by RickHaleParker » Sun Apr 14, 2019 2:09 pm

2019-04-14 (2).png


Platform: P80 1998 C70, B5234T3, AW50-42, Bosch Motronic 4.4, Special Edition package, Plant: Uddevalla Sweden.

Platform: X40 (Nedcar) 2003 S40, B4204T3, AW55-50/51SN, Siemens EMS 2000. Plant: Born Netherlands.
----------------------------------------------------------------
1997 S90, B6304S, AW30-42, Bosch Motronic 4.4 - Sold

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Re: 2004 T5 C70 aerial issue ( not the normal issue )

Post by NathansC70 » Sun Apr 14, 2019 2:32 pm

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



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Re: 2004 T5 C70 aerial issue ( not the normal issue )

Post by NathansC70 » Sun Apr 14, 2019 2:43 pm

Do you know which relays numbers they are?



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Re: 2004 T5 C70 aerial issue ( not the normal issue )

Post by NathansC70 » Sun Apr 14, 2019 2:56 pm

RickHaleParker wrote:
Sun Apr 14, 2019 2:09 pm
2019-04-14 (2).png
antenna inhibitor relay ? Any ideas which one this is?



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Re: 2004 T5 C70 aerial issue ( not the normal issue )

Post by abscate » Sun Apr 14, 2019 3:55 pm

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

This might be mirrored for RHD though.


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Re: 2004 T5 C70 aerial issue ( not the normal issue )

Post by RickHaleParker » Sun Apr 14, 2019 4:23 pm

That is all I could find on the subject.


Platform: P80 1998 C70, B5234T3, AW50-42, Bosch Motronic 4.4, Special Edition package, Plant: Uddevalla Sweden.

Platform: X40 (Nedcar) 2003 S40, B4204T3, AW55-50/51SN, Siemens EMS 2000. Plant: Born Netherlands.
----------------------------------------------------------------
1997 S90, B6304S, AW30-42, Bosch Motronic 4.4 - Sold

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Re: 2004 T5 C70 aerial issue ( not the normal issue )

Post by scot850 » Sun Apr 14, 2019 5:18 pm

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.


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Re: 2004 T5 C70 aerial issue ( not the normal issue )

Post by RickHaleParker » Sun Apr 14, 2019 6:50 pm

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.

2019-04-14 (5).png
2019-04-14 (6).png


Platform: P80 1998 C70, B5234T3, AW50-42, Bosch Motronic 4.4, Special Edition package, Plant: Uddevalla Sweden.

Platform: X40 (Nedcar) 2003 S40, B4204T3, AW55-50/51SN, Siemens EMS 2000. Plant: Born Netherlands.
----------------------------------------------------------------
1997 S90, B6304S, AW30-42, Bosch Motronic 4.4 - Sold

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