Jump to content
Do Not Sell My Personal Information


Dab roof aerial on mk1 yaris


Recommended Posts

Hi,

I'm having trouble installing a DAB aerial to my yaris mk1. 

Removed old one, screwed new it on but radio shows 'antenna error'. Bought another + same problem. 

The original factory fitted fm aerial has 2 cables: the mini coax + another black cable that connects to a socket on another cable. It has some foam around it so i initially thought it was 12v power. However no voltage with my multimeter. Then i thought it was earth but again i cannot get low resistance to the chasis. 

Also tried temporary connections with aerial in inside so i could make it sure touches earth + 12v . Still no go 

Link to comment
Share on other sites


4 hours ago, flash22 said:

What part did you change, just the whip on the roof ?

No, the entire aerial and wiring. Old one was only fm/mw/analogue  New one is DAB/ fm etc

I presume old one is passive. New is active.

Link to comment
Share on other sites

The DAB aerial will require power. On my Corrado I've stuck it to the screen taking a ground from the A pillar. The passive roof aerial remains and is for normal radio

Link to comment
Share on other sites


On 11/20/2021 at 5:11 PM, flash22 said:

Oem is passive on the mk 1 just a coax to the radio

what aerial did you buy ?

Did you wire it back to the radio ?

No, i have 2 cables on my factory fitted fm aerial . One is coax other maybe earth ?

Link to comment
Share on other sites

For DAB you have to change the Aerial completely, a DAB and FM/AM aerial has a power feed and 2 coax cables on for DAB and the other for FM

Post pictures of the new aerial and the old aerials

what Radio do you have

Link to comment
Share on other sites

Some pics for you lovely people on this yaris mk1.

What is the black cable in the foam ? It plugs into a socket behind the radio.

Is it ground ? If so, is the roof panel not earthed and do i need a wire to connect to this socket ? 

20211125_104154_copy_1008x490.jpg

20211125_105104_copy_490x1008.jpg

20211125_104008_copy_1008x490.jpg

 

 

Screenshot_20211125-092655_eBay_copy_270x275.jpg

Link to comment
Share on other sites


3 hours ago, flash22 said:

What radio do you have ??

What make is the aerial ? Some DAB aerials are 5v and require a setting to be changed on the radio

The radio is a pioneer x840dab. 

The aerial is unbranded from ebay. Advertised as requiring 12v.

Link to comment
Share on other sites

57 minutes ago, flash22 said:

Go into the setup menu and check the DAB ANT PW setting, passive aerials need it off, active need it on (5V is injected up the DAB coax)

Tried power on + power off. Still no go. 

Found the little white plug/socket/foam is 10.1v. Very odd supply i would have thought. Tried that + the cigarette lighter 12v + earth and no nothing. 

 

Wonder if i may have blown the aerial amp ? But that is 2 aerials now not working, same aerial, 2 suppliers. 

Link to comment
Share on other sites

The 12V rem from the radio is enough, is the blue wire from the radio disconnected (bullet connector)

never had a problem with  Connects2 aerials for DAB but they are not cheap

eg. CT27UV71

the alternative is to use the oem aerial and a dab splitter

eg.CT27AA136

 

PS. the aerial gets its ground from the outer shield of the FM aerial, so the FM and DAB need to be connected

 

Link to comment
Share on other sites

57 minutes ago, flash22 said:

PS. the aerial gets its ground from the outer shield of the FM aerial, so the FM and DAB need to be connected

 

Did not know this. Will try it at first light !

Link to comment
Share on other sites

Plugged in fm aerial (for ground), selected aerial=power on, 12v connected, dab smb connected, still antenna error !Bugger.

Think I'll ask my friendly car radio/alarm place if they can test the dab aerial. 

Link to comment
Share on other sites

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.

Guest
Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

 Share

×
×
  • Create New...




Forums


News


Membership