Faulty car radio

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KenLowe
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Faulty car radio

Post by KenLowe » Sat Jul 06, 2019 9:25 am

I've got a faulty after market AVIC-EVO1-PL2-VAL Pioneer car radio, and I think I've narrowed the fault down to the canbus interface unit that picks up various signals from the bus, and outputs them as hard wired signals to the radio (accessory switch, light switch, reverse, speed pick up etc). The radio, canbus interface (Connects2) and associated wiring harness was supplied by Pioneer reseller (in mainland Europe) as a complete package for my VW Polo. Pioneer UK are being a bit difficult about it, since the Canbus unit not a Pioneer manufactured part. Connects2 don't offer this unit to the general public, but I am in discussions with them at present, and they're certainly being more helpful at this stage (asking me to check some basic stuff that I've already checked), but I'm still not sure where that's going to end. The whole thing is just out of warranty which is making things a bit more difficult.

Anyway, to the questions. What is the odd 13 pin connector at the back of the Connects2 unit? There's an equivalent connector on the back of the Pioneer unit with a cable to connect between the two. I've opened up the Connects2 and notice there's an IC (Chrontel 7026B) that the datasheet refers to as being a TV/VGA Encoder. I'm therefore guessing the 13 pin connector provides some form of VGA output to the head unit to allow car specific information to be displayed on the head unit? Is this a standard connector? I was struggling to find any information about it on the net.

Any thoughts???
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20190706_095606.jpg
Connector at back of Connects2
20190706_100906.jpg
Inside the Connects2

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1024MAK
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Re: Faulty car radio

Post by 1024MAK » Sun Jul 07, 2019 5:15 pm

I’ve been “playing” with electronics since 1986, although I’ve not had anything to do with car audio during the last 20 years other than installing replacement CD/radio units in members of the family’s cars.

I’ve never seen a connector like that before.

Mark

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topcat96
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Re: Faulty car radio

Post by topcat96 » Sun Jul 07, 2019 7:11 pm

That looks like a 13 pin Quadlock connector socket. Developed way back when for the car industry to consolidate and reduce the car's wiring harness by having a single unit for all sensor inputs, which in turn sent the information to the display (as you have surmised already). These days I believe they are all 16 pin sockets because of extra sensors, Apple, etc. ... Definitely not an of-the-shelf component I'm afraid, so no wonder Pioneer are being a bit wary in dealing with you.

Other than that, that's where my knowledge on such things end I'm afraid.
Last edited by topcat96 on Sun Jul 07, 2019 7:20 pm, edited 3 times in total.
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KenLowe
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Re: Faulty car radio

Post by KenLowe » Sun Jul 07, 2019 7:43 pm

Oh. That's interesting. I always thought the quadlock connector was the much larger square connector that takes the power, speaker and various other signals from the car to the radio. This odd 13 pin connector runs between the Connects2 Canbus interface and the head unit. A wider quadlock search still doesn't bring up any useful results.

Thanks, both for the info.

Fraser
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Re: Faulty car radio

Post by Fraser » Wed Jul 10, 2019 11:03 am

How do you get a radio out of the dashboard? I have tried to use a pallet knife at the sides.

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1024MAK
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Re: Faulty car radio

Post by 1024MAK » Wed Jul 10, 2019 1:27 pm

Depends on the type of clips that hold it in. There are a number of types of special tools.
One type is two U shaped pieces of 3 to 4mm diameter metal rods with tapered ends.
Another type is a pair of two flat pieces of thin metal with shaped ends.

Use a search engine “car radio extraction tool” to see what I mean.

These tools unclip the radio/head unit if inserted correctly. The clips are rather hard to disengage otherwise.

Mark

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