[JohnS4]

If you want to use the factory camera you will need a module. Only fit parts that are period correct (ie same year) for your car. Familiarise yourself with parts catalogue diagrams, such as this ...

2014 A4 Avant

https://www.lllparts.co.uk/catalogs/audi/RDW/A4Q/736/9/907/907040

Here you can see the control unit (item 1) is part number 8T0 907 441 C

and here the handle/camera (item 16) is part number 5N0 827 566 AA

https://www.lllparts.co.uk/catalogs/audi/RDW/A4Q/736/8/827/827010

The camera control unit does not have component protection. If you buy a used module and are lucky it may be suitably coded. If you change the coding you will have a calibration error until you perform the camera calibration procedure.

Hope this helps.

 

[JohnS4]

Personally I would only fit period correct parts as we know they will work. I don’t know where you got your information regarding the revision A unit. It may work or it may not work and you have to buy another one. That’s a risk you have to take.

 

[JohnS4]

I don’t know what year your car is or if it is an avant or saloon. Use the LL parts website to cross reference the correct part numbers for your region, year and model.

 

[JohnS4]

@dativus If you buy the harness from Kufatec you will also receive fitting and coding instructions (and support) if you buy elsewhere it may be cheaper but you probably wont have coding instructions or any support.

 

[JohnS4]

You may not need the holder. This was already present in my car as it had other modules mounted on the front.

 

[JohnS4]

You might not need it. It was already fitted in my car from the factory.

 

[JohnS4]

I guess so. You will probably have camera open circuit errors in the RVC module.

 

[JohnS4]

You need to code the 19 gateway for RVC or you will have module incorrectly coded error.

Your 6C coding doesnt include APS+. Try 1020006.

Small note, xxxxxxx7 is the last digit if you have an avant (as I do)

 

[JohnS4]

And if you want to calibrate your camera….

Backup Camera Calibration

Long story short, my camera was calibrated about two months ago, and it took 3 hours. Wanting to save myself that hassle in the future, I recorded the pertinent numbers (info from http://wiki.ross-tech.com/wiki/index.php/Audi_A4_%288K%29_Back-Up_Camera#Special_Procedures ). After finally...

www.audizine.com

 

[JohnS4]

Module 19 gateway installation list. Tick 6C RVC option.

 

[JohnS4]

It’s an option in the gateway installation list. It will be there.
Do you have any module incorrectly coded errors?

 

[JohnS4]

As you changed the coding try a forced MMI reboot.

 

[JohnS4]

Perhaps it is best to wait until you have the camera fitted, then continue your testing.
You mention that your MMI 3G+ is also retrofitted. Did the APS plus display correctly on the MMI before you fitted the rear camera module?

 

[JohnS4]

Try a full MMI reset.

 

[JohnS4]

@dativus -- Take a look at this UK post from 2017: 7X8 Rear View Camera Advanced .. Retrofitted! --g

I’m in that thread too!

 

[JohnS4]

Calibration error will remain until you complete a calibration process.
open circuit is because you had the RVC camera unplugged. You can clear that and it should not come back.
Where did you pick up power and where did you tap the CAN bus?

 

[JohnS4]

What happens if you press the parking aid button?

 

[JohnS4]

I would strongly recommend adding a fused supply to the RVC as mentioned by @DrGER. Id also use the factory location (and 5A rating) for the fuse.

You have the same RVC module as me, (APS+/ Avant) and the coding is the same so that should be ok.

Where did you connect the video signal from the RVC to the MMI? You did not mention this yet. The wires from the RVC should go to pins 11 and 5 in the quad lock, not the spare fakra connector on the back of the MMI, this is for the TV tuner input.

There are 3 fakra connectors on the RVC, brown, green and grey. Brown is not used, green is the feed to the MMI, grey is from the camera. Check these are correct.

Lets also check the multi plug into the RVC as you purchased a harness from the web (some are not pinned correctly!)

39 - Orange/Brown - CAN LOW
40 - Orange/Green - CAN HI

43 - Blue/Red - module +ve
44 - Brown - module -ve

47 - Brown/Blue - camera -ve
48 - Red/Blue - camera +ve

The CAN connection should be done in the CAN disconnector. This is shown in the Kufatec instructions in the right hand end of the dashboard, on a facelift this CAN connector has moved to the bottom of the A pillar (next to the pedals if RHD). CAN H and CAN L should be on PIN 19. PINS 14 to 23 are the convenience bus, so any of these is OK. 13 to 9 is another bus and won't work. 8 to 1 is yet another bus, also won't work

 

[JohnS4]

Once the coding and the wiring above is validated, Im pretty much out of ideas.....

 

[JohnS4]

It looks like you are just missing the video signal. Double check the video pin connections/polarity on the MMI (just to be sure) and check the Fakra connectors on the RVC for broken pins.

Have you confirmed power and earth connections with a multimeter on the camera?