Heated Seats Not Working !!! HELP!

[EvolutionV]

Got the kufatec cable through the post this morning so i wired it up but heated seats don't seem to work.
Did a scan with vag com and this came up. Any ideas. Thanks in advance

Tuesday,06,April,2010,21:31:13:59634
VCDS Version: Release 908.2
Data version: 20100326



--------------------------------------------------------------------------------
--------------------------------------------------------------------------------


Address 08: Auto HVAC Labels: 8P0-820-043.lbl
Control Module Part Number: 8P0 820 043 AD HW: 8P0 820 043 AD
Component and/or Version: KlimavollautomatH19 0360
Software Coding:
Work Shop Code: WSC 00000 000 00000
2 Faults Found:

01856 - Temperature Sensor for Heated Seat; Right Front (G345)
010 - Open or Short to Plus
Freeze Frame:
Fault Status: 01101010
Fault Priority: 3
Fault Frequency: 1
Reset counter: 183
Mileage: 28852 km
Time Indication: 0
Date: 2010.01.13
Time: 00:07:33

Freeze Frame:
Temperature: 3.5°C

01855 - Temperature Sensor for Heated Seat; Left Front (G344)
010 - Open or Short to Plus
Freeze Frame:
Fault Status: 01101010

 

[Khufu]

Are you just testing them or is everything all wired in place? Sounds like the temp sensors in the seat arent wired in or correctly wired?

 

[EvolutionV]

Its all wired in place. Yeah i was thinking it must be the temp sensor thats isn't connected up properly? I've checked all the wiring again and its all at the right pin outs so it should work?
If i knew what pins on the back of the climate control go to the seat temp sensors i could check them. Is there anyway of finding out?

Here's the instructions i got from kufatec:-

Manual wiring heated seats Audi A3 8P
Please disconnect the battery before starting installation.
Please wire the loom starting from the seats to the following connections:
Wire configuration:

Red/ White – Steady plus - Fusebox
Wires (Gray) on the opposite needs to be connect to the climate control
Connector D PIN 13, 14
Brown – Ground point A-coloumn
White – climate control connector D PIN 2 (if taken connecting by soldering)
Blue/ Yellow – climate control connector C , PIN 10
Blue/ Red – climate control connector C, PIN 9
Gray with Yellow mark (tull) – climate control connector D, PIN 5
Gray with Red mark (tull) – climate control connector D, PIN 6

 

[EvolutionV]

bttt

 

[Khufu]

had quick look, but might depend on year, this was for 2005:

G344 is the temp sensor
T4p is driver 4 pin connector
T4q is passengers side 4 pin connector
T16d is black 16 pin connector on aircon unit
T16e is brown 16 pin connector on air con unit

Driver: T4p/3 -> br/ws -> T16e/10
T4p/4 -> sw/ws -> T16d/2

Passenger : T4q/3 -> br/sw -> T16e/9
T4q/4 -> sw/ws -> T16d/2 (same one as above - wires join together)

 

[a31.6sport]

Hi I've done same thing but with mine they go red hot and I can't turn them off via control unit do I need to code anything in

 

[riz1990]

Hi What was the resolution to this? was it just a case of fiddling with the wires and making sure they were connected or did you have to replace the temp sensor?

Thanks!

 

[Ceylon]

Both issues sound like they're a result of incorrect wiring to me.

Check your harnesses for continuity against the wiring diagrams & labeling before you fit them. My Kufatec loom had the heat sensors switched incorrectly at the HVAC panel end.

The temp sensor is part of the base heat panel, so to replace you would need an entirely new panel from Audi, but I very much doubt it was at fault.

 

[riz1990]

On mine it's just the passenger seat, If I plug in the VAG-COM It gives the same error as above. I checked continuity between T4q/3 and T16e/9 and there definitely is continuity at that point so I'm think it might be somewhere in the seat where the connection is being lost (hopefully not at the heating element). I think I'll be taking it apart this weekend. :-/

I've tried 2 climate control modules btw and get the same error on both so I'm pretty sure it's not them and wiring behind the unit is all good, also If I choose the advance measuring tool in VCDS and select G344 and G345 the actual temp for the affected sensor (I forget which ones which) is -50, if I swap the pins over that value switches to the other sensor.