help with heater blower please

[Flash2]

It might be worth using your multimeter to check that there is continuity between one of the terminals at SB29 and terminal 2 under the fusebox, just to rule out a failure within the fusebox itself. There should obviously be continuity between one side of the fuse and the connector.

x relay is behind the dash on the drivers side, number 644....see below. The power supply should be on the 30 terminal (sometimes marked as terminal 3 on VW relays). The relay terminal numbers are shown on the bottom of the relay.

[whiteakita1]

thanks for that, what i did notice after a hour long drive is that all them relays were warm apart from relay 644, thats probably because its got no power going to it so i dont think changing it is going to help me.
im now in over my head and will have to put it into an auto electricians i think as electrics are like magic to me ha.

[whiteakita1]

i dont have that 646 relay next to the 644 relay for some reason.

[Flash2]

i dont have that 646 relay next to the 644 relay for some reason.

If you look at the fuse & relay info posted way back at the start of the thread you will see that the relay next to 644 is the "Trailer voltage supply relay", so I assume your car didn't come with a factory fitted towbar.

Remember to post back and let us know what the sparkie finds wrong with it. I'm sure the next guy to join the forum with the same issue will appreciate it.

[whiteakita1]

Well a mobile auto electrician came out today, he basically couldn't help me any more than you guys already have , he said he thinks it must be a broken wire between the 2 fuse boxes.
I thought that there was no power getting to the 40amp fuse in the dash but with the fuse removed it is getting 1.7v the same voltage as I tested at the blower terminals.
Crasher asked for the wire colours behind the 40amp fuse in the dash and 1 is red/black and 1 is red/yellow.
Why would it only be getting 1.7v ?
Any more help would be great guys otherwise I'm really stuck.

[whiteakita1]

Pic of wires, hope it worksIMG_20181008_091908.jpg

[UMEL]

The washer fuse, #40 , is 20 amp, second row up from bottom, right hand yellow.

DSCN0042.jpg

[whiteakita1]

Every single fuse has been tested, I have never found a failed one.

[whiteakita1]

can i just run a 12v power supply to the 40amp dash fuse that is currently only getting 1.7v ?
if so i could just put a jumper wire over from the fuse next to it.

[whiteakita1]

Fixed it !!!!
Well it's working anyway, I just used the power from another free fuse socket which took me about 1 minute !
Thanks to everyone that helped me.