help with heater blower please

[Crasher]

Just noticed that this is a UK registered car **11 *TF, I thought you were in NZ.

According to the Pr code list you have KH6 Climatronic

The fan is powered from fuse SC38 on the dash right hand side when you open the door, behind the panel.

Also check fuse SC15 which is the control unit power.

Fuse SC38 is powered by two different methods depending on build date and this change is described as “gradual introduction” which is about as much help as a blower that does not blow! The change is only visible by checking the colour coding of the 6mm² csa cable to the SC fuse board line 30a rail to see if it is black or red/green and that is not easy to do.

On both versions the feed is from a junction point called B319 which is also helpful described as being “in main wiring harness”, no ****, I thought it would have been under the back bumper! Stupid diagrams!

The junction B319 also supplies the J59 relay also known as the X relay but J59 only powers fuse SC40 and not the fan so X circuits not working are a symptom of the X relay not being supplied (as opposed to triggered) and not the X relay itself being faulty. If fuse SC40 has no power from the X relay then the front and rear wipers won’t work

B319 is supplied from fuse SB29 in models with the E-Box low like yours so check this has power.

Check that lot, I need to get on now.

[whiteakita1]

i am really greatful for the reply crasher but honestly i have no idea what any of it means, electrics are way over my head.
can anyone on here decipher crashers brilliant description and tell me exactly which fuse i need to check ?
sc38 and sc15 seem to be the ones that need checking but can anyone tell me which ones these are ?

[whiteakita1]

i cant find any diagram anywhere for the fuse number locations for my b7 passat.

[whiteakita1]

Ok, I have replaced them 2 fuses, 1 is 10amp the other is 40 amp but fan is still not working.
When I turn the heat knob I can hear motors moving but the fan does nothing.

[Flash2]

can anyone on here decipher crashers brilliant description

Yeah, he is basically telling you what I already said....check the power supply to the fuses.

If you find there is no 12v power supply to SC38, check the fuse that supplies power to SC38, which is...."SB29 in models with the E-Box low like yours". E-Box is Volkswagen speak for engine bay fusebox.

can anyone tell me which ones these are ?

Fuse locations are shown at the link in post #8 .

[whiteakita1]

Any help please crasher on which/where the X relay is so I can change it.

[whiteakita1]

I have removed/checked every single fuse I can find and they are all ok.

[whiteakita1]

Fuse sc38 has no power, which fuse in the engine bay powers that ?
I

[whiteakita1]

Which one is sb29?

[whiteakita1]

Ok I found sb29 and swapped it with the identical fuse next to it and nothing has changed.
I still have no power to sc38.
Heater fan and windscreen washers don't work.
Wipers do work.
What have I got left to check ?