Hi All, for a few weeks now the rear wiper has stopped working. I changed it being the most simple method first. Still not working, Water pump works as that is done down by the front washer bottle in the wheel arch.

         Took all the rear trim off to find there are 2 block connections in under the rear left panel,( black and cream colour ) just near the corner rear bumper bolts. Have continuity tested from motor plug to these connectors and all are good, ie no breaks in the wire loom that feeds thru rear hatch to bodywork. Sometimes they chaffe or split here due to opening and closing over the years. There was no sign of this wear. Have checked fuses in right front dashboard, again all Ok.

        My question is, where does the wiper wiring loom go to ?  Where does it end up ? I could continuity test from end to end to see if there are any breaks along the way. I have suspected the actual wiper switch control arm, TubyYou,d it to find that you have to remove the airbag, steering wheel etc. Its not beyond my remit but would like to eliminate the stuff inbetween first. ................................mega thanks all.

ANYONE ?

Try here

https://onlinerepairmanuals.com/workshop/skoda/octavia/skoda-octavia-workshop-manual/3328

 

This I think is for mk 1 Octavia though

Edited 14 February, 20242 yr by xman

HI all,

 is there anyone out there who can shed some more light on this non working rear wiper. Last year I did ask around if anyone had a wiring diagram so I could at least chase its route thru the car to enable me to find its end point. I know it probably ends in the fuse/relay area, but cant trace it to any of the muliple relays found. Did ask is the 577 relay anything to do with it...........yes I have checked all the fuses but all good.........its just that I want to establish is it a relay or the column stalk, before I go down the route of removing air bag, covers and finaly the actual wiper stalk assy. Weather is getting bad now and need the rear wiper to work so i can see the rear etc.

           Please anyone .......................

ps.  xman have tried your link but puter says its a threat

 

double ps.......just thinking out loud tho, the wiper wiring might not be run by a relay as I did find a lot of electronic wizidary , chip etc in the small black control box on the side of the wiper assy. Maybe it is the stalk after all, when its giving the input to the wiper.

             Are the stalks able to be stripped and taken apart, clean contats etc like the old school ways? Or will I have to buy a new one..ouch !!

 

A mighty big thanks in advance.

If you share either the reg number or VIN with me, I can dig out the wiring info for the rear wiper.

Not sure if its rellevant but is the rear wiper connected/linked  to the boot lock switch/interior light similar to the the front wipers that don't work with the bonnet up. The front ones caught me out once. Thought they had failed but I had the bonnet open doing a service. 

Alasdair

22 minutes ago, Alasdair1 said:

is the rear wiper connected/linked  to the boot lock switch/interior light similar to the the front wipers

 Yes. It will not work if the boot hatch is open.

 

The rear wiper is operated by signals through can bus on the estate and likely the same on the hatchback (your small black box?)

Probably controlled by the Comfort Control module.

On the Estate the wiring runs behind the right hand side boot trim and into the roof area - possibly runs along on the RH side to the top of the A or B  pillar at a guess.

1 hour ago, pikpilot said:

is operated by signals through can bus

I don't believe this is true.

 

Some of the wiring comes from the Onboard power supply control unit, pins 2 of the white 52 way connector and pin 43  of the black 52 way. These get to the wiper motor pins 2 (INT) and 3 (WW) via a couple of intermediate connectors, a pink one at the left C-pillar and a black one in the rear lid. The wire colours are green/red and green/white respectively, all the way.

the other two connections at pins 4 and 1 of the rear wiper are an ignition switched supply (black/violet)  and an earth (brown).

 

The washer pump motor is solely connected in parallel with INT and WW connections, for both front and rear wash functions, and as well as not being labelled as CAN wiring, this is more evidence in my mind that these wires are nothing to do with the CAN comms system.

 

See this video, had the same problem, just resoldered the motor joints and works fine since then. It is cracked it will be bearily noticeable, should use a magnifier to check it.