Hello folks. Been very pleased with my VRS for 18 months but now has illuminated abs warning light and tyre pressure warning. Scan reveals no signal from either rear wheel. I wrongly thought there would be a joint to a common cable somewhere at the rear or under the rear seat, it's looking like the abs signal travels up each side of the car.

Is there a joint somewhere else at the front?

I don't mean to ask any stupid questions but I have a balance issue that makes lying down to work at something really really difficult.

Thanks in advance for any advice

From memory on my sons MK1 it goes from wheel sensor along rear beam and into car under rear seats then along I think under plastic door base trims into front then through bulk head to ABS unit. I have a feeling there are connections under plastic base/carpet trim at rear doors.

Alasdair

According to the wiring diagram each abs sensor have its own wire without joint

G44	Rear right speed sensor
G45	Front right speed sensor
G46	Rear left speed sensor
G47	Front left speed sensor
J104	ABS control unit
J519	Onboard supply control unit
N133	Rear right ABS inlet valve
N134	Rear left ABS inlet valve
N135	Rear right ABS outlet valve
N136	Rear left ABS outlet valve
T38a	38-pin connector

Looking at the diagram G44 and G46 have round sections in cable which I assumed was a join. The front dont so I assume go direct.

Alasdair

yeah my bad, i assumed by the dedicated pin that the wiring was separate, it could be a joint point worth to check

If theres a join I would think its under rear seats or perhaps under plastic sill guard at base of doors. Best option would be to find where they come into car and trace towards front. Reckon the rear section if joined will be shorter and easier to find/replace/repair. Just noticed though that theres no signal from either and the original post said it looked like they travel seperately so unless they meet and use one connector at some point cant see why both have gone at the same time unless they share an earth/common cable.

Alasdair

Edited Monday at 12:591 day by Alasdair1

Thanks for the input

Yes Alasdair I was hoping it would be one cable communicating with the rear. Is there any way to test the module?

Found this on LLL parts. Its the rear wiring harness for abs rear abs sensors. It looks like the cable joins and runs as a single cable with a connector and then to the front. Cant seem to paste picture but link might work.

https://www.lllparts.co.uk/product/6q0927904f/wiring-harness-for-speed-sensor-6q0927904f

Went for a 2010 fabia although should be able to narrow it down by inputing VIN.

Alasdair