london_chris

helping a mate source an abs fault, the abs warning light is on all the time, the wheel sensors are all ok,
gone back to the abs relay, the fuse is fine (20a) attacehed to the relay, power in is fine through the relay, there just appears to be no switched feed to power the relay on and latch it?
anyone come across this fault before?
have read the wiring diagram via autodata and the component test section and the wiring diagram appear to have conflicting information...........

Caddyshack

Cant you run a switched live to the relay as a test? If you can take a pic of the relay and post it up I can see if I still have a spare kicking around to post to you as it might just need a relay swap?

martysmartie

iTrader: (1)

I should think that is correct, as the pump does not run continuously and is switched via the pressure switch.

Moreover, if this were faulty you would have no pressure!

How have you determined the sensors are ok?

Martin

doga-ot

iTrader: (1)

If relay is ok it pressure switch fault which is very common, means buying 2nd hand abs mastercylinder/servo as no one will sell switch seperate!

Caddyshack

I have those bits in good condition if you need to buy 2nd hand.

pauloopnorth

Just a note regarding the pressure switch , I have discovered the P38 range rover uses the same pressure
switch

pauloopnorth

and I think the saab 900 does too but not seen that for myself

costina

iTrader: (1)

Good info there Paul