I copied this from another site. Perhaps if you look at your four pin plug and see if it has the same coloured wires as described below. If so, follow the instruction and hey presto. Makes sense that the procedure would be similar as both used Testbook, Just a different plug.
Troubleshooting Why Your ABS Light is On - Range Rover Classic and Discovery 1
If your ABS Light is illuminated and you are not near a dealer or other diagnostic equipment, you
can use the blink method to determine what is causing the fault. First locate and remove the ABS
Warning Light Relay from the group of relays underneath the seat (consult owner's guide for
specific vehicle location, if needed). Then, find the blue 4 pin connector under the front of the
driver's seat on the RR (or under the black, cardboard lower dash drivers side on the Disco-1) and jumper the
black to black/pink wire with the key on – a paperclip will work.
ATTN: Only pre OBDII Disco's had the blue 4-pin connector. The base is blue and I am pretty sure it is X104 in Rave.
Tom.
