Still no joy on getting ABS dash light to go out.

The sensors check OK
The sensor wiring to the control unit plug are OK
The overvoltage relay is OK
The ABS control unit is OK
The ABS hydraulic unit sensors visually look fine.

Based on schematic not sure what else needs checking.

ideas?

Swapped the ABS control unit - no joy, light still on. Swapped unit is used, possibly bad. Checked resistance of each wheel sensor, all reading around 950 ohms, in range. What next? 1) Try another control unit 2) More wire testing at the control unit connector, checking if wheel sensor wires are int...

I have a 1986 E30 325e, stock. It has been no-op for 5 years and I'm getting it rolling again. The ABS did work and the light operated properly but not long before being parked, the light started to occasionally gone on briefly then off again. Currently, the ABS dash light goes on when the key is in...