Power loss to several elements of '91 300 SL

[Robert Deming]

I seem to have lost power to the Fuel Injection Control Computer, the ABS controller and partially to the Convertible Top Controller. I have no fast-idle at start and lean mixture during warmup. The ABS warning light is on continuously, and the Top Control Switch blinks when I try to retract the top. I am trying to use AlldataDIY drawings to find a common element, but so far I can't. All fuses are OK, and except for the listed symptoms, the car is OK.

I would appreciate any suggestion as to the the failure, or any suggestion regarding power and ground distribution drawings which might be more useful than those from Alldata.

Thanks, Bob D.

[Frank Reiner]

The symptoms suggest a fault with the overvoltage protection relay (OVP),
and in particular with the fuse(s) mounted on top of the relay.

[Robert Deming]

Frank,

Thank you very much, you were absolutely correct. It was the 10Amp fuse on top of the OVP relay. I have seen the relay in my diagram search, but never the fuse. I'll keep looking, and perhaps find an easier set of schematics. In the meantime, all symptoms are corrected.

Thanks again.

Bob D.