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A 1991 Maui Blue Reatta showed up at my door Sunday May 28,2023. My 91 Gunmetal Gray Hardtop wanted a Topless Beauty to share space with. Car has 12,750 miles on it and in excellent condition. Problems, radio has no output, lights all light up but no sound, no sound from the cassette either. The change dispenser is missing the guts, the driver vent has a broken tab that allows you to turn off the vent, the right side sun visor clip is broken, tires are 8 years old. I checked the radio fuse on the drivers side panel and it is okay. I checked the big service manual, but keep getting lost in it. Is anyone willing to give me some sage advice on where to look for connectors/fuses/etc. I spent my working life repairing radios and radars, and still remember how to use a multi meter, and read normal schematics. These in the Service Manual will take me a bit to get use to. thanks to all of you. Jim

Before you do a teardown let me see if I can find a pinout so you can do some testing. I'm pretty sure there is a breakout box for that purpose. If you are talking about disconnecting brake lines you may be risking problems that can be avoided by doing some testing.

No experience taking one apart and I believe you venturing into unknown territory. As far as I know, the valve module itself is replaceable but no idea of a source except used takeoffs. Best of luck and I am very interested in what you find.

Check the ABS fuse and relay. You can swap the relays on the firewall as a test to see if the relay is the problem. All three relays are the same. Then try again to check ABS codes.

There shouldn't be any trapped air in an accumulator unless it has been blown completely. The gas pressure inside forces the diaphragm right down to the fluid opening so it expels all the fluid. The pump and accumulator are sort of divorced from the front brakes, similar to a vacuum booster. The rear brakes use direct boost pressure modulated at the master but the front brakes are conventional in that the boost pressure is just that, it assists the pedal. This is the Teves2 pump diagram.

Should have grabbed the pump and motor. I have gone through more of them then I have the brake sensor.

The pressure switches rarely fail to work properly unless fluid leaks into the electrical connection so save the one you removed. The pressure sensor does three things, all related to system pressure. It controls when the pump starts and stops, and it will also illuminate the red light if pressure is low and related to that, it tells the ABS system the pressure is low which illuminates the amber light. If the amber won’t go off but the red light does, it isn’t the pressure switch causing that, it is likely a wheel speed sensor. Pull codes as Ronnie suggested

Pull the codes for the ABS and see what you get' Post what you find here and we might be able to help. Instructions for doing that are in the menu at the top of the page. The part you are working on is the power brake system which is separate from the system that turns on the ABS light.