New Accumulator was needed. TC flash and pump sound on every press of brake pedal. I had the ABS and TC lights on intermittently already due to another problem. I installed a new accumulator first.
I used an Eclipse brand, large shifter. It happens to have a narrow tip. It fit around the bulb under the fusebox. I hit it with a hammer to crack it loose.
Straight away new one got pressure and I get 4-8 presses of brakes before pump runs.
My next job is sorting out my intermittent ABS and TC lights which seem to be electrical related.