Rear Washer Nonfunctioning

Hello all!

In my continuing saga of slowly fixing all of the various gremlins present in my '99 Disco II, I've run into an issue with the rear wiper washer. In some preliminary troubleshooting, I don't believe it to be a breach in the line going back from the reservoir to the rear wiper blade as I would think that a breach in the line would be noticed as a puddle on the garage floor after refilling the reservoir. My suspicion is that it's the rear washer pump, but there isn't an easy way to verify that and I'm hesitant to drop $90 on a replacement pump only to find that it's something else.

Anyone have any experience troubleshooting the rear washer on the Disco II and can point me to some general troubleshooting techniques?

Is the pump running? Get someone to operate it while you listen for the pump noise. If all seems well, check the hose going to the washer nozzle for blockage. If the pump isn't running, check the wiring for corrosion or crimping of the wires. i haven't had that particular problem...Yet.

'99 Disco II
'95 R.R.C. Lwb (Gone...)
'76 Series III Hybrid 109
'70 Rover 3500S