Originally Posted by LarryBible

With engine off, and key off for that matter, disconnect the electrical connector and connect power from the battery with jumpers and a DC ammeter in series with the connection. When you connect you will hear and feel the pump running. You should not read more than 1.3 Amps on the ammeter. If you read more than 1.3 Amps, replace the pump whether it runs or not because it will damage your climate control unit.

Good luck,