Posted on March 4, 2022 by Jack BobCat 753 – REAR AUXILIARY DIVERTER VALVE (SINGLE SHUTTLE) – Solenoid Testing Use a test meter to measure coil resistance [Figure 20-100-12]. Coil wires do not have polarity. Correct resistance is 6-9 ohms. Replace the test meter with 12 volt power. You can see and hear the spool shift.