Solenoid Valve Test

Measure resistance between terminals. Resistance should be 25-30 ohms. Check to make sure output vacuum of valve is okay as follows:

1. Disconnect solenoid valve side vacuum hose at solenoid valve and connect vacuum gauge. See Fig 1. Start engine and run until water temperature indicator points to middle of gauge.
2. Apply 0.3 Amp direct current between terminals, using a 20 Ohm, 5 Watt variable resistor to adjust current. Vacuum gauge should read 2.17-3.35" Hg.
   Fig 1: Testing Solenoid Valve

   Courtesy of NISSAN NORTH AMERICA, INC.

   Do not apply current with valve connected.