Solenoid Leak Test
- Connect an ohmmeter between Black and Yellow terminals on pressure switch connector. Apply battery voltage to Red/White terminal on pump motor connector. Install a switch in this test lead. Ground Green terminal. Turn switch on. Allow pressure to build inside accumulator. Check for continuity.
- Once continuity is indicated, allow pump to operate 4 seconds more. Turn switch off. Check for continuity 60 seconds after switch was turned off. If there is no continuity, check for faulty driver "O" ring or leaky solenoid. Apply 12 volts across Black (negative) and Red (positive) terminals of solenoid.
- If solenoid hisses or squeaks, replace solenoid. Ensure solenoid clicks into position. Check pressure switch for continuity within 60 seconds. If there is no continuity, replace solenoid.