Pressure Limit Valve
- Disconnect pressure limit valve connector. Check resistance of isolation valve solenoid winding between terminals No. 2 and 4 of pressure limit valve. See Figure. Resistance should be 3-6 ohms.
- Check resistance of dump valve solenoid winding between pressure limit valve terminals No. 1 and 4. Resistance should be 1-3 ohms.
- Check resistance of reset switch across terminals No. 3 and 4 of pressure limit valve. Resistance reading should be infinite. If any resistance value is not within specification, replace pressure limit valve as an assembly.