EV 5 - Check Rollover/Vent Valve
^ Visually inspect the rollover/vent valve and its connections for pinching, blockage, looseness, or other mechanical damage.
^ Is the rollover/vent valve and its connections free of damage?
YES -- GO to EV7. EV 7 - Check Rollover/Vent Valve Function
NO -- Replace the rollover/vent valve or service the connecting hoses in question.