6L80 - TECHM PRESSURE SWITCH ELECTRIC CIRCUIT BENCH TESTING -

[@ServiceDWT]

The common connection is the middle of the group of three pins. If you use the left of the two pin group and cycle the switch at the outer end of the group of three you'll get a response on more than one switch which shows the test is not isolated to one switch circuit.

[@scottLY8870]

Great.. This will help me find out if they are working. Appreciate your attention to this process.

[@scottLY8870]

Can you clean the pressure switch that is stuck closed?

[@HVACRServiceTech]

Oh it's been a minute since I've talked about this. You rebuilding a TEHCM?

[@scottLY8870]

No .. I have a solenoid that is stuck closed.. I was told I could clean it with Mass Airflow cleaner to loosen it up (?) @@HVACRServiceTech