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Dual THERMACTOR Air Control Solenoid Valve
The function of each valve can be determined by externally energizing valve with vacuum lines attached. See THERMACTOR AIR VALVE OPERATION
. Check resistance of each solenoid. Resistance should be between 51-108 ohms when checked at coil terminals. If the resistance is not within these values, replace solenoid.
THERMACTOR AIR VALVE OPERATION
| Airflow |
TAB Solenoid |
TAD Solenoid |
| Upstream |
On |
On |
| Downstream |
On |
Off |
| By-Pass |
Off |
Off |