Calais FWD V6-181 3.0L (1986)
Air Door Actuator / Motor: Testing and Inspection
Troubleshooting Hints
If air flow does not come from the proper outlets under one or more operating modes, at least one of the air doors is not moving to the proper position.
1. Check for manifold vacuum to the vacuum tank at the BLACK hose from the engine.
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If vacuum is not present, check the hose back to the engine vacuum source.
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If vacuum is present at the vacuum tank, check for vacuum at the PINK hose at the Heater and A/C Control Assembly. If there is no vacuum,
check the PINK hose. If the hose is good, replace the Vacuum Tank.
2. Check the operation of the Temperature Valve by moving the Temperature Lever rapidly back and forth several times. Listen for the valve to
strike the stop at each end of its travel. If the sound indicates that the valve is not fully closing or opening, check the mechanical linkage between
the valve and the Temperature Lever.
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Go to A/C System Check for a guide to normal A/C operation. See: Testing and Inspection
