AC/heat switch and blend motor testing
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AC/heat switch and blend motor testing
Hello all I have looked on her for testing but was unable to find anything pertinent.
I have a 1997 f250 5.4 2wd truck
AC works fine but heater does not. No vacuum leaks detected.
Coolant is OK
I pulled the lower cover off the center to look at the Heater/AC blend door motor.
With the engine running and up to temp I sent the system to max ac and turned the temp control to full hot and I did not see the arm on the Motor turn at all.
Long story short I'm looking for a test procedure to test the Blend switch and the blend motor. specifically what pins are what and how to test the temp switch and how to test the Blend motor. But I can not fins a wire diagram that specified what pins are what and how to test. Images and diagrams would be great.
any help would be great as its starting to get cold out.
I have a 1997 f250 5.4 2wd truck
AC works fine but heater does not. No vacuum leaks detected.
Coolant is OK
I pulled the lower cover off the center to look at the Heater/AC blend door motor.
With the engine running and up to temp I sent the system to max ac and turned the temp control to full hot and I did not see the arm on the Motor turn at all.
Long story short I'm looking for a test procedure to test the Blend switch and the blend motor. specifically what pins are what and how to test the temp switch and how to test the Blend motor. But I can not fins a wire diagram that specified what pins are what and how to test. Images and diagrams would be great.
any help would be great as its starting to get cold out.
