How to run the heater and air conditioner diagnostics

The following is gleaned from the T&C '97 Factory Shop Manual.
It should apply to all '96-UP minivans:

With engine on, set blower motor to high, set mode position knob to panel
(i.e. full left), open all A/C outlets, set temperature to cold (both levers
if so equipped).

Now press the wash and rear wiper buttons on the A/C panel simultaneously
for 5 seconds (until all LED's light).  This should get the test started.
Assorted lights on this panel will flash as different tests are run.
Eventually if the tests are passed the rear wiper LED should be the only
light flashing.  Push the rear wiper button to exit test mode and you should
be home free.
 



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