Caravan AC Self Test Code

I just ran the HVAC self test on my '97 caravan. It takes its time going
through - then winds up with the rear wiper button doing a slow blink. I
was under the impression that no lights would be on if all was OK. Would
anyone know what this code means ?

Thanks
Mark

 

Not so simple. First which wiper LED is flashing? Wipe or Intermittent?
Fail/fault codes have 3 levels on heat only systems, 4 levels on an AC
equipped system and 5 levels on dual zone AC systems. The rear wipe LED
flashing slowly is actually flashing 'one' on each rotation cycle (kind of
like the old MIL or SES or check engine light giving codes), indicating it
is displaying failure codes for level 1, with the code value flashing on the
rear intermittent wipe LED.

Pressing the Wipe switch will cycle the fail/fault level through the levels.
Levels 2-5 are actually for manual test fail indications for the selector
potentiometers and Fin temperature and require further action on your part
to complete. BUT....

Assuming you were looking at the wipe LED flashing a level of 1, and the
intermittent LED is not flashing, meaning level 1, code 0, this is good. The
meaning is All Tests Pass.

 

Thanks Mike !

The wipe led was doing a slow flash. It has rear AC. I wound up pressing
it and it stopped. I just finished replacing the blower motor resistor - so
I wanted to run the full test. I could not remember if the flshing wipe led
was a good or bad thing. It sounds like if I ever really run into a code, I
would need the shop manual.

thanks again,

Mark

 

How does one run the HVAC self test? I have seen this in the past on this ng
but I have never paid attention. If someone could reply with the details I
would appreciate it. Thanks!