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Subaru Legacy Climate Control Quit

Q. I have a 1991 Subaru Legacy with climate control. About two months ago I replaced the alternator and the air conditioner and heater stopped working. Since it is a climate control system the heater won't work unless the air conditioner is working. I recharged the system but still not working. What could be the problem?

Subaru Legacy Climate Control Quit

A. The Automatic Climate Control (ACC) has a self diagnostic function. Here is the test procedure.

  1. Start engine.
  2. Ground self-diagnosis test lead.
  3. Start self-diagnosis. To shift from one step to another, use HOT and COLD switches on temperature control button. Each step checks a different function of the system.

When you get the codes, let me know and we can go from there.

Subaru Legacy Climate Control Quit

Subaru Legacy Climate Control Quit

Subaru Legacy Climate Control Quit

Additional Information provided courtesy of AllDATA

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