A/C relay: Diagnostics

WARNING: This page is about a different car, the 2001 Saab 9-3. However, it is still accessible from the selected car via links, so may be relevant.

If there is an open circuit or short circuit to ground, diagnostic trouble code P1656 will be generated.
If there is a short circuit to B+, diagnostic trouble code P1657 will be generated.

NOTE: The A/C request from DICE can be read with the diagnostic tool.