Conditions for Setting the DTC (W/O F55)
WARNING: This page is about a different car, the 2009 Cadillac DTS. However, it is still accessible from the selected car via links, so may be relevant.
- The compressor relay coil control circuit is shorted to voltage, ground, or open for 5 seconds.
- The compressor relay coil B+ circuit is shorted to ground, or open for 5 seconds.