XB80 - Continuous Code 586: Clear and Try to Regenerate Code

Continuous Memory Diagnostic Trouble Code (DTC) 586 indicates an open or short to power in the power-to-A/C clutch circuit. This could be due to a hard fault or an intermittent condition.

Possible causes:

- Open or short to power in the power-to-A/C clutch circuit (harness).

- Open A/C clutch ground circuit (to Variable Control Relay Module (VCRM) Pin 13).

- Open VCRM A/C ground (VCRM Pin is to weld nut on LH side radiator support).

- Open circuit in A/C clutch.

- Damaged VCRM.

- Clear continuous memory. Clearing Diagnostic Trouble Codes

- A/C "OFF", defroster "OFF" (testing for DTC 586 is done only with the A/C "OFF").

- Start engine, wait 15 seconds.

- Engine "OFF".

- Rerun Key On Engine Off (KOEO) Self-Test. Quick Test Appendix (Detailed Testing Instructions)

- Is Continuous Memory DTC 586 present?

Yes -- DTC 586 is a hard fault. Go to XB81. XB81 - Check Power to A/C Clutch Circuit For Short to Power

No -- DTC 586 is intermittent. Go to XB85. XB85 - Check A/C Circuits For Intermittent Opens

Service as necessary.