No Response From HVAC (A/C Heater Control Module): Notes

WARNING: This page is about a different car, the 2009 Jeep Liberty. However, it is still accessible from the selected car via links, so may be relevant.

Fig 1: HVAC (A/C HEATER CONTROL MODULE) CIRCUIT SCHEMATIC

Courtesy of CHRYSLER LLC

For complete wiring diagrams refer to SYSTEM WIRING DIAGRAMS .

Possible Causes
(F921) FUSED RUN/START RELAY OUTPUT CIRCUIT OPEN OR SHORTED
(Z910) GROUND CIRCUIT OPEN
(D264) AND (D265) CAN INTERIOR BUS (125K) CIRCUITS OPEN
A/C HEATER CONTROL MODULE