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No Response From AHLM (Automatic Headlamp Leveling Module): Notes

WARNING: This page is about a different car, the 2009 Jeep Grand Cherokee. However, it is still accessible from the selected car via links, so may be relevant.
Fig 1: High Intensity Discharge Lamp CAN B BUS, Fused Run Relay Output & Ground Circuit Schematic
GC0120614Courtesy of CHRYSLER LLC

For complete wiring diagrams, refer to SYSTEM WIRING DIAGRAMS .

Possible Causes 
(F921) FUSED RUN RELAY OUTPUT CIRCUIT OPEN OR SHORTED
(Z904) (Z919) GROUND CIRCUITS OPEN
(D55) AND (D54) CAN B BUS CIRCUITS OPEN
AUTOMATIC HEADLAMP LEVELING MODULE