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Home >> Jeep >> 2012 >> Grand Cherokee Laredo, AWD >> Repair and Diagnosis >> Body & Frame >> Windows >> (Driver Door Module (DDM) (DMFL) - Electrical Diagnostics) >> DTC Troubleshooting >> U0164-00-Lost Communication With HVAC Control Module >> When Monitored:

When Monitored:

Continuously when the ignition is on.

Battery voltage between 10 and 16 volts.

Ignition Off Draw (IOD) fuse installed.